Download do WWDC - download do código fonte WWDC

Notas da sessão WWDC 2020

Obrigado ?

Notas da sessão do WWDC nos últimos anos foram tão bem -sucedidos que decidi continuar essa forma de resumo da sessão do WWDC. Gostaria de levar o momento para agradecer a todos por contribuição, feedback, apoio e leitura das minhas notas de sessão

Introdução

Normalmente, é muito mais rápido ler alguns pontos de bala em vez de assistir a um vídeo de 50 minutos de sessão. Então, se você achar algo interessante, ainda poderá assistir.

As sessões excepcionalmente mencionáveis são destacadas usando um ★.

Isso é trabalho em andamento, pois é muito esforço assistir a todos os vídeos sozinhos. Portanto, seja paciente ou apenas abra um problema para fazer uma sugestão de quais anotações você gosta de ver a seguir :)

Contribuição

Sinta -se à vontade para enviar um PR se eu tiver algo errado ou você tiver uma sugestão de melhoria. Por favor, dê uma olhada em contribuir.md se você deseja contribuir.

Muito obrigado a todos que contribuíram e melhoraram a qualidade geral das notas e aqueles que adicionaram notas completas à lista.

Menções

Este repositório já foi mencionado muitas vezes no Twitter e, além disso, também nos seguintes locais:

IOS Dev Weekly Edição 409
IOS Goodies Edição 287
Desenvolvimentos Swift Edição 189
WWDCNotes

Links interessantes relacionados à WWDC

Documentação do desenvolvedor da Apple por @apple
Notas de liberação do Xcode
Notas de lançamento do iOS e iPados

Índice

(TO-Do) Expandindo a automação com a App Store Connect API
(TO-Do) O que há de novo na avaliação
Apresentando chaves do carro
(TO-Do) otimize o pipeline de imagem principal para o seu aplicativo de vídeo
(TO-Do) Editar e reproduza o vídeo HDR com avfoundation
(TO-Do) Exportar mídia hdr em seu aplicativo com avfoundation
(TO-Do) Conteúdo MPEG-4 fragmentado pelo autor com AvassetWriter
(TO-Do) Descubra o rastreamento de raios com metal
(TO-Do) Conheça os ponteiros da função de metal
(TO-Do) Dados principais: Gols e máximos
(TO-Do) Acessibilidade do aplicativo para controle de interruptor
(TO-Do) Torne seu aplicativo visualmente acessível
(To-Do) Construa kernels de imagem central à base de metal com Xcode
(TO-Do) Crie uma experiência de fala perfeita em seus aplicativos
Listas no UicollectionView
Configuração de células modernas
Conheça o widgetkit
(TO-Do) Pilhas, grades e contornos em SwiftUi
(TO-Do) Construa vistas Swifttui para widgets
(TO-Do) Widgets Code-Along, Parte 1: a aventura começa
(TO-Do) Widgets Code-Along, Parte 2: Linhas de tempo alternativas
(TO-Do) Widgets Code-Along, Parte 3: Linhas de tempo avançando
(TO-Do) App Essentials em Swiftui
(TO-Do) Crie aplicativos baseados em documentos em Swiftui
Data Essentials em Swiftui
O que há de novo em Swiftui
(TO-Do) Crie aplicativos Swifttu para TVOS
(TO-Do) Crie um classificador de ação com Criar ML
(TO-Do) Avanços em fontes de dados difíceis
(TO-Do) Crie complicações para o Apple Watch
(TO-Do) Ativar DNS criptografado
(TO-Do) Construa complicações em Swiftui
(TO-Do) Mantenha suas complicações atualizadas
Construa com os catadores, menus e ações do iOS
(TO-Do) otimize a interface do seu aplicativo Mac Catalyst
(TO-Do) Identifique tendências com a API de poder e desempenho
(TO-Do) Projetar interações de mídia Siri de alta qualidade
(TO-Do) Expanda sua mídia Sirikit intenção de mais plataformas
(TO-Do) Execução de fundo desmistificada
(TO-Do) O que há de novo em Sirikit e atalhos
(TO-Do) Avalie e otimize a interação de voz para o seu aplicativo
(TO-Do) capacitar suas intenções
(Fazer) decifrar e lidar com erros comuns de Siri
(TO-Do) Diagnosticar problemas de desempenho com o organizador Xcode
Elimine os engates de animação com XCTest
Por que meu aplicativo está sendo morto?
(TO-Do) O que há de novo no MetroClinit
(TO-Do) Integre seu aplicativo com o Will Down
(TO-Do) apresenta suas ações no aplicativo de atalhos
Design for Intelligence: Apps, evoluído
(TO-Do) Design for Intelligence: Faça amizade com "o sistema"
Design for Intelligence: Descubra novas oportunidades
(TO-Do) Descubra técnicas de depuração da imagem central
(TO-Do) decodificar Proores com Avfoundation e VideotoolBox
(TO-Do) Escreva testes para falhar
(TO-Do) construir para o ponteiro do iPados
(TO-Do) lidar com o trackpad e entrada do mouse
(TO-Do) o Push Notifications Primer
(TO-Do) Explore pacotes e projetos com playgrounds Xcode
Avanços no UicollectionView
O que há de novo em links universais
(TO-Do) Explore o aplicativo Ação e Visão
Chave ★
(Atualmente) encontre o compartilhamento de rosto de vigia
(TO-Do) Projete ótimos widgets
(TO-Do) Adote a nova aparência de macOS
(TO-Do) Build for iPad
(TO-Do) Conheça Rabrible para iPad
(TO-Do) O que há de novo no Pencilkit
(TO-Do) Suporte os teclados de hardware em seu aplicativo
(TO-Do) Apoie a privacidade da rede local em seu aplicativo
(TO-Do) Aumente o desempenho e a segurança com as redes modernas
(TO-Do) Crie conectividade push local para redes restritas
(TO-Do) Aplicativos para iPad e iPhone no Apple Silicon Macs
(TO-Do) preenchendo em todos os lugares
(TO-Do) eficiência de narração com rotores personalizados
(To-Do) Design de acessibilidade para Mac Catalyst
(TO-Do) Crie clipes de aplicativos para outros negócios
(TO-Do) Introdução ao SwiftUi
Atualizar seu clipe de aplicativo
(Atualmente) Descubra Applseed para TI e atualizações de software gerenciadas
(TO-Do) Aproveitar a identidade e autenticação corporativa
(To-Do) Construa aplicativos corporativos com reconhecimento de localização
(TO-Do) Construir suítes de aplicativos corporativos escaláveis
(TO-Do) O que há de novo no Mac Catalyst
(Tarefa) design para o centro de jogo
Configure e vincule seus clipes de aplicativos
Distribua estruturas binárias como pacotes rápidos
(TO-Do) Inspecione, modifique e construa desenhos de pencilkit
(TO-Do) estrutura seu aplicativo para visualizações SwiftUi
(TO-Do) O que há de novo no Carekit
(TO-Do) Use a implantação e a segurança do modelo com ML principal
(TO-Do) Obtenha modelos no dispositivo usando conversores ML do núcleo
(TO-Do) Controle o treinamento em Criar ML com Swift
(TO-Do) entrega uma melhor experiência em áudio HLS
(TO-Do) Crie um aplicativo de segurança de endpoint
(TO-Do) Formatters: Torne os dados para o ser humano
Projeto para privacidade de localização
(To-Do) Avanços no Final
Xctskip seus testes
Abrace a inferência do tipo Swift
(TO-Do) gerenciar com segurança ponteiros em Swift
(TO-Do) Explore o log no Swift
(TO-Do) Pacotes Swift: Recursos e Localização
O que há de novo em Swift
(TO-Do) O que há de novo no design do watchOS
(TO-Do) Projete ótimos clipes de aplicativos
(TO-Do) Aproveite ao máximo a entrada com a Apple
Explore os clipes de aplicativos
(TO-Do) Os detalhes da tipografia da interface do usuário
(TO-Do) Mestre foto em imagem no TvOS
O que há de novo no Healthkit
(TO-Do) Sincronizar dados de saúde com o HealthKit
(TO-Do) Editar visualmente as visualizações SwiftUi
(TO-Do) Descubra aprimoramentos do WKWebView
(TO-Do) Proteite seu aplicativo: Modelagem de Ameaças e Anti-Padrões
(TO-Do) Crie interações rápidas com atalhos no WatchOS
(TO-Do) Adicione configuração e inteligência aos seus widgets
(TO-Do) amplie seu alcance com sugestões de eventos Siri
Estado da União da plataforma ★
(TO-Do) Design for Intelligence: Conheça pessoas onde elas estão
(TO-Do) Crie ótimos aplicativos corporativos: um bate-papo com Aaron Levie de Box
(TO-Do) Design com os catadores, menus e ações do iOS
(To-Do) Design para iPad
(TO-Do) Símbolos SF 2
(TO-Do) O que há de novo no NFC Core
(TO-Do) Modernizar PCI e SCSI Drivers com Driverkit
(TO-Do) Porta seu aplicativo Mac para Apple Silicon
(TO-Do) O que há de novo no ResearchKit
(TO-Do) Explore a computação numérica em Swift
(TO-Do) Crie layouts amigáveis à localização usando o Xcode
(TO-Do) lidar com interrupções e alertas nos testes de interface do usuário
Obtenha os resultados dos seus testes mais rapidamente
(TO-Do) Crie aplicativos personalizados para funcionários
(TO-Do) implante dispositivos Apple usando zero toque
(TO-Do) Conheça grupos de trabalho de áudio
(TO-Do) melhorar a criação de fluxos com ferramentas HLS
(TO-Do) gravar áudio estéreo com avaudiossession
O que há de novo em HLS de baixa latência
(TO-Do) Descubra HLS bloqueando dicas de pré-carga
(TO-Do) Otimize transmissões ao vivo com atualizações do Delta da Lista de Reprodução HLS
(TO-Do) Reduza a latência com o HLS bloqueando a recarga da lista de reprodução
(TO-Do) Adaptar a inserção do anúncio ao HLS de baixa latência
(TO-Do) O kit de ferramentas do artista
(TO-Do) Aproveite as GPUs da Apple com metal
(TO-Do) Otimize aplicativos de metal e jogos com contadores de GPU
(TO-Do) Compre on-line com uma aparência rápida de AR
(TO-Do) Ganhe insights sobre o seu aplicativo de metal com Xcode 12
Explore o Arkit 4
(TO-Do) O que há de novo no realidade
(TO-Do) O que há de novo em USD
(TO-Do) Avanços em controladores de jogo
(TO-Do) Construa binários de GPU com metal
(TO-Do) Erros do lado da GPU de depuração em metal
(TO-Do) Traga jogos de teclado e mouse para iPad
(TO-Do) Toque no Centro de Jogo: Painel, Ponto de Acesso e Perfil
(To-Do) Toque no Centro de Jogos: Tabas de Justiça, Conquistas e Multiplayer
(TO-Do) Suporta aplicativos e jogos com desempenho intensivo
(TO-Do) Traga seu aplicativo de metal para Apple Silicon Macs
(TO-Do) Otimize o desempenho do metal para Apple Silicon Macs
(TO-Do) Capture e transmita aplicativos no Mac com replaykit
(TO-Do) Descubra sugestões de pesquisa para a Apple TV
Acelere seu aplicativo com o CarPlay
(TO-Do) O que há de novo no streaming de áudio para a Apple Watch
(TO-Do) O que há de novo no gerenciamento de dispositivos Apple
(TO-Do) Design para o ponteiro do iPados
(TO-Do) Lidar com a biblioteca de fotos limitadas em seu aplicativo
(TO-Do) Crie modelos de transferência de imagem e estilo de vídeo em Create ML
(To-Do) Construa uma vista Swifttui em playgrounds Swift
(TO-Do) Use Swift na AWS Lambda com Xcode
(TO-Do) Apoie vários usuários em seu aplicativo TVOS
(TO-Do) O que há de novo no inspetor da web
(TO-Do) Torne-se um especialista em simulador
(TO-Do) Swift inseguro
(TO-Do) Adicione visualizações e modificadores personalizados à Biblioteca Xcode
(TO-Do) Sincronizar um armazenamento de dados do núcleo com o banco de dados público CloudKit
O que há de novo na App Store Connect
Conheça o novo seletor de fotos
(TO-Do) Detecte o corpo e a mão pose com a visão
(TO-Do) Crie conteúdo de playgrounds Swift para iPad e Mac
(TO-Do) Descubra como baixar e reproduzir HLS offline
(TO-Do) além das etapas de contagem
(TO-Do) Torne os aplicativos mais inteligentes com linguagem natural
(TO-Do) O que há de novo na educação
(TO-Do) Introdução de testes do StoreKit no Xcode
(TO-Do) O que há de novo no local
(TO-Do) O que há de novo com a compra no aplicativo
O que há de novo na carteira e maçã
(TO-Do) O que há de novo para desenvolvedores da Web
(TO-Do) Introdução ao HealthKit
(TO-Do) Conheça extensões da Web Safari
(TO-Do) Atualizações de segurança de contas de um TAP
(TO-Do) Distribuição de aplicativos personalizada com o Apple Business Manager
(TO-Do) Conheça a interação próxima
(Fazer) manusear o fhir sem se queimar
(TO-Do) Conheça o Face ID e Touch ID para a Web
(TO-Do) Arquitetações para assinaturas
(TO-Do) O que há de novo no Classkit
(TO-Do) Explore APIs de visão computacional
(TO-Do) construir confiança através de uma melhor privacidade
(TO-Do) Crie modelos ML personalizados com o gráfico de shaders de desempenho de metal
(TO-Do) refinar as estruturas Objective-C para Swift
(TO-Do) Explore a nova arquitetura do sistema do Apple Silicon Macs
(TO-Do) Falhas no teste de triagem com xctissue

Expandindo a automação com a App Store Connect API

https://developer.apple.com/wwdc20/10004

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

O que há de novo na avaliação

https://developer.apple.com/wwdc20/10005

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Apresentando chaves do carro

https://developer.apple.com/wwdc20/10006

Apresentador: Matthias Lerch

As pessoas podem desbloquear, trancar e iniciar o carro (iPhone ou Apple Watch)
Armazenado com segurança no dispositivo e pode ser excluído via iCloud
As chaves podem ser compartilhadas com a família ou amigos
AGNOSTIC à tecnologia de rádio ( suporta a NFC até agora )
Offline capaz
O carro precisa apoiar:
- Emparelhamento do proprietário (associação se iPhone e carro)
  - Provar a propriedade do carro
  - Iniciar emparelhamento
  - Coloque o iPhone perto do leitor NFC do carro
  - A chave do carro aparece na carteira
- Transações (desbloquear, bloquear, iniciar o carro)
  - Leitores da NFC na maçaneta da porta e no painel (início do motor)
  - Otimizado para segurança e desempenho
  - O modo expresso permite que o recurso funcione sem identificação de face ou code (ativado por padrão)
  - iPhone e carro podem estar offline
  - A Apple não sabe quando você usa seu carro
- Interfaces de servidor (compartilhamento de chaves, gerenciamento de chaves)
  - Compartilhe chaves sobre mensagens
  - O carro pode estar offline ao compartilhar
  - A Apple não sabe com quem você compartilha sua chave de carro
  - Níveis de acesso opcionais (por exemplo, 'desbloquear e acionar', 'Acesso e direcionar até 65 mph')
  - Cabe a cada criadora de automóveis definir níveis de acesso
Gerenciamento -chave
- Gerencie o proprietário e as chaves compartilhadas do iPhone ou carro
- As chaves removidas de um dispositivo param de funcionar imediatamente (mesmo que o dispositivo esteja offline)
- Dispositivo de proprietário fácil de alterar (por exemplo, ao comprar um novo iPhone)
Arquitetura do sistema
- Totalmente integrado ao iOS nativamente
- Chaves criadas e armazenadas em elementos seguros e nunca exportados
- Todos os recursos usam AES e criptografia de curva elíptica
- Design offline baseado em PKI
- MANTAGEM TSM (Gerenciador de Serviço Confiável) Não é necessário para a Integração do Servidor simples
- O que é uma chave de carro digital?
  - Binded para o dispositivo do usuário e não para a Apple ou os fabricantes de automóveis
  - Chave privada (SK) nunca sai do SE (elemento seguro)
  - A chave pública é exportada em um certificado X.509 para verificação
  - Applet
    - Implementa a chave do carro no elemento seguro
    - Pares do par de teclas, chave pública do carro, caixas de correio seguras
    - Todas as chaves do carro hospedadas em uma única instância de applet
  - Fluxo de emparelhamento do proprietário (online)
    1. VERIFICADOR DE PAKE
    2. Emparelhar senha
    3. Emparelhamento
    4. Link criptográfico
    5. Ativação/registro -chave
    6. Atestado -chave
  - Fluxo de compartilhamento de chaves
    1. O proprietário envia convite usando mensagens
    2. Nova chave criada em
    3. Cadeia de certificado de identidade
    4. Verificação do proprietário
    5. Atestado retornou
    6. Registro offline
  - Ciclo de vida de uma chave de carro
    - Criado durante o emparelhamento do proprietário ou compartilhamento de chaves
    - Transações
    - Suspensões
    - Revogação
    - Eliminação
  - Certificados e transação
    - Compartilhamento de proprietários, compartilhamento de chaves, transações rápidas e padrão
    - Dê uma olhada mais profunda nos fluxos e esquemas apresentados às 11:30
Tecnologias de rádio
- NFC
  - Baseado no leitor NFC padrão
  - Protocolo sem contato aprimorado (ECP)
  - Ativa uma experiência NFC totalmente automática
  - Identificadores disponíveis antes do início da transação (tipo de leitor, montadora)
  - Pesquisa eficiente do leitor
- Ultra Wide Band
  - iPhone com chip U1
  - Use com iPhone em bolsa ou bolso
  - Arquitetura de gerenciamento de chaves comuns
  - A especificação está atualmente em desenvolvimento
Integração do servidor
- Necessário para o gerenciamento de chaves remotas
- O Servidor de Maker de Automóvel precisa estabelecer a conexão com o back -end da Apple (para cada ambiente, por exemplo, testes e produção)
- Certificados de troca
- Implementar e testar interfaces do servidor (registrar uma nova chave, revogar as chaves, enviar notificações)
- Fornecer obras de arte
- Conecte -se ao aplicativo de montadora
Aplicativos de montadora
- Forneça recursos personalizados usando chaves armazenadas na carteira
- Iniciar o emparelhamento do proprietário
- Disponível para montadoras
- É necessário o direito
- Use o Passkit APIs
Como começar (para criadores de automóveis)
- Consórcio de conectividade do carro
- Especificação de chave digital 2.0
- Especificação de chave digital 3.0 (em desenvolvimento, suportará Ultra Wideband)
- carconnectivity.org
- Entrada para o programa Apple MFI

Otimize o pipeline de imagem principal para o seu aplicativo de vídeo

https://developer.apple.com/wwdc20/10008

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Editar e reproduzir o vídeo HDR com avfoundation

https://developer.apple.com/wwdc20/10009

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Exportar mídia hdr em seu aplicativo com avfoundation

https://developer.apple.com/wwdc20/10010

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Conteúdo MPEG-4 fragmentado pelo autor com AvassetWriter

https://developer.apple.com/wwdc20/10011

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Descubra o rastreamento de raios com metal

https://developer.apple.com/wwdc20/10012

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Conheça ponteiros de função de metal

https://developer.apple.com/wwdc20/10013

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Dados principais: Garesses e máximos

https://developer.apple.com/wwdc20/10017

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Acessibilidade do aplicativo para controle de comutação

https://developer.apple.com/wwdc20/10019

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Torne seu aplicativo visualmente acessível

https://developer.apple.com/wwdc20/10020

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Construa kernels de imagem central à base de metal com Xcode

https://developer.apple.com/wwdc20/10021

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Crie uma experiência de fala perfeita em seus aplicativos

https://developer.apple.com/wwdc20/10022

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Listas no UicollectionView

https://developer.apple.com/wwdc20/10026

Apresentadores: Michael Ochs

Listas no iOS 14 Visualizações de coleção apresentam aparências de UITableView no UICollectionView
Suporte de auto-imagem aprimorado: agora padrão ao usar listas no UICollectionView
- Construa células com Autolayout e deixe a coleta de visualizar assumir o controle
- Substituir preferredLayoutAttributesFittingAttributes: nas subclasses de células para exercitar o dimensionamento manual
UicollectionLayoutListConfiguration
- O único novo tipo necessário no lado do layout para criar listas na visualização da coleção
- Construído em cima do NSCollectionLayoutSection E UICollectionViewCompositionalLayout
- Adiciona dois estilos exclusivos da lista: .sidebar e .sidebarPlain para criar aplicativos multicolumn no iPados 14
- Opções para mostrar/ocultar separadores e configurar cabeçalhos/rodapés da lista
Criando listas
- Maneira fácil
  1. Crie um UICollectionLayoutListConfiguration
  2. Crie um UICollectionViewCompositionalLayout com a configuração
- Configuração por seção
  1. Crie um UICollectionLayoutListConfiguration
  2. Crie uma NSCollectionLayoutSection com a configuração
  3. Coloque o código acima dentro do inicializador do provedor de seção existente no layout de composição
  4. Personalize o layout por seção
Configurando os cabeçalhos da seção da lista
- Os cabeçalhos/rodapés da lista precisam ser explicitamente habilitados
  - Registrar cabeçalhos/rodapés como vistas suplementares
    - Defina o modo de configuração do cabeçalho/rodapé como 'suplementar'
    - Forneça uma visão suplementar ao renderizar o cabeçalho/rodapé na tela
  - Defina headerMode como firstItemInSection (somente cabeçalhos)
    - Configure a primeira célula de exibição da coleção para parecer um cabeçalho
    - Recomendado para estruturas hierárquicas de dados e APIs de instantâneos: confira os avanços na fonte de dados difcitiva
    - A fonte de dados precisa estar ciente da primeira célula ser cabeçalho
UicollectionViewListCell
- Subclasse do UICollectionViewCell , pode ser usado de forma intercambiável
- Melhor suporte para configurar inserções separador e recuo do conteúdo celular
- Apresenta ações de deslizamento
- API de melhores acessórios
- Acesso concedido ao conteúdo do sistema padrão/configurações de fundo: Confira a configuração de células modernas
Guia de layout do separador
- Os separadores devem se alinhar com o conteúdo de células primárias
- Restringir este guia de layout ao conteúdo: oposto dos guias de layout do Uikit
  1. Configure o layout da célula
  2. Restringir a âncora líder do guia de layout do separador à âncora principal do conteúdo principal de Cell
- Manipulado automaticamente ao usar configurações de conteúdo fornecidas pelo sistema
Ações de deslizar
- Somente suportado se a célula for renderizada nas seções configuradas usando uma configuração de lista
- Substituir o getter de configuração da ação líder/trilhado para configurar
- CUIDADO : Nunca capture o caminho do índice (instável) da célula que está sendo configurada no manipulador de ação
  - Capturar diretamente o modelo de dados
  - Capture um identificador estável da célula:
    - Fonte de dados difcitiva e seu identificador de item estável
    - O novo tipo de registro de células no iOS 14: uicollectionViewListCell
API de acessórios de células de lista
- Opções para configurar o lado principal e a trilha da célula
- Configure vários acessórios do mesmo lado
- Funcionalidades na lista acessórios de células
  - Acessório de reordenação: a célula está automaticamente no modo de re-rodificação quando tocada
  - Excluir acessório: a célula revela automaticamente as ações de furto configurado quando tocado
  - Acessório de divulgação de esboço
    - A célula se comunica automaticamente com a fonte de dados e expandiu/recolhem seus filhos quando tocados
    - Requer as novas APIs de instantâneos da seção: Confira os avanços na fonte de dados difícil
Muitos padrões de sistema são fornecidos enquanto as personalizações são mantidas

Configuração de células modernas

https://developer.apple.com/wwdc20/10027

Apresentador: Tylor Fox

Introdução com configurações
- No iOS 13, usamos as propriedades IMAGEVIEW EXTLABEL IMPORTA E TEXTLABEL no UITableViewCell para exibir uma imagem e algum texto.
- No iOS 14, usamos a configuração de conteúdo para descrever a aparência da célula para um estado específico
- É assim que você configura uma célula usando uma configuração de conteúdo:
  - var content = cell.defaultContentConfiguration() Isso sempre retorna uma nova configuração sem qualquer conteúdo definido nele. Não precisa pensar no estado antigo.
  - Defina a imagem e o texto na configuração de conteúdo.
  - cell.contentConfiguration = content Assim que chamamos isso, a célula é atualizada para exibir a imagem e o texto que especificamos.
- O mesmo código para configurar qualquer célula e qualquer visualização que suporta configurações de conteúdo.
- Composível, leve, muito barato de criar e construir para desempenho
Tipos de configuração
- Configuração de segundo plano
  - Deixe você definir coisas como cor de fundo, efeito visual, derrame, inserções, raio de canto e visualização personalizada
- Liste a configuração de conteúdo
  - Deixe você definir coisas como imagem, texto, texto secundário, métricas de layout e comportamentos
Estado de configuração
- O estado de configuração representa as várias entradas que você usa para configurar suas células e visualizações.
- Cada célula, cabeçalho e rodapé tem seu próprio estado de configuração.
- Dois tipos
  - Veja o estado da configuração
    - Coleção de características
    - 4 estados: destacados, selecionados, deficientes e focados
    - Estado personalizado: este é o armazenamento de valor-chave para adicionar estados ou dados extras que usam para configurar sua visualização.
  - Estado de configuração de células
    - Tudo do estado de configuração de visualização
    - Editando, roubou, expandiu
    - Arraste e soltar estados
- Quando automaticallyUpdatesContentConfiguration é verdadeiro, a célula chama automaticamente updated(for:) em sua concordância de conteúdo quando a célula ConfigurationState muda e aplica a configuração atualizada de volta à célula. O valor padrão é verdadeiro.
- Quando automaticallyUpdatesBackgroundConfiguration é verdadeiro, a célula chama automaticamente updated(for:) em sua configuração de fundo quando a célula ConfigurationState muda e aplica a configuração atualizada de volta à célula. O valor padrão é verdadeiro.
- Você pode substituir updateConfiguration(using:) Para atualizar e personalizar manualmente a configuração de conteúdo, desative atualizações automáticas definindo essa propriedade como false. Esse método é chamado antes da exibição da sua célula e será chamado sempre que o estado de configuração foi alterado.

Conheça o widgetkit

https://developer.apple.com/wwdc20/10028

Apresentadores: Nahir Khan, Neil Desai

Os widgets agora são usados em todas as plataformas
Grandes widgets são visíveis, relevantes e personalizados
Pilhas inteligentes são coleções de widgets e mostram automaticamente o certo no topo, usando inteligência no dispositivo
Os widgets suportam a configuração tocando neles - isso é realizado usando intenções semelhantes a sirikit
por exemplo, escolhendo a cidade em um aplicativo meteorológico
Ui construído inteiramente em Swiftui
Como funciona o widgetkit
- Extensões WidgetKit são extensões de fundo
- Eles retornam uma série de hierarquias de visão em uma linha do tempo
- A linha do tempo é enviada para a tela inicial que apresenta a visão certa no momento certo
- Como as visualizações estão "prontas", elas podem ser reutilizadas em diferentes pontos do sistema, por exemplo, a galeria de widgets
- A linha do tempo é atualizada no aplicativo principal e as atualizações são agendadas por extensão
  - Imagine a linha do tempo do calendário para o dia. Um evento é atualizado do calendário, que acorda a extensão e fornece a nova linha do tempo.
Construindo um widget
- A extensão de widget única suporta vários tipos de widgets em diferentes plataformas
- Configurações possíveis: Static (widget de treino) ou Intent-Based (widget de lembrete que pode ser personalizado)
- Famílias apoiadas: um widget pode permitir uma ou muitas das seguintes famílias: systemSmall , systemMedium , systemLarge
- Widget Struct deve estar em conformidade com Widget e seu corpo para WidgetConfiguration
- Como construir uma experiência infantil
  - Widgets não são mini aplicativos que preferem projetam conteúdo na tela inicial
  - Sem rolagem
  - Sem vídeos ou imagens animadas
  - Toque em interações para link profundo no aplicativo principal. Widget associável com um link de URL usando a API Widgeturl (use a nova API Link de Swiftui)
  - Novos tipos de visão importantes:
    - Placeholder
      - Não deve conter dados do usuário
      - Ótimo espaço de espaço reservado mostra uma representação de que tipo seus dados são
    - Snapshot
      - Representar uma única entrada no tempo
      - Deve devolver uma visão o mais rápido possível
      - Usado para exibir seu widget na galeria
      - Use -o como a primeira entrada na sua linha do tempo para que os usuários obtenham o que vêem na galeria
    - Time line
      - Combinação de visualizações e datas
      - Saída se a extensão do widgetKit for serializada para o disco, que permitiu a renderização de entradas individuais bem a tempo
  - Recarregam
    - Acorde a extensão e peça uma nova linha do tempo
    - Ajude a garantir que o conteúdo esteja atualizado
- Obtenha um TimelineProvider pelo struct Provider: TimelineProvider
  - Implementar func snapshot(...) e func timeline(...) para devolver os respectivos dados
  - Forneça uma política de recarga no momento da ciosidade da linha para saber quando a linha do tempo deve ser recarregada: atEnd , after(date: Date) , never
- O sistema determina o melhor momento para recarregar o widget, por exemplo, com base em:
  - Notificação de fundo
  - Mudança de tempo significativa
  - Alterações no aplicativo feito pelo usuário, por exemplo, nova entrada do calendário
- Use WidgetCenter.[reloadTimelines(ofKind:), reloadAllTimelined] Para recarregar programaticamente as linhas do tempo
- Obtenha configurações atuais com WidgetCenter.getCurrentConfigurations(completion:)
  - Use solicitações em lote
  - Não use demais o uso de redes de um widget
- Use o Modificador onBackgroundURLSessionEvents para lançar uma tarefa de rede que entrega o resultado à sua extensão
  - Recarretes estão orçados pelo sistema, não os use demais
- Personalização
  - Use a estrutura Intents , conhecida da Siri, para personalizar o comportamento dos widgets
  - Use o novo manuseio de intenção no aplicativo para atender solicitações do seu widget
  - IntentConfiguration é usado para alimentação de configurações de widgets baseadas em intenções
  - IntentTimelineProvider é usado para gerar linhas de tempo específicas
- Inteligência
  - Os widgets são exibidos na tela inicial por inteligência no dispositivo
  - Seu aplicativo pode doar atalhos
  - A extensão do widget pode anotar entradas da linha do tempo usando TimelineEntryRelevance com suas propriedades de pontuação e duração

Pilhas, grades e contornos em swiftui

https://developer.apple.com/wwdc20/10031

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Construa vistas Swiftui para widgets

https://developer.apple.com/wwdc20/10033

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Widgets Code-junto, Parte 1: a aventura começa

https://developer.apple.com/wwdc20/10034

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Widgets Código-Junto, Parte 2: Linhas de tempo alternativas

https://developer.apple.com/wwdc20/10035

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Widgets Código-junto, Parte 3: Linhas de tempo avançando

https://developer.apple.com/wwdc20/10036

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

App Essentials em Swiftui

https://developer.apple.com/wwdc20/10037

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Crie aplicativos baseados em documentos em Swiftui

https://developer.apple.com/wwdc20/10039

Apresentadores: Exemplo cara, outra pessoa

PENDÊNCIA! Você pode contribuir para esta sessão, consulte Contribuindo.md

Data Essentials em Swiftui

https://developer.apple.com/wwdc20/10040

Apresentadores: Curt Clifton, Luca Bernardi, Raj Ramamurthy

Começando
- Sempre faça as seguintes perguntas:
  - Que dados minha visão precisa?
  - Como a visão manipulará esta data?
  - De onde virão os dados?
- Visualizações imutáveis, que apenas exibem dados, contêm apenas propriedades
- Puxe várias propriedades em seu próprio objeto de configuração
  - O objeto de configuração pode conter funções para mutações de seu estado
  - Usando @State private var config: ConfigObject() para render sua visão após config alterada
  - Deixe os pais e sub -visualizações se comunicarem sobre um único objeto de configuração compartilhando -o usando @Binding var config
  - Passe config marcando o TI como referência usando o símbolo do dólar: SubView(config: $config)
Modelagem de dados usando ObservableObject
- Protocolo com restrição de classe (apenas adotável por tipos de referência)
- Pode ser usado para alcançar comportamentos de super personagem, por exemplo, dados de apoio por um serviço ou servidor
- Conforme implementando var objectWillChange: Self.ObjectWillChangePublisher { get }
- Use para gerenciar o ciclo de vida dos dados , manipular efeitos colaterais , integrar-se aos componentes existentes
- Será sua fonte de verdade
- Não precisa ser o seu modelo completo de dados - dividido em vários objetos observáveis se o seu modelo for complexo
- Use um único obsertableObject para todas as suas opiniões se o seu modelo de dados for simples
- Marcar propriedades do seu obsertableObject, sua visão está interessada como @Published var progress: Double
- Como criar uma dependência do ObservableObject?
  - @ObservedObject
    - @ObservedObject var config: Configuration
    - Você precisa gerenciar a propriedade dos objetos fora da sua opinião
    - Crie uma ligação a qualquer propriedade do tipo de valor do obsertableObject para transmiti-lo para por exemplo $config.isFinished um controle Toggle e deixe atualizar automaticamente sua exibição
  - @StateObject
    - Swiftui é dono do ObservableObject
    - A criação/destruição está ligada ao ciclo de vida de View
    - Instanciado logo antes do corpo correr
    - Use -o para implementar por exemplo, um ImageLoader: ObservableObject com um @published var image: Image Property
    - Sempre que @StateObject muda, a visualização é renderizada e, portanto, preenchida com a imagem
  - EnvironmentObject
    - Em Swiftui, você normalmente tem uma hierarquia de muitas vistas modulares
    - Para evitar muita caldeira, passando o Passe para .environmentObject(...)
    - Alterações nisso, de qualquer visão da hierarquia, serão refletidas em qualquer outra visão
Considerações de desempenho Swiftui
- Evite atualizações de visualização lenta
  - Fazer visualizar inicializadores baratos, por exemplo, sem despacho
  - Tornar o corpo uma função pura
  - Evite suposições
- Novas fontes de eventos: onChange , onOpenURL , onContinueUserActivity - Execute no tópico principal
Quem possui os dados?
- Compartilhe dados em um ancestral comum
- Alavancar @StateObject
- Considere colocar dados globais no App e transmiti -los na hierarquia de visualizações. Alterações nele serão renderizadas novamente em todas as cenas (instâncias/janelas) do seu aplicativo
- Novo 2020: os invólucros de propriedades que oferecem persistência de dados em reinicializações de aplicativos e podem ser usados como fonte de verdade
  - @SceneStorage
    - Wrapper por cena para leitura/escrita dados gerenciados por SwiftUi
    - Armazenamento leve para os dados de suas visualizações
    - Use -o para preencher suas visualizações de coleção
  - @AppStorage
    - Armazenamento global escopo de aplicativos, persistiu usando UserDefaults , utilizável em qualquer lugar (aplicativo/visualização)
    - Perfeito para armazenar configurações
    - @AppStorage("amountOfGold") private var amountOfGold = 5000
    - Leia/grava automaticamente de/para o userDefaults sempre que a propriedade mudar

O que há de novo em Swiftui

https://developer.apple.com/wwdc20/10041

Apresentadores: Matt Ricketson, Taylor Kelly

Aplicativos
- Bild todo o seu aplicativo usando swifttu: struct BookClubApp: App
- Os aplicativos podem declarar dependências de dados
- Use WindowGroup para gerenciar a plataforma Windows independente. Suporta várias janelas no macOS e iPados fora do BOS
- Use Settings para obter um painel de preferência gratuitamente • Disponível no macOS
- Use o tipo de cena DocumentGroup para lidar automaticamente em documentos de abertura, salvamento e edição • MacOS, iOS, iPados
- Use o comando CommandMenu para adicionar menus adicionais à barra de menus, incluindo atalhos de teclado
- Novos modelos de várias plataformas especificamente para aplicativos SwiftUi
- Chave LaunchScreen info.plist para configurar sua tela de lançamento • Alternativa simples ao storyboard
Widgets
- iOS, iPados, MacOS construídos exclusivamente usando Swiftui
- Declarado por struct YourWidget: Widget e var body: some WidgetConfiguration
- Use Swiftui para criar complicações personalizadas para vigia
Listas e coleções
- Lista agora recebe contornos para acessar rapidamente o conteúdo da lista • Reduz a necessidade de padrões de navegação push/pop
- Lazy loading grid layouts ( Lazy[V|H]Stack ) to reduce memory footprint and preserve smooth scrolling for large amounts of data
- View Builder for switch statements to show eg different image styles in a list of images
Toolbars and Controls
- .toolbar modifier for unified display of toolbars
- Use ToolbarItem(placement: .principal) to make an item prominent
- Use ToolbarItem(placement: .bottomBar) to place an item in the bottom bar
- When using Label("Title", systemImage: "sf.symbol.name") SwiftUI automatically display icon and/or text depending on where the label is displayed: toolbar, list, ...
- .keyboardShortcut modifier can now be used for additional controls like Button
- New default focus support in tvOS
- New controls:
  - ProgressView("Downloading", value: progress) - horizontal bar
  - ProgressView("Downloading", value: progress).progressViewStyle(CircularViewStyle()) - circular progress indicator
  - ProgressView() - spinner
  - Gauge to indicate the level of value • can contain value labels and min/max value labels
New effects and styling
- New control center UI with beautiful transitions
- .matchedGeometryEffect to provide smooth animations inside of a grid of UI elements
- .clipShape(ContainerRelativeShape()) to automatically apply a super views shape to the subview
- custom fonts automatically scaled with dynamic type changes
- Custom accent color directly form the AssetCatalog on all platforms
- Many controls can now be tinted
System integration
- New Link control to display URLs in link style and open them with the default browser • also supports url schemes to open other apps
- @Environment(.openURL) private var openURL to programmatically open urls via openURL(url) in your views
- onDrag {} and onDrop {} to support drag & drop
- UniformTypeIdentifers framework for eg introspection of file types
- Sign in with Apple as first class component in SwiftUI • available on every platform
- Other Frameworks: AuthenticationServices , AVKit , MapKit , SceneKit , SpriteKit

Build SwiftUI apps for tvOS

https://developer.apple.com/wwdc20/10042

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build an Action Classifier with Create ML

https://developer.apple.com/wwdc20/10043

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Advances in diffable data sources

https://developer.apple.com/wwdc20/10045

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Create complications for Apple Watch

https://developer.apple.com/wwdc20/10046

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Enable encrypted DNS

https://developer.apple.com/wwdc20/10047

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build complications in SwiftUI

https://developer.apple.com/wwdc20/10048

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Keep your complications up to date

https://developer.apple.com/wwdc20/10049

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build with iOS pickers, menus and actions

https://developer.apple.com/wwdc20/10052

Presenters: Eric Dudiac, David Duncan

UISlider and UIProgressView: More consistent across platforms now
UIActivityIndicatorView: New simpler design, Use color API and modern styles, Updates "pull-to-refresh"
UIPickerView: Updated styling
UIPageControl
- New interactions (scrubbing, scrolling)
- Unlimited pages
- Optional custom indicator icons: .preferredIndicatorImage(UIImage()) to set all or .setIndicatorImage(UIImage(), forPage: 0) for a specific image
- Multiple styles: .backgroundStyle = .prominent to highlight the background
UIColorPickerViewController
- New view controller for picking colors
- Eyedropper, Favorites, Hex specification
UIDatePicker
- New compact style to select date and time
- In-line style on iOS - great for iPad or if date picking is primary UI (matches modal presentation)
- Useful when you have space constraints
- Full modal calendar when selecting dates
- Keyboard for selecting times
- New macOS style (10.15.4)
  - Compact, modal calendar presentation
  - Supported in Catalyst apps
Menus
- Provided on UIControl
- Directly supported by UIButton and UIBarButtonItem by button.menu = UIMenu(...)
- Triggered via long-press by default
- Show the menu by a simple tap by setting button.showsMenuAsPrimaryAction = true and don't provide a primary action
- Back buttons implement menus to quickly jump back in navigation stack
- Take action when the menu action is recognized, register for UIControl.Event.menuActionTriggered
- UIDeferredMenuElement to async provide menu items
- UIContextMenuInteraction to modify or replace provided menu updateVisibleMenu(_ block menu: (UIMenu) -> UIMenu)
  - Use UIContextMenuInteraction.rich to display previews and .compact to only show a menu
- New UIBarButtonItem initializers init(systemItem:primaryAction:menu:) , init(title:image:primaryAction:menu:)
- New UIBarButtonItem .fixedSpace() and .flexibleSpace
- UIButton can finally be initialized using an UIAction : init(type:primaryAction:) -> native block based API
- UISegmentedControls can now finally be initialized using UIActions -> native block based API

Optimize the interface of your Mac Catalyst app

https://developer.apple.com/wwdc20/10056

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Identify trends with the Power and Performance API

https://developer.apple.com/wwdc20/10057

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design high quality Siri media interactions

https://developer.apple.com/wwdc20/10060

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Expand your SiriKit Media Intents to more platforms

https://developer.apple.com/wwdc20/10061

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Background execution demystified

https://developer.apple.com/wwdc20/10063

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in SiriKit and Shortcuts

https://developer.apple.com/wwdc20/10068

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Evaluate and optimize voice interaction for your app

https://developer.apple.com/wwdc20/10071

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Empower your intents

https://developer.apple.com/wwdc20/10073

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Decipher and deal with common Siri errors

https://developer.apple.com/wwdc20/10074

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Diagnose performance issues with the Xcode Organizer

https://developer.apple.com/wwdc20/10076

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Eliminate animation hitches with XCTest

https://developer.apple.com/wwdc20/10077

Presenter: Tanuja Mohan

Hitch: A frame appears on screen later than expected
VSYNC: Time the screen swaps the frame onto the display
Hitch time: Time in ms that a frame is late to display
Hitch ratio: Hitch time in ms per second for a given duration
Apple doesn't use frames per second (fps) since:
- 60 or 120 fps is not always the desired target
- Display may intentionally not be updated
- Target frame rate may intentionally be lower than possible
Hitch ratio is always comparable across tests, following ratios are recommended:
- Good: < 5ms/s
- Warning: 5..10ms/s - users will start recognizing hitches
- Critical: >10ms/s
Can be measured using XCTestMetrics and unit tests or for production apps using MetricsKit and Xcode Organizer
XCTOSSignpostMetric gives you the following when using an animation os_signpost interval:
- Duração
- Total count of hitches
- Total duration of hitches
- Hitch time ratio
- Frame rate
- Frame count
Specify an animation os_signpost interval by:
- os_signpost(.animationBegin, log: logHandle, name: "performanceAnimationInterval")
- os_signpost(.end, log: logHandle, name: "performanceAnimationInterval")
UIKit has pre-defined metrics:
- XCTOSSignpostMetric.navigationTransitionMetric
- XCTOSSignpostMetric.customNavigationTransitionMetric
- XCTOSSignpostMetric.scrollDecelerationMetric
- XCTOSSignpostMetric.scrollDraggingMetric
Application state can be reset to avoid tests influencing themselves: XCTMeasureOptions().invocationOptions = [.manualStop]
Listen to a live testing session at 8:15

Why is my app getting killed?

https://developer.apple.com/wwdc20/10078

Presenter: Andy Aude

Most common reasons why apps can be terminated in the background
- Colidir
  - Segmentation fault
  - Illegal instruction
  - Asserts and uncaught exceptions
- CPU resource limit
  - High sustained CPU load in background
  - Energy Exception Report
    - Xcode Organizer
    - MXCPUExceptionDiagnostic
  - Reports contain call stack points out hotspots in code
  - Consider moving work into BGProcessingTask
- Watchdog
  - Long hang during key app transitions
    - application(_:didFinishLaunchingWithOptions:)
    - applicationDidEnterBackground(_:)
    - applicationWillEnterForeground(_:)
  - These transitions have a time limit on the order of 20 seconds
  - Terminations are disabled in Simulator and in the Debugger
  - Eliminate deadlocks, infinite loops, synchronous work
  - Report available via MXCrashDiagnostic
- Memory limit exceeded
  - App using too much memory
  - Same limit for foreground and background
  - Use Instruments and Memory Debugger
  - Keep in mind older devices
- Memory pressure exit (jetsam)
  - Not a bug with your app
  - Most common termination
  - System freeing up memory for active applications
  - Reducing jetsame rate
    - Aim for less than 50MB in background
    - Upon background flush state to disk, clear out image views, drop caches
  - Recovering from jetsame
    - Save state upon entering background
    - Adopt UIKit State Restoration
    - User should not realize app was terminated
- Background task timeout
  - UIApplication.beginBackgroundTask(expirationHandler:)
  - UIApplication.endBackgroundTask(_:)
  - Failure to end the task explicitly result in termination
  - Counts exposed via MXBackgroundExitData
  - Evitável
    - Use the named variant of the UIKit API beginBackgroundTask(withName:expirationHandler:)
    - Terminations do not occur in Debugger
    - New console message in iOS 13.4 ( Background Task DatabaseTransaction was created over 30 seconds ago. In Applications running in the background, this creates a risk of termination. Remember to call endBackgroundTask for your task in a timely manner to avoid this. )
  - Expiration handler
    - Implement an expirationHandler
    - Call endBackgroundTask(_:) inside the handler
    - Do not begin new work
    - Do not rely on it exclusively
    - Add telemetry at the start and end of each expiration handler
    - Inspect MXMetricPayload
  - Check backgroundTimeRemaining
    - Only start work if plenty of time remains
    - Unsafe to begin tasks with < 5 seconds remaining
  - Avoid leaking UIBackgroundTaskIdentifier
New MetricKit API (iOS 14)
- MXBackgroundExitData shows how often these terminations happen providing counts of each termination type
  - cumulativeBadAccessExitCount
  - cumulativeIllegalInstructionExitCount
  - cumulativeAbnormalExitCount
  - cumulativeMemoryResourceLimitExitCount
  - cumulativeMemoryPressureExitCount
  - cumulativeSuspendedWithLockedFileExitCount
  - cumulativeAppWatchdogExitCount
  - cumulativeBackgroundTaskAssertionTimeoutExitCount
  - cumulativeNormalExitCount
- Crash reporting via MetricKit
  - Diagnostics on a per-device basis
  - Ability to get crash info programmatically directly from the device
  - MXCrashDiagnostic
    - Stack trace
    - Sinal
    - Exception code
    - Termination reason
  - Check out What's New in MetricKit to get detailed information
How to improve multi-tasking experience?
- Identify and fix terminations
- Reduce memory usage
- Implement state restoration

What's new in MetricKit

https://developer.apple.com/wwdc20/10081

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Integrate your app with Wind Down

https://developer.apple.com/wwdc20/10083

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Feature your actions in the Shortcuts app

https://developer.apple.com/wwdc20/10084

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for intelligence: Apps, evolved

https://developer.apple.com/wwdc20/10086

Presenter: Mark Mikin

This is one of those "why" sessions. Why we should build something?
Intelligent System Experience
- The main idea is to be proactive
- Intelligence is how the OS works with the apps that people use every day to make the "every day" easier for people
- Intelligence is design (it should be viewed as a design practice)
Living design . O que é aquilo?
- The core job of the designer is to help people accomplish something
- One of the key ways a designer can leverage this is by using elements familiar to the user
- People use a signifier or a symbol
- For example, "Share" button. In the case of iOS, almost everyone can easily recognize the "default" share symbol because it consistently gets used across a lot of apps
- Intelligence is a platform convention, it's in a static glyph or icon, like the share button. It's live
- Intelligence manifests itself by adapting to how the system, the platform, conforms to how people use their devices
- Intelligence is expected (people expect their devices and apps to be smart)
Extensibilidade
- Intelligence is powered by an app through extensibility
- Apps have actually been evolving over time
- A lot of the technologies built by Apple that are foundational to the intelligence system (starting from App Extensions debuted at WWDC 2014 and ending with App Clips so far)
- It's built to help growing ecosystem of devices and apps
- Intelligence system is built from a foundation of respecting users privacy
In the next sessions about system intelligence, Apple's team will try to cover it from a few different angles

Design for intelligence: Make friends with "The System"

https://developer.apple.com/wwdc20/10087

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for intelligence: Discover new opportunities

https://developer.apple.com/wwdc20/10088

Presenters: JP Lacerda

Inteligência
- Goal to make your Apple products knowing/understanding you
- Achieve and Discover more, Less tedium, Fewer distraction
- System helps you through suggestions from Siri , Shortcuts , Suggestions , Widgets
Siri / Shortcuts
- Helps you getting things done by a single tap or asking Siri
- Helps you setting up simple and complex operations ran, eg just by your voice
- View shortcuts through the new Siri suggestion Widget displayed just at the right time to you using the new smart stack and on-device intelligence
- Siri suggestions automatically appear at the right place and time, eg restaurant reservations are added automatically to the calendar
- Siri can remind you when it's time to leave right on your lock screen
- Get Siri suggestions in Maps to eg conveniently find your way to the Airport
Privacy / Analytics
- Apple chose opt-in to enable analytics on your device to help improve their intelligence services
- Exemplos
  - 82% of all notification-based check-ins come from suggestions (data from some Airline apps)
  - Apps are visible on average 5x more per day via lock screen, sharing suggestion, search or other entry points
Give your app superpowers
- Think about which entry points are suitable for your app
- Consider how you can measure the impact of intelligence on your app
- Understand intelligence from the users perspective

Discover Core Image debugging techniques

https://developer.apple.com/wwdc20/10089

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Decode ProRes with AVFoundation and VideoToolbox

https://developer.apple.com/wwdc20/10090

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Write tests to fail

https://developer.apple.com/wwdc20/10091

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build for the iPadOS pointer

https://developer.apple.com/wwdc20/10093

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Handle trackpad and mouse input

https://developer.apple.com/wwdc20/10094

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

The Push Notifications primer

https://developer.apple.com/wwdc20/10095

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore Packages and Projects with Xcode Playgrounds

https://developer.apple.com/wwdc20/10096

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Advances in UICollectionView

https://developer.apple.com/wwdc20/10097

Presenters: Steve Breen

Diffable Data Source
- Recapitular
  - UICollectionView was first released in iOS 6
  - UICollectionView was built on the separation of concerns between the data, or the "what"; from the layout, the "where" content is being rendered.
  - For layout, an abstract class is UICollectionViewLayout , and a concrete subclass is UICollectionViewFlowLayout .
  - For the presentation, there are UICollectionViewCell and UICollectionReusableView .
  - In iOS 13, there are two new components for Data and Layout respectively with Diffable Data Source and Compositional Layout.
- Section snapshot [New in iOS 14]
  - Allow data sources to be more composable into section-sized chunks of data.
  - Allow modeling of hierarchical data, which is needed to support rendering outline-style UIs.
Compositional Layout
- Recapitular
  - Compositional Layout was introduced in iOS 13
  - Allows us to build rich, complex layouts by composing smaller, easy-to-reason bits of layout together.
  - Describes what the layout to look like instead of how the layout ought to work.
  - Section-specific layouts to help you build more sophisticated UIs
  - Support for orthogonal scrolling sections.
Lists [New in iOS 14]
- UITableView -like sections right in to any UICollectionView .
- Rich with features you've come to expect from UITableView , like swipe actions and many common cell layouts.
- Easily mix and match Lists with other kinds of layout on a per-section basis.
- Concrete UICollectionViewListCell , header and footer support
- New Sidebar appearance we see in many iPadOS system apps.
Modern Cells
- Cell registrations
  - Simple, reusable way to set up a cell from a view model.
  - Eliminate the extra step of registering a cell class or nib to associate it with a reuse identifier.
  - Use a generic registration type which incorporates a configuration closure for setting up a new cell from a view model.
- Cell content configurations.
  - Standardized layouts for cells similar to what is seen in UITableView standard cell types.
  - Can be used with any cell, or even a generic UIView.
- Background configurations.
  - Similar to content configurations but apply to any cell's background with the ability to adjust properties such as color, border styles and more.

What's new in Universal Links

https://developer.apple.com/wwdc20/10098

Presenter: Christopher Linn

Universal Links
- HTTPS URLs that represent your content both on the web and in your app
- Allow to open your app instead of browser
- Enable by adding an entitlement to your app and a JSON file to your web server - creates secure association between both
- Custom URL schemes not recommended anymore - switch as soon as possible
Support for watchOS
- Same functionalities like on iOS, tvOS and macOS
- Apply entitlement to your WatchKit extension - not your WatchKit App
- Use [WKExtensionDelegate.handle(_ userActivity: NSUserActivity) -> Void](https://developer.apple.com/documentation/watchkit/wkextensiondelegate/2798966-handle) to handle Universal Links
- Use [WKExtension.shared().openSystemURL(url)](https://developer.apple.com/documentation/watchkit/wkextension/1628224-opensystemurl) to open Universal Links in other apps
- Different API on iOS (UIKit) and macOS (AppKit)
Universal Links in SwiftUI
- Now it is possible to handle Universal Links equally on all platforms
- Handle Universal Links using .onOpenURL { url in /* ... */ }
- Open Universal Links in other apps using @Environment (.openURL) var openURL; let url = /* ... */; openURL(url)
Enhanced Pattern Matching
- * matches zero or more characters greedily
- ? matches any one character
- *? matches at least one character
- "components": [{ "/": "/sourdough/?*", "caseSensitive": false }] for case-insensitive pattern matching (macOS Catalina 10.15.5 and iOS 13.5)
- "components": [{ "/": "/中國哲學書電子化計劃/?*", "percentEncoded": false }] for Unicode pattern matching (macOS Big Sur and iOS 14)
- "defaults": { "percentEncoded": false, "caseSensitive": false } to specify defaults for all components (macOS Big Sur and iOS 14)
  - Apply defaults to "details" (includes app IDs and components) or only to "components" to match all elements of the respective arrays
Substitution Variables
- Named lists of substrings to match against
- Names can contain anything but $ , ( , )
- Names are always case sensitive in patterns
- Values can contain ? and * but no other substitution variables
- Values are case-sensitive by default
- Available today in macOS Catalina 10.15.6 and iOS 13.5
- Predefined Substitution Variables
  - $(alpha)* - match upper and lower case letters
  - $(upper),$(lower)* - match either upper or lower case letters
  - $(alnum)* - match upper and lower case letters including digits
  - $(digit),$(xdigit)* - match either digits or hexadecimal digits
  - $(region)** - match every ISO region code defined by Foundation: Locale.isoRegionCodes
  - $(lang)** - match every ISO language code defined by Foundation: Locale.isoLanguageCodes
  - Use "exclude": true to exclude specific patterns
  - Substitution variables can be used to form different combinations of patterns, eg show different menus for different countries
  - Exemplo
```
{
  "appLinks" : {
    "substitutionVariables" : {
      "food" : [ " burrito " , " sushi " ],
      "Canadian food" : [ " burrito " , " poutine " , " tête-de-violon " ]
    },
    "details" : [{
      "appIDs" : [ " ABCDEF.com..example.restaurant " ],
      "components" : [
        { "/" : " $(lang)_CA/$(Canadian food)/ " , "percentEncoded" : false }
        { "/" : " $(lang)_CA/$(food)/ " , "exclude" : true }
        { "/" : " $(lang)_$(region)/$(food)/ " }
      ]
    }]
  }
}
```
Universal Links Workflow
- After download of an app the system checks its entitlements to see if it needs any app-association files, and downloads them
- App association files can now be downloaded in parallel by connecting to an Apple CDN instead of opening one connection per downloaded app
  - CDN is dedicated to associated domains
  - CDN uses single HTTP/2 connection for all associated domains on a device
  - CDN Reduces load on your server
  - CDN routes devices to a known-good, known-fast connection
- Alternate Modes for internal domains not reachable from an Apple CDN
  - Managed Mode when distributing within your organization (see What's New in Managing Apple Devices (WWDC20))
    - System trusted root certificate
    - MDN admin must opt-in
    - Works using any profile
  - Developer Mode when building your app
    - Use any SSL certificate
    - User must opt-in from iOS Settings > Developer > Associated Domains Development or for macOS using the command swcutil developer-mode -e true
    - Only works using a development profile
  - Server path for all modes: https://example.com/.well-known/apple-app-site-association
  - Specify domains for different modes in the entitlements as <string>applinks:testing.example.com?mode=developer</string> (or ?mode=managed or ?mode=developer+managed ) in an array under the key com.apple.developer.associated-domains

Explore the Action & Vision app

https://developer.apple.com/wwdc20/10099

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Keynote ★

https://developer.apple.com/wwdc20/101/

App Library
- Automatically created at the end of your app pages on the Home Screen
- Makes it easier than ever to get to your apps
Widgets on Home Screen
- Richer UI - more possibilities
- Different sizes to choose one that best fits your needs
- Droppable on the home screen
- Widget gallery to explore all widgets
- SmartStack as intelligent assistant which enables you to scroll through your widgets
Picture in Picture on iPhone
- Swipe to the side, out of the screen, and audio keeps playing
- Video keeps playing when switching apps
Siri
- Got smarter and has a new interface which doesn't block your UI anymore
- Can now send audio messages using the messages app - completely hands free
Translate as new app of offline conversation translate
- Conversation mode when switching to landscape mode in the app
Mensagens
- Pinning messages to the top of the screen
- Memoji gets hundreds of new options to customize your avatar, including masts, fist-pumps and more
- Group conversations got some ❤️ by adding inline replies and most-active member widget
Mapas
- More countries like UK, Ireland and Canada
- It gets easier to find places you love and how you get there in an ecological way
- Maps offers Guides that help you discover great new places
- Brand new cycling option to reduce your carbon footprint
- EV-Routing option to optimize your route for electric cars - eg by selecting routes with charging station on your way
CarPlay
- New wallpaper option
- New categories for CarPlay apps: Parking, EV-Charging, and Quick-Food ordering
- Car Key API - first supported by BMW - enable open/close/start your car
App Clips as small, fast parts of an app, designed for speed
- A way to discover what the App Store has to offer
- Launchable from the web, by NFC tags, QR codes or the brand new Apple designed tags
- Needs to be smaller than 10 MB
- Use Sign in With Apple to provide the most seamless app experience
- Use Apply Pay to allow quick payments
- Option to download the full app
iPadOS
- Photos app gets an all new side bar - new way to navigate and organize your photos
- Incoming calls become unobtrusive using notification style UI (available for all apps: WhatsApp, Skype, ...) • available for iOS too
- New searching experience
Apple Pencil
- Scribble lets you hand-write in any text field. iOS converts your writing then to text
- Smart Selection lets you select single words / characters you've written using your pencil using iOS text recognition features
- DataDetectors are used to automatically detect eg phone numbers, email addresses
AirPods
- are now able to automatically switch to new incoming audio sources
- Spatial Audio for AirPods Pro (AirPods Motion API) to emulate movie theatre experience using AirPods gyroscope to sync the sound to your head position/orientation
watchOS 7
- Configure your own watch faces styled by your current living style
- Watch faces can now be shared on Websites or via the usual sharing features of watchOS
- Workout app adds dance, cooldown, functional training and more workouts plus it is renamed to Fitness
- Sleep Tracking is a new app that helps you to get to bed at time using Wind Down which dims all distractions (also available in iPhone)
- Handwashing detection to make sure you wash as long as you're supposed to (20 seconds shown in demo)
Privacy Improvements
- Location only share rough location
- Camera ...
- Tracking Control require apps to ask before tracking
- App Privacy makes data tracked by developers visible to the users before they download the app
Lar
- Alliance among different manufacturers to make smart home devices even better
- Adaptive lighting to auto-adjust color temperature throughout the day
- Cameras get activity zones, richer notifications
- Face recognition extends to Home Pod
- Camera content can be displayed on TV via your Apple TV
- Apple TV
  - Foto em imagem
  - Better Airplay in full 4K
  - Apple TV+ already on over 1 billion devices
  - Foundation as newest production only available on Apple TV+
macOS Big Sur
- use of a lot of translucency
- Design refresh for all system apps
- New side and compact, space efficient toolbars
- Control center now on the mac
- Notification Center
  - Notification grouping
  - iOS widgets also available on the mac
- Messages with new search, photo picker, messages effects, pin conversations, inline replies and more
- Maps with indoor-maps, favorites, ETA from friends and all of it implemented using Catalyst
- Safari with 50% faster page loading, Privacy Report via toolbar button, Web Extensions API, built-in translation
Mac
- Processor-transition to Apple Silicon - Apple's own processor line - bye bye Intel
- Universal 2 is the new universal binary type that contains binaries compiled for both architectures
- Rosetta 2 lets existing app run on new architectures from day one by making them compatible at installation time
  - Supports iPhone and iPad apps directly

Meet Watch Face Sharing

https://developer.apple.com/wwdc20/10100

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design great widgets

https://developer.apple.com/wwdc20/10103

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Adopt the new look of macOS

https://developer.apple.com/wwdc20/10104

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build for iPad

https://developer.apple.com/wwdc20/10105

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Meet Scribble for iPad

https://developer.apple.com/wwdc20/10106

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in PencilKit

https://developer.apple.com/wwdc20/10107

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Support hardware keyboards in your app

https://developer.apple.com/wwdc20/10109

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Support local network privacy in your app

https://developer.apple.com/wwdc20/10110

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Boost performance and security with modern networking

https://developer.apple.com/wwdc20/10111

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build local push connectivity for restricted networks

https://developer.apple.com/wwdc20/10113

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

iPad and iPhone apps on Apple Silicon Macs

https://developer.apple.com/wwdc20/10114

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

AutoFill everywhere

https://developer.apple.com/wwdc20/10115

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

VoiceOver efficiency with custom rotors

https://developer.apple.com/wwdc20/10116

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Accessibility design for Mac Catalyst

https://developer.apple.com/wwdc20/10117

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Create app clips for other businesses

https://developer.apple.com/wwdc20/10118

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Introduction to SwiftUI

https://developer.apple.com/wwdc20/10119

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Streamline your app clip

https://developer.apple.com/wwdc20/10120

Presenters: Yongjun Zhang, Luming Yin

Best practices
- Focus on essential tasks
- Limit the features. Reserve complex features for your app
- Require all assets for initial experience
- Do not include splash screens
- Avoid requiring people to sign up before finishing their task
- Only ask for location and notification permissions if needed (more on this below)
- Make sure your App Clip has the same name and icon as your app
- Put shared assets in a shared asset catalog
- Autenticação
  - Support Sign in with Apple
  - Use ASWebAuthenticationSession for other federated login
  - Offer username and password login for existing users
  - Offer "Sign In With Apple" upgrade in the app
- For privacy reasons, and because App Clips are ephemeral, some contents are not available to App Clips, such as HealthKit info
- App Clips can request permission to use Bluetooth, the camera, and microphone
Streamlining Transactions
- 2 new types of ephemeral permissions: Location and Notification
  - Allows App Clips to check if the user is within a region, without prompting for location permission
    - Add NSAppClipRequestLocationConfirmation with value true in your Info.plist to enable this
    - Supports checking a region with a radius of up to 500 meters
  - Allows App Clips to send notifications for up to 8 hours after each launch, without prompting for notification permission .
    - Add NSAppClipRequestEphemeralUserNotification with value true in your Info.plist to enable this
    - Check the authorization status in the NotificationSettings , under the new .ephemeral status
  - Users can explicitly disable these permissions via App Clip settings panel
  - App Clips can prompt the user for full Location and Notifications access, although discouraged
- Strongly suggest using ApplePay
- Strongly suggest using "Sign In With Apple"
- Use AuthenticationServices API to sign your users in without showing a login screen (assuming they have already previously signed up in your website for instance)
Transition users to your app
- iOS suggests downloading your app from App Clip experiences, banners and App Clip settings
- You can embed StoreKit SKOverlay in a view
  - Suggestion: display this overlay only after the user finishes their task, eg after payment
- Transfer data on device with a secure App Group
  - Only accessible between your App Clip and your app
  - Once user downloads the app, the App Group will be transferred to the app after the App Clip is deleted
  - Migrate your "Sign In With Apple" session from your App Clip by persisting the user ID in the secure App Group. Use ASAuthorizationAppleIDProvider to verify the user's session without prompting UI

Discover AppleSeed for IT and Managed Software Updates

https://developer.apple.com/wwdc20/10138

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Leverage enterprise identity and authentication

https://developer.apple.com/wwdc20/10139

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build location-aware enterprise apps

https://developer.apple.com/wwdc20/10140

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build scalable enterprise app suites

https://developer.apple.com/wwdc20/10142

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Mac Catalyst

https://developer.apple.com/wwdc20/10143

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for Game Center

https://developer.apple.com/wwdc20/10145

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Configure and link your app clips

https://developer.apple.com/wwdc20/10146/

Presenters: Ada Chan, Luming Yin

Introdução
- App Clips provide entry points to your users to experience your app with minimal friction.
- Use deep-linked navigation to present the App Clip
User Quest
- User is in a smoothie shop. They see an NFC tag and tap it using the phone.
- An app clip shows up on the phone's lockscreen with summarized detail about that smoothie.
- User taps "open" and a single screen of your app shows up.
- User can then proceed to the payment via Apple Pay.
Ativação
- Tapping NFC tags or scanning QR codes - they're just deep links after all (a URL)
- Maps and Siri Nearby Suggestions (for registered businesses)
- Smart app banner in your website (shown in Safari and Messages)
- Apple App Clip codes will be introduced later this year (it's a prettified QR code)
- If the user already has the your app installed, following an App Clip link will open the full app instead.
Configurar
- Configure web server and App Clip for link handling
  - Web Server: Update the apple-app-site-association file
  - App Clip: Add associated domains entitlement and handle NSUserActivity
- Configure App Clip default and advanced experiences on App Store Connect
  - Layout requirements:
    - Title: 18 chars limit
    - Subtitle: 43 chars limit
    - Imagem:
      - Size: 3000 x 2000px
      - Aspect Ratio: 3:2
      - Format: png/jpg
      - Transparency: No
  - Práticas recomendadas
    - URL mapping is based on most specific prefix match against registered App Clip experience URLs
    - Your App Clip must be able to launch using an exact registered URL. Por exemplo:
      - App registers https://bikesrental.com/rent instead of https://website.com/rent?bikeID=2
      - When receiving https://website.com/rent?bikeID=2, it should be able to deliver the https://website.com/rent App Clip
      - App is responsible for parsing the remaining arguments and presenting the specific bike with ID 2
      - You can also register a more specific URL if you want to provide a different and more specific App Clip experience for it
- Configure the Smart App Banner to open App Clip (add this if the content of your web page can be delivered as a better and more streamlined app experience)
  - Add/update your website's HTML to add the Smart App Banner meta tag
Teste
- Specify an App Clip URL under the _XCAppClipURL environment variable to launch App Clip from Xcode
- TestFlight - new App Clips section in App Store Connect

Distribute binary frameworks as Swift packages

https://developer.apple.com/wwdc20/10147

Presenters: Boris Buegling

Xcode 11
- Introduction of Swift Packages to distribute libraries as source code
- Introduction of XCFrameworks to distribute closed-source binary frameworks and libraries
Xcode 12 adds support for binary dependencies
Binary Dependencies (XCFrameworks)
- Used to distribute closed-source frameworks, static and dynamic libraries
- Contain a single module
- Easily addable via the Xcode > File > Swift Packages > Add Package Dependency
- Has sub directories corresponding to platform and target environment, each containing a framework
- Declare dependency in your Package.swift using .package(url: "https://github.com/owner/package", from: "1.0.0")
Distribute Binary Frameworks as a Swift Package
- New target type .binaryTarget(name: "Emoji", url: https://example.com/Emoji/Emoji-1.0.0.xcframework.zip, checksum: "6d98....")
- Binary targets can be offered to clients just like regular targets
- Binary Targets
  - Use XCFrameworks
  - Only supported on Apple platforms
  - HTTPS or path based - paths can point to files inside your package
  - Name corresponds to the module name
  - Use semantic versioning
Create your own Binary Dependency
- Create File > New Swift Package
- Replace template-added targets and add a binary target
- Compute the checksum using swift package compute-checksum Emoji-1.0.0.xcframework.zip
- Set Build Libraries for Distribution build setting
- Archive each variant
- xcodebuild -create-xcframework
- See 2019 session "Binary frameworks in Swift" or read the session notes which is way quicker
Tradeoffs of Binary Dependencies
- Harder to debug since source code is missing
- You won't be able to compile for your specific platform if not included by the author

Inspect, modify, and construct PencilKit drawings

https://developer.apple.com/wwdc20/10148

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Structure your app for SwiftUI previews

https://developer.apple.com/wwdc20/10149

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in CareKit

https://developer.apple.com/wwdc20/10151

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Use model deployment and security with Core ML

https://developer.apple.com/wwdc20/10152

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Get models on device using Core ML Converters

https://developer.apple.com/wwdc20/10153

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Control training in Create ML with Swift

https://developer.apple.com/wwdc20/10156

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Deliver a better HLS audio experience

https://developer.apple.com/wwdc20/10158

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build an Endpoint Security app

https://developer.apple.com/wwdc20/10159

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Formatters: Make data human-friendly

https://developer.apple.com/wwdc20/10160

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for location privacy

https://developer.apple.com/wwdc20/10162

Presenter: Rachel Needle

Today people share precise location data
In iOS 14, Core Location allowing users to control and share their approximate location
All kinds of apps will be impacted by this change (even Apple's apps)
How to adapt the app to work without precise location?
- Prioritize user control
  - Give everyone control over their location data they share and respect their preferences
  - Don't require precise location
  - Replace precise data with approximate where possible
  - Identify where else you use precise location and remove non-essential uses of precise location
- Build trust through transparency
  - Communicate with people about what data your app uses and how that data is used
  - Make status easy to access
  - Allow users to change their decision
- Offer proportional value
  - Only ask for precise location when you really need it
  - Request precise location in response to user action
  - Position the request close to the value it provides
- Consider checking out these two sessions to get detailed information
  - Build trust through better privacy
  - What's new in location

Advancements in the Objective-C runtime

https://developer.apple.com/wwdc20/10163

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

XCTSkip your tests

https://developer.apple.com/wwdc20/10164

Presenters: Wil Addario-Turner

Tests can pass or fail, or with XCTSkip , be marked with an explicit "skip" result.
In Xcode 11.4, XCTSkip , XCTSkipIf and XCTSkipUnless were introduced to allow skipping tests at runtime.
Call throw XCTSkip("message") and the test will be skipped.
XCTSkipIf skips when the expression is true. XCTSkipUnless skips when the expression is false.
Check the results from the test navigator and the test report with the line where the skip occurred, along with a reason explaining why.

Embrace Swift type inference

https://developer.apple.com/wwdc20/10165

Presenter: Holly Borla

Leveraging type inference
- A type can be inferred by the compiler given the context surrounding a variable or function
- SwiftUI code relies on type inference for reusable views
- A demo is presented showing a SwiftUI component being built using generics
How type inference works in compiler
- Think of type inference as a puzzle
- It resolves the puzzle by filling in the missing pieces using clues from the source code
- Solving one puzzle can give the compiler more clues on how to solve other puzzles
- Type inference errors
  - If a puzzle can't be solved, there's an error in the source code
  - During type inference, the compiler will record information about errors in source code
  - Compiler uses heuristics to attempt to fix errors in order to continue type inference
  - Once type inference is done, the compiler will provide actionable error messages based on collected information (some errors might have auto-fixes)
- Swift 5.3 and Xcode 12 improved error handling a lot, showing more meaningful and reliable error messages
Using Swift and Xcode to fix compile errors
- The compiler will leave breadcrumbs about what the compiler was doing when it found an error
- This can help you connect the dots between the error you're seeing on the editor and other files in your project
- Hold ⌥ + ⇧ on an error breadcrumb and drag it to the right of the source editor, to open the source editor and the breadcrumbs details side by side

Safely manage pointers in Swift

https://developer.apple.com/wwdc20/10167

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore logging in Swift

https://developer.apple.com/wwdc20/10168

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Swift packages: Resources and localization

https://developer.apple.com/wwdc20/10169

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Swift

https://developer.apple.com/wwdc20/10170

Presenters: Ted Kremenek, Kyle Macomber

Swift Releases
- Xcode 11.4 - Swift 5.2
- Xcode 12 (beta) - Swift 5.3
Runtime Performance
- Code Size
  - Code size is the part of the app that represents the machine code representation of the app's logic
  - Swift 5.3 is below 1.5 times the code size of Objective-C version (based on app that ships with iOS)
  - Size difference is inevitable because of Swift safety features
  - SwiftUI app binary code size can be reduced by 40% (based on MoviesSwiftUI app)
- Memory Layout
  - Comparing models with three properties in Obj-C ( NSUUID , NSString and float ) and Swift ( UUID , String , Float )
  - In Obj-C, object variables are just pointers which then hold a pointer to their properties
  - Swift's use of value types avoid the need to access values via pointers (UUID and Strings)
  - Significant memory benefit because it is allocated directly within array storage (contiguous block of memory)
  - Heap memory use comparison: 20kB in Swift 5.1 vs 35kB in Obj-C (400 models in array)
  - Swift's Standard Library now is below Foundation in the stack which means it can be used to develop low-level frameworks for Objective-C frameworks where previously C has to be used!
Diagnóstico
- New diagnostics in the Swift compiler result in more precise and actionable errors
- Additional notes in error messages (SwiftUI as an example)
- More info on swift.org
Code completion
- Much better code completion thanks to improvements in SourceKit
- Code completion for dictionary literals, ternary expressions and more dynamic features like key paths
- Code completion in Xcode 12.0 is 15x faster compared to Xcode 11.5
Code Indentation
- Improved indentation formatting in chained methods calls, tuples, multiline if and guards
- Improved indentation in SwiftUI as well
Depuração
- Debugger now displays the reason for Swift runtime failure traps
Cross-Platform Support
- Multiple platform support
  - Apple Platforms
  - Ubuntu 16.04, 18.04, 20.04
  - CENTOS 8
  - Amazon Linux 2
  - Windows (coming soon)
- Swift on AWS Lambda
  - Runtime is open-source and is available on GitHub
Linguagem
- Swift Evolution website
- Multiple trailing closure syntax SE-0279
  - It's important to set the correct base name of the method that will indicate the first trailing closure that its label will be dropped
- Key Path Expressions as Functions SE-0249
- @main : Type-Based Program Entry Points SE-0281
  - The standardized way to delegate a program's entry point
- Increased availability of implicit self in @escaping closures when reference cycles are unlikely to occur SE-0269
  - Now it's possible to add self to the capture list
  - In Swift 5.3, if self is a structure it can be omitted entirely from the closure
- Multi-Pattern Catch Clauses SE-0276
- Enum Enhancements
  - Comparable conformance is now synthesized automatically SE-0266
  - Enum cases as protocol witnesses SE-0280
- Embedded DSL Enhancements
  - Builder closures
  - Swift 5.3 introduces pattern matching statements like if let and switch
  - Builder inference ( @SceneBuilder is not longer needed)
Bibliotecas
- Float16 SE-0277
  - Half-width floating point type
  - Performance gains but low precision and small range
- Apple Archive
  - Modular archive format
  - Fast compression
  - Idiomatic Swift API
- Swift System
  - Idiomatic Swift interface to system calls
  - Low-level currency types
  - Wraps Darwin APIs
- OSLog
  - Unified logging API
  - Faster and more expressive (formatting options)
- Pacotes
  - Swift Numerics
    - Support for complex numbers and basic math functions
  - Swift ArgumentParser
  - Swift Standard Library Preview
    - Includes features that have not been included in the release yet

What's new in watchOS design

https://developer.apple.com/wwdc20/10171

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design great app clips

https://developer.apple.com/wwdc20/10172

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Get the most out of Sign in with Apple

https://developer.apple.com/wwdc20/10173

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore app clips

https://developer.apple.com/wwdc20/10174

Presenters: James Savage, Luming Yin

What is an App Clip?
- App Clip Experience URL is required to run App Clips which are parts of your app
- On-demand app experiences
App Clip Experiences
- App Clip URLs are similar to Universal Links
- Registered using App Store Connect
- Surfaced through user actions via NFC / QR codes / links in Safari or other apps / Apple App Clip codes combine the ease of NFC and visual codes so they can be tapped or scanned
New App Clip Target in Xcode
- Contains all assets
- Needs to be submitted along with the app for review
- It gets downloaded separately if the app is not installed on user's device
- Should be as small as possible for quick downloads (less than 10MB but with enough assets to load UI quickly)
- Focused user flows - one at a time
Demonstração
- Ordering smoothies
- New App Clip target embedded in the application
  - Name and bundle ID for App Clip added
  - It can build and run with boilerplate code right away
- Add code and resources
  - NutritionFacts dependency added
  - Create new Assets Catalog as shared assets
    - Drag App Icon, Colors and other image assets required for app clip into the shared assets catalog
  - Add the required model and view files to App Clip target
    - Let go of unwanted Swift files like navigation
  - Conditionally compile out the references to files not added to App Clip
    - Build Settings > Swift Compiler custom flags > Active Compilation Conditions > Add APPCLIP condition for required schemes.
    - Use #if !APPCLIP to compile out unwanted references in Swift code
- Write code for App Clip
  - Add required models and views to the new AppClip
  - Include existing views in the App Clip's content view
Visão geral da tecnologia
- App Clips are built using same UI components as an app
- When launched, it receives NSUserActivity
  - Use the URL to identify the type of experience to be handled
- Unlike extensions, App Clip can make use of all iOS SDK APIs
  - Note: Access to sensitive data is limited
  - Always check if data is available
- New location confirmation API helps get the location quickly without requesting full access
- New API for migrating data from App Clip to main app using shared data container once installed
- App Clip and its local storage will be deleted after period of inactivity
  - Not included in backups
- Can not be launched via Universal Links or custom URL schemes
- Can not include bundle extensions like content blockers
Device states and transitions
- User scans QR code
- iOS locates, downloads and runs the App Clip
- If the App Clip is not revisited for a while, the App Clip and its data gets deleted
  - Treat App Clip data as cache; which can be deleted
- If the App Clip is visited frequently, its lifespan will be extended and data may never be cleared
  - When user downloads your app, iOS will automatically migrate the data container and the permissions that were already granted by the user
  - iOS still deletes the App Clip and its container after copying the data container to the app
Other technologies
- Apple Pay
- Notificações
- Swiftui
- SKOverlay / AppStoreOverlayModifier (refer to What's new with in-app purchase session)
- ASAuthorizationController for sign in or sign up

The details of UI typography

https://developer.apple.com/wwdc20/10175

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Master Picture in Picture on tvOS

https://developer.apple.com/wwdc20/10176

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in HealthKit

https://developer.apple.com/wwdc20/10182

Presenter: Netra Kenkarey

Symptoms
- Developers can now track symptoms in HealthKit, read and write symptom samples
- HealthKit attempted to cover and track a wide range of symptoms (shortness of breath, sleep changes, appetite changes, fever, headache, etc.)
- There are 13 symptom data types in HealthKit
Electrocardiogram (ECG)
- ECG samples will be available for reading in the latest version of iOS and watchOS
- An ECG sample can be read as an HKElectrocardiogram (it represents a waveform as a series of voltage values)
- ECG sample has important properties that describe the measurements
- classification ( HKElectrocardiogram.Classification )
  - Apple Watch will give the result of the recording in the form of a classification
  - The classification is divided into 2 types
    - Sinus Rhythm (heart is beating in a uniform pattern)
    - Atrial fibrillation (form of irregular rhythm, user should probably go see their doctor)
  - If Apple Watch is unable to determine the ECG result, either due to a low or a high heart rate or due to any other reason, the result is considered inconclusive
- symptomStatus ( HKElectrocardiogram.SymptomsStatus )
  - It tells if the user associated a symptom with this ECG (eg heartburn, tightness in the chest)
  - The symptom experienced can be recorded along with the ECG
- averageHeartRage ( HKQuantity? )
- samplingFrequence ( HKQuantity? )
- numberOfVoltageMeasurements ( Int )
  - It refers to the individual voltage measurements that make up an ECG sample
HKElectrocardiogramQuery
- To retrieve the individual measurements run the HKElectrocardiogramQuery
- Fetch the ECG samples with any of the HealthKit queries and then initialize the HKElectrocardiogramQuery with the fetched sample
- When this query is executed on the HealthStore, you get the individual voltage measurements back in the ECG and the data handler
Mobilidade
- New set of mobility types (available for reading and writing on the latest iOS and watchOS)
  - Walking speed and step length
  - Walking assymetry and double support percentage
  - Stair ascent and descent speed
  - Six-minute walk test distance

Synchronize health data with HealthKit

https://developer.apple.com/wwdc20/10184

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Visually edit SwiftUI views

https://developer.apple.com/wwdc20/10185

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Discover WKWebView enhancements

https://developer.apple.com/wwdc20/10188

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Secure your app: threat modeling and anti-patterns

https://developer.apple.com/wwdc20/10189

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Create quick interactions with Shortcuts on watchOS

https://developer.apple.com/wwdc20/10190

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Add configuration and intelligence to your widgets

https://developer.apple.com/wwdc20/10194

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Broaden your reach with Siri Event Suggestions

https://developer.apple.com/wwdc20/10197

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Platform State of the Union ★

https://developer.apple.com/wwdc20/102/

Some new features: AirPods Motion API , SwiftPM resources , New Catalyst Controls , ARKit 4 , Widgets in SwiftUI , Depth API , TestFlight 100 Testers , SwiftUI Lifecycle , Catalyst Native Screen Resolution , Complications in SwiftUI , Xcode StoreKit Testing , HomePod Music Services , App Clips , New SwiftUI Controls , Xcode Tabs , ...
Users can make your app the default app used for email and set a default web browser
Developers can bring existing web-browser extensions to Safari using a new command line tool
FindMy can now leverage all iPhones out there to locate your devices, even if they are not connected to the internet (applicable to all kinds of objects)
Mac transition to Apple Silicon - Apple's own processor line - brings more security, better performance, longer battery life and amazing graphics
- Vantagens
  - Cached cloud content can be kept up to date for days, even if your mac goes to sleep
  - Higher quality, hardware-supported 4:4:4 encoder for eg better image quality when connecting your Mac via SideCar
  - Best-In-Class platform security
- Apple provides a Developer Transition Kit
  - Mac mini enclosure + A12Z SoC
  - 16GB memory, 512GB SSD
  - macOS Big Sur Developer Beta + Xcode
- First Macs will appear by end of the year
Universal 2 create universal apps that run on both Apple Silicon and older architectures
Porting to Apple Silicon takes only a few days, even for grown projects. As a result, all Apple system apps are already converted in macOS Big Sur
Rosetta 2 lets existing app run on new architectures from day one by making them compatible at installation time
- Supports iPhone and iPad apps directly
iOS/iPad Apps natively on Mac
- Apps will run natively on the Mac
- Apps will automatically support features like resizing, Dark Mode, scrolling, multi-window, native share sheets, ...
- Apple plans to make iOS/iPadOS apps available on the App Store for macs running with Apple Silicon
macOS Big Sur - macOS 11
- Rounded dock ?
- Control Center for mac
- New translucent look for notification center
- Refined layout for menus of the menu bar
- New sheet presentation - parent window is dimmed
- Completely re-designed toolbars with extending search fields and images provided by SF-Symbols
- App-specific accent color
- macOS Catalyst
  - macOS-specific implementation of iOS API's
  - Native resolution support
  - Messages re-written in Catalyst
  - SwiftPlaygrounds will support multiple windows
iPadOS
- New sidebars can now expand from two-column layout to three-column layout - even available in portrait mode
- Recommended to use side bars instead of tab bars
- New inline emoji picker - also for custom apps
- New color picker UI - easy to adopt
- New Depth APIs give you access to precise distance info captured by the LiDAR scanner on iPad
- Dramatic improvement of people inclusion and motion detection - objects can be placed in front or behind real objects in the world
- Apple Pencil
  - New handwriting improvements will work in your apps without any additional work
  - Hand-writing for any UITextField
  - Automatic support for Scribble which converts any hand-written text to typed text
  - Stroke API gives access to the strokes as the user draws
  - Smart Selection lets you select single words / characters you've written using your pencil and iOS text recognition features
- iOS 14
  - Widgets
    - New widgets take UX to a whole new level
    - Users can move them to the home screen
    - Widgets are packed as SwiftUI archives which are optimized for performance
    - Are rendered by the system at the right time, when the user needs them
    - Can be smartly stacked to consume less space and let the user flip through them
    - Stack automatically moves the right widget to the top at just the right time
    - Configurable in the Widget Gallery
  - App Clips
    - Small part of the app which is light/fast and easy to discover
    - Can use Apple Pay and Sign in With Apple to provide a seamless UX
    - Easily discoverable in a variety of ways, like other apps or places in the real world via new Apple-designed (QR-like) codes which are basically NFC tags
    - Introduce users to what your app offers
  - Misc. New Features
    - Cycling directions, Guides and EV routing in Maps
    - Translate app
    - Messages inline replies
    - Car keys
    - App Library
    - On device dictation
- watchOS 7
  - Xcode is now able to preview watchOS complications
  - SwiftUI complications
  - Watch-face sharing via any sharing capabilities, eg Messages, social media, etc
- Xcode 12
  - Cleaner, more expressive UI
  - Navigators realized using the new Side Bar
  - Any kind of content is now openable in document tab
  - Navigate through nested calls in compiler failure messages
  - StoreKit test environment lets you unit test In-App Purchase and Subscriptions
  - New StoreKit transaction manager shows details during debugging
  - Faster code completion with simplified presentation
- Swiftui
  - All SwiftUI apps will continue to compile without additional changes (Apple added no breaking changes - just extensions)
  - Lazy statement makes large collections of views way less memory hungry and makes scrolling snappy again
  - Now contains app-structure APIs for all Apple platforms, eg @main , @SceneBuilder , Settings , ...

Design for intelligence: Meet people where they are

https://developer.apple.com/wwdc20/10200

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Create great enterprise apps: A chat with Box's Aaron Levie

https://developer.apple.com/wwdc20/10204

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design with iOS pickers, menus and actions

https://developer.apple.com/wwdc20/10205

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for iPad

https://developer.apple.com/wwdc20/10206

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

SF Symbols 2

https://developer.apple.com/wwdc20/10207

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Core NFC

https://developer.apple.com/wwdc20/10209

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Modernize PCI and SCSI drivers with DriverKit

https://developer.apple.com/wwdc20/10210

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Port your Mac app to Apple Silicon

https://developer.apple.com/wwdc20/10214

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in ResearchKit

https://developer.apple.com/wwdc20/10216

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore numerical computing in Swift

https://developer.apple.com/wwdc20/10217

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build localization-friendly layouts using Xcode

https://developer.apple.com/wwdc20/10219

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Handle interruptions and alerts in UI tests

https://developer.apple.com/wwdc20/10220

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Get your test results faster

https://developer.apple.com/wwdc20/10221

Presenters: Sean Olszewski

The Testing Feedback Loop
- Write tests > run tests > Interpret result >if sufficient confidence [ > Next task] else go back to write tests
- Short feedback loops is important because that means you get results from your tests faster, you can ship features to your users faster.
- Real world example: Result bundle from that CI job, which never finished. Due to dead lock, poorly chosen timeout.
Execution Time Allowance [NEW in XCode 12]
- When enabled, Xcode enforces a limit on the amount of time each individual test can take. When a test exceeds this limit, Xcode will first capture spin dump, then kill the test that hung, restart the test runner, so that the rest of the suite can execute.
- A spin dump shows you which functions each thread is spending the most time in. It's also possible to manually capture spin dump from Terminal using the spin dump command or from within Activity Monitor.
- By default, each test gets 10 minutes. If you need to a specific test or test class, you can use the executionTimeAllowance API to special case a particular test or subclass. For values under 60 seconds, they'll be rounded up to 60 seconds, the nearest whole minute.
- Prevent a test requests unlimited time by enforcing a maximum allowance.
- You can customize the default time allowance and a maximum allowance either via a setting in the Test Plan or through an Xcodebuild option.
- Use XCTest 's performance APIs to automate testing for regressions in the performance. Use Instruments to identify what parts of your code are slow,
Parallel Distributed Testing
- Xcode build will distribute tests to each run destination by class. Each device runs a single test class at a time.
- If you're testing logic that is device or OS specific, this can lead to unexpected failures or skipped tests.

Create custom apps for employees

https://developer.apple.com/wwdc20/10222

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Deploy Apple devices using zero-touch

https://developer.apple.com/wwdc20/10223

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Meet Audio Workgroups

https://developer.apple.com/wwdc20/10224

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Improve stream authoring with HLS Tools

https://developer.apple.com/wwdc20/10225

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Record stereo audio with AVAudioSession

https://developer.apple.com/wwdc20/10226

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Low-Latency HLS

https://developer.apple.com/wwdc20/10228

Presenter: Roger Pantos

Comes out of beta this year
Available in iOS 14, tvOS 14, watchOS 7 and this year's macOS
Includes support for bit-rate switching, FairPlay Streaming, fMP4 CMAF, ad insertion, captioning
Native app support, no entitlement necessary
draft-pantos-hls-rfc8216bis07 and later now includes LL-HLS
Includes Low-Latency Server Configuration Profile
Includes CDN tune-in algorithm
Updated informative articles on developer.apple.com
- Protocol Extension for Low-Latency HLS
- HLS Authoring Specification for Apple Devices
Significant changes and improvements to the protocol
- Reducing segment delay
  - Approach described last year using HTTP/2 Push to send segment with Playlist is not compatible with some delivery models
  - Replaced Push with Blocking Preload Hints
    - Client requests next part in advance
    - Server will hold on to the request until it can send it
    - Also triggers global CDN cache fill
    - Discover HLS Blocking Preload Hints session for more information
- Other improvements
  - Eliminated HLS report
    - All Rendition Reports are provided unconditionally
  - Defined EXT-X-DATERANGE handling for Playlist Delta Updates
    - Optimize Live Streams with HLS Playlist Delta Updates session for more detailed information
  - Added signaling of gaps in Parts and Rendition Reports
    - New attributes: GAP=YES in EXT-X-PART and EXTT-X-RENDITION-REPORT
    - This allowing clients to deal better with encoded outages in Low-Latency streams
Low-Latency HLS Tools changes
- Reference implementation now produces fMP4/CMAF
- Added self-contained LL-HLS origin written in Go
- Incorporated Low-Latency HLS tools into the regular HLS tools package
  - Find out more in Improve Stream Authoring with HLS Tools session
Summary of important changes
- Replaced HTTP/2 Push with Preloading Hinting
- Simplified Delivery Directives
- Generate CMAF in reference tools
Everything is included in the current HLS spec

Discover HLS Blocking Preload Hints

https://developer.apple.com/wwdc20/10229

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Optimize live streams with HLS Playlist Delta Updates

https://developer.apple.com/wwdc20/10230

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Reduce latency with HLS Blocking Playlist Reload

https://developer.apple.com/wwdc20/10231

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Adapt ad insertion to Low-Latency HLS

https://developer.apple.com/wwdc20/10232

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

The artist's AR toolkit

https://developer.apple.com/wwdc20/10601

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Harness Apple GPUs with Metal

https://developer.apple.com/wwdc20/10602

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Optimize Metal apps and games with GPU counters

https://developer.apple.com/wwdc20/10603

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Shop online with AR Quick Look

https://developer.apple.com/wwdc20/10604

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Gain insights into your Metal app with Xcode 12

https://developer.apple.com/wwdc20/10605

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore ARKit 4

https://developer.apple.com/wwdc20/10611

Presenters: Quinton Petty, Praveen Gowda

Location Anchors
- Geo-referenced AR Content
- Uses "visual localization" from Maps
  - No processing in the cloud
  - No images sent back to Apple
- Pinned to a geo-location
- 3 main parts
  - ARGeoTrackingConfiguration
  - ARGeoAnchor
  - ARGeotrackingStatus
- Device support A12 Bionic or later + GPS support
- Requires availability checks for both device and location
- ARGeotrackingStatus
  - State
  - StateReason
  - accuracy : low, medium, high
- Methods for converting between local and latitude / longitude positions via getGeoLocation(forPoint:)
- Recommended to point towards buildings / static objects
- May struggle in wide open spaces (eg a field)
- Locations currently available: San Francisco Bay Area, Los Angeles, New York, Chicago and Miami
- Sample: Tracking Geographic Locations in AR
Scene Geometry
- Topological map of environment
- Semantic classification
- Allowing for:
  - Oclusão
  - Física
  - Virtual lighting
- Based upon the Depth API
Depth API
- Provides a dense depth image
- Use sceneDepth under frame semantics
- Runs at 60Hz, on every ARFrame
- depthMap and confidenceMap provided
- Depth map provided as CVPixelBuffer
- ARConfidenceLevel : high, medium or low
- Available on LiDAR devices
Object Placement
- Improvements in Raycasting
- Quicker placement with LiDAR sensor
- Allows for placing on a white wall
- Raycasting is recommend over hit-testing
- 2 types of query:
  - Raycast
  - Tracked Raycasts
Face Tracking
- Support added for non-TrueDepth iPhones
- Requires A12 processor or later
- iPhone SE (2020)

What's new in RealityKit

https://developer.apple.com/wwdc20/10612

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in USD

https://developer.apple.com/wwdc20/10613

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Advancements in Game Controllers

https://developer.apple.com/wwdc20/10614

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build GPU binaries with Metal

https://developer.apple.com/wwdc20/10615

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Debug GPU-side errors in Metal

https://developer.apple.com/wwdc20/10616

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Bring keyboard and mouse gaming to iPad

https://developer.apple.com/wwdc20/10617

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Tap into Game Center: Dashboard, Access Point, and Profile

https://developer.apple.com/wwdc20/10618

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Tap into Game Center: Leaderboards, Achievements, and Multiplayer

https://developer.apple.com/wwdc20/10619

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Support performance-intensive apps and games

https://developer.apple.com/wwdc20/10621

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Bring your Metal app to Apple Silicon Macs

https://developer.apple.com/wwdc20/10631

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Optimize Metal Performance for Apple Silicon Macs

https://developer.apple.com/wwdc20/10632

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Capture and stream apps on the Mac with ReplayKit

https://developer.apple.com/wwdc20/10633

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Discover search suggestions for Apple TV

https://developer.apple.com/wwdc20/10634

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Accelerate your app with CarPlay

https://developer.apple.com/wwdc20/10635

Presenters: Jonathan Hersh, Allen Langmaier

New CarPlay App Possibilites
- EV charging
- Estacionamento
- Quick food ordering
Audio Apps
- Playable content template will be deprecated
- New audio template
New Templates
- Communication Apps
  - CPMessageListItem
  - Contact template
- List template
- Tab bar template
- Now playing template
- Point of interest template
- Information template
CarPlay Design Principles
- Design for the driver
- Streamline interactions
- Reuse app configuration
- Launch first in CarPlay
- CarPlay apps must adapt UIScene
Updates to development
- Dynamic updates to list elements
- CPListItem
- CPListImageRowItem

What's new in streaming audio for Apple Watch

https://developer.apple.com/wwdc20/10636

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in managing Apple devices

https://developer.apple.com/wwdc20/10639

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Design for the iPadOS pointer

https://developer.apple.com/wwdc20/10640

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PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Handle the Limited Photos Library in your app

https://developer.apple.com/wwdc20/10641

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build Image and Video Style Transfer models in Create ML

https://developer.apple.com/wwdc20/10642

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build a SwiftUI view in Swift Playgrounds

https://developer.apple.com/wwdc20/10643

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Use Swift on AWS Lambda with Xcode

https://developer.apple.com/wwdc20/10644

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Support multiple users in your tvOS app

https://developer.apple.com/wwdc20/10645

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Web Inspector

https://developer.apple.com/wwdc20/10646

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Become a Simulator expert

https://developer.apple.com/wwdc20/10647

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Unsafe Swift

https://developer.apple.com/wwdc20/10648

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Add custom views and modifiers to the Xcode Library

https://developer.apple.com/wwdc20/10649

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PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Sync a Core Data store with the CloudKit public database

https://developer.apple.com/wwdc20/10650

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in App Store Connect

https://developer.apple.com/wwdc20/10651

Presenter: Daniel Miao

App Clips
- Teste beta
  - Safari App Clip banner appears when a website is associated with an App Clip. Tapping brings up the App Clip Card . Tapping the card opens the app itself.
  - App Clips can be invoked from Safari, Messages, Maps, NFC Tags, QR Code or Location
  - Invocation URL from the website is used what to show on the App Clip Card and is passed to it upon tap of the banner
  - App Clip is packaged with the app and delivered to ASC
  - In the new App Clip Invocation Section on ASC you can provide titles and along with invocation URLs used in the App Clip
  - Title-URL combinations are selectable in TestFlight and take you directly to the App Clip by passing the invocation URL (without showing the App Clip Card)
- App Clip Card Meta Data
  - Header image, App Clip title, App Clip subtitle, call to action button
  - Enter the default meta data on the apps version page on ASC
  - Associate your website with the App Clip by including the meta-data tag <meta name="apple-itunes-app", content:"app-id=123456", app-clip-bundle-id:=org.appname.clip>
  - Use Advanced App Clip Experiences to get customized meta data and association with eg location in Maps
    - Advanced assistant on your app's version page on ASC to setup advanced experience
    - You can select to promote Your own business or Other Businesses (eg Yelp)
  - You have to specify an Apple App Site Association file (like with universal links) that has to match the Associated Domains Entitlement in your app
  - Manage / Debug your website association on ASC
Game Center
- Challenges other players to get achievement
- Recurring Leaderboards to collect scores for a certain period of time
  - Reset after that time
  - Configurable on ASC
Family Sharing for Subscriptions
- Subscriptions can be shared among the family form fall 2020
- Auto-renewable subscriptions
- Non-consumables
- Automatic sharing for new customers
- Existing subscribers can opt-in
- Family-shared in-app purchase can be enabled on the ASC-In-App-Purchase section of your app
- Once turned on it cannot be tuned off again
App Store Connect API
- Over 200 new endpoints will be added
- Add App Meta Data API
  - Create new version
  - Set app pricing
  - Edit app and version metadata
  - Associate build with version
  - Submit app for review
- Add Power and Performance Metrics and Diagnostics API

Meet the new Photos picker

https://developer.apple.com/wwdc20/10652

Presenters: Tobias Conradi, Justin Jia

PHPicker
- Direct access to user's photo gallery
- Supports zoom in, multi-select, review
- Types are filterable
- Privacy built in by default
- It won't prompt the user for access
- It runs out of the app's process
  - Separate process rendered on top of the app
  - Only what user selects is passed back to the app
Implementação
- PHPickerConfiguration (which can include type filters) is passed to PHPickerViewController , which has delegates to handle responses
- PHPickerConfiguration
  - Selection limit
  - Image / Video type
- Initialize PHPickerViewController by using the configuration
- Set delegate and implement protocol functions
  - didFinishPicking
  - NSItemProvider - representation of the item, async, requires error handling
Demonstração
- Photo preview app
- UIImageView with placeholder image
- Plus button for image selection
  - Present the new picker
  - Create PHPickerConfiguration with images filter and selection limit (set to zero for unlimited selection)
  - Initialize the PHPickerViewController with this configuration
  - Present the new controller after setting delegate and following the protocol
  - Implement didFinishPicking
    - Dismiss the picker first
    - Retrieve the image via item provider and use main queue to update your UI
  - Use IndexingIterator<[NSItemProvider]> to save array of item providers
  - Add touch event to iterate through the array of picked images
Observação
- AssetsLibrary will go away; switch to PhotoKit
- UIImagePickerController is to be deprecated and replaced with PHPickerViewController

Detect Body and Hand Pose with Vision

https://developer.apple.com/wwdc20/10653

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Create Swift Playgrounds content for iPad and Mac

https://developer.apple.com/wwdc20/10654

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Discover how to download and play HLS offline

https://developer.apple.com/wwdc20/10655

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Beyond counting steps

https://developer.apple.com/wwdc20/10656

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Make apps smarter with Natural Language

https://developer.apple.com/wwdc20/10657

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in education

https://developer.apple.com/wwdc20/10658

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PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Introducing StoreKit Testing in Xcode

https://developer.apple.com/wwdc20/10659

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in location

https://developer.apple.com/wwdc20/10660

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new with in-app purchase

https://developer.apple.com/wwdc20/10661

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in Wallet and Apple Pay

https://developer.apple.com/wwdc20/10662

Presenter: Stacey Abrams

Use Apple Pay to get into public transit and acadamic buildings
API Enhancements
- PKSecureElementPass replaces PKPaymentPass fom now
- New Apple Pay Button types: .reload , .addMoney , .topUp , .order , .rent , .support , .contribute , .tip
- See how to declare a Apple Pay Button on a website at 2:16
- PKPaymentButton style .automatic automatically switches between light and dark mode
Apple Pay in App Clips
- Could revolutionize everydays payment experience when you can eg just tap an NFC tag on a gas station to pay your gas
- Guest checkouts using Apple Pay do not require to setup an account anymore and if it is necessary seamless Sign in with Apple is used.
Enhancing Apple Pay experience across platforms
- Merchants can receive redacted billing address
  - Lower risk of chargebacks for merchnts
  - Price transparency leads to higher conversion rates
- Apple Pay for Catalyst
  - Brings great payment experiences to more mac apps
  - Brings the newly announced APIs, including the Apple Pay button, to the mac
- Improvements in WKWebView will allow more pages to allow Apple Pay transactions now
Contacts Formatting Improvements to prevent invalid shipping addresses
- Street and city fields contain vaild characters only
- State is a two letter code
- US: Zip code is 5 or 9 digit code
- ISO country code is upper case two letter code
- Improved experience when correcting information
  - Raise formatting errors earlier in the payment flow
  - Users can correct information prior to authentication
- Error APIs improved and aligned to new formatting options
- Only rolles out in some Australia, Canada, UK, US for now
Adding cards to Apple Pay
- Issuer Extensions to improve discoverability from within the Wallet app - needs installatioon of an Issuer app
- App requires non-UI extension
  - Extension principal object must subclass PKIssuerProvisioningExtensionHandler
  - Requires non-UI extension entitlement
- Added support for a UI extension
  - Needs to handle re-authentications if required by conforming principal object to PKIssuerProvisioningExtensionAuthorizationProviding
  - Requires UI extension entitlement

What's new for web developers

https://developer.apple.com/wwdc20/10663

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Getting started with HealthKit

https://developer.apple.com/wwdc20/10664

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Meet Safari Web Extensions

https://developer.apple.com/wwdc20/10665

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

One-tap account security upgrades

https://developer.apple.com/wwdc20/10666

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Custom app distribution with Apple Business Manager

https://developer.apple.com/wwdc20/10667

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Meet Nearby Interaction

https://developer.apple.com/wwdc20/10668

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Handling FHIR without getting burned

https://developer.apple.com/wwdc20/10669

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Meet Face ID and Touch ID for the web

https://developer.apple.com/wwdc20/10670

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Architecting for subscriptions

https://developer.apple.com/wwdc20/10671

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

What's new in ClassKit

https://developer.apple.com/wwdc20/10672

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore Computer Vision APIs

https://developer.apple.com/wwdc20/10673

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build trust through better privacy

https://developer.apple.com/wwdc20/10676

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Build customized ML models with the Metal Performance Shaders Graph

https://developer.apple.com/wwdc20/10677

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Refine Objective-C frameworks for Swift

https://developer.apple.com/wwdc20/10680

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Explore the new system architecture of Apple Silicon Macs

https://developer.apple.com/wwdc20/10686

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Triage test failures with XCTIssue

https://developer.apple.com/wwdc20/10687

Presenters: Example Guy, Another Person

PENDÊNCIA! You can contribute to this session, please see CONTRIBUTING.md

Expandir