Why ProgressBar becomes null when i call a Fragment's method from FragmentActivity?
93603
Update data in ListFragment as part of ViewPager
120392
Best practice for instantiating a new Android Fragment
156167
ViewPager and fragments — what's the right way to store fragment's state?
89682
Android: Pass data(extras) to a fragment
95399
What is Activity.finish() method doing exactly?
289
What is a NullReferenceException, and how do I fix it?
49
What is a NullPointerException, and how do I fix it?
30055
ProgressBar under Action Bar
95992
JProgressBar wont update
33103
How come invoking a (static) method on a null reference doesn't throw NullPointerException?
2116
IllegalArgumentException or NullPointerException for a null parameter?
16745
Show ProgressDialog Android
55951
Passing arraylist of objects between activities
65815
How to pass a value from one Activity to another in Android?
74966
How to add Action Bar from support library into PreferenceActivity?
141968
Creating tabs using Fragments now that TabActivity is deprecated
8283
Why does null reference print as "null"