摘要：
boundsPropertyThe bounds rectangle, which describes the view’s location and size in its own coordinate system.bounds 矩形使用视图本身的坐标系统来的描述视图的位置和大小Declarat... 阅读全文
摘要：
Configuring the Bounds and Frame RectanglesframePropertyThe frame rectangle, which describes the view’s location and size in its superview’s coordinat... 阅读全文