Clear fragment back stack programmatic

Question

What is the best way to clear fragment back stack programmatic?

I've implemented screen navigation using only one activity and set of fragments. I would like to have method that brings user to the login screen(when logout timeout expires) and clears all fragment history, what is the best way to do that? I found few answers here yet I've dont know which is the best one...Thanks in advance!

for the moment I'm using this one

public void clearBackStack() {
    FragmentManager fragmentManager = holder.getSupportFragmentManager();

    while (fragmentManager.getBackStackEntryCount() != 0) {
        fragmentManager.popBackStack(null, 0);
    }
}

Yet sometimes I'm getting outOfMemoryException

Did you check [this one](http://stackoverflow.com/questions/6186433/clear-back-stack-using-fragments) — Lalit Poptani, Apr 19 '12 at 09:40
I've tried similar one, or maybe I'm wrong... updated my questions — Orest, Apr 19 '12 at 09:45
I've tried you solution for the moment I'm not getting any exceptions. Yet I can't verify difference betweens mines and yours code. Thanks anyway. — Orest, Apr 19 '12 at 10:42

score 13 · Answer 1 · edited Nov 18 '12 at 19:36

This is a pretty old question at this point. Anyway I tried your code and it looks like you've got an infinite loop.

popBackStack(null, 0) searches for a fragment with a null tag, which will never be found. The while loop will cycle until memory runs out. The other issue with popBackStack is that the pop is not necessarily immediately performed so the while loop could run for a while.

If you want to remove fragments from the back stack irrespective of tag or ID, use fragmentManager.popBackStackImmediate() instead.

score 0 · Answer 2 · edited Feb 16 '17 at 11:39

0

You can use FragmentManager.popBackStack() to clear the backstack.

fragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE);

This will empty the stack without loading into the container.

edited Feb 16 '17 at 11:39

Sergei Bubenshchikov

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answered Feb 16 '17 at 10:05

Amal George Thomas

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Clear fragment back stack programmatic

2 Answers2