1 /* 九宫格计算 */
 2 int totalCol = 5;//指定总列数
 3 
 4 CGFloat viewW = 50;//subview宽度
 5 CGFloat viewH = 50;//subview高度
 6 
 7 CGFloat marginX = (self.view.bounds.size.width-viewW*totalCol)/(totalCol+1);//计算横向空白间隙
 8 CGFloat marginY = marginX;//计算纵向空白间隙（和横向一致）
 9 
10 for (int i = 0; i<self.appList.count; i++) {//遍历plist中的view信息 一次在view中生成appview
11     
12     int col = i%totalCol;//计算appview所在的列
13     int row = i/totalCol;//计算appview所在的行
14     
15     CGFloat x = col*viewW+(col+1)*marginX;//计算appview的横坐标
16     CGFloat y = row*viewH+(row+1)*marginY;//计算appview的纵坐标
17     
18     UIView *appView = [[UIView alloc] initWithFrame:CGRectMake(x, y, viewW, viewH)];
19     appView.backgroundColor = [UIColor redColor];//设置appview
20     
21     [self.view addSubview:appView];//添加到view中
22 }
23 
24 /* 懒加载 */
25 -(NSArray *)appList
26 {
27 if (!appList) {
28     NSString *path = [[NSBundle mainBundle] pathForResource:@"app" ofType:@"plist"];
29     appList = [NSArray arrayWithContentsOfFile:path];//加载plist方法
30     NSLog(@"%@",appList);
31 }
32 return appList;
33 }