使用前导入框架AVFoundation
- (void)viewDidLoad {
[super viewDidLoad];
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];
view.backgroundColor = [UIColor redColor];
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:UIRectCornerAllCorners cornerRadii:view.bounds.size];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc]init];
maskLayer.frame = view.bounds;
maskLayer.path = maskPath.CGPath;
view.layer.mask = maskLayer;
[self.view addSubview:view];
}
