UIView周围的虚线边界 [英] Dashed line border around UIView
本文介绍了UIView周围的虚线边界的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在 UIView
周围添加虚线边框。
How do I add dashed line border around UIView
.
像这样的东西
推荐答案
您可以使用Layer和Bezier路径设置此模式的边框,如下例所示。
You can set the border with this pattern using Layer and Bezier path like below examples.
Objective-C
CAShapeLayer *yourViewBorder = [CAShapeLayer layer];
yourViewBorder.strokeColor = [UIColor blackColor].CGColor;
yourViewBorder.fillColor = nil;
yourViewBorder.lineDashPattern = @[@2, @2];
yourViewBorder.frame = yourView.bounds;
yourViewBorder.path = [UIBezierPath bezierPathWithRect:yourView.bounds].CGPath;
[yourView.layer addSublayer:yourViewBorder];
Swift 3.1
var yourViewBorder = CAShapeLayer()
yourViewBorder.strokeColor = UIColor.black.cgColor
yourViewBorder.lineDashPattern = [2, 2]
yourViewBorder.frame = yourView.bounds
yourViewBorder.fillColor = nil
yourViewBorder.path = UIBezierPath(rect: yourView.bounds).cgPath
yourView.layer.addSublayer(yourViewBorder)
您还可以使用模式图像设置不同类型的设计,如下例所示。
You can also set different types of design using pattern image like below example.
[yourView.layer setBorderWidth:5.0];
[yourView.layer setBorderColor:[[UIColor colorWithPatternImage:[UIImage imageNamed:@"DotedImage.png"]] CGColor]];///just add image name and create image with dashed or doted drawing and add here
这里你要添加< QuartzCore / QuartzCore>
项目中的框架,并在 YourViewController.m
文件中用以下行导入。
Here you've to add <QuartzCore/QuartzCore>
framework in the project and import it with below line in YourViewController.m
file.
#import <QuartzCore/QuartzCore.h>
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