关于UIView的autoresizingMask属性的研究

来源：互联网发布：绵阳长虹网络公司地址编辑：程序博客网时间：2024/04/27 01:44

UIView中有个属性是autoresizingMask，该属性是用来控制控件的自适应。

UIViewAutoresizingNone = 0,
UIViewAutoresizingFlexibleLeftMargin = 1 << 0,
UIViewAutoresizingFlexibleWidth = 1 << 1,
UIViewAutoresizingFlexibleRightMargin = 1 << 2,
UIViewAutoresizingFlexibleTopMargin = 1 << 3,
UIViewAutoresizingFlexibleHeight = 1 << 4,
UIViewAutoresizingFlexibleBottomMargin = 1 << 5

UIViewAutoresizingNone：控件相对于父视图坐标值不变；

UIViewAutoresizingFlexibleWidth：控件的宽度随着父视图的宽度按比例改变；

例如：label宽度为100，屏幕的宽度为320。当屏幕宽度为480时，label宽度变为100*480/320

UIViewAutoresizingFlexibleHeight：与UIViewAutoresizingFlexibleWidth相同

UIViewAutoresizingFlexibleLeftMargin：到屏幕左边的距离随着父视图的宽度按比例改变；

例如：CGRectMake(50, 100, 200, 40)]; 当屏幕的宽度为320，x为50；当屏幕宽度为480时，labelx坐标变为 50*480/320。控件坐标变为 CGRectMake(75, 100, 200, 40)];

UIViewAutoresizingFlexibleRightMargin、UIViewAutoresizingFlexibleTopMargin、UIViewAutoresizingFlexibleBottomMargin与UIViewAutoresizingFlexibleLeftMargin类似