/**
   * 入口方法
   *
   * @param savedInstanceState Bundle对象
   */
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // 设置屏幕恒为纵向
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

    // 获得屏幕分辨率
    dm = new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(dm);

    SystemData.setCurrentComponentLevel(clevel);
    pauseb.setActionListener(new PauseListener());
    clevel.add(pauseb);
    pauseb.setVisible(true);
  }
  /**
   * 设置相应操作
   *
   * @param x x坐标
   * @param y y坐标
   * @param z z坐标
   */
  public void act(float x, float y, float z) {

    final int n = 10;
    final int m = 40;
    x2 = x2 - (int) x * n;
    y2 = y2 + (int) y * n;
    if (x2 <= 0) {
      x2 = 0;
    }
    if (y2 <= 0) {
      y2 = 0;
    }
    if (x2 >= dm.widthPixels - m) {
      x2 = dm.widthPixels - m;
    }
    if (y2 >= dm.heightPixels - m) {
      y2 = dm.heightPixels - m;
    }
    pauseb.setX(x2);
    pauseb.setY(y2);
  }