Android NotificationManager gibt mir "kein gültiges kleines Symbol" Fehler

Question

Ich habe einen seltsamen Fehler mit Benachrichtigungsmanager.

@Override 
public void onMessageReceived(String from, Bundle data) 
{ 
    Log.i(TAG, "IP : " + (String) data.get("ip")); 
    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 
    Intent acceptNextIntent = new Intent(MainActivity.BROADCAST_KEY_ACCEPT); 
//  acceptNextIntent.putExtra("ip", (String) data.get("blah")); //add stuff here 
    PendingIntent acceptNextPendingIntent = PendingIntent.getBroadcast(this, 0, acceptNextIntent, 0); 

    Intent declineNextIntent = new Intent(MainActivity.BROADCAST_KEY_DECLINE); 
    PendingIntent declineNextPendingIntent = PendingIntent.getBroadcast(this, 0, declineNextIntent, 0); 

    NotificationCompat.Action acceptAction = new NotificationCompat.Action 
       .Builder(R.drawable.common_signin_btn_icon_disabled_focus_light, "Grant Request", acceptNextPendingIntent).build(); 

    NotificationCompat.Action declineAction = new NotificationCompat.Action 
       .Builder(R.drawable.common_signin_btn_icon_focus_dark, "Decline Request", declineNextPendingIntent).build(); 

    NotificationCompat.Builder notification = new NotificationCompat.Builder(this) 
       .setContentTitle("New Password Request From " + (String) data.get("ip")) 
       .addAction(acceptAction) 
       .addAction(declineAction); 

    notificationManager.notify(1, notification.build()); //ERROR HERE 

Fehlermeldung:

9.474 9327-9371/com.inh.amnesia_application I/MyGcmListenerService: IP : 128.239.213.39 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime: Process: com.inh.amnesia_application, PID: 9327 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime: java.lang.IllegalArgumentException: Invalid notification (no valid small icon): Notification(pri=0 contentView=com.inh.amnesia_application/0x1090085 vibrate=null sound=null defaults=0x0 flags=0x0 color=0x00000000 actions=2 vis=PRIVATE) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at android.app.NotificationManager.notify(NotificationManager.java:222) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at android.app.NotificationManager.notify(NotificationManager.java:194) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at com.inh.amnesia_application.MyGcmListenerService.onMessageReceived(MyGcmListenerService.java:65) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at com.google.android.gms.gcm.GcmListenerService.zzt(Unknown Source) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at com.google.android.gms.gcm.GcmListenerService.zzk(Unknown Source) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at com.google.android.gms.gcm.GcmListenerService.zza(Unknown Source) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at com.google.android.gms.gcm.GcmListenerService$1.run(Unknown Source) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
11-10 19:49:59.477 9327-9371/com.inh.amnesia_application E/AndroidRuntime:  at java.lang.Thread.run(Thread.java:818) 

Bedeutet dies, dass die Symbole ich Zugang versuche gar nicht existiert? Ich bin nicht sicher, wie man diesen Fehler interpretiert, und das Suchen dieser Fehlermeldung ergibt nichts.

Answer 1

Sie setzen kein Symbol für die Push-Benachrichtigung. Fügen Sie Ihrer Benachrichtigung .setSmallIcon(R.drawable.your_icon) hinzu.

NotificationCompat.Builder notification = new NotificationCompat.Builder(this) 
      .setContentTitle("New Password Request From " + (String) data.get("ip")) 
      .setSmallIcon(R.drawable.your_icon) 
      .addAction(acceptAction) 
      .addAction(declineAction); 

Answer 2

Sie haben setSmallIcon() on the NotificationCompat.Builder nicht aufgerufen. Dadurch wird das Symbol angezeigt, das in der Statusleiste angezeigt wird, während Notification aktiv ist.

Answer 3

Nach dem Android NotificationManager Source Code

if (mContext.getApplicationInfo().targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1) { 
    if (notification.getSmallIcon() == null) { 
     throw new IllegalArgumentException("Invalid notification (no valid small icon): " 
       + notification); 
    } 
} 

Dieser Fehler nur geschehen, wenn Sie Ziel API gesetzt> LOLLIPOP_MR1 (22) und die Benachrichtigung nicht ein kleines Symbol hat.