How to send information of fragment to activity and In reverse in android

Question

How can I send information of activity to fragment and of fragment to activity in android?

Answer 1

Your question is very BAD and not clear! Please before ask any question, first read this link then ask question.

But for use custom method in Activity from Fragment, you can use my below example.

First write your Method in your activity:

public void showMessage(){
    Toast.makeText(context, "YOUR MESSAGE", Toast.LENGTH_SHORT).show();
}

Then, you should create instance of activity in your Fragment :

public class YOUR_FRAGMENT_NAME extends Fragment {
   private YOUR_ACTIIVTY_NAME yourActivity;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_layout, container, false);

        //Initialize
        mainActivity = (MainActivity) getActivity();

        //Call method 
        yourActivity.showMessage();

    return view;
}

I hope help you.