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Android Threads and Services Introducing Services Creating a Service

Posted by REINHARD CHEFU
REINHARD CHEFU
5,163 Points

Threads and services

Finally, inside the Button's onClickListener, start the new TwitterService. And don't forget to call 'stopSelf()' on the Service once it's done working!

TwitterService.java 
public class TwitterService extends Service {
  TwitterClient twitterClient = new TwitterClient();
  public TwitterHandler twitterHandler;

  @Override
  public void onCreate() {
    TwitterThread thread = new TwitterThread();
    thread.setName("TwitterThread");
    thread.start();

    twitterHandler = thread.twitterHandler;
  }

  @Override
  public IBinder onBind(Intent intent) {
    return null;
  }

  @Override 
  public int onStartCommand(Intent intent, int flags, int startId) {
    Message message = Message.obtain();
   twitterHandler.sendMessage(message);
    return Service.START_REDELIVER_INTENT;
  }



  class TwitterThread extends Thread {
    TwitterHandler twitterHandler;
    @Override
    public void run() {
      Looper.prepare();
      twitterHandler = new TwitterHandler();
      Looper.loop();
    }
  }    

  class TwitterHandler extends Handler {
    @Override
    public void handleMessage(Message msg) {
      twitterClient.update();
    }
  }
}
MainActivity.java 
public class MainActivity extends Activity {
  Button button;   

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

    button = (Button) findViewById(R.id.update_button);
    button.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v){

      }
    });
  }
}