Attempt to invoke virtual method 'void android.widget.ImageButton.setOnClickListener' on a null object reference
49
What is a NullPointerException, and how do I fix it?
42958
Method Overloading for null argument
33577
Implement Thread Android in my class?
289
What is a NullReferenceException, and how do I fix it?
137692
NullPointerException when working with arrays
96453
Caught Throwable or Exception is null
73120
Nullpointerexception when trying to send data from activity to class
63430
attempt to re-open an already-closed object: SQLiteDatabase
92844
getOnClickListener() in Android views
88920
Is using NULL references OK?
87189
System.NullPointerException
37552
Using AsyncTask to load Images in ListView
143664
setOnClickListener crashs my android app
57327
BaseAdapter class wont setAdapter inside Asynctask - Android
87728
ArgumentNullException or NullReferenceException from extension method?
66284
NullPointerException when Creating an Array of objects
64200
Can Java's NullPointerException be changed to report on which variable was null?