运行实时广播应用背景

Question

我制作了一个与Vitamio合作的应用程序。当点击按钮但流媒体停止时，我也转发到收音机的Facebook页面。我想继续直播。我的代码在这里：

public class MainActivity extends Activity {

private Button startButton,facebookButton,twitterButton;
private VideoView videoView;
private String httpLiveUrl = "http://someURL.m3u8";

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

    this.setTitle("Standart FM");

    startButton = (Button) findViewById(R.id.buttonBasla);
    facebookButton = (Button)findViewById(R.id.buttonFacebook);
    twitterButton = (Button)findViewById(R.id.buttonTwitter);
    videoView = (VideoView)findViewById(R.id.VideoView);

    videoView.setVideoURI(Uri.parse(httpLiveUrl));

    if (!io.vov.vitamio.LibsChecker.checkVitamioLibs(MainActivity.this))
        return  ;


    new getStream().execute();

    startButton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
             if(videoView.isPlaying()){
                 videoView.pause();
                 startButton.setBackgroundResource(R.drawable.andplaybtn);
             }else{
                 startButton.setBackgroundResource(R.drawable.andstopbtn);
                 videoView.start();

             }
        }
    });

    facebookButton.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent browserIntent = new Intent(Intent.ACTION_VIEW, 
                    Uri.parse("https://www.facebook.com/StandartFM"));
            startActivity(browserIntent);
        }
    });
} 

如果点击并打开浏览器，如何在后台运行？