iOS 利用for循环创建九宫格

 // 利用for循环创建九宫格
 - (void)createScratchableLatex{

     //    总列数
     int totalColumns = ;
     //    每一格的尺寸
     CGFloat cellW = (self.frame.size.width-)/totalColumns;
     CGFloat cellH = ;
     //    竖直间隙
     CGFloat verticalMargin = ;
     //    水平间隙
     CGFloat transverseMargin = ;

     //    根据格子个数创建对应的框框
     for(int index = ; index< ; index++) {
         UIView *cellView = [[UIView alloc ]init ];
         cellView.backgroundColor = [UIColor redColor];
         int row = index / totalColumns;
         int col = index % totalColumns;
         CGFloat cellX = verticalMargin + col * (cellW + verticalMargin);
         CGFloat cellY = row * (cellH + transverseMargin);
         cellView.frame = CGRectMake(cellX, cellY, cellW, cellH);
         [self addSubview:cellView];

     }

 }