How to get data from DialogFragment to a Fragment?

Question

Imagine, I have FragmentA from which I startDialogFragment (there are EditText in box). How to can I get back the value from the EditTex

Answer 1

Assume a situation that you are uploading some file to server , on clicking of upload button a dialog should open,prompting for title and optional tag.And the dialog itself containing 2 buttons say cancel and continue.

make the UI as you wish by using layout xml file.

then create one class that extending DialogFragment. inflate the layout and initialize views inside onCreateView() method.

Inside that class create one interface

 public interface uploadDialogInterface

   {
       public void senddata(String title, String tag);
   }

    uploadDialogInterface interfaceObj;
    String title="";
    String tag=" ";

And the important thing is you need to override onAttach() method

 @Override
public void onAttach(Context context) {
    super.onAttach(context);
    this.context=context;
    interfaceObj= (uploadDialogInterface) getTargetFragment();
}

And in the on Button click call the interface method like

     @Override
public void onClick(View v) {
    int id=v.getId();
    if(id== R.id.vB_fud_cancel)
    {
        dismiss();
    }
    else if(id== R.id.vB_fud_upload)
    {
        title=mVideotitle.getText().toString();
        tag=mOptionaltag.getText().toString();
        if(mVideotitle.getText().toString().isEmpty()) {
            Snackbar.make(mVideotitle,"Please enter the video title", Snackbar.LENGTH_SHORT).show();
       }else
        {
            interfaceObj.senddata(title,tag);
            dismiss();

        }
    }
}

And inside the Fragment or activity from which you are launching the dialog should contain setTargetFragment attribute.

private void callUploadDialog()
{
    UploadDialogFragment fragment = new UploadDialogFragment();
    fragment.setTargetFragment(this, 0);
    FragmentManager manager = getFragmentManager();
    FragmentTransaction ft = manager.beginTransaction();
    ft.setCustomAnimations(R.anim.fade_in, R.anim.fade_in);
    fragment.show(ft, "UploadDialogFragment");
    fragment.setCancelable(false);
}

And finally you should implement the interface (that was declared inside the dialog fragment) and override the method

@Override
public void senddata(String title,String optionaltag) {
    this.videoTitle=title;
    this.optionalTag=optionaltag;

}

I think this post will be helpful for those who are using dialog fragment for the first time . I was struggled to find the solution . And hopefully this will solve someone's problem in the future. (Sorry for the language)