#import<QuartzCore/QuartzCore.h>
添加代碼
view爲要設置的button、imageview、view等等
// 邊框
view.layer.borderColor = [[UIColor lightGrayColor] CGColor];
view.layer.borderWidth = 1;
// 圓角
view.layer.cornerRadius = 14;
view.layer.masksToBounds = YES;