安卓简单小游戏。本科毕业论文。通过控制底部挡板的左右运动，使上方运动中的小球不掉落出画面外。一次游戏三次机会进行计分。-Andrews simple game. Undergraduate thesis. By controlling the movement of the left and right bottom of the bezel, so that the top of the movement of the ball does not fall outside the screen