How to replace a DialogFragment by another DialogFragment?

Question

We add a general/normal Fragment programatically by doing something like:

fragmentTransaction.add(containerViewId, fragmentToAdd, fragmentTag);

and we replace a Fragment by another by doing something like:

fragmentTransaction.replace(containerViewId, newFragment, tagOfNewFragment);

But we add a DialogFragment by

dialogFramentInstance.show(fragmentManager, fragmentTag);

The question is that how should I replace this DialogFragment which has been added by the show() method?

Answer 1

dialogFramentInstance.show(fragmentManager, fragmentTag);

Just adds the dialog fragment to the fragment manger using an add transaction (with no container).

In order to replace fragments you'll need a container and since you don't have one your only option is to dismiss() the first one and show() the new one.

Answer 2

private void closeYourDialogFragment() {
    FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
    Fragment fragmentToRemove = getSupportFragmentManager().findFragmentByTag("your_dialog_fragment");
    if (fragmentToRemove != null) {
        ft.remove(fragmentToRemove);
    }
    ft.addToBackStack(null);
    ft.commit(); // or ft.commitAllowingStateLoss()
}

private void replaceYourDialogFragment() {
    closeYourDialogFragment();

    YourDialogFragment yourDialogFragment = new YourDialogFragment();
    yourDialogFragment.show(getSupportFragmentManager(), "your_dialog_fragment");
}