Android NotificationManager giving me “no valid small icon” error

Question

I am having a strange error with notification manager.

@Override
public void onMessageReceived(String from, Bundle data)
{
     Log.i(TAG, \"IP : \" + (Strin         


        

Answer 1

According to the 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);
    }
}

This error only happened when you set target API > LOLLIPOP_MR1(22) and notification do not have a small icon.