周围的UIView虚线边框周围的UIView虚线边框(Dashed line border arou

如何添加虚线边框UIView 。

这样的事情

Answer 1:

您可以使用层和贝塞尔曲线像下面的例子这种模式设置边框。

Objective-C的

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];

雨燕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)

您也可以使用图形图象像下面的例子设置不同类型的设计。

[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

在这里，你已经添加<QuartzCore/QuartzCore>框架项目，并在下面一行导入YourViewController.m文件。

#import <QuartzCore/QuartzCore.h>

Answer 2:

另一种方法，如果你喜欢子层。 在您的自定义视图的init，把这个（_border是伊娃）：

_border = [CAShapeLayer layer];
_border.strokeColor = [UIColor colorWithRed:67/255.0f green:37/255.0f blue:83/255.0f alpha:1].CGColor;
_border.fillColor = nil;
_border.lineDashPattern = @[@4, @2];
[self.layer addSublayer:_border];

而在你layoutsubviews，把这个：

_border.path = [UIBezierPath bezierPathWithRect:self.bounds].CGPath;
_border.frame = self.bounds;

Answer 3:

对于那些你在斯威夫特工作，在此的UIView类扩展更容易。 这是基于sunshineDev的答案。

extension UIView {
  func addDashedBorder() {
    let color = UIColor.red.cgColor

    let shapeLayer:CAShapeLayer = CAShapeLayer()
    let frameSize = self.frame.size
    let shapeRect = CGRect(x: 0, y: 0, width: frameSize.width, height: frameSize.height)

    shapeLayer.bounds = shapeRect
    shapeLayer.position = CGPoint(x: frameSize.width/2, y: frameSize.height/2)
    shapeLayer.fillColor = UIColor.clear.cgColor
    shapeLayer.strokeColor = color
    shapeLayer.lineWidth = 2
    shapeLayer.lineJoin = kCALineJoinRound
    shapeLayer.lineDashPattern = [6,3]
    shapeLayer.path = UIBezierPath(roundedRect: shapeRect, cornerRadius: 5).cgPath

    self.layer.addSublayer(shapeLayer)
    }
}

要使用它：

anyView.addDashedBorder()

Answer 4:

建立在什么·普拉萨德·G有建议我创建了下面的一个UIImage额外类中的方法：

- (CAShapeLayer *) addDashedBorderWithColor: (CGColorRef) color {
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];

    CGSize frameSize = self.size;

    CGRect shapeRect = CGRectMake(0.0f, 0.0f, frameSize.width, frameSize.height);
    [shapeLayer setBounds:shapeRect];
    [shapeLayer setPosition:CGPointMake( frameSize.width/2,frameSize.height/2)];

    [shapeLayer setFillColor:[[UIColor clearColor] CGColor]];
    [shapeLayer setStrokeColor:color];
    [shapeLayer setLineWidth:5.0f];
    [shapeLayer setLineJoin:kCALineJoinRound];
    [shapeLayer setLineDashPattern:
     [NSArray arrayWithObjects:[NSNumber numberWithInt:10],
      [NSNumber numberWithInt:5],
      nil]];
    UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:shapeRect cornerRadius:15.0];
    [shapeLayer setPath:path.CGPath];

    return shapeLayer;
}

要指出的是，如果你定义为（0,0）的形状的位置，边框的右下角将被放置在图像的中心是非常重要的，这就是为什么我把它设置为：（frameSize.width / 2，框架尺寸.height / 2）

然后我用我的方法来获得使用我的UIImageView的UIImage的虚线框，并添加CAShapeLayer为的UIImageView层的一个子层：

[myImageView.layer addSublayer:[myImageView.image addDashedBorderWithColor:[[UIColor whiteColor] CGColor]]];

Answer 5:

使用CGContextSetLineDash（）方法。

CGFloat dashPattern[]= {3.0, 2};

context =UIGraphicsGetCurrentContext();
CGContextSetRGBStrokeColor(context, 1.0, 1.0, 1.0, 1.0);
// And draw with a blue fill color
CGContextSetRGBFillColor(context, 0.0, 0.0, 1.0, 1.0);
// Draw them with a 2.0 stroke width so they are a bit more visible.
CGContextSetLineWidth(context, 4.0);
CGContextSetLineDash(context, 0.0, dashPattern, 2);

CGContextAddRect(context, self.bounds);

// Close the path
CGContextClosePath(context);

CGContextStrokePath(context);

// Fill & stroke the path
CGContextDrawPath(context, kCGPathFillStroke);

我认为这将是对你有所帮助。

Answer 6:

斯威夫特3：

import UIKit

class UIViewWithDashedLineBorder: UIView {

    override func draw(_ rect: CGRect) {

        let path = UIBezierPath(roundedRect: rect, cornerRadius: 0)

        UIColor.purple.setFill()
        path.fill()

        UIColor.orange.setStroke()
        path.lineWidth = 5

        let dashPattern : [CGFloat] = [10, 4]
        path.setLineDash(dashPattern, count: 2, phase: 0)
        path.stroke()
    }
}

使用在故事板（如自定义类），或直接在代码：

let v = UIViewWithDashedLineBorder(frame: CGRect(x: 0, y: 0, width: 100, height: 100))

结果：

Answer 7:

为此，您需要添加CAShapeLayer针对特定对象

 CAShapeLayer * dotborder = [CAShapeLayer layer];
    dotborder.strokeColor = [UIColor redColor].CGColor;//your own color
    dotborder.fillColor = nil;
    dotborder.lineDashPattern = @[@4, @2];//your own patten 
    [codeBtn.layer addSublayer:dotborder];
    dotborder.path = [UIBezierPath bezierPathWithRect:codeBtn.bounds].CGPath;
    dotborder.frame = codeBtn.bounds;

Answer 8:

在斯威夫特3

let border = CAShapeLayer();
border.strokeColor = UIColor.black.cgColor;
border.fillColor = nil;
border.lineDashPattern = [4, 4];
border.path = UIBezierPath(rect: theView.bounds).cgPath
border.frame = theView.bounds;
theView.layer.addSublayer(border);

Answer 9:

斯威夫特版本QuartzCore答案。

import QuartzCore    

let dottedPattern = UIImage(named: "dottedPattern")
myView.layer.borderWidth = 1
myView.layer.borderColor = UIColor(patternImage: dottedPattern!).CGColor

该CAShapeLayer方法工作，但QuartzCore方法是在处理表视图重装更好，如果UIView是一个细胞内。

对于图像，你可以使用这样的事情（这是非常小的）：

我倾向于更喜欢PNG图像载体的时候，我可以逃脱它：

• 在草图中，创建一个4×4像素的矩形。
• 做一个总的这四个
• 他们组成四角，交替的颜色
• 导出组为PDF
• 在Images.xcassets ，创建一个New Image Set称为dottedPattern
• 更改Scale Factors以Single Vector
• 拖放在您的PDF

Answer 10:

对于Xamarin.iOS虚线/虚线边框。

        dottedLayer = new CAShapeLayer();
        dottedLayer.StrokeColor = UIColor.FromRGB(202, 202, 208).CGColor; 
        dottedLayer.FillColor = null;
        dottedLayer.LineDashPattern = new[] { new NSNumber(4), new NSNumber(2) };

        dottedLayer.Path = UIBezierPath.FromRect(YourView.Bounds).CGPath; //for square
        dottedLayer.Path = UIBezierPath.FromRoundedRect(YourView.Bounds, 5).CGPath; //for rounded corners

        dottedLayer.Frame = YourView.Bounds;
        YourView.Layer.AddSublayer(dottedLayer);

Answer 11:

这是，如果你在斯威夫特2想让它

func addDashedLineBorderWithColor(color:UIColor) {
    let _ = self.sublayers?.filter({$0.name == "DashedBorder"}).map({$0.removeFromSuperlayer()})
    let  border = CAShapeLayer();
    border.name = "DashedBorder"
    border.strokeColor = color.CGColor;
    border.fillColor = nil;
    border.lineDashPattern = [4, 4];
    border.path = UIBezierPath(rect: self.bounds).CGPath
    border.frame = self.bounds;
    self.addSublayer(border);

}

Answer 12:

尝试娄代码

- (void)drawRect:(CGRect)rect {
    //// Color Declarations
    UIColor* fillColor = [UIColor colorWithRed: 1 green: 1 blue: 1 alpha: 1];
    UIColor* strokeColor = [UIColor colorWithRed: 0.29 green: 0.565 blue: 0.886 alpha: 1];

    //// Rectangle Drawing
    UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRoundedRect:rect cornerRadius: 6];
    [fillColor setFill];
    [rectanglePath fill];
    [strokeColor setStroke];
    rectanglePath.lineWidth = 1;
    CGFloat rectanglePattern[] = {6, 2, 6, 2};
    [rectanglePath setLineDash: rectanglePattern count: 4 phase: 0];
    [rectanglePath stroke];
    [super drawRect:rect];
}

对于一个像波纹管

Answer 13:

最后我用一些@克里斯实施创造了IB设计性：

CurvedDashedBorderUIVIew.h：

#import <UIKit/UIKit.h>

IB_DESIGNABLE
@interface CurvedDashedBorderUIVIew : UIView

@property (nonatomic) IBInspectable CGFloat cornerRadius;
@property (nonatomic) IBInspectable UIColor *borderColor;
@property (nonatomic) IBInspectable int dashPaintedSize;
@property (nonatomic) IBInspectable int dashUnpaintedSize;

@property (strong, nonatomic) CAShapeLayer *border;

@end

CurvedDashedBorderUIVIew.m：

#import "CurvedDashedBorderUIVIew.h"

@implementation CurvedDashedBorderUIVIew

- (instancetype)init
{
    self = [super init];
    if (self) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithCoder:(NSCoder *)coder
{
    self = [super initWithCoder:coder];
    if (self) {
        [self setup];
    }
    return self;
}

- (instancetype)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        [self setup];
    }
    return self;
}

-(void)setup
{
    _border = [CAShapeLayer layer];
    [self.layer addSublayer:_border];
}

-(void)layoutSubviews {
    [super layoutSubviews];
    self.layer.cornerRadius = self.cornerRadius;

    _border.strokeColor = self.borderColor.CGColor;
    _border.fillColor = nil;
    _border.lineDashPattern = @[[NSNumber numberWithInt:_dashPaintedSize],
                                [NSNumber numberWithInt:_dashUnpaintedSize]];
    _border.path = [UIBezierPath bezierPathWithRoundedRect:self.bounds cornerRadius:self.cornerRadius].CGPath;
    _border.frame = self.bounds;
}

@end

然后设置好它在厦门国际银行/分镜：

Answer 14:

与自定义类迅速解决与自动布局工作

从@Iain史密斯定制

class DashedBorderView: UIView {

    @IBInspectable var cornerRadius: CGFloat = 4
    @IBInspectable var borderColor: UIColor = UIColor.black
    @IBInspectable var dashPaintedSize: Int = 2
    @IBInspectable var dashUnpaintedSize: Int = 2

    let dashedBorder = CAShapeLayer()

    override init(frame: CGRect) {
        super.init(frame: frame)
        commonInit()
    }

    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        commonInit()
    }

    private func commonInit() {
        //custom initialization
        self.layer.addSublayer(dashedBorder)
        applyDashBorder()
    }

    override func layoutSublayers(of layer: CALayer) {
        super.layoutSublayers(of: layer)
        applyDashBorder()
    }

    func applyDashBorder() {
        dashedBorder.strokeColor = borderColor.cgColor
        dashedBorder.lineDashPattern = [NSNumber(value: dashPaintedSize), NSNumber(value: dashUnpaintedSize)]
        dashedBorder.fillColor = nil
        dashedBorder.cornerRadius = cornerRadius
        dashedBorder.path = UIBezierPath(rect: self.bounds).cgPath
        dashedBorder.frame = self.bounds
    }
}

Answer 15:

你可以简单地创建这样一个IBDesignable类：

import UIKit

@IBDesignable
class BorderedView: UIView {

    @IBInspectable var cornerRadius: CGFloat = 0

    @IBInspectable var borderWidth: CGFloat = 0

    @IBInspectable var borderColor: UIColor = UIColor.clear

    override func draw(_ rect: CGRect) {
        let path = UIBezierPath(roundedRect: rect, cornerRadius: cornerRadius)
        path.lineWidth = borderWidth

        borderColor.setStroke()

        let dashPattern : [CGFloat] = [10, 4]
        path.setLineDash(dashPattern, count: 2, phase: 0)
        path.stroke()
    }

}

然后，只要继承与Xcode中BorderedView你的看法。 这样，您就可以从界面生成器很容易设置边框颜色和边框宽度！

Answer 16:

在SWIFT 4我创建了一个UIView的扩展与以下功能：

func borderDash(withRadius cornerRadius: Float, borderWidth: Float, borderColor: UIColor, dashSize: Int) {
    let currentFrame = self.bounds
    let shapeLayer = CAShapeLayer()
    let path = CGMutablePath()
    let radius = CGFloat(cornerRadius)

    // Points - Eight points that define the round border. Each border is defined by two points.
    let topLeftPoint = CGPoint(x: radius, y: 0)
    let topRightPoint = CGPoint(x: currentFrame.size.width - radius, y: 0)
    let middleRightTopPoint = CGPoint(x: currentFrame.size.width, y: radius)
    let middleRightBottomPoint = CGPoint(x: currentFrame.size.width, y: currentFrame.size.height - radius)
    let bottomRightPoint = CGPoint(x: currentFrame.size.width - radius, y: currentFrame.size.height)
    let bottomLeftPoint = CGPoint(x: radius, y: currentFrame.size.height)
    let middleLeftBottomPoint = CGPoint(x: 0, y: currentFrame.size.height - radius)
    let middleLeftTopPoint = CGPoint(x: 0, y: radius)

    // Points - Four points that are the center of the corners borders.
    let cornerTopRightCenter = CGPoint(x: currentFrame.size.width - radius, y: radius)
    let cornerBottomRightCenter = CGPoint(x: currentFrame.size.width - radius, y: currentFrame.size.height - radius)
    let cornerBottomLeftCenter = CGPoint(x: radius, y: currentFrame.size.height - radius)
    let cornerTopLeftCenter = CGPoint(x: radius, y: radius)

    // Angles - The corner radius angles.
    let topRightStartAngle = CGFloat(Double.pi * 3 / 2)
    let topRightEndAngle = CGFloat(0)
    let bottomRightStartAngle = CGFloat(0)
    let bottmRightEndAngle = CGFloat(Double.pi / 2)
    let bottomLeftStartAngle = CGFloat(Double.pi / 2)
    let bottomLeftEndAngle = CGFloat(Double.pi)
    let topLeftStartAngle = CGFloat(Double.pi)
    let topLeftEndAngle = CGFloat(Double.pi * 3 / 2)

    // Drawing a border around a view.
    path.move(to: topLeftPoint)
    path.addLine(to: topRightPoint)
    path.addArc(center: cornerTopRightCenter,
                radius: radius,
                startAngle: topRightStartAngle,
                endAngle: topRightEndAngle,
                clockwise: false)
    path.addLine(to: middleRightBottomPoint)
    path.addArc(center: cornerBottomRightCenter,
                radius: radius,
                startAngle: bottomRightStartAngle,
                endAngle: bottmRightEndAngle,
                clockwise: false)
    path.addLine(to: bottomLeftPoint)
    path.addArc(center: cornerBottomLeftCenter,
                radius: radius,
                startAngle: bottomLeftStartAngle,
                endAngle: bottomLeftEndAngle,
                clockwise: false)
    path.addLine(to: middleLeftTopPoint)
    path.addArc(center: cornerTopLeftCenter,
                radius: radius,
                startAngle: topLeftStartAngle,
                endAngle: topLeftEndAngle,
                clockwise: false)

    // Path is set as the shapeLayer object's path.
    shapeLayer.path = path;
    shapeLayer.backgroundColor = UIColor.clear.cgColor
    shapeLayer.frame = currentFrame
    shapeLayer.masksToBounds = false
    shapeLayer.setValue(0, forKey: "isCircle")
    shapeLayer.fillColor = UIColor.clear.cgColor
    shapeLayer.strokeColor = borderColor.cgColor
    shapeLayer.lineWidth = CGFloat(borderWidth)
    shapeLayer.lineDashPattern = [NSNumber(value: dashSize), NSNumber(value: dashSize)]
    shapeLayer.lineCap = kCALineCapRound

    self.layer.addSublayer(shapeLayer)
    self.layer.cornerRadius = radius;
}

Answer 17:

extension UIView{
func addDashedLineBorder() {
    let color = UIColor.black.cgColor

    let shapeLayer:CAShapeLayer = CAShapeLayer()
    let frameSize = (self.frame.size)
    let shapeRect = CGRect(x: 0, y: 0, width: self.frame.width, height: self.frame.height)

    shapeLayer.bounds = shapeRect
    shapeLayer.position = CGPoint(x: frameSize.width/2, y: frameSize.height/2)
    shapeLayer.fillColor = UIColor.clear.cgColor
    shapeLayer.strokeColor = color
    shapeLayer.lineWidth = 1
    shapeLayer.lineJoin = kCALineJoinRound
    shapeLayer.lineDashPattern = [2,2]
    shapeLayer.path = UIBezierPath(rect: shapeRect).cgPath

    self.layer.addSublayer(shapeLayer)
}

}并调用viewDidLoad中（）与延迟这个功能：

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) { 
            // Your code with delay
            self.YourView.addDashedBorder()
        }

Answer 18:

如果你想这与cornerRadius工作，那么试试这个

tagView.clipsToBounds = YES;
tagView.layer.cornerRadius = 20.0f;
tagView.backgroundColor = [UIColor groupTableViewBackgroundColor];

CAShapeLayer *yourViewBorder = [CAShapeLayer layer];
yourViewBorder.strokeColor = [UIColor blackColor].CGColor;
yourViewBorder.fillColor = nil;
yourViewBorder.lineDashPattern = @[@2, @2];
yourViewBorder.frame = tagView.bounds;

// Create the path for to make circle
UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:tagView.bounds
                                               byRoundingCorners:UIRectCornerAllCorners
                                                     cornerRadii:CGSizeMake(20, 20)];


yourViewBorder.path = maskPath.CGPath;

[tagView.layer addSublayer:yourViewBorder];

Answer 19:

雨燕4.3

基于关rmooney的回答是一个UIView扩展与已设置的默认值配置参数。

注意：如果该视图有这不起作用self.translatesAutoresizingMaskIntoConstraints = false

extension UIView {
  func addDashedBorder(_ color: UIColor = UIColor.black, withWidth width: CGFloat = 2, cornerRadius: CGFloat = 5, dashPattern: [NSNumber] = [3,6]) {

    let shapeLayer:CAShapeLayer = CAShapeLayer()

    shapeLayer.bounds = self.bounds
    shapeLayer.position = CGPoint(x: self.frame.width/2, y: self.frame.height/2)
    shapeLayer.fillColor = nil
    shapeLayer.strokeColor = color.cgColor
    shapeLayer.lineWidth = width
    shapeLayer.lineJoin = CAShapeLayerLineJoin.round // Updated in swift 4.3
    shapeLayer.lineDashPattern = dashPattern
    shapeLayer.path = UIBezierPath(roundedRect: self.frame, cornerRadius: cornerRadius).cgPath

    self.layer.addSublayer(shapeLayer)
  }
}

文章来源: Dashed line border around UIView