Progressbar on a null object reference in Fragment
49
What is a NullPointerException, and how do I fix it?
114816
Is null reference possible?
120566
Compare two objects in Java with possible null values
46944
Null pointer Exception - findViewById()
8283
Why does null reference print as "null"
80018
Accessing class members on a NULL pointer
139257
Finishing current activity from a fragment
140880
Where is ProgressRing Control?
88920
Is using NULL references OK?
289
What is a NullReferenceException, and how do I fix it?
142578
Can't create handler inside thread that has not called Looper.prepare() inside AsyncTask for ProgressDialog
58054
When is it OK to catch NullPointerException?
127992
Error non-default constructors in fragments
4422
How to display an existing ListFragment in a DialogFragment
37988
System.NullPointerException: Attempt to de-reference a null object:
120392
Best practice for instantiating a new Android Fragment
104501
How do I enforce null checking?