This article shares the specific code for RxJava Retrofit implementation shopping cart display for your reference. The specific content is as follows
Show everyone the renderings first
Framework structure:
1. Project framework: MVP, image loading is done by Fresco, network requests are implemented using OKhttp+Retrofit (encapsulate it yourself, add singleton mode),
2. Complete the addition of shopping cart data (if there is no data on the interface, you can add data using the interface tool).
3. Customize the view to implement the addition and subtraction button. Each time you click Add and subtract, the total number and total price in the item must be changed accordingly.
4. When the quantity is 1, click the minus sign, the quantity remains unchanged, and the toast prompts the user that the minimum number is 1.
5. The total number and total price at the bottom are the total price and total number in all item items. If the quantity price in each item is changed, the total number of the total price at the bottom must be linked to it.
6. Implement the function of single-choice reverse-select all, enter the default selection for the first time, the total number and total price are not included in the bottom data when the item is not selected. When the selected state is changed, the total number and total price of the bottom can be modified correctly.
7. Click the delete button to delete the item. The total number and total price at the bottom can be modified correctly, and the interface data will be deleted.
Add required dependencies and networking permissions
compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'//Retrofit2 required package compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'//ConverterFactory's Gson dependency package compile 'com.squareup.retrofit2:converter-scalars:2.0.0-beta4'//ConverterFactory's String dependency package compile 'io.reactivex.rxjava2:rxjava:2.1.3'compile 'io.reactivex.rxjava2:rxandroid:2.0.1'compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'compile 'de.greenrobot:eventbus:3.0.0-beta1'compile 'com.facebook.fresco:fresco:0.11.0'
<uses-permission android:name="android.permission.INTERNET" />
Subcontract before using MVP mode
net package
API
public class API { public static String HOST="http://120.27.23.105/product/";}ServiceAPI
public interface ServiceAPI { @GET("getProductDetail") Flowable<XQBean> getXQ(@Query("pid")int pid, @Query("source")String str); @GET("addCart") Flowable<AddCart> getMsg(@Query("uid")int uid, @Query("pid")int pid, @Query("source")String str); @GET("getCarts") Flowable<CartBean> getCart(@Query("uid")int uid, @Query("source")String str);}Successful interface
public interface OnNetLisenter<T> { void Success(T t);}Retrofit packaging
public class RetrofitHepler { public static OkHttpClient okHttpClient; public static ServiceAPI serViceAPI; /** * Priority execution*/ static { getOkHttpClient(); } public static OkHttpClient getOkHttpClient(){ if(okHttpClient==null){ synchronized (OkHttpClient.class){ if(okHttpClient==null){ okHttpClient=new OkHttpClient(); } } return okHttpClient; } public static ServiceAPI getSerViceAPI(){ if(serViceAPI==null){ synchronized (OkHttpClient.class){ if(serViceAPI==null){ serViceAPI=onCreate(ServiceAPI.class,API.HOST); } } } return serViceAPI; } public static <T> T onCreate(Class<T>tClass,String url){ Retrofit retrofit = new Retrofit.Builder() .baseUrl(url) .addConverterFactory(GsonConverterFactory.create()) .client(okHttpClient) .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) //.addCallAdapterFactory(RxJava2CallAdapterFactory.create()) .build(); return return.create(tClass); }} bean package
Bean class for details page
public class XQBean { /** * msg : * seller : {"description":"I am a merchant 2","icon":"http://120.27.23.105/images/icon.png","name":"merchant 2","productNums":999,"score":5,"sellerid":2} * code : 0 * data : {"bargainPrice":111.99,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_ 335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7 504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","itemtype":2 ,"pid":9,"price":78.99,"pscid":1,"salenum":2356,"sellerid":2,"subhead":"Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a piece of cake to make your life more complete, JD Mooncake makes love more complete, JD Self-operated, Lightning delivery, more surprises, poke with your fingers","title":"Beijing Daoxiangcun Daoxiangcun Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g"} */ private String msg; private SellerBean seller; private String code; private DataBean data; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public SellerBean getSeller() { return seller; } public void setSeller(SellerBean seller) { this.seller = seller; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } public DataBean getData() { return data; } public void setData(DataBean data) { this.data = data; } public static class SellerBean { /** * description : I am a merchant 2 * icon : http://120.27.23.105/images/icon.png * name : Merchant 2 * productNums : 999 * score : 5.0 * sellerid : 2 */ private String description; private String icon; private String name; private int productNums; private double score; private int sellerid; public String getDescription() { return description; } public void setDescription(String description) { this.description = description; } public String getIcon() { return icon; } public void setIcon(String icon) { this.icon = icon; } public String getName() { return name; } public void setName(String name) { this.name = name; } public int getProductNums() { return productNums; } public void setProductNums(int productNums) { this.productNums = productNums; } public double getScore() { return score; } public void setScore(double score) { this.score = score; } public int getSellerid() { return sellerid; } public void setSellerid(int sellerid) { this.sellerid = sellerid; } } public static class DataBean { /** * bargainPrice : 111.99 * createtime : 2017-10-14T21:48:08 * detailUrl : https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends * images: https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721 388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg * itemtype : 2 * pid : 9 * price : 78.99 * pscid : 1 * sales : 2356 * sellerid : 2 * subhead : Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a piece of cake to make your life more complete. JD Mooncakes make love more complete JD Self-operated, Lightning delivery, more surprises, please click with your finger * title : Beijing Daoxiangcun Daoxiangcun Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g */ private double bargainPrice; private String createtime; private String detailUrl; private String images; private int itemtype; private int pid; private double price; private int pscid; private int salesenum; private int sellerid; private String subhead; private String title; public double getBargainPrice() { return bargainPrice; } public void setBargainPrice(double bargainPrice) { this.bargainPrice = bargainPrice; } public String getCreatetime() { return createtime; } public void setCreatetime(String createtime) { this.createtime = createtime; } public String getDetailUrl() { return detailUrl; } public void setDetailUrl(String detailUrl) { this.detailUrl = detailUrl; } public String getImages() { return images; } public void setImages(String images) { this.images = images; } public int getItemtype() { return itemtype; } public void setItemtype(int itemtype) { this.itemtype = itemtype; } public int getPid() { return pid; } public void setPid(int pid) { this.pid = pid; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public int getPscid() { return pscid; } public void setPscid(int pscid) { this.pscid = pscid; } public int getSalenum() { return salesenum; } public void setSalenum(int salesenum) { this.salenum = salesenum; } public int getSellerid() { return sellerid; } public void setSellerid(int sellerid) { this.sellerid = sellerid; } public String getSubhead() { return subhead; } public void setSubhead(String subhead) { this.subhead = subhead; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } }}Bean added to the cart
public class AddCart { private String msg; private String code; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getCode() { return code; } public void setCode(String code) { this.code = code; }}Product category
public class CartBean { /** * msg : Request successful* code : 0 * data : [{"list":[{"bargainPrice":22.9,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/ 56f0a08fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg|https://m.360buy img.com/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531a a913/57709035N33857877.jpg!q70.jpg","num":1,"pid":24,"price":288,"pscid":2,"selected":0,"sellerid":1,"subhead":"Three Squirrels snack special offer, 50 off for the area over 99, 100 off for the area over 199, hurry up and buy it 》","title":"Three Squirrel Nuts Roasted Snacks Creamy Pecan 225g/bag"},{"bargainPrice":11800,"createtime":"2017-10-10T17:33:37","detailUrl":"https://item.m.jd.com/product/4338107 .html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6700/155/2098998076/156185/6cf95035/595dd5a5Nc3a7dab5.jpg!q70.jpg","num":2,"pid":57,"price":5199,"pscid":40,"selected":0,"sellerid":1,"subhead":"【i5 MX150 2G video memory] Full HD narrow bezel 8G memory 256 SSD supports fingerprint recognition Pre-installed WIN10 system", "title":"Xiaomi (MI) Air 13.3-inch full metal thin notebook (i5-7200U 8G 256G PCle SSD MX150 2G independent graphics FHD Fingerprint recognition Win10) silver/r/n"},{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=app share&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https: //m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12 N5b900606.jpg!q70.jpg","num":1,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"HD dual camera, it is clear! 2000+16 million high-definition camera, 6GB large memory + Qualcomm Snapdragon 835 processor, performance monster! ","title":"OnePlus Mobile 5 (A5000) 6GB+64GB Yueyanhui full network connection dual-sec dual standby mobile China Unicom Telecom 4G mobile phone"}],"sellerName":"merchant 1","sellerid":"1"},{"list":[{"bargainPrice":6666,"createtime":"2017-10-10T16:01:31","detailUrl":"https://item.m.jd.com/product/5089273 .html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t8284/363/1326459580/71585/6d3e8013/ 59b857f2N6ca75622.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t9346/182/1406837243/282106/68af5b54/59b8480aNe8af7f5c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8434/54/1359766 007/56140/579509d9/59b85801Nfea207db.jpg!q70.jpg","num":1,"pid":46,"price":234,"pscid":39,"selected":0,"sellerid":2,"subhead":"【New iPhone launch】The new generation of iPhone makes the smart look more different","title":"Apple iPhone 8 Plus (A1864) 64GB Golden Mobile Unicom Telecom 4G Mobile"}],"sellerName":"Merchant 2","sellerid":"2"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-03T23:43:53","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp& utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/ n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":5,"pid":12,"price":256, "pscid":1,"selected":0,"sellerid":5,"subhead":"Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a cake to make your life more complete. JD Mooncakes make love more complete. JD Self-operated, Lightning delivery, more surprises, please click with your fingers","title":"Beijing Daoxiangcun Daoxiangcun Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g"}],"sellerName":"Merchant 5","sellerid":"5"},{"list":[{"bar gainPrice":11800,"createtime":"2017-10-03T23:53:28","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/ n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0 /jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/j fs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":1,"pid":62,"price":15999,"pscid":40,"selected":0,"sellerid":6,"subhead":"Purchase some computer office products for 1 yuan and return to train tickets for 5 yuan (once the return is over)","title":"Global purchase of new Apple models MacBook Pro Apple laptop silver VP2 new 13-inch Bar i5/8G/256G"}],"sellerName":"Merchant 6","sellerid":"6"},{"list":[{"bargainPrice":399,"createtime":"2017-10-03T23:53:28","detailUrl":"https://item.m.jd.com/product/1439822107.html? utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t5887/201/859509257/69994/6bde9bf6/59224c24N e854e14c.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5641/233/853609022/57374/5c73d281/59224c24N3324d5f4.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5641/233/853609022/5737 4/5c73d281/59224c24N3324d5f4.jpg!q70.jpg","num":1,"pid":86,"price":777,"pscid":85,"selected":0,"sellerid":7,"subhead":"2 pieces, total price is 65% off","title":"Gap men's casual, comfortable, simple wash five bags of straight trousers tight jeans 941825 Dark gray 33/32(175/84A)"}],"sellerName":"Merchant 7","sellerid":"7"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.36 0buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286/f 5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":12,"p id":1,"price":118,"pscid":1,"selected":0,"sellerid":17,"subhead":"Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a cake to make your life more complete. JD Mooncakes make love more complete JD Self-operated, lightning delivery, more surprises, please click with your fingers","title":"Beijing Daoxiangcun Daoxiangcun Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g"}],"sellerName":"Merchant 17","sellerid":"17"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https ://item.m.jd.com/product/4719303.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m .360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7504/338/63721388/491286 /f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":4, "pid":2,"price":299,"pscid":1,"selected":0,"sellerid":18,"subhead":"Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a piece of cake to make your life more complete, JD mooncakes make love more complete, JD self-operated, lightning delivery, more surprises, please poke it with your finger","title":"Beijing Daoxiang Village Daoxiang Village Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g"}],"sellerName":"merchant 18","sellerid":"18"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-03T23:53:28","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1 370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jp g!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/ 178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357. jpg!q70.jpg","num":1,"pid":76,"price":37999.99,"pscid":40,"selected":0,"sellerid":20,"subhead":"Purchase some computer office products for 1 yuan and get a 5 yuan coupon for train tickets (once the return is over)","title":"Global purchase of new Apple MacBook Pro Apple laptop silver VP2 new 13-inch Bar i5/8G/256G"}],"sellerName":"Merchant 20","sellerid":"20"},{"list":[{"bargainPrice":111.99,"createtime":"2017-10-14T21:39:05","detailUrl":"https://item.m.jd.com/product/4719303.html?utm_source=androidap p&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t9004/210/1160833155/647627/ad6be059/59b4f4e1N9a2b1532.jpg!q70.jpg|https://m.360buyimg .com/n0/jfs/t7504/338/63721388/491286/f5957f53/598e95f1N7f2adb87.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7441/10/64242474/419246/adb30a7d/598e95fbNd989ba0a.jpg!q70.jpg","num":1,"pid":5,"pric e":88.99,"pscid":1,"selected":0,"sellerid":21,"subhead":"Every Mid-Autumn Festival cannot be simple. No matter where you are, you always need a cake to make your life more complete. JD Mooncakes make love more complete JD Self-operated, Lightning delivery, more surprises, please click with your fingers","title":"Beijing Daoxiangcun Daoxiangcun Mid-Autumn Festival Mooncake Old Beijing Mooncake Gift Box 655g"}],"sellerName":"Merchant 21","sellerid":"21"}]] */ private String msg; private String code; private List<DataBean> data; public String getMsg() { return msg; } public void setMsg(String msg) { this.msg = msg; } public String getCode() { return code; } public void setCode(String code) { this.code = code; } public List<DataBean> getData() { return data; } public void setData(List<DataBean> data) { this.data = data; } public static class DataBean { /** * list : [{"bargainPrice":22.9,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/56f0a08 fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg|https://m.360buyimg.c om/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531aa913 /57709035N33857877.jpg!q70.jpg","num":1,"pid":24,"price":288,"pscid":2,"selected":0,"sellerid":1,"subhead":"Three Squirrels snack special offer, 50 off for the area over 99, 100 off for the purchase over 199, hurry up and buy it》", "title":"Three Squirrel Nuts Roasted Snacks Creamy Pecan 225g/bag"},{"bargainPrice":11800,"createtime":"2017-10-10T17:33:37","detailUrl":"https://item.m.jd.com/product/4338107.h tml?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6700/155/2098998076/156185/6cf95035/595dd5a5Nc3a7dab5.jpg!q70.jpg","num":2,"pid":57,"price":5199,"pscid":40,"selected":0,"sellerid":1,"subhead":"【i5 MX150 2G video memory] Full HD narrow bezel 8G memory 256 SSD supports fingerprint recognition Pre-installed WIN10 system", "title":"Xiaomi (MI) Air 13.3-inch full metal thin notebook (i5-7200U 8G 256G PCle SSD MX150 2G independent graphics FHD Fingerprint recognition Win10) silver/r/n"},{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=app share&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https: //m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12 N5b900606.jpg!q70.jpg","num":1,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"HD dual camera, it is clear! 2000+16 million high-definition camera, 6GB large memory + Qualcomm Snapdragon 835 processor, performance monster! ","title":"OnePlus Mobile 5 (A5000) 6GB+64GB Yueyanhui Full Network Connect Dual SIM dual standby Mobile China Unicom Telecom 4G Mobile"}] * sellerName : Merchant 1 * sellerid : 1 */ private String sellerName; private String sellerid; private List<ListBean> list; private boolean check; public boolean isCheck() { return check; } public void setCheck(boolean check) { this.check = check; } public String getSellerName() { return sellerName; } public void setSellerName(String sellerName) { this.sellerName = sellerName; } public String getSellerid() { return sellerid; } public void setSellerid(String sellerid) { this.sellerid = sellerid; } public List<ListBean> getList() { return list; } public void setList(List<ListBean> list) { this.list = list; } public static class ListBean { /** * bargainPrice : 22.9 * createtime : 2017-10-14T21:48:08 * detailUrl : https://item.m.jd.com/product/2542855.html?utm_source=androidapp&utm_medium=appshare&utm_campaign=t_335139774&utm_term=QQfriends * images: https://m.360buyimg.com/n0/jfs/t1930/284/2865629620/390243/e3ade9c4/56f0a08fNbd3a1235.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2137/336/2802996626/155915/e5e90d7a/56f0a09cN33e01bd0.jpg!q70.jpg |https://m.360buyimg.com/n0/jfs/t1882/31/2772215910/389956/c8dbf370/56f0a0a2Na0c86ea6.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t2620/166/2703833710/312660/531aa913/57709035N33857877.jpg!q70.jpg * num : 1 * pid : 24 * price : 288.0 * pscid : 2 * selected : 0 * sellerid : 1 * subhead : Three Squirrel Snacks Special Offer, 50 off for purchases over 99 in the area, 100 off for purchases over 199 in the area, hurry up and buy》 * title : Three Squirrel Nuts Snacks Creamy Flavored Pygium 225g/bag*/ private double bargainPrice; private String createtime; private String detailUrl; private String images; private int num; private int pid; private double price; private int pscid; private int selected; private int sellerid; private String subhead; private String title; private int cou=1; public int getCou() { return cou; } public void setCou(int cou) { this.cou = cou; } private boolean check; public boolean isCheck() { return check; } public void setCheck(boolean check) { this.check = check; } public double getBargainPrice() { return bargainPrice; } public void setBargainPrice(double bargainPrice) { this.bargainPrice = bargainPrice; } public String getCreatetime() { return createtime; } public void setCreatetime(String createtime) { this.createtime = createtime; } public String getDetailUrl() { return detailUrl; } public void setDetailUrl(String detailUrl) { this.detailUrl = detailUrl; } public String getImages() { return images; } public void setImages(String images) { this.images = images; } public int getNum() { return num; } public void setNum(int num) { this.num = num; } public int getPid() { return pid; } public void setPid(int pid) { this.pid = pid; } public double getPrice() { return price; } public void setPrice(double price) { this.price = price; } public int getPscid() { return pscid; } public void setPscid(int pscid) { this.pscid = pscid; } public int getSelected() { return selected; } public void setSelected(int selected) { this.selected = selected; } public int getSellerid() { return sellerid; } public void setSellerid(int sellerid) { this.sellerid = sellerid; } public String getSubhead() { return subhead; } public void setSubhead(String subhead) { this.subhead = subhead; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } } }} app
public class MyApp extends Application{ @Override public void onCreate() { super.onCreate(); Fresco.initialize(this); }} View layer
Write two interfaces first
public interface ICart { void showlist(List<CartBean.DataBean> grouplist, List<List<CartBean.DataBean.ListBean>> childlist);} public interface IView<T> { void showBean(T t); void showStr(String s);}Main page layout
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.bwie.zhangzhen20170108.MainActivity"> <ExpandableListView android:id="@+id/elv" android:layout_weight="1" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <LinearLayout android:layout_weight="9" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent"> <CheckBox android:id="@+id/quanxuan" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:text="select all" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <LinearLayout android:layout_marginLeft="50dp" android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/zongjia" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="total price: 0.0" /> <TextView android:text="total 0 items" android:id="@+id/tv_count" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout> <TextView android:text="total checkout" android:background="#FFD82020" android:layout_marginLeft="100dp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> </LinearLayout></LinearLayout>
Main page
public class MainActivity extends AppCompatActivity implements ICart { private ExpandableListView mElv; private CheckBox mQuanxuan; private TextView mZongjia; private TextView mTvCount; private MyExpandableAdapter myExpandableAdapter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); new CartPresenter(this).getCart(); EventBus.getDefault().register(this); mQuanxuan.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { myExpandableAdapter.qx(mQuanxuan.isChecked()); } }); } private void initView() { mElv = (ExpandableListView) findViewById(R.id.elv); mQuanxuan = (CheckBox) findViewById(R.id.quanxuan); mZongjia = (TextView) findViewById(R.id.zongjia); mTvCount = (TextView) findViewById(R.id.tv_count); } @Override public void showlist(List<CartBean.DataBean> grouplist, List<List<CartBean.DataBean.ListBean>> childlist) { myExpandableAdapter = new MyExpandableAdapter(grouplist, this,childlist); mElv.setAdapter(myExpandableAdapter); for (int i = 0; i <grouplist.size() ; i++) { mElv.expandGroup(i); } } //Receive the value transmitted @Subscribe public void onPriceAndCount(CountAndPrice cp){ mZongjia.setText("Total"+cp.getCount()+"item"); mTvCount.setText("Total:"+cp.getPrice()); } //Receive the value transmitted @Subscribe public void onPriceAndCount1(MessgeEvent event){ //Change the selected state mQuanxuan.setChecked(event.isCheck()); } @Override protected void onDestroy() { super.onDestroy(); EventBus.getDefault().unregister(this); }}The second page layout
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:id="@+id/activity_add" tools:context="com.bwie.zhangzhen20170108.AddActivity"> <com.facebook.drawee.view.SimpleDraweeView android:layout_width="300dp" android:id="@+id/xqsdv1" android:layout_gravity="center" android:layout_height="300dp" /> <TextView android:id="@+id/tvtitle1" android:layout_width="match_parent" android:layout_height="wrap_content" /> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <Button android:id="@+id/tiaozhuan1" android:layout_weight="1" android:text="jump to cart" android:layout_width="match_parent" android:layout_height="wrap_content" /> <Button android:id="@+id/tianjia1" android:layout_weight="1" android:text="Add to cart" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout></LinearLayout>
Implementing the shopping cart code
public class AddActivity extends AppCompatActivity implements View.OnClickListener,IView { private SimpleDraweeView mXqsdv; private TextView mTvtitle; private Button mTiaozhuan; private Button mTianjia; private LinearLayout mAddActivity; private XQPresenter xqPresenter; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_add); initView(); xqPresenter=new XQPresenter(this); xqPresenter.getXQ(); } private void initView() { mXqsdv = (SimpleDraweeView) findViewById(R.id.xqsdv1); mTvtitle = (TextView) findViewById(R.id.tvtitle1); mTiaozhuan = (Button) findViewById(R.id.tiaozhuan1); mTiaozhuan.setOnClickListener(this); mTianjia = (Button) findViewById(R.id.tianjia1); mTianjia.setOnClickListener(this); mAddActivity = (LinearLayout) findViewById(R.id.activity_add); } @Override public void onClick(View v) { switch (v.getId()) { default: break; //Skip to MainActivity (Shopping Cart) case R.id.tiaozhuan1: startActivity(new Intent(this,MainActivity.class)); break; case R.id.tianjia1: xqPresenter.getAdd(); break; } } @Override public void showBean(Object o) { XQBean xqBean = (XQBean) o; XQBean.DataBean data = xqBean.getData(); String s = data.getImages().split("//|")[0]; Uri uri =Uri.parse(s);//Address converted to URI mXqsdv.setImageURI(uri); mTvtitle.setText(data.getTitle()+"/n"+data.getPrice()); } @Override public void showStr(String s) { Toast.makeText(this, s, Toast.LENGTH_SHORT).show(); }} eventbus package
Set a class of quantity and price
public class CountAndPrice { private int count ; private int price; public int getCount() { return count; } public void setCount(int count) { this.count = count; } public int getPrice() { return price; } public void setPrice(int price) { this.price = price; }}EventBus
public class MessgeEvent { private boolean check; public boolean isCheck() { return check; } public void setCheck(boolean check) { this.check = check; }} model
Implement the interface of the model layer of the details page
public interface IXQModel { public void getXQ(int pid, String str, final OnNetLisenter<XQBean> cgsb);}Implement the details page model
public class XQModel implements IXQModel{ @Override public void getXQ(int pid, String str, final OnNetLisenter<XQBean> onNetLisenter) { Flowable<XQBean> flowable = RetrofitHepler.getSerViceAPI().getXQ(pid, str); flowable.observeOn(AndroidSchedulers.mainThread()) .subscribeOn(Schedulers.io()) .subscribe(new Consumer<XQBean>() { @Override public void accept(XQBean xqBean) throws Exception { onNetLisenter.Success(xqBean); } }); } public void getAdd(int uid, int pid, String str, final OnNetLisenter<AddCart> onNetLisenter){ Flowable<AddCart> flowable = RetrofitHepler.getSerViceAPI().getMsg(uid, pid, str); flowable.observeOn(AndroidSchedulers.mainThread()) .subscribeOn(Schedulers.io()) .subscribe(new Consumer<AddCart>() { @Override public void accept(AddCart addCart) throws Exception { onNetLisenter.Success(addCart); } }); }}购物车的model
public class CartModel { public void getCart(int uid, String str, final OnNetLisenter<CartBean> onNetLisenter){ Flowable<CartBean> flowable = RetrofitHepler.getSerViceAPI().getCart(uid,str); flowable.observeOn(AndroidSchedulers.mainThread()) .subscribeOn(Schedulers.io()) .subscribe(new Consumer<CartBean>() { @Override public void accept(CartBean cartBean) throws Exception { onNetLisenter.Success(cartBean); } }); }} presenter层
详情页的P层
public class XQPresenter { private final XQModel xqModel; private IView iView; public XQPresenter(IView iView) { xqModel = new XQModel(); this.iView=iView; } public void getXQ(){ xqModel.getXQ(12, "android", new OnNetLisenter<XQBean>() { @Override public void Success(XQBean xqBean) { iView.showBean(xqBean); } }); } public void getAdd(){ xqModel.getAdd(3043, 12, "android", new OnNetLisenter<AddCart>() { @Override public void Success(AddCart addCart) { iView.showStr(addCart.getMsg()); } }); }}购物车的P层
public class CartPresenter { private ICart iCart; private final CartModel cartModel; public CartPresenter(ICart iCart) { this.iCart = iCart; cartModel = new CartModel(); } public void getCart(){ cartModel.getCart(3043,"android",new OnNetLisenter<CartBean>(){ @Override public void Success(CartBean cartBean) { List<CartBean.DataBean> grouplist = cartBean.getData(); List<List<CartBean.DataBean.ListBean>> childlist = new ArrayList<>(); for (int i = 0; i < grouplist.size(); i++) { CartBean.DataBean dataBean = grouplist.get(i); List<CartBean.DataBean.ListBean> list = dataBean.getList(); childlist.add(list); } iCart.showlist(grouplist,childlist); } }); }}adapter
public class MyExpandableAdapter extends BaseExpandableListAdapter { private List<CartBean.DataBean> groupdata; private Context context; private List<List<CartBean.DataBean.ListBean>> childlist; public MyExpandableAdapter( List<CartBean.DataBean> groupdata, Context context, List<List<CartBean.DataBean.ListBean>> childlist) { this.groupdata = groupdata; this.context = context; this.childlist = childlist; } @Override public int getGroupCount() { return groupdata.size(); } @Override public int getChildrenCount(int groupPosition) { return childlist.get(groupPosition).size(); } @Override public Object getGroup(int groupPosition) { return groupdata.get(groupPosition); } @Override public Object getChild(int groupPosition, int childPosition) { return null; } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public boolean hasStableIds() { return false; } @Override public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { final GroupViewHolder holder; if (convertView == null) { convertView = View.inflate(context, R.layout.group_item, null); holder = new GroupViewHolder(); holder.tv_group = (TextView) convertView.findViewById(R.id.tv_group); holder.group_cb = (CheckBox) convertView.findViewById(R.id.gx_group); convertView.setTag(holder); } else { holder = (GroupViewHolder) convertView.getTag(); } final CartBean.DataBean dataBean = groupdata.get(groupPosition); String sellerName = dataBean.getSellerName(); holder.group_cb.setChecked(dataBean.isCheck()); //点击一级checkbox的状态holder.group_cb.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { dataBean.setCheck(holder.group_cb.isChecked()); //改变所有孩子的状态changeChildState(groupPosition,holder.group_cb.isChecked()); EventBus.getDefault().post(jS()); //通过判断一级的checkbox判断全选的状态changeMianQXstatus(checkGroupAll()); notifyDataSetChanged(); } }); return convertView; } @Override public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { final ChildViewHolder holder; if (convertView == null) { convertView = View.inflate(context, R.layout.child_item, null); holder = new ChildViewHolder(); holder.tv_title= (TextView) convertView.findViewById(R.id.title); holder.price= (TextView) convertView.findViewById(R.id.price); holder.child_cb= (CheckBox) convertView.findViewById(R.id.gouxuan_child); holder.add= (TextView) convertView.findViewById(R.id.jia); holder.del= (TextView) convertView.findViewById(R.id.del); holder.jian= (TextView) convertView.findViewById(R.id.jian); holder.sdv= (SimpleDraweeView) convertView.findViewById(R.id.title_img); holder.tv_num= (TextView) convertView.findViewById(R.id.tv_num); holder.yanse= (TextView) convertView.findViewById(R.id.yanse); convertView.setTag(holder); } else { holder = (ChildViewHolder) convertView.getTag(); } final CartBean.DataBean.ListBean listBean = childlist.get(groupPosition).get(childPosition); int price = (int) listBean.getPrice(); holder.child_cb.setChecked(listBean.isCheck()); holder.price.setText("¥："+price+""); String title = listBean.getTitle(); holder.tv_title.setText(title); String subhead = listBean.getSubhead(); String substring = subhead.substring(1, 10)+"....."; holder.yanse.setText(substring); String images = listBean.getImages(); String[] split = images.split("//|"); String s = split[0]; Uri uri=Uri.parse(s); holder.sdv.setImageURI(uri); // listBean.setCou(Integer.parseInt(holder.tv_num.getText().toString())); //给子条目的checkBox点击事件holder.child_cb.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { listBean.setCheck(holder.child_cb.isChecked()); EventBus.getDefault().post(jS()); //如果二级的checkBox选中，就让一级的checkBox勾选if(holder.child_cb.isChecked()) { if (ischeckAllchild(groupPosition)) { //改变一级checkBox的状态changeGroupstatus(groupPosition,true); //通过判断一级的CheckBox的状态来改变全选的状态changeMianQXstatus(checkGroupAll()); } }else{ changeGroupstatus(groupPosition,false); changeMianQXstatus(checkGroupAll()); } notifyDataSetChanged(); } }); //点击加加的功能holder.add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { int cou = listBean.getCou(); holder.tv_num.setText(++cou+""); listBean.setCou(cou); if(holder.child_cb.isChecked()){ EventBus.getDefault().post(jS()); } } }); //点击减减的功能holder.jian.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { int cou = listBean.getCou(); if(cou==1) { Toast.makeText(context, "最小数量为1", Toast.LENGTH_SHORT).show(); return;} holder.tv_num.setText(--cou+""); listBean.setCou(cou); if (holder.child_cb.isChecked()) { EventBus.getDefault().post(jS()); } } }); //点击删除holder.del.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { List<CartBean.DataBean.ListBean> listBeen = childlist.get(groupPosition); CartBean.DataBean.ListBean remove = listBeen.remove(childPosition); if(listBeen.size()==0){ childlist.remove(childPosition); groupdata.remove(groupPosition); } EventBus.getDefault().post(jS()); notifyDataSetChanged(); } }); return convertView; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } class GroupViewHolder { CheckBox group_cb; TextView tv_group; } class ChildViewHolder { CheckBox child_cb; TextView tv_title,price,yanse,tv_num; TextView del,add,jian; SimpleDraweeView sdv; } /** * 判断全部的二级是CheckBox否选中* */ private boolean ischeckAllchild(int g){ List<CartBean.DataBean.ListBean> listBeen = childlist.get(g); for (int i = 0; i <listBeen.size() ; i++) { CartBean.DataBean.ListBean listBean = listBeen.get(i); if(!listBean.isCheck()){ return false; } } return true; } /** * 计算数量和价格* 通过遍历一级的得到二级的CheckBox，如果是选择的选中状态的话，就统计它们的总计的数量和价格*/ private CountAndPrice jS(){ int cou=0; int jiage=0; for (int i = 0; i <groupdata.size() ; i++) { for (int j = 0; j <childlist.get(i).size() ; j++) { CartBean.DataBean.ListBean listBean = childlist.get(i).get(j); if(listBean.isCheck()){ cou+=listBean.getCou(); jiage+=(int)listBean.getPrice()*listBean.getCou(); } } } CountAndPrice countAndPrice = new CountAndPrice(); countAndPrice.setCount(cou); countAndPrice.setPrice(jiage); return countAndPrice; } /** * 改变一级列表的状态*/ private void changeGroupstatus(int groupPosition,boolean flag ){ CartBean.DataBean dataBean = groupdata.get(groupPosition); dataBean.setCheck(flag); } /** * 改变全选的状态* */ private void changeMianQXstatus(boolean flag){ MessgeEvent messgeEvent = new MessgeEvent(); messgeEvent.setCheck(flag); EventBus.getDefault().post(messgeEvent); } /** * 判断一级的是否全部选中*/ private boolean checkGroupAll(){ for (int i = 0; i < groupdata.size(); i++) { if(!groupdata.get(i).isCheck()){ return false; } } return true; } /** * 改变所有孩子的状态*/ private void changeChildState(int grouPistion,boolean flag){ List<CartBean.DataBean.ListBean> listBeen = childlist.get(grouPistion); for (int i = 0; i < listBeen.size(); i++) { listBeen.get(i).setCheck(flag); } } /** * 改变全选的*/ public void qx(boolean flag){ for (int i = 0; i < groupdata.size(); i++) { changeGroupstatus(i, flag); changeChildState(i, flag); } EventBus.getDefault().post(jS()); notifyDataSetChanged(); }}group_item.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <CheckBox android:id="@+id/gx_group" android:focusable="false" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/tv_group" android:layout_width="wrap_content" android:layout_height="wrap_content" /></LinearLayout>
child_item.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <TextView android:id="@+id/title" android:layout_marginLeft="20dp" android:layout_width="match_parent" android:layout_height="wrap_content" /> <LinearLayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content"> <CheckBox android:layout_marginLeft="20dp" android:gravity="center_vertical" android:id="@+id/gouxuan_child" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <com.facebook.drawee.view.SimpleDraweeView android:gravity="center_vertical" android:id="@+id/title_img" android:layout_width="50dp" android:layout_height="50dp" /> <LinearLayout android:orientation="vertical" android:layout_marginLeft="30dp" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/price" android:layout_marginLeft="10dp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <TextView android:id="@+id/yanse" android:layout_marginLeft="10dp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <LinearLayout android:layout_marginLeft="100dp" android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="wrap_content"> <TextView android:id="@+id/jian" android:layout_width="20dp" android:layout_height="20dp" android:textSize="15sp" android:text="一"/> <TextView android:id="@+id/tv_num" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="5dp" android:paddingBottom="2dp" android:paddingLeft="20dp" android:paddingRight="20dp" android:paddingTop="2dp" android:text="1" /> <TextView android:id="@+id/jia" android:layout_width="20dp" android:layout_height="20dp" android:layout_marginLeft="5dp" android:text="＋" android:textSize="15sp"/> </LinearLayout> </LinearLayout> <TextView android:id="@+id/del" android:layout_marginLeft="20dp" android:text="删除" android:textColor="#FFFFFF" android:background="#ff3660" android:layout_width="32dp" android:layout_height="29dp" /> </LinearLayout></LinearLayout>
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