public class ActivityDemo extends Activity {  

    private static final String TAG = "ActivityDemo";  

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);  

        Log.e(TAG, "start onCreate~~~");

    }  

    @Override

    protected void onStart() {

        super.onStart();

        Log.e(TAG, "start onStart~~~");

    }  

    @Override

    protected void onRestart() {

        super.onRestart();

        Log.e(TAG, "start onRestart~~~");

    }  

    @Override

    protected void onResume() {

        super.onResume();

        Log.e(TAG, "start onResume~~~");

    }  

    @Override

    protected void onPause() {

        super.onPause();

        Log.e(TAG, "start onPause~~~");

    }  

    @Override

    protected void onStop() {

        super.onStop();

        Log.e(TAG, "start onStop~~~");

    }  

    @Override

    protected void onDestroy() {

        super.onDestroy();

        Log.e(TAG, "start onDestroy~~~");

    }  

}