This Android app, named "Play Ball", offers a dynamic and interactive experience where a ball moves according to the user's touch or the device's gravity sensor. Users can customize the ball's size and color, and switch between touch and gravity mode. The app ensures persistence by saving the last state, including the ball's position, size, and color, so everything is as you left it when you reopen the app. It's a simple yet engaging application.

这款名为 "Play Ball" 的安卓应用提供了一个动态互动的体验，小球可以根据用户的触摸或设备的重力传感器移动。用户可以自定义小球的大小和颜色，并且可以在触摸模式和重力模式之间切换。应用通过保存上次的状态，包括小球的位置、大小和颜色，确保持久性，这样当你重新打开应用时，一切都和你离开时一样。这是一个简单而又引人入胜的应用。