get the latest fragment in backstack

Question

How can I get the latest fragment instance added in backstack (if I do not know the fragment tag & id)?

FragmentManager fragManager = activity.getSupport         


        

Answer 1

I personnaly tried many of those solutions and ended up with this working solution:

Add this utility method that will be used several times below to get the number of fragments in your backstack:

protected int getFragmentCount() {
    return getSupportFragmentManager().getBackStackEntryCount();
}

Then, when you add/replace your fragment using FragmentTransaction method, generate a unique tag to your fragment (e.g.: by using the number of fragments in your stack):

getSupportFragmentManager().beginTransaction().add(yourContainerId, yourFragment, Integer.toString(getFragmentCount()));

Finally, you can find any of your fragments in your backstack with this method:

private Fragment getFragmentAt(int index) {
    return getFragmentCount() > 0 ? getSupportFragmentManager().findFragmentByTag(Integer.toString(index)) : null;
}

Therefore, fetching the top fragment in your backstack can be easily achieved by calling:

protected Fragment getCurrentFragment() {
    return getFragmentAt(getFragmentCount() - 1);
}

Hope this helps!