The code is very simple, just add the code, please refer to it
The code copy is as follows:
package com.it.login.service;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;
import android.content.Context;
public class LoginService {
/**
* Save the file
* @param context context
* @param username
* @param password
* @return
*/
public static boolean saveUserInfo(Context context,String username,String password){
File file=new File(context.getFilesDir(),"user.bat"); // Create a file under the current package
try {
FileOutputStream fis = new FileOutputStream(file);
fis.write((username+"##"+password).getBytes());
fis.close();
return true;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
}
/**
* Echo the username and password
* @param context
* @return
*/
public static Map<String,String> getUserInfo(Context context){
File file=new File(context.getFilesDir(),"user.bat");
try {
Map<String,String> map=new HashMap<String, String>();
FileInputStream fis = new FileInputStream(file);
BufferedReader br=new BufferedReader(new InputStreamReader(fis));
String str=br.readLine();
String[] infos=str.split("##");
map.put("username", infos[0]);
map.put("password", infos[1]);
return map;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
return null;
}
}
}