ios 九宫格

#define kViewW 40     //宽度
#define kViewH 61     //高度
#define kColCount 4    //共几列

    CGFloat marginX = (self.view.bounds.size.width - kColCount * kViewW) / (kColCount + 1);
    CGFloat marginY = 0.5;

    for (int i = 0; i < self.payList.count; i++) {

        int row = i / kColCount;
        int col = i % kColCount;

        CGFloat x = marginX + col * (marginX + kViewW);
        CGFloat y = marginY + row * (marginY + kViewH);

        PayInfoView *payView = [PayInfoView payViewWithInfo:self.payList[i]];
        payView.delegate = self;
        payView.frame = CGRectMake(x, y, kViewW, kViewH);
        [self.view addSubview:payView];

    }