简单view的圆角

代码
yourView.layer.cornerRadius = 5
[yourView.layer setMasksToBounds:YES]
view的部分圆角问题

代码
UIView *view2 = [[UIView alloc] initWithFrame:CGRectMake(120, 10, 80, 80)]
view2.backgroundColor = [UIColor redColor]
[self.view addSubview:view2]
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:view2.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii:CGSizeMake(10, 10)]
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init]
maskLayer.frame = view2.bounds
maskLayer.path = maskPath.CGPath
view2.layer.mask = maskLayer
//其中,
byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight
//指定了需要成为圆角的角。该参数是UIRectCorner类型的,可选的值有:
* UIRectCornerTopLeft
* UIRectCornerTopRight
* UIRectCornerBottomLeft
* UIRectCornerBottomRight
* UIRectCornerAllCorners