iOS 开发总结(1)--UIView圆角设置

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首先new一个view:

UIView *view = [[UIViewalloc] initWithFrame:CGRectMake(100,80, 80, 80)];

view.backgroundColor = [UIColorgreenColor];

[self.viewaddSubview:view];

1. 设置4个角全为圆角:

view.layer.cornerRadius = 5.0f;

2.设置view的下面两个角为圆角:

UIBezierPath *maskPath = [UIBezierPathbezierPathWithRoundedRect:view.boundsbyRoundingCorners:UIRectCornerBottomLeft |UIRectCornerBottomRight cornerRadii:CGSizeMake(5,5)];

CAShapeLayer *maskLayer = [[CAShapeLayeralloc] init];

maskLayer.frame = view.bounds;

maskLayer.path = maskPath.CGPath;

view.layer.mask = maskLayer;

3.总结:

UIRectCorner 类型如下所示:

typedefNS_OPTIONS(NSUInteger, UIRectCorner) {

UIRectCornerTopLeft =1 << 0,

UIRectCornerTopRight =1 << 1,

UIRectCornerBottomLeft = 1 << 2,

UIRectCornerBottomRight = 1 << 3,

UIRectCornerAllCorners = ~0UL

};

使用UIBezierPath通过" | "操作组合来实现设置需要的角为圆角即可

byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight

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