supersr--九宫格公式(根据多少行多少列排版)

- (void)layoutSubviews{

[super layoutSubviews];

NSUInteger count = self.subviews.count;

NSInteger maxC = 3;

CGFloat childViewWH = (SCREENW - 2 * MARGIN) / maxC;

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

// 拿到子控件调整位置

UIView *view = self.subviews[i];

view.size = CGSizeMake(childViewWH, childViewWH);

// 求出其在第几行第几列

NSInteger col = i % maxC;

NSInteger row = i / maxC;

if (view.x == 0 && view.y == 0) {

view.x = col * (childViewWH + MARGIN);

view.y = row * (childViewWH + MARGIN);

}else{

[UIView animateWithDuration:0.25 animations:^{

view.x = col * (childViewWH + MARGIN);

view.y = row * (childViewWH + MARGIN);

}];

}

}

}