how to set cornerRadius for only bottom-left,bottom-right and top-left corner of a UIView?

Question

Is there a way to set cornerRadius for only bottom-left,bottom-right and top-left corner of a UIView?

I tried the following, but it ended up making the view disappea

Answer 1

I know it's very late, but i just create one method where you can pass only one or multiple UIRectCorners.

  [self setMaskTo:myView byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight)];

- (void)setMaskTo:(UIView*)view byRoundingCorners:(UIRectCorner)corners
        {
            UIBezierPath *rounded = [UIBezierPath bezierPathWithRoundedRect:view.bounds
                                                          byRoundingCorners:corners
                                                                cornerRadii:CGSizeMake(8.0, 8.0)];
            CAShapeLayer *shape = [[CAShapeLayer alloc] init];
            [shape setPath:rounded.CGPath];
            view.layer.mask = shape;
    }

Answer 2

UIBezierPath *maskPath;
maskPath = [UIBezierPath bezierPathWithRoundedRect:someView.bounds 
                             byRoundingCorners:(UIRectCornerTopLeft|UIRectCornerTopRight|UIRectCornerBottomLeft|UIRectCornerBottomRight) 
                                   cornerRadii:CGSizeMake(10.0,10.0,5.0, 10.0)];


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

Answer 3

Setting corner-radius for a view in Swift

The creation and masking of layers should run inside the optional drawRect() block inherited from UIView

    override func drawRect(rect: CGRect) {
        super.drawRect(rect)

        let maskPath = UIBezierPath(roundedRect: self.view.bounds, byRoundingCorners: [.TopLeft, .BottomLeft, .BottomRight], cornerRadii: CGSizeMake(10, 10))
        let maskLayer = CAShapeLayer()
        maskLayer.frame = self.view.bounds
        maskLayer.path  = maskPath.CGPath
        self.view.layer.mask = maskLayer
    }

Answer 4

Try this code

-(void)setMaskTo:(UIView*)view byRoundingCorners:(UIRectCorner)corners {
    UIBezierPath* rounded = [UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:corners cornerRadii:CGSizeMake(10.0, 10.0)];
    CAShapeLayer* shape = [[CAShapeLayer alloc] init];
    [shape setPath:rounded.CGPath];
    view.layer.mask = shape;
}

call using

[self setMaskTo:myView byRoundingCorners:UIRectCornerTopLeft|UIRectCornerTopRight];

Available options:

UIRectCornerTopLeft, UIRectCornerTopRight,UIRectCornerBottomLeft,UIRectCornerBottomRight,UIRectCornerAllCorners

Answer 5

Use a custom UIView and Implement the below code

#import "CustomUIView.h"

@implementation CustomView

- (void)drawRect:(CGRect)rect
{
    // Drawing code
    CAShapeLayer * maskLayer = [CAShapeLayer layer];
    maskLayer.path = [UIBezierPath bezierPathWithRoundedRect: self.bounds byRoundingCorners: UIRectCornerTopLeft | UIRectCornerBottomLeft | UIRectCornerBottomRight cornerRadii: (CGSize){20.0, 20.0}].CGPath;

    self.layer.mask = maskLayer;
}

@end

Output:

Look at the UIBezierPath.h options :

typedef NS_OPTIONS(NSUInteger, UIRectCorner) {
    UIRectCornerTopLeft     = 1 << 0,
    UIRectCornerTopRight    = 1 << 1,
    UIRectCornerBottomLeft  = 1 << 2,
    UIRectCornerBottomRight = 1 << 3,
    UIRectCornerAllCorners  = ~0UL
};

Answer 6

hope this will help you

your above code running perfectly on my machine , may be you set CAShapeLayer frame equal to your view frame due to which your view will disappear but i am not seeing this line in your code ,so please check your view property and apply below code

  UIBezierPath *maskPath;
    maskPath = [UIBezierPath bezierPathWithRoundedRect:viewName.bounds
                                     byRoundingCorners:(UIRectCornerBottomLeft | UIRectCornerBottomRight |UIRectCornerTopLeft)
                                           cornerRadii:CGSizeMake(20.0, 20.0)];
    CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
    maskLayer.frame =viewName.bounds; 
    maskLayer.path = maskPath.CGPath;
   viewName.layer.mask = maskLayer;