Android 在广播接收器中弹出对话框详解手机开发

 1 　　public class ForceOfflineReceiver extends BroadcastReceiver{ 
 2     @Override 
 3     public void onReceive(final Context context, Intent intent) { 
 4  
 5         AlertDialog.Builder dialogBuilder =  new AlertDialog.Builder(context); 
 6         dialogBuilder.setTitle("下线通知"); 
 7         dialogBuilder.setMessage("你的账户在其他地方登录 Over"); 
 8         dialogBuilder.setCancelable(false); 
 9         dialogBuilder.setPositiveButton("重新登录", 
10                 new DialogInterface.OnClickListener() { 
11                     @Override 
12                     public void onClick(DialogInterface dialog, int which) { 
13                         ActivityCollector.finishAll();//摧毁所有活动 
14                         Intent intent1 = new Intent(context, LoginActivity.class); 
15                         //在广播接受者中启动活动需要添加FLAG_ACTIVITY_NEW_TASK标志 
16                         intent1.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
17                         context.startActivity(intent1); 
18                     } 
19                 }); 
20         AlertDialog alertDialog = dialogBuilder.create(); 
21         alertDialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT); 
22         alertDialog.show(); 
23     } 
24 }