Hold down button to give option to save as ringtone?

I've looking for an answer for this question but no one really gives a clear answer on what code should be or look like. I've created am android app that plays sounds when you click a button but I'd like the use to have to option when they hold down on the button a display comes up where they can download or save as ringtone. Does anyone know how you would go about doing this?

Here's my code:

 MediaPlayer mediaPlayer;

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


    Button Bus = (Button) findViewById(R.id.b1);
    Bus.setOnClickListener (new OnClickListener(){

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            Uri p1 = Uri.parse("android.resource://" + getPackageName() +
                    "/" + R.raw.bus);
            mediaPlayer = MediaPlayer.create(MainActivity.this, p1);
            mediaPlayer.start();
        }

    });

and my xml:

<Button
        android:id="@+id/b1"
        android:layout_width="125dp"
        android:layout_height="60dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="18dp"
        android:layout_marginStart="21dp"
        android:layout_marginTop="25dp"
        android:background="@drawable/jay"
        android:shadowColor="#00FF00"
        android:shadowDx="0"
        android:shadowDy="0"
        android:shadowRadius="10"
        android:text="@string/b1"
        android:textColor="#000000" />

Thanks, I'd really appreciate any help on this issue!