iOS 让view圆角虚线边框

UIBezierPath *maskPath=[[UIBezierPath bezierPathWithRoundedRect:view.bounds byRoundingCorners:UIRectCornerAllCorners cornerRadii:CGSizeMake(10, 10)] bezierPathByReversingPath];

CAShapeLayer *border = [CAShapeLayer layer];

// 线条颜色

border.strokeColor = [UIColor hexStringToColor:@"#999999"].CGColor;

border.masksToBounds = YES;

border.fillColor = nil;

border.path = maskPath.CGPath;

border.frame = view.bounds;

border.lineWidth = 1;

border.lineCap = @"square";

// 第一个是 线条长度 第二个是间距 nil时为实线

border.lineDashPattern = @[@6, @4];

[view.layer addSublayer:border];