如何在UILabel中嵌入小图标

我需要UILabel在iOS7中嵌入一​​些小图标（某种自定义项目符号）。如何在界面设计器中执行此操作？或至少在代码中？

在Android中有leftDrawable和rightDrawable用于标签，但是在iOS中如何实现？android中的示例：

您可以使用iOS 7的文本附件（属于TextKit的一部分）来执行此操作。一些示例代码：

NSTextAttachment *attachment = [[NSTextAttachment alloc] init];
attachment.image = [UIImage imageNamed:@"MyIcon.png"];

NSAttributedString *attachmentString = [NSAttributedString attributedStringWithAttachment:attachment];

NSMutableAttributedString *myString= [[NSMutableAttributedString alloc] initWithString:@"My label text"];
[myString appendAttributedString:attachmentString];

myLabel.attributedText = myString;

这是在UILabel中嵌入图标的方法。

另外要对齐图标，请使用attachment.bounds

迅捷5.1

// Create Attachment
let imageAttachment = NSTextAttachment()
imageAttachment.image = UIImage(named:"iPhoneIcon")
// Set bound to reposition
let imageOffsetY: CGFloat = -5.0
imageAttachment.bounds = CGRect(x: 0, y: imageOffsetY, width: imageAttachment.image!.size.width, height: imageAttachment.image!.size.height)
// Create string with attachment
let attachmentString = NSAttributedString(attachment: imageAttachment)
// Initialize mutable string
let completeText = NSMutableAttributedString(string: "")
// Add image to mutable string
completeText.append(attachmentString)
// Add your text to mutable string
let textAfterIcon = NSAttributedString(string: "Using attachment.bounds!")
completeText.append(textAfterIcon)
self.mobileLabel.textAlignment = .center
self.mobileLabel.attributedText = completeText

Objective-C版本

NSTextAttachment *imageAttachment = [[NSTextAttachment alloc] init];
imageAttachment.image = [UIImage imageNamed:@"iPhoneIcon"];
CGFloat imageOffsetY = -5.0;
imageAttachment.bounds = CGRectMake(0, imageOffsetY, imageAttachment.image.size.width, imageAttachment.image.size.height);
NSAttributedString *attachmentString = [NSAttributedString attributedStringWithAttachment:imageAttachment];
NSMutableAttributedString *completeText = [[NSMutableAttributedString alloc] initWithString:@""];
[completeText appendAttributedString:attachmentString];
NSAttributedString *textAfterIcon = [[NSAttributedString alloc] initWithString:@"Using attachment.bounds!"];
[completeText appendAttributedString:textAfterIcon];
self.mobileLabel.textAlignment = NSTextAlignmentRight;
self.mobileLabel.attributedText = completeText;

Swift 4.2：

let attachment = NSTextAttachment()        
attachment.image = UIImage(named: "yourIcon.png")
let attachmentString = NSAttributedString(attachment: attachment)
let myString = NSMutableAttributedString(string: price)
myString.append(attachmentString)
label.attributedText = myString

您的参考图像看起来像一个按钮。尝试（也可以在Interface Builder中完成）：

UIButton* button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setFrame:CGRectMake(50, 50, 100, 44)];
[button setImage:[UIImage imageNamed:@"img"] forState:UIControlStateNormal];
[button setImageEdgeInsets:UIEdgeInsetsMake(0, -30, 0, 0)];
[button setTitle:@"Abc" forState:UIControlStateNormal];
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setBackgroundColor:[UIColor yellowColor]];
[view addSubview:button];

Swift 3版本

let attachment = NSTextAttachment()
attachment.image = UIImage(named: "plus")
attachment.bounds = CGRect(x: 0, y: 0, width: 10, height: 10)
let attachmentStr = NSAttributedString(attachment: attachment)
let myString = NSMutableAttributedString(string: "")
myString.append(attachmentStr)
let myString1 = NSMutableAttributedString(string: "My label text")
myString.append(myString1)
lbl.attributedText = myString

UILabel扩展

extension UILabel {

    func set(text:String, leftIcon: UIImage? = nil, rightIcon: UIImage? = nil) {

        let leftAttachment = NSTextAttachment()
        leftAttachment.image = leftIcon
        leftAttachment.bounds = CGRect(x: 0, y: -2.5, width: 20, height: 20)
        if let leftIcon = leftIcon {
            leftAttachment.bounds = CGRect(x: 0, y: -2.5, width: leftIcon.size.width, height: leftIcon.size.height)
        }
        let leftAttachmentStr = NSAttributedString(attachment: leftAttachment)

        let myString = NSMutableAttributedString(string: "")

        let rightAttachment = NSTextAttachment()
        rightAttachment.image = rightIcon
        rightAttachment.bounds = CGRect(x: 0, y: -5, width: 20, height: 20)
        let rightAttachmentStr = NSAttributedString(attachment: rightAttachment)


        if semanticContentAttribute == .forceRightToLeft {
            if rightIcon != nil {
                myString.append(rightAttachmentStr)
                myString.append(NSAttributedString(string: " "))
            }
            myString.append(NSAttributedString(string: text))
            if leftIcon != nil {
                myString.append(NSAttributedString(string: " "))
                myString.append(leftAttachmentStr)
            }
        } else {
            if leftIcon != nil {
                myString.append(leftAttachmentStr)
                myString.append(NSAttributedString(string: " "))
            }
            myString.append(NSAttributedString(string: text))
            if rightIcon != nil {
                myString.append(NSAttributedString(string: " "))
                myString.append(rightAttachmentStr)
            }
        }
        attributedText = myString
    }
}

我已经在这里快速实现了此功能：https : //github.com/anatoliyv/SMIconLabel

代码尽可能简单：

var labelLeft = SMIconLabel(frame: CGRectMake(10, 10, view.frame.size.width - 20, 20))
labelLeft.text = "Icon on the left, text on the left"

// Here is the magic
labelLeft.icon = UIImage(named: "Bell") // Set icon image
labelLeft.iconPadding = 5               // Set padding between icon and label
labelLeft.numberOfLines = 0             // Required
labelLeft.iconPosition = SMIconLabelPosition.Left // Icon position
view.addSubview(labelLeft)

外观如下：

Swift 4 UIlabel Extension参考以上答案将图像添加到标签

extension UILabel {
  func set(image: UIImage, with text: String) {
    let attachment = NSTextAttachment()
    attachment.image = image
    attachment.bounds = CGRect(x: 0, y: 0, width: 10, height: 10)
    let attachmentStr = NSAttributedString(attachment: attachment)

    let mutableAttributedString = NSMutableAttributedString()
    mutableAttributedString.append(attachmentStr)

    let textString = NSAttributedString(string: text, attributes: [.font: self.font])
    mutableAttributedString.append(textString)

    self.attributedText = mutableAttributedString
  }
}

Swift 2.0版本：

//Get image and set it's size
let image = UIImage(named: "imageNameWithHeart")
let newSize = CGSize(width: 10, height: 10)

//Resize image
UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
image?.drawInRect(CGRectMake(0, 0, newSize.width, newSize.height))
let imageResized = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()

//Create attachment text with image
var attachment = NSTextAttachment()
attachment.image = imageResized
var attachmentString = NSAttributedString(attachment: attachment)
var myString = NSMutableAttributedString(string: "I love swift ")
myString.appendAttributedString(attachmentString)
myLabel.attributedText = myString

尝试将a拖动UIView到IB的屏幕上。从那里，您可以将UIImageView和拖到UILabel刚创建的视图中。UIImageView在属性检查器中将的图像设置为自定义项目符号图像（必须将其拖动到导航窗格中才能添加到项目中），然后可以在标签中写入一些文本。

尝试这种方式...

  self.lbl.text=@"Drawble Left";
    UIImageView *img=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 20, 20)];
    img.image=[UIImage imageNamed:@"Star.png"];
    [self.lbl addSubview:img];

Swift 5 Easy Way Just CopyPaste并更改您想要的内容

let fullString = NSMutableAttributedString(string:"To start messaging contacts who have Talklo, tap ")

 // create our NSTextAttachment
let image1Attachment = NSTextAttachment() 
image1Attachment.image = UIImage(named: "chatEmoji")
image1Attachment.bounds = CGRect(x: 0, y: -8, width: 25, height: 25)

// wrap the attachment in its own attributed string so we can append it
let image1String = NSAttributedString(attachment: image1Attachment)

 // add the NSTextAttachment wrapper to our full string, then add some more text.

 fullString.append(image1String)
 fullString.append(NSAttributedString(string:" at the right bottom of your screen"))

 // draw the result in a label
 self.lblsearching.attributedText = fullString

您可以将UITextField与leftView属性一起使用，然后将该enabled属性设置为NO

或使用UIButton和setImage:forControlState

在Swift 2.0中，

我对这个问题的解决方案是这个问题的几个答案的组合。我在@Phil的答案中遇到的问题是我无法更改图标的位置，并且它始终出现在右上角。来自@anatoliy_v的一个答案是，我无法调整要附加到字符串的图标大小。

为了使它对我pod 'SMIconLabel'有用，我首先做了一个，然后创建了这个函数：

func drawTextWithIcon(labelName: SMIconLabel, imageName: String, labelText: String!,  width: Int, height: Int) {

        let newSize = CGSize(width: width, height: height)
        let image = UIImage(named: imageName)
        UIGraphicsBeginImageContextWithOptions(newSize, false, 0.0)
        image?.drawInRect(CGRectMake(0, 0, newSize.width, newSize.height))
        let imageResized = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        labelName.text = " \(labelText)"
        labelName.icon = imageResized
        labelName.iconPosition = .Left
    }

该解决方案不仅可以帮助您放置图像，还可以使您对图标大小和其他属性进行必要的更改。

谢谢。

Swift 3 UILabel扩展

提示：如果需要在图像和文本之间留一些空间，则只需在labelText之前使用一两个空间。

extension UILabel {
    func addIconToLabel(imageName: String, labelText: String, bounds_x: Double, bounds_y: Double, boundsWidth: Double, boundsHeight: Double) {
        let attachment = NSTextAttachment()
        attachment.image = UIImage(named: imageName)
        attachment.bounds = CGRect(x: bounds_x, y: bounds_y, width: boundsWidth, height: boundsHeight)
        let attachmentStr = NSAttributedString(attachment: attachment)
        let string = NSMutableAttributedString(string: "")
        string.append(attachmentStr)
        let string2 = NSMutableAttributedString(string: labelText)
        string.append(string2)
        self.attributedText = string
    }
}

 func atributedLabel(str: String, img: UIImage)->NSMutableAttributedString
{   let iconsSize = CGRect(x: 0, y: -2, width: 16, height: 16)
    let attributedString = NSMutableAttributedString()
    let attachment = NSTextAttachment()
    attachment.image = img
    attachment.bounds = iconsSize
    attributedString.append(NSAttributedString(attachment: attachment))
    attributedString.append(NSAttributedString(string: str))

    return attributedString
} 

您可以使用此功能向标签添加图像或小图标

您必须在使用UIView和的地方制作一个自定义对象，并在其中放置UIImageView和UILabel