How 'java.lang.NullPointerException:void android.support.v7.app.ActionBar.setElevation(float)' on a null object reference'
49
What is a NullPointerException, and how do I fix it?
19797
when EditText is empty and click calculateButton, app crashes
45196
Calling class method through NULL class pointer
103797
Android:android.view.ViewRoot$CalledFromWrongThreadException - How to solve the problem?
66403
What does "invalid statement in fillWindow()" in Android cursor mean?
37988
System.NullPointerException: Attempt to de-reference a null object:
96046
Static fields on a null reference in Java
149666
Why can't a null-reference exception name the object that has a null reference?
74172
Binary XML file line #2: Error inflating class android.widget.LinearLayout
68787
Why The constructor ArrayAdapter(new View.OnKeyListener(){}, int, String[]) is undefined
114816
Is null reference possible?
73034
StringBuilder append() and null values
96843
What will happen when I call a member function on a NULL object pointer?
97325
DialogFragment causing nullpointer crash
92797
How to debug NullPointerException in selenium-java
55274
Java: Exception itself is null
80631
NullPointerException but compiling?