图像圆角半径只有左下角和右侧

Question

我想圆角半径只有底角左右。我已经做到了，但底部的形状看起来不像确切的圆，所以我怎么能解决这个问题

Answer 1

UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:self.imageView.bounds byRoundingCorners:(UIRectCornerBottomLeft | UIRectCornerBottomRight) cornerRadii:CGSizeMake(10.0, 10.0)]; 

CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init]; 
maskLayer.frame = self.imageView.bounds; 
maskLayer.path = maskPath.CGPath; 
self.imageView.layer.mask = maskLayer; 

Answer 2

我有同样的问题，我解决了它这样的：

- (void)setMaskTo:(UIView*)view { 
CAShapeLayer *rect = [[CAShapeLayer alloc] init]; 
[rect setFrame:CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height/2)]; 
rect.backgroundColor = ([UIColor grayColor]).CGColor; 

UIBezierPath *shape = [UIBezierPath bezierPathWithOvalInRect:CGRectMake(0,rect.frame.size.height/2,self.view.frame.size.width,self.view.frame.size.height/2)]; 
CAShapeLayer *shapeLayer = [CAShapeLayer layer]; 
shapeLayer.path = shape.CGPath; 
shapeLayer.fillColor = [UIColor grayColor].CGColor; 

CAShapeLayer *viewMask = [[CAShapeLayer alloc] init]; 
[viewMask addSublayer:shapeLayer]; 
[viewMask addSublayer:rect]; 

view.layer.mask = viewMask; 
}