Klicken Sie auf " GCM notification nicht öffnen gewünschte Aktivität in Android Kitkat

Bin ich dabei eine app verlangt von mir senden push-Benachrichtigung auf meinem Benutzer.

Ich bin mit dieses Beispiel. Zuerst hatte ich Problem, ein Klick auf die Benachrichtigung über notification-bar, die war nicht zu öffnen gewünschte Wirkung haben, aber das ist Problem ist nun behoben. Ich erhalte die Benachrichtigung, wenn die app aktiv ist oder im hintergrund.

Aber mein Handy (Nexus 4 hat Android Kitkat 4.4) verhält sich unerwartet: es zeigt Benachrichtigung über broadcast, wenn app im Vordergrund und zeigt Nachricht, aber nicht die Aktion starten, die starten beim klicken auf die Benachrichtigung in der Benachrichtigungsleiste angezeigt.Manchmal ist es nicht die Meldungen, wo, wie meine anderen Handys funktioniert.

package com.androidhive.pushnotifications;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.util.Log;
import android.widget.Toast; 
import com.google.android.gcm.GCMBaseIntentService;

import static com.androidhive.pushnotifications.CommonUtilities.SENDER_ID;
import static com.androidhive.pushnotifications.CommonUtilities.displayMessage;
import android.database.sqlite.SQLiteDatabase;

public class GCMIntentService extends GCMBaseIntentService {
private static SQLiteDatabase sampleDB;
private static final String SAMPLE_DB_NAME = "pushData.db";
private static final String SAMPLE_TABLE_NAME = "pushtabledata";
private static final String TAG = "GCMIntentService";
public GCMIntentService() {
    super(SENDER_ID);

}

/**
 * Method called on device registered
 **/
@Override
protected void onRegistered(Context context, String registrationId) {
    Log.i(TAG, "Device registered: regId = " + registrationId);
    displayMessage(context, "Your device registred with GCM");
    Log.d("NAME", MainActivity.name);
    ServerUtilities.register(context, MainActivity.name, MainActivity.email, registrationId);
}

/**
 * Method called on device un registred
 * */
@Override
protected void onUnregistered(Context context, String registrationId) {
    Log.i(TAG, "Device unregistered");
    displayMessage(context, getString(R.string.gcm_unregistered));
    ServerUtilities.unregister(context, registrationId);
}

/**
 * Method called on Receiving a new message
 * */


@Override
protected void onMessage(Context context, Intent intent) {
    Log.i(TAG, "Received message");
    String message = intent.getExtras().getString("price");
     Log.d("GCMIntentService", "here");
     displayMessage(context, message);
    //notifies user
    generateNotification(context, message);
}

/**
 * Method called on receiving a deleted message
 * */
@Override
protected void onDeletedMessages(Context context, int total) {
    Log.i(TAG, "Received deleted messages notification");
    String message = getString(R.string.gcm_deleted, total);
    displayMessage(context, message);
    //notifies user
    generateNotification(context, message);
}

/**
 * Method called on Error
 * */
@Override
public void onError(Context context, String errorId) {
    Log.i(TAG, "Received error: " + errorId);
    displayMessage(context, getString(R.string.gcm_error, errorId));
}

@Override
protected boolean onRecoverableError(Context context, String errorId) {
    //log message
    Log.i(TAG, "Received recoverable error: " + errorId);
    displayMessage(context, getString(R.string.gcm_recoverable_error,
            errorId));
    return super.onRecoverableError(context, errorId);
}

/**
 * Issues a notification to inform the user that server has sent a message.
 */
private static void generateNotification(Context context, String message) {     
    /*NotificationManager  mNotificationManager = (NotificationManager)
              context.getSystemService(Context.NOTIFICATION_SERVICE);

      Intent inty = new Intent(context, MainActivity.class);
      inty.putExtra("message", message);
      PendingIntent contentIntent = PendingIntent.getActivity(context, 0,
              inty, PendingIntent.FLAG_UPDATE_CURRENT);

      NotificationCompat.Builder mBuilder =
              new NotificationCompat.Builder(context)
      .setSmallIcon(R.drawable.ic_launcher)
      .setContentTitle("GCM Notification")
      .setStyle(new NotificationCompat.BigTextStyle()
      .bigText(message))
      .setContentText(message);

      mBuilder.setContentIntent(contentIntent);
      mNotificationManager.notify(0, mBuilder.build());*/
    //Log.d("in GCM Intent", message);
     int icon = R.drawable.ic_launcher;
     long when = System.currentTimeMillis();
     NotificationManager notificationManager = (NotificationManager)
             context.getSystemService(Context.NOTIFICATION_SERVICE);
     Notification notification = new Notification();
     StringBuffer sb = new StringBuffer();
     if(message != null){
        Log.d("in GCM Intent", "not null");
     if(message.contains("@@@@@@@@@@@@"))
     {

         Log.d("in GCM Intent", "got  @");
         String []parts = message.split("@@@@@@@@@@@@");

         Log.d("After : separate", parts[0] + "" + parts[1]);
         sb.append(parts[0]);
         sampleDB= context.openOrCreateDatabase(SAMPLE_DB_NAME, SQLiteDatabase.OPEN_READWRITE, null);
         ContentValues values = new ContentValues();
         values.put("title", parts[0]);
         DateFormat df = new SimpleDateFormat("EEE, d MMM yyyy, HH:mm");
         String date = df.format(Calendar.getInstance().getTime());
         values.put("time", date);
         values.put("message", parts[1]);   
         try{
         sampleDB.beginTransaction();
         sampleDB.insert(SAMPLE_TABLE_NAME, null, values); 
         sampleDB.setTransactionSuccessful();

         }
         catch(Exception e)
         {
             Log.d("Exception",e.toString());
         }
         finally{
             sampleDB.endTransaction();
         }
         sampleDB.close();
     }
     else
     {
         sb.append(message);
     }
     }
     else
     {
         sb.append("No data");
     }
     String title = context.getString(R.string.app_name);
      notification.when = when;
      notification.icon = icon;
     Intent notificationIntent = new Intent(context, MainActivity.class);
     notificationIntent.putExtra("message", message);
     //set intent so it does not start a new activity
     notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP |
             Intent.FLAG_ACTIVITY_SINGLE_TOP);
     PendingIntent intent =
             PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
     notification.setLatestEventInfo(context, title, sb.toString(), intent);
     notification.flags |= Notification.FLAG_AUTO_CANCEL;

     //Play default notification sound
     notification.defaults |= Notification.DEFAULT_SOUND;

     //Vibrate if vibrate is enabled
     notification.defaults |= Notification.DEFAULT_VIBRATE;
     notificationManager.notify(0, notification);  
}

}

Ich habe versucht auf Google über dieses Thema und fand einige Daten, wie die folgenden, aber es macht auch keinen Sinn.

link1

link2

link3

Bearbeitet:- ich habe eingefügt, der code von GCMIntentService als gefragt.