如何设置隐藏Android应用的标题栏和状态栏

@Override
public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    final Window win = getWindow();
    // No Statusbar
    win.setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
    WindowManager.LayoutParams.FLAG_FULLSCREEN);

    // No Titlebar
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    setContentView(R.layout.mylayout);
}