When Activity is destroyed on background,how to remove fragment

Question

When my app switches to background,the system memory is low, then android will destroy my activity.At that time,I want to remove the fragments attached to activity,so that when activity switches to foreground,I can avoid any abnormal behavior of that activity.I do it like this:

@Override
    public void onSaveInstanceState(Bundle outState) {
        FragmentManager fm = getSupportFragmentManager();
        AbstractBaseViewFragment previous = (AbstractBaseViewFragment) fm.findFragmentByTag(FRAGMENT_TAG);
        if (previous != null) {
            fm.beginTransaction().remove(previous).commitAllowingStateLoss();
            fm.executePendingTransactions();
        }
        super.onSaveInstanceState(outState);
    }

so I want to ask:Are there any other good ideas to finish this target?Will my method cause any crashes?

Answer 1

You can try this: ft.detach(previous);

if (previous != null) {
                FragmentTransaction ft = fm.beginTransaction();
                ft.detach(previous);
                ft.remove(previous);
                ft.commitAllowingStateLoss();
... // the rest of your code
            }