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箇条書きでUILabelをフォーマットしますか？

textのUILabelをフォーマットして箇条書きを表示することは可能ですか？

もしそうなら、どうすればいいですか？

iosobjective-cswiftuilabelbullet
84
Rob

おそらく、文字列の箇条書き文字にUnicodeコードポイントを使用しますか？

Objective-c

myLabel.text = @"\u2022 This is a list item!";

Swift 4

myLabel.text = "\u{2022} This is a list item!"
150
Chris Doble

" • "を追加するだけです

textViewでこのようなものを探していました。私がやったことは、上記の文字列を私の文字列に追加してtextViewに渡すだけです。labelsについても同じことができます。

将来のViewerでこれに答えました。

78
Zac24

Swiftでの素敵なソリューションはこちら

let label = UILabel()
label.frame = CGRect(x: 40, y: 100, width: 280, height: 600)
label.textColor = UIColor.lightGray
label.numberOfLines = 0

let arrayString = [
    "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
    "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.",
    "Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.",
    "Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
]

label.attributedText = add(stringList: arrayString, font: label.font, bullet: "")

self.view.addSubview(label)

箇条書き属性を追加する

func add(stringList: [String],
         font: UIFont,
         bullet: String = "\u{2022}",
         indentation: CGFloat = 20,
         lineSpacing: CGFloat = 2,
         paragraphSpacing: CGFloat = 12,
         textColor: UIColor = .gray,
         bulletColor: UIColor = .red) -> NSAttributedString {

    let textAttributes: [NSAttributedStringKey: Any] = [NSAttributedStringKey.font: font, NSAttributedStringKey.foregroundColor: textColor]
    let bulletAttributes: [NSAttributedStringKey: Any] = [NSAttributedStringKey.font: font, NSAttributedStringKey.foregroundColor: bulletColor]

    let paragraphStyle = NSMutableParagraphStyle()
    let nonOptions = [NSTextTab.OptionKey: Any]()
    paragraphStyle.tabStops = [
        NSTextTab(textAlignment: .left, location: indentation, options: nonOptions)]
    paragraphStyle.defaultTabInterval = indentation
    //paragraphStyle.firstLineHeadIndent = 0
    //paragraphStyle.headIndent = 20
    //paragraphStyle.tailIndent = 1
    paragraphStyle.lineSpacing = lineSpacing
    paragraphStyle.paragraphSpacing = paragraphSpacing
    paragraphStyle.headIndent = indentation

    let bulletList = NSMutableAttributedString()
    for string in stringList {
        let formattedString = "\(bullet)\t\(string)\n"
        let attributedString = NSMutableAttributedString(string: formattedString)

        attributedString.addAttributes(
            [NSAttributedStringKey.paragraphStyle : paragraphStyle],
            range: NSMakeRange(0, attributedString.length))

        attributedString.addAttributes(
            textAttributes,
            range: NSMakeRange(0, attributedString.length))

        let string:NSString = NSString(string: formattedString)
        let rangeForBullet:NSRange = string.range(of: bullet)
        attributedString.addAttributes(bulletAttributes, range: rangeForBullet)
        bulletList.append(attributedString)
    }

    return bulletList
}

結果は次のとおりです。

enter image description here

31
Krunal

In Swift 3.1

lblItemName.text = "\u{2022} This is a list item!"
7
Daxesh Nagar

Swift 4では、新しい行で「•」を使用しました

 @IBOutlet weak var bulletLabel: UILabel!
 let arrayOfLines = ["Eat Egg for protein","You should Eat Ghee","Wheat is with high fiber","Avoid to eat Fish "]
 for value in arrayOfLines {
     bulletLabel.text = bulletLabel.text!  + " • " + value + "\n"
  }

出力：

enter image description here

6
Jack

このリンクをチェックして、カスタムビューを作成して、箇条書き/その他のシンボル/画像（UILabelのattributeTextプロパティを使用）をリストアイテムシンボルとしてフォーマットします（Swift 3.0） https://github.com/akshaykumarboth/ SymbolTextLabel-iOS-Swift

 import UIKit

    class ViewController: UIViewController {

    @IBOutlet var symbolView: SymbolTextLabel!

    var testString = "Understanding the concept of sales"

    var bulletSymbol = "\u{2022}" 
    var fontsize: CGFloat= 18
    override func viewDidLoad() {

        super.viewDidLoad()
         //First way // Dynamically creating SymbolTextLabel object

        let symbolTextLabel = SymbolTextLabel(frame: CGRect(x: 0, y: 0, width: 0, height: 0))

        symbolTextLabel.setText(text: testString, symbolCode: bulletSymbol) //setting text and symbol of text item

        symbolTextLabel.setFontSize(textSize: fontsize) // setting font size

        //symbolTextLabel.setSpacing(spacing: 5) // setting space between symbol and text

        self.view.addSubview(symbolTextLabel) 
//second way // from storyboard or interface builder

     symbolView.setText(text: testString, symbolCode: bulletSymbol)
 //setting text and symbol of text item 

    symbolView.setFontSize(textSize: fontsize) // setting font size

        //symbolView.setSpacing(spacing: 5) // setting space between symbol and text

         } 
    }
3
Akshay Kumar Both

箇条書きのテキストのインデントも揃えたい場合は、次のメソッドを使用して、適切なインデントと間隔のプロパティでNSAttributedStringを作成できます。

- (NSAttributedString *)attributedStringForBulletTexts:(NSArray *)stringList
                                              withFont:(UIFont *)font
                                          bulletString:(NSString *)bullet
                                           indentation:(CGFloat)indentation
                                           lineSpacing:(CGFloat)lineSpacing
                                      paragraphSpacing:(CGFloat)paragraphSpacing
                                             textColor:(UIColor *)textColor
                                           bulletColor:(UIColor *)bulletColor {

    NSDictionary *textAttributes = @{NSFontAttributeName: font,
                                 NSForegroundColorAttributeName: textColor};
    NSDictionary *bulletAttributes = @{NSFontAttributeName: font, NSForegroundColorAttributeName: bulletColor};

    NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
    paragraphStyle.tabStops = @[[[NSTextTab alloc] initWithTextAlignment: NSTextAlignmentLeft location:indentation options:@{}]];
    paragraphStyle.defaultTabInterval = indentation;
    paragraphStyle.lineSpacing = lineSpacing;
    paragraphStyle.paragraphSpacing = paragraphSpacing;
    paragraphStyle.headIndent = indentation;

    NSMutableAttributedString *bulletList = [NSMutableAttributedString new];

    for (NSString *string in stringList) {
        NSString *formattedString = [NSString stringWithFormat:@"%@\t%@\n", bullet, string];
        NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:formattedString];
        if (string == stringList.lastObject) {
            paragraphStyle = [paragraphStyle mutableCopy];
            paragraphStyle.paragraphSpacing = 0;
        }
        [attributedString addAttributes:@{NSParagraphStyleAttributeName: paragraphStyle} range:NSMakeRange(0, attributedString.length)];
        [attributedString addAttributes:textAttributes range:NSMakeRange(0, attributedString.length)];

        NSRange rangeForBullet = [formattedString rangeOfString:bullet];
        [attributedString addAttributes:bulletAttributes range:rangeForBullet];
        [bulletList appendAttributedString:attributedString];
    }

    return bulletList;
}

そして、テキストとともにNSArrayを渡し、既にUILabelを持っていることを提供することにより、次のようにそのメソッドを使用できます：

NSArray *stringArray = @[@"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
                         @"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.",
                         @"Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.",
                         @"Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum."
                         ];

label.attributedText = [self attributedStringForBulletTexts:stringArray
                                                   withFont:label.font
                                               bulletString:@"•"
                                                indentation:15
                                                lineSpacing:2
                                           paragraphSpacing:10
                                                  textColor:UIColor.blackColor
                                                bulletColor:UIColor.grayColor];
2
Jonathan Cabrera