WelcomeFragment.java

package pro.dbro.ble.ui.fragment;


import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.TextView;

import pro.dbro.ble.R;

public class WelcomeFragment extends Fragment {

    public interface WelcomeFragmentCallback {
        public void onNameChosen(String name);
    }

    private WelcomeFragmentCallback mCallback;

    public WelcomeFragment() {
        // Required empty public constructor
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mCallback = (WelcomeFragmentCallback) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement WelcomeFragmentCallback");
        }
    }

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

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View root = inflater.inflate(R.layout.fragment_welcome, container, false);
        ((EditText) root.findViewById(R.id.aliasEntry)).setOnEditorActionListener(new TextView.OnEditorActionListener() {
            @Override
            public boolean onEditorAction(TextView textView, int i, KeyEvent keyEvent) {
                mCallback.onNameChosen(textView.getText().toString());
                return false;
            }
        });
        return root;
    }


}