该代码是用object-c写的小程序打飞机，用UI实现程序的图形界面设计，简单的有敌机下降，飞机左右移动发送子弹摧毁敌机。-The code is hit with object-c plane to write small programs with UI design to achieve the program s graphical interface, simply have the enemy down and move around the aircraft sent to des