更改UIImageview形状矩形的默认形状

Question

现在我正在开发一个项目，我需要显示具有如下形状边框的图像。

我怎样才能做到这一点？我不知道这样做。请任何想法解决。

Answer 1

这里是你如何可以遮蔽创建路径：

- (UIBezierPath *)curvedRectWithFrame:(CGRect)frame radius:(CGFloat)radius 
{ 
    double halfFrameHeight = ((double)frame.size.height/2); 

    // Check if the radius is too small. 
    if (radius < halfFrameHeight) { 
     radius = halfFrameHeight; 
    } 

    CGFloat arcAngle = asin(halfFrameHeight/radius); 
    CGFloat centerX = frame.origin.x + (frame.size.width - radius); 
    CGFloat centerY = frame.origin.y + halfFrameHeight; 

    UIBezierPath *path = [UIBezierPath bezierPath]; 

    [path moveToPoint:frame.origin]; 
    [path addLineToPoint:CGPointMake(centerX + radius * cos(arcAngle), frame.origin.y)]; 
    [path addArcWithCenter:CGPointMake(centerX, centerY) radius:radius startAngle:-arcAngle endAngle:arcAngle clockwise:YES]; 
    [path addLineToPoint:CGPointMake(frame.origin.x, path.currentPoint.y)]; 
    [path closePath]; 

    return path; 
} 

那么你可以申请形状面膜你的形象：

const CGFloat kCurveRadius = 500.; 

CAShapeLayer *maskLayer = [[CAShapeLayer alloc] init]; 
maskLayer.frame = yourImageView.bounds; 
maskLayer.path = [self curvedRectWithFrame:maskLayer.bounds radius:kCurveRadius].CGPath; 

yourImageView.layer.mask = maskLayer; 

Answer 2

可能是这样的代码将帮助你...

UIBezierPath *maskPath; 
maskPath = [UIBezierPath bezierPathWithRoundedRect:YourImageVIew.bounds byRoundingCorners:(UIRectCornerTopRight | UIRectCornerBottomRight) cornerRadii:CGSizeMake(50.0, 50.0)]; 

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