What is difference between getSupportFragmentManager() and getChildFragmentManager()?

by

The definition of getChildFragmentManager() is:

Return a private FragmentManager for placing and managing Fragments
inside of this Fragment.

Meanwhile the definition of getFragmentManager() (or in this case getSupportFragmentManager()) is:

Return the FragmentManager for interacting with fragments associated
with this fragment’s activity.

Basically, the difference is that Fragment’s now have their own internal FragmentManager that can handle Fragments. The child FragmentManager is the one that handles Fragments contained within only the Fragment that it was added to. The other FragmentManager is contained within the entire Activity.

In this case, what I’m guessing is you’ve added the Fragments to the Activity’s FragmentManager. You get the child FragmentManager which doesn’t contain what you are looking for. Thus you get the exception because it can’t find the Fragment with the given ID because it’s in a different FragmentManager.

More Related Contents:

  1. Update data in ListFragment as part of ViewPager
  2. How many Activities vs Fragments?
  3. Google Fused Location API causing error (Android)
  4. How to implement onBackPressed() in Fragments?
  5. How to determine when Fragment becomes visible in ViewPager
  6. Do fragments really need an empty constructor?
  7. IllegalStateException: Can not perform this action after onSaveInstanceState with ViewPager
  8. How to transfer some data to another Fragment?
  9. Dilemma: when to use Fragments vs Activities:
  10. Why fragments, and when to use fragments instead of activities?
  11. Programmatically go back to the previous fragment in the backstack
  12. Sharing data between fragments using new architecture component ViewModel
  13. Android: Fragments backStack
  14. reusing fragments in a fragmentpageradapter
  15. Alternatives to PreferenceFragment with android-support-v4
  16. I get the error “Unreachable statement” return in android
  17. When a Fragment is replaced and put in the back stack (or removed) does it stay in memory?
  18. In Fragment on back button pressed Activity is blank
  19. How do you create Preference Activity and Preference Fragment on Android?
  20. refresh fragment UI from fragmentActivity
  21. Android – save/restore fragment state
  22. findFragmentById always returns null
  23. How to replace the activity’s fragment from the fragment itself?
  24. isValidFragment Android API 19
  25. Communication between Fragments in ViewPager
  26. How to open fragment page, when pressed a notification in android
  27. OnCreateView called multiple times / Working with ActionBar and Fragments
  28. Integrating youtube to fragment
  29. Android Two Fragments in Same Activity
  30. Pop up window to display some stuff in a fragment

Leave a Comment