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Android Threads and Services Introducing Services Creating a Service

2 of 3 Then override 'onStartCommand', and when started send a Message to your Thread's Handler to tell

Challenge Task 2 of 3

Then override 'onStartCommand', and when started send a Message to your Thread's Handler to tell it to start updating!

can someone tell me whats wrong with my code. i am receiving 1 error

TwitterService.java
public class TwitterService extends Service {
  TwitterClient twitterClient = new TwitterClient();    
  private TwitterHandler twitterHandler;
  @Override
  public void onCreate () {
    TwitterThread twitterThread = new TwitterThread ();
    twitterThread.start();

    twitterHandler = twitterThread.twitterHandler;
  }

  @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;   

  @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){

      }
    });
  }
}

4 Answers

Try changing START_REDELIVER_INTENT to Service.START_REDELIVER_INTENT

J T
J T
10,091 Points

Im having the same problem

Giovanni Salas
Giovanni Salas
10,685 Points

@Override public int onStartCommand (Intent intent, int flags, int startId) { Message message = Message.obtain(); Delete this->twitterThread.<- twitterHandler.sendMessage (message); return START_REDELIVER_INTENT; }

public class TwitterService extends Service { TwitterClient twitterClient = new TwitterClient();
private TwitterHandler twitterHandler; @Override public void onCreate(){

  TwitterThread thread = new TwitterThread();
  thread.setName("TwitterThread");
  thread.start();
  twitterHandler = thread.twitterHandler;

}

@Override public int onStartCommand(Intent itent , int flags , int startID){ Message message = Message.obtain(); twitterHandler.sendMessage (message); //mhandler.sendMessage (message); return Service.START_REDELIVER_INTENT;

}

 @Override

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

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(); } } }