如何在後臺運行服務並由SharedPreferences管理設置

我正在編寫一個應用程序，其中包含一個PrePreceActivity，其中包含一個SwitchPreference，用於在用戶打開或關閉它時啓動或停止服務，並保存切換到SharedPreference的狀態。然後在MainActivity中我註冊了一個SharedPreferenceChangeListener，它讀取交換機的狀態，然後根據它啓動或停止服務。如何在後臺運行服務並由SharedPreferences管理設置

// This is the code in MainATY: 
     preferences= getPreferences(Activity.MODE_PRIVATE); 
       editor= preferences.edit(); 

     preferences.registerOnSharedPreferenceChangeListener(new SharedPreferences.OnSharedPreferenceChangeListener() { 
      @Override 
      public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String s) { 
       boolean pushNotification= sharedPreferences.getBoolean(MyPreferences.pushNotificationKey,true); 
       if (pushNotification) 
       { 
        if (!NotificationService.isRunning){ 
         Intent i = new Intent(MainActivity.this, NotificationService.class); 
         bindService(i,MainActivity.this,Context.BIND_AUTO_CREATE); 
        } 
       } 
       else{ 
        if (NotificationService.isRunning){ 
         unbindService(MainActivity.this); 
        } 
       } 
      } 
     });

，這是PreferenceATY代碼：

pushNotification.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() { 
      @Override 
      public boolean onPreferenceChange(Preference preference, Object o) { 

       pushNotification= (SwitchPreference) preference; 
       editor.putBoolean(pushNotificationKey,pushNotification.isChecked()); 
       if (!editor.commit()) 
       { 
        Toast.makeText(MyPreferences.this, R.string.changes_saved,Toast.LENGTH_SHORT).show(); 
       } 
       return true; 
      } 
     });

但它不工作，你能幫幫我嗎？最後一件事，我如何使用多行內容做出通知？這是我的通知功能：

String thingsToDo=new String(); 
      while (c.moveToNext()) 
      { 
       thingsToDo+=String.format("%s: %s: %s " 
         ,c.getString(c.getColumnIndex("subject")) 
         ,c.getString(c.getColumnIndex("typeOfEvent")) 
         ,c.getString(c.getColumnIndex("what")) 
         ); 
       thingsToDo+="/n"; 
      } 
      thingsToDo.substring(0,4); 


      NotificationCompat.Builder mBuilder=new NotificationCompat.Builder(MainActivity.this) 
        .setSmallIcon(R.drawable.small_icon_diary) 
        .setContentTitle(getString(R.string.homework_for_tomorrow)) 
        .setContentText(thingsToDo); 
      mBuilder.setShowWhen(true); 

      Intent i= new Intent(MainActivity.this,NotificationViewActivity.class); 
      Bundle b= new Bundle(); 
      b.putString("time",time); 
      i.putExtra("b",b); 
      i.putExtra("time",time); 
      mBuilder.addAction(R.drawable.small_icon_diary,"Open",PendingIntent.getActivity(MainActivity.this,0,i,0));

來源

2017-01-12 X_Wen

我已經解決了關於這種方式通知的問題：

NotificationCompat.Builder mBuilder=new NotificationCompat.Builder(MainActivity.this) 
        .setSmallIcon(R.drawable.small_icon_diary) 
        .setContentTitle(getString(R.string.homework_for_tomorrow)) 
        .setContentText(thingsToDo) 
        .setStyle(new NotificationCompat.BigTextStyle().bigText(thingsTodo));

來源

2017-01-17 20:18:02

如何在後臺運行服務並由SharedPreferences管理設置

回答

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