设置UI控件的Layer属性(边框可见，边框颜色，边框宽度，边框圆角)

设置UI控件的Layer属性 #import "ViewController.h" @interface ViewController () @property (strong, nonatomic) IBOutlet UIButton *btnSave; @property (strong, nonatomic) IBOutlet UIView *yellowView; @end @i

>>阅读原文<<