我有一个自定义按钮,我想让它的左上边框看起来像普通的圆形矩形。
我找到了使所有角落成圆形的代码:
_myButton.layer.cornerRadius = 8;
_myButton.layer.borderWidth = 0.5;
_myButton.layer.borderColor = [UIColor grayColor].CGColor;
_myButton.clipsToBounds = YES;
如何修复代码以使其在左上角转动?
编辑:
_myButton.layer.borderWidth = 2;
_myButton.layer.borderColor = [UIColor blackColor].CGColor;
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:_myButton.bounds
byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight
cornerRadii:CGSizeMake(7.0, 7.0)];
CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init];
maskLayer.frame = _myButton.bounds;
maskLayer.path = maskPath.CGPath;
_myButton.layer.mask = maskLayer;
[maskLayer release];
此代码不起作用。整个按钮消失。
答案 0 :(得分:23)
你几乎得到了它,但是,在构建你的CAShapeLayer
之后,使用它将自己添加为按钮图层的子图层,而不是作为隐藏按钮某些部分的alpha蒙版(在这种情况下是角落) )。
UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(10,300,300,40);
[button setTitle:@"Hey" forState:(UIControlStateNormal)];
[button setTitleColor:[UIColor blueColor] forState:(UIControlStateNormal)];
UIBezierPath *shapePath = [UIBezierPath bezierPathWithRoundedRect:button.bounds
byRoundingCorners:UIRectCornerTopLeft | UIRectCornerTopRight
cornerRadii:CGSizeMake(7.0, 7.0)];
CAShapeLayer *shapeLayer = [CAShapeLayer layer];
shapeLayer.frame = button.bounds;
shapeLayer.path = shapePath.CGPath;
shapeLayer.fillColor = [UIColor clearColor].CGColor;
shapeLayer.strokeColor = [UIColor blackColor].CGColor;
shapeLayer.lineWidth = 2;
[button.layer addSublayer:shapeLayer];
[self.view addSubview:button];
答案 1 :(得分:1)
CAShapeLayer * positiveCorner = [CAShapeLayer layer];
positiveCorner.path = [UIBezierPath bezierPathWithRoundedRect: self.button.bounds
byRoundingCorners: UIRectCornerTopRight | UIRectCornerBottomRight
cornerRadii: (CGSize){5, 5}].CGPath;
self.button.layer.mask = positiveCorner;