Android Working with DialogFragment

fragment_custom_dialog.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="iterator.ir.a016.CustomDialogFragment">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="20dp"
        android:paddingBottom="30dp">

        <TextView
            android:id="@+id/textViewMessage"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/dialog_msg"
            android:gravity="center"/>

        <LinearLayout
            android:layout_below="@id/textViewMessage"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            android:layout_marginTop="10dp"
            android:gravity="center">
            <Button
                android:id="@+id/buttonNo"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/no"
                android:layout_marginRight="10dp"
                android:layout_marginEnd="10dp"/>

            <Button
                android:id="@+id/buttonYes"
                android:layout_marginLeft="10dp"
                android:layout_marginStart="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/yes"/>
        </LinearLayout>
        
    </RelativeLayout>

</FrameLayout>

CustomDialogFragment.java

public class CustomDialogFragment extends DialogFragment {

    private OnCustomDialogButtonClickListener mListener;

    Button buttonNo;
    Button buttonYes;

    public CustomDialogFragment() {

    }


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

        View view=inflater.inflate(R.layout.fragment_custom_dialog, null);


        buttonNo= (Button) view.findViewById(R.id.buttonNo);
        buttonYes= (Button) view.findViewById(R.id.buttonYes);

        buttonNo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (mListener != null) {
                    mListener.onCustomDialogClick(v);
                }

                dismiss();
            }
        });

        buttonYes.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                if (mListener != null) {
                    mListener.onCustomDialogClick(v);
                }

                dismiss();
            }
        });

        setCancelable(false);
        return view;
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnCustomDialogButtonClickListener) {
            mListener = (OnCustomDialogButtonClickListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnCustomDialogButtonClickListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    public interface OnCustomDialogButtonClickListener {
        void onCustomDialogClick(View view);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="iterator.ir.a016.MainActivity">


    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:id="@+id/buttonShow"
        android:text="@string/show" />
</RelativeLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity implements CustomDialogFragment.OnCustomDialogButtonClickListener {

    Button buttonShow;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        buttonShow= (Button) findViewById(R.id.buttonShow);

        buttonShow.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                CustomDialogFragment customDialogFragment=new CustomDialogFragment();
                customDialogFragment.show(getSupportFragmentManager(),"customDialog1");
            }
        });
    }

    @Override
    public void onCustomDialogClick(View view) {
        switch (view.getId())
        {
            case R.id.buttonNo:
                Toast.makeText(this,"No",Toast.LENGTH_LONG).show();
                break;
            case R.id.buttonYes:
                Toast.makeText(this,"Yes",Toast.LENGTH_LONG).show();
        }
    }
}

References
https://github.com/mhdr/AndroidSamples/tree/master/016