iOS 计算Scrollview滚动百分比

iOS 计算获取Scrollview (tableView、collectionView) 滚动百分比

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    CGFloat x = scrollview.contentOffset.x;

    CGFloat y = scrollview.contentOffset.y;

    CGFloat width = scrollview.contentSize.width;

    CGFloat height = scrollview.contentSize.height;

    CGFloat superVWidth = scrollview.superview.frame.size.width;

    CGFloat superVHeight = scrollview.superview.frame.size.height;

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//已滚动所占百分比 - 竖直滚动方向

int yInt = (y+superVHeight)/height ; // + superVHeight为已显示的内容高度，否则为滑动的高度

//已滚动所占百分比 - 水平滚动方向

int xInt = (x+superVWidth)/width; //同理