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Android Threads and Services Introducing Services Creating a Service

tomandrews
tomandrews
13,183 Points
Posted by tomandrews
tomandrews
13,183 Points

Creating a service challenge 3 Of 3

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();    

  TwitterThread twitterThread;

  @Override 
  public void onCreate() {
    twitterThread = new TwitterThread();
    twitterThread.start();
  }

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

  @Override
  public int onStartCommand(Intent intent, int flags, int startId){
      Message message = Message.obtain();
      twitterThread.twitterHandler.sendMessage(message);
      return 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;
  private TwitterService service;

  @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){
        service.startService();
        service.stopSelf();
      }
    });
  }
}
TERRENCE MAVHUNGA
TERRENCE MAVHUNGA
6,053 Points

//place this line of code just after twitterClient.update();

stopSelf();

it worked for me