1.九宫格布局为主题区和底部菜单区 2.将一张240*320的图片设置为背景图 3.根据屏幕宽高计算出各图标的位置，然后绘制各图标。-1. Jiugongge the theme of the layout area and the bottom of the menu area 2. Will be a 240* 320 images set to the background in Figure 3. According to the screen width and heigh