How to receive result from a dialog fragment to a dialog fragment

Question

I have a dialog A which is used in many activities. I create new dialog B and implemented a interface to get the call from A. In both case i used dialog fragment. For many Activities i can manage the callback from A using

if (getActivity() instanceof MyActivity) 
((MyActivity) getActivity()).manageSelectedItem();

But if dialog A is hosted in another dialog B then how to manage the callback.

I have searched and found solution based on Activity/FragmentActivity/Fragment on this but unable to solve the issue on DialogFragment.

What's the question again? Are you trying to pass data from from `DialogFragment` B to `DialogFragment` A? The solution you found, what's the problem with it? — Gennadii Saprykin, Jun 21 '16 at 14:37

score 1 · Answer 1 · answered Jun 21 '16 at 14:38

1

I suggest you to look about Bus or use BroadcastReceiver for do it, multiples callbacks can let your code coupled, and this is horrible for maintenence.

answered Jun 21 '16 at 14:38

diogojme

2,309
1
19
25

Thanks. i posted my solution. – Patriotic Jun 21 '16 at 15:09

score 1 · Answer 2 · edited May 23 '17 at 12:33

1

You can find answere heare. Or you can lock fragment beerwin Activity.

getSuportFragmentManager().findFragmentByTag(TAG_FRAGMENT_A).callback();

edited May 23 '17 at 12:33

Community

1
1

answered Jun 21 '16 at 14:55

Vitaliy Ptitsin

329
1
5
14

Thanks. i posted my solution. – Patriotic Jun 21 '16 at 15:09

score 1 · Accepted Answer · answered Jun 21 '16 at 15:07

I have solved the issue.I just implemented a interface in dialog B.Checks and initialize interface in onCreate method in dialog A whether the hosting dialog is activity /dialog.

Here is the code

Dialog DialogTwo as A :

public class DialogTwo extends DialogFragment {


@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    try {
        if(!(getActivity() instanceof SelectedItemListener)) {
            callback = (SelectedItemListener) getTargetFragment();
        }
    } catch (Exception e) {
        throw new ClassCastException("Calling Fragment must implement SelectedItemListener");
    }

}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    return super.onCreateView(inflater, container, savedInstanceState);
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(getActivity(), R.style.AlertDialogCustom));

    builder.setTitle(R.string.select_color)
            .setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    if (getActivity() instanceof SelectedItemListener) {
                            ((NewExerciseActivity) getActivity()).manageSelectedItem();
                    }else {
                        callback.manageSelectedItem();
                    }
                }
            })
            .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                }
            });

    return builder.create();
   }
}

Call from Dialog B :

 private void showDialog() {
    FragmentActivity activity = (FragmentActivity) getActivity();
    FragmentManager fm = activity.getSupportFragmentManager();
    DialogTwo dialogTwo = new DialogTwo();
    dialogTwo.setTargetFragment(this,0);
    dialogTwo.show(fm, "dialogTwo");
}

@Override
public void manageSelectedItem() {
       //do something
}

How to receive result from a dialog fragment to a dialog fragment

3 Answers3