http://stackoverflow.com/questions/5361369/uiview-frame-bounds-and-center Since the question I asked has been seen many times I will provide a detailed answer of it. Feel free to modify it if you want to add more correct content. First a recap on the…
frame:指的是视图在父视图的坐标系统中的大小和位置. bound:指的是视图在试图本身的坐标系统中的大小(位置起点是原点). center:指的是视图在父视图坐标系统中的中心点. 贴张苹果官网的图: frame和bound的关系 下面这是其中一个发生变化,其余两个的变化,直接看吧,很浅显. Although you can change the frame, bounds, and center properties independent of the others, change…