findFragmentByTag() returns null after perform a FragmentTransaction using replace() method

Question

My Android app consists three fragments: A, B and C. They\'re loaded in the two containers defined in the MainActivity layout.

When th

Answer 1

Be sure you are adding or replacing the fragment in the proper way

Next statement will add the fragment but it will return null when using getFragmentManager().findFragmentByTag(tag):

transaction.add(R.id.mainContent, fragment);


This way it will work;

transaction.add(R.id.mainContent, fragment, tag);