在模拟器上启动Android应用程序？

我是新开发Android应用程序和开发HelloWorld应用程序。在模拟器上启动Android应用程序？

@Override 
    protected void onCreate(Bundle savedInstanceState) { 

     super.onCreate(savedInstanceState); 

     TextView text = new TextView(this); 
     text.setText("Hello World"); 
     setContentView(text); 

    }

但是当我在AVD运行我的应用程序，以下内容出自于我的控制台。

[2013-04-07 17:01:31 - Myapp] R.java was modified manually! Reverting to generated version! 
[2013-04-07 17:01:48 - Myapp] ------------------------------ 
[2013-04-07 17:01:48 - Myapp] Android Launch! 
[2013-04-07 17:01:48 - Myapp] adb is running normally. 
[2013-04-07 17:01:50 - Myapp] Performing com.example.myapp.MainActivity activity launch 
[2013-04-07 17:01:53 - Myapp] Automatic Target Mode: using existing emulator 'emulator-5554' running compatible AVD 'dv' 
[2013-04-07 17:01:53 - Myapp] Uploading Myapp.apk onto device 'emulator-5554' 
[2013-04-07 17:01:54 - Myapp] Installing Myapp.apk... 
[2013-04-07 17:02:05 - Myapp] Success! 
[2013-04-07 17:02:05 - Myapp] Starting activity com.example.myapp.MainActivity on device emulator-5554

模拟器也启动。但它不打印HelloWorld。

enter image description here