Get Views from DialogFragment

Question

Implemented a dialog fragement this way:

public class ProgressFragment extends DialogFragment {

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    View v = getActivity().getLayoutInflater().inflate(R.layout.installation_page, null);
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    titleView = (TextView) v.findViewById(R.id.progressText);
    titleView.setText("progress");
    builder.setView(v);
    return builder.create();
}

 TextView titleView;

public TextView getTextView() {
    return titleView;
}

and i want to be able to update content of titleView, from whereever it is called. like:

ProgressFragment progressFragment = new ProgressFragment();
progressFragment.show(getSupportFragmentManager(),"");

issue is triers like:

((TextView)progressFragment.getDialog().findViewById(R.id.progressText)).setText("text");

and

progressFragment.getTextView().setText("text");

and

((TextView)progressFragment.getView().findViewById(R.id.progressText)).setText("working in this place");

all returns null. How do i do this. Thanks

Answer 1

No! No! No!

if you create your DialogFragment with

 `Dialog onCreateDialog(Bundle savedInstanceState)`

(your View is dead) as you created it with Dialog but not

public View onCreateView(LayoutInflater inflater,ViewGroup
               container,Bundle savedInstanceState) {

Looking at your code i will suggest you use the second method of creating your DialogFrament as you are just return a TextView cheese

but if you insist on your method, then your solution is, quite longer

progressFragment.getDialog().getWindow().getDecorView()

the decorview might be your TextView im not sure but overall

 progressFragment.getDialog().getWindow().findViewById();

Answer 2

Not so sure if this is a good practice but i fixed it using callbacks.

 public interface dialogViewCallBack {
    void onViewLoaded(TextView textView);
}

static dialogViewCallBack dialogViewCallBack;

public ProgressFragment progressFragment(dialogViewCallBack callBack) {
    dialogViewCallBack = callBack;
    return new ProgressFragment();
}

@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    View v = getActivity().getLayoutInflater().inflate(R.layout.installation_page, null);
    AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

    TextView titleView = (TextView) v.findViewById(R.id.progressText);
    titleView.setText("progress");
    builder.setView(v);
    dialogViewCallBack.onViewLoaded(titleView);
    return builder.create();
}

So, on the class that call progressFragment, i just do:

public class TestActivity extends AppCompatActivity implements ProgressFragment.dialogViewCallBack {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    ProgressFragment progressFragment = new ProgressFragment().progressFragment(this);
    progressFragment.show(getSupportFragmentManager(),"");

}

@Override
public void onViewLoaded(TextView textView) {
    // can assign the view to another view here.
    textView.setText("working here");
}
}