Android Set Text of TextView in Fragment that is in FragmentPagerAdapter

Question

This one is driving me nuts. Basically, I want to create a ViewPager and add a few Fragments to it. Then, all I want to do, it set a value in one of th

Answer 1

This line:

TextView t = (TextView) findViewById(R.id.someTextViewInFragmentA);

is looking for the view in your ParentActivity. Of course it wont find it and that's when you get your NPE.

Try something like this:

1. Add a "tag" to your fragments when you add them

2. Use someFragment = getSupportFragmentManager().findFragmentByTag("your_fragment_tag")

3. Get the view of the fragment fragmentView = someFragment.getView();

4. And finally find your TextView and set the text

   TextView t = (TextView) fragmentView.findViewById(R.id.someTextViewInFragmentA); t.setText("some text");