Service (Android Notification): Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
49
What is a NullPointerException, and how do I fix it?
119751
How can I send result data from Broadcast Receiver to Activity
32065
Attempt to de-reference a null object: Trigger
38502
Broadcast Receiver as inner class in Android
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
58054
When is it OK to catch NullPointerException?
81836
Java Wait and Notify: IllegalMonitorStateException
133543
Service vs IntentService in the Android platform
12362
Detect a new Android notification
38780
Checking for null before ToString()
78586
Why doesn't "System.out.println" work in Android?
120566
Compare two objects in Java with possible null values
67426
Why are wait() and notify() declared in Java's Object class?
117611
Android Context.bindService always returns false and ServiceConnection object is never triggered
60368
How to send a JSON object over Request with Android?
29684
How to check if an object is nullable?
6719
How can I receive OutputDebugString from a service?