Chromecast Sender Application

MainActivity.java

package io.github.luizguilhermefr.castcastcast;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;

import com.google.android.gms.cast.framework.CastButtonFactory;
import com.google.android.gms.cast.framework.CastContext;

public class MainActivity extends AppCompatActivity {

    private MenuItem mMediaRouteMenuItem;
    
    private CastContext mCastContext;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mCastContext = CastContext.getSharedInstance(this);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        getMenuInflater().inflate(R.menu.menu_main, menu);
        mMediaRouteMenuItem = menu.findItem(R.id.media_route_menu_item);
        CastButtonFactory.setUpMediaRouteButton(getApplicationContext(), menu, R.id.media_route_menu_item);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        switch (id) {
            case R.id.menu_action_exit:
                finish();
                break;
        }
        return super.onOptionsItemSelected(item);
    }
}