如何獲取每個通知的有效載荷？

Question

我正在使用不同的msg id在我的應用程序中顯示通知，當我點擊notificaion時，如何獲取每個通知的有效載荷或味精以向用戶顯示相關信息。

multiple notificaion http://trip38.com/images/noti.png

一個很好的參考或解決方法會更有幫助:)我寫

代碼是

NotificationManager notifier = (NotificationManager) GCMIntentService.this. 
      getSystemService(Context.NOTIFICATION_SERVICE); 
    Notification notification = new Notification(drawable, msg_alert, System.currentTimeMillis()); 

    //Setup the Intent to open this Activity when clicked 
    Intent toLaunch = new Intent(GCMIntentService.this, MainActivity.class); 
    toLaunch.putExtra("msg", msg); 

    PendingIntent contentIntent = PendingIntent.getActivity(GCMIntentService.this, 0, toLaunch, 0); 

    //Set the Notification Info 
    notification.tickerText = ticker_msg; 
    notification.setLatestEventInfo(GCMIntentService.this, noti_title, noti_msg, contentIntent); 

    //Setting Notification Flags 
    notification.flags |= Notification.FLAG_AUTO_CANCEL; 
    notification.defaults |= Notification.DEFAULT_SOUND; 
    notification.defaults |= Notification.DEFAULT_VIBRATE; 

    notifier.notify(msg_id, notification); 

編輯代碼

public class GCMIntentService extends GCMBaseIntentService { 

private static final String TAG = "GCMIntentService"; 
private SharedPreferences mPreferences; 

public GCMIntentService() { 
    super(AppConstants.SENDER_ID); 
} 


@Override 
protected void onRegistered(Context context, String registrationId) { 
    mPreferences = context.getApplicationContext().getSharedPreferences(AppConstants.PREFS_FILE_NAME, 0); 

    SharedPreferences.Editor mEditor = mPreferences.edit(); 
    mEditor.putString(AppConstants.REGISTRATION_KEY_STR, registrationId); 
    mEditor.apply(); 

    //saved reg id in server 
} 

@Override 
protected void onUnregistered(Context arg0, String arg1) { 
    Logger.d(TAG, "unregistered = " + arg1); 
} 

@Override 
protected void onMessage(Context arg0, Intent arg1) { 
    Logger.d(TAG, "new message received: " + arg1.getStringExtra("message")); 
    showNotification(arg1.getStringExtra("message")); 
} 

@Override 
protected void onError(Context arg0, String errorId) { 
    Logger.d(TAG, "Received error: " + errorId); 
} 

@Override 
protected boolean onRecoverableError(Context context, String errorId) { 
    return super.onRecoverableError(context, errorId); 
} 

private void showNotification(String msg) { 
    String msg_alert = getResources().getString(R.string.app_name); //alert notification title 
    String noti_title = ""; //noti_title from msg 
    String noti_msg = ""; //noti_msg from msg 
    String ticker_msg = ""; //ticker_msg from msg 
    String msg_icon = ""; //msg_icon from msg 
    int msg_id; //msg_id from msg 

    //Get the icon for the notification 
    int drawable = R.drawable.ic_launcher; 
    if (!msg_icon.equals("")) 
     drawable = getResources().getIdentifier(msg_icon, "drawable", getPackageName()); 
    if (drawable == 0) { 
     drawable = R.drawable.ic_launcher; 
    } 
    NotificationManager notifier = (NotificationManager) GCMIntentService.this. 
      getSystemService(Context.NOTIFICATION_SERVICE); 
    Notification notification = new Notification(drawable, msg_alert, System.currentTimeMillis()); 

    //Setup the Intent to open this Activity when clicked 
    Intent toLaunch = new Intent(GCMIntentService.this, MainActivity.class); 
    toLaunch.putExtra("msg_type", msg_type); 
    toLaunch.putExtra("trip_id", trip_id); 
    toLaunch.putExtra("booking_id", booking_id); 
    toLaunch.putExtra("noty_ticket_id", ticketId); 
    toLaunch.putExtra("msg", msg); 

    PendingIntent contentIntent = PendingIntent.getActivity(GCMIntentService.this, 0, toLaunch, 0); 

    //Set the Notification Info 
    notification.tickerText = ticker_msg; 
    notification.setLatestEventInfo(GCMIntentService.this, noti_title, noti_msg, contentIntent); 

    //Setting Notification Flags 
    notification.flags |= Notification.FLAG_AUTO_CANCEL; 
    notification.defaults |= Notification.DEFAULT_SOUND; 

    notifier.notify(msg_id, notification); 
} 

}

Answer 1

你的問題是在這裏：

PendingIntent contentIntent = PendingIntent.getActivity(GCMIntentService.this, 0, 
             toLaunch, 0); 

如果要創建幾個PendingIntent小號需要同時活動，你需要確保它們是「獨特的」。最簡單的方法是在撥打PendingIntent.getActivity()時使用不同的（唯一的）requestCode參數。就像這樣：

PendingIntent contentIntent = PendingIntent.getActivity(GCMIntentService.this, msg_id, 
             toLaunch, 0); 

（假設msg_id是每個消息獨特。如果不是的話，你可以使用一些其他的唯一編號

Answer 2

這是您將如何接收活動MainActivity中的數據的方式。你會得到從通知到意圖的有效載荷。

String msgFromNotification = getIntent().getStringExtra("msg") 

編輯

可能是msg值是靜態的。看你的代碼。如果您希望收到的通知顯示的消息

變化

toLaunch.putExtra("msg", msg); 

到

toLaunch.putExtra("msg", noti_msg);