Fragment.isAdded returns true after fragment removed from a container

Question

I have an activity with below layout

Answer 1

maybe your can encapture commition of FragmentTransaction like this

private void commitFragmentTransaction(final FragmentTransaction ft, boolean allowStateLoss, boolean now) {
    if (ft == null || ft.isEmpty()) {
        return;
    }

    if (allowStateLoss) {
        if (now) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                ft.commitNowAllowingStateLoss();
            } else {
                ft.commitAllowingStateLoss();
                mFragmentManager.executePendingTransactions();
            }
        } else {
            ft.commitAllowingStateLoss();
        }
    } else {
        if (now) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                ft.commitNow();
            } else {
                ft.commit();
                mFragmentManager.executePendingTransactions();
            }
        } else {
            ft.commit();
        }
    }
}

commitNow() and commitNowAllowingStateLoss() is Added in API level 24

Calling commitNow is preferable to calling commit() followed by executePendingTransactions() as the latter will have the side effect of attempting to commit all currently pending transactions whether that is the desired behavior or not.