go back button between "grand child" fragment

Question

I have an Activity that is holding 5 fragments. One of those fragments is holding 5 more fragments. if i add to the fragmentManager a .addToBackStack(null). the back button returns to the last fragment from the activity and not to the last fragment from the "father" fragment (that is holding 5 more fragments).

Any help please..

EDIT:

ACTIVITY:

fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().
            replace(mainContent.getId(), currentFragment)
            .addToBackStack(null)
            .commit();


FRAGMENT:

fragmentManager = getChildFragmentManager();
fragmentManager.beginTransaction().
            replace(mainContent.getId(), currentFragment)
            .addToBackStack(null)
            .commit();

Make sure all your `FragmentTransactions` are from the same FragmentManager. You're probably using two different fragment managers at the moment. — prettyvoid, Oct 16 '14 at 19:05
I am i have a activity.getFragmentManager. and is the fragment i am using getChildFragmentManager. — ilan, Oct 16 '14 at 19:06
i switched to the same fragment manager and then i get at the fragments Childs a null when i call getParentFragment — ilan, Oct 16 '14 at 19:11
So you're using two Fragment Managers. What's the code you're calling on your 'back' inside the Fragment with child fragments? Also do you mean the physical back button? — prettyvoid, Oct 16 '14 at 19:12
i don't have any code in the "back" i just added to the transaction addToBackStack(null). and yes i mean the physical button — ilan, Oct 16 '14 at 19:14
Share the code for your activity and fragment, at least the parts where you're creating fragment transactions and committing. — prettyvoid, Oct 16 '14 at 19:51
I think what you're facing is a bug in Android SDK. See my post — prettyvoid, Oct 16 '14 at 20:27

score 1 · Accepted Answer · edited May 23 '17 at 12:20

1

This is probably the bug mentioned here: https://code.google.com/p/android/issues/detail?id=40323

You can workaround it by handling the 'back' manually. Refer to this thread for a lot of workarounds: Android 4.2: back stack behaviour with nested fragments

edited May 23 '17 at 12:20

Community

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answered Oct 16 '14 at 20:30

prettyvoid

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score -1 · Answer 2 · answered Oct 16 '14 at 18:53

I think the issue might be with "the fragmentManager" here. There is more than one FragmentManager.

There is the FragmentManager for the Activity – Activity.getFragmentManager().

And there is the FragmentManager for child Fragments within a Fragment – Fragment.getChildFragmentManager() or Fragment.getFragmentManager().

Let's say you have an activity, a parentFragment and a childFragment. So, instead of activity.getFragmentManager(), I think in your case, you might want either childFragment.getFragmentManager() or parentFragment.getChildFragmentManager().

Note that if you are using the Support package, the names may be different.

I am using two fragmentManagers, but i need them. – ilan Oct 16 '14 at 19:36 — ilan, Oct 16 '14 at 19:36

go back button between "grand child" fragment

2 Answers2