• The frame property contains the frame rectangle, which specifies the size and location of the view in its superview’s coordinate system.

frame是指定父视图的位置和大小的

  • The bounds property contains the bounds rectangle, which specifies the size of the view (and its content origin) in the view’s own local coordinate system.

  • bounds是指定当前视图的大小和位置的
  • The center property contains the known center point of the view in the superview’s coordinate system.

  • center是指定在父视图的坐标系统中视图的中心位置

其他博客的一些看法

然后呢 看一下frame、bounds跟center三者的定义描述

frame:描述当前视图在其父视图中的位置和大小

bounds:描述当前视图在其自身坐标系统中的位置和大小。

center:描述当前视图的中心点在其父视图中的位置。

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