setContentView execute too late

Question

I have a problem, I make a simple application to show you my problem. I want that setContentView executes and displays the .xml BEFORE the Sleep is executed. I thought everything will be execute in order? Is there anyone how can say me why it doesn't do that?

public class MainActivity extends Activity {

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

        try {
            Thread.sleep(10000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        // do something
    }

Thanks a lot!

EDIT:

Here is the real OnCreate, seems to be a bigger problem.

Everything with the sleep worked fine, but with the Connect method there are problems.

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

ConnectBluetooth();

}   

In the ConnectBluetooth() method, I just create a new Socket and try a connection.

With a ned thread or a handler it doesn't seems to work, what should I do then? Use something like an asynctask?

Thanks a lot in common!

Answer 1

The layout isn't displayed until after the creation process has finished, after onResume() is called. However there is no callback for when the layout is displayed, but you can use a Handler and Runnable to do this.

---

Create a couple field variables:

Handler handler = new Handler();
Runnable delay = new Runnable() {
    @Override
    public void run() {
        // Do something 
    }
};

And onCreate() call:

handler.postDelayed(delay, 10000);