前言：
为视图绘制圆角，圆角可以选左上角、左下角、右下角、右上角、全部圆角
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//Core RaduiasUIView *actionView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:actionView.bounds byRoundingCorners:UIRectCornerTopRight | UIRectCornerBottomRight cornerRadii:CGSizeMake(20, 20)];CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];maskLayer.frame = actionView.bounds;maskLayer.path = maskPath.CGPath;actionView.layer.mask = maskLayer; |
UIRectCorner枚举值如下:
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typedef NS_OPTIONS(NSUInteger, UIRectCorner) { UIRectCornerTopLeft = 1 << 0, UIRectCornerTopRight = 1 << 1, UIRectCornerBottomLeft = 1 << 2, UIRectCornerBottomRight = 1 << 3, UIRectCornerAllCorners = ~0UL}; |
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