Format UILabel dengan poin-poin?

Apakah mungkin untuk memformat textdalam a UILabeluntuk menunjukkan poin peluru ?

Jika ya, Bagaimana cara melakukannya?

Mungkin menggunakan titik kode Unicode untuk karakter poin dalam string Anda?

Tujuan-c

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

Cepat 4

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

tambahkan saja " • "

Bahkan saya mencari sesuatu seperti ini untuk saya textView. Apa yang saya lakukan, cukup tambahkan string di atas dengan string saya dan berikan ke saya textView, hal yang sama juga bisa dilakukan labels.

Saya menjawab ini untuk Penampil masa depan.

Ini solusi bagus dengan Swift

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)

Tambahkan atribut peluru

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
}

Inilah hasilnya:

Di Swift 4 saya telah menggunakan "•" dengan Baris baru

 @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"
  }

Keluaran:

Dalam 3.1 cepat

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

Lihat tautan ini, saya membuat tampilan Kustom untuk memformat teks dengan poin peluru / simbol / gambar lain (menggunakan properti atributText dari UILabel) sebagai simbol item daftar (Swift 3.0) https://github.com/akshaykumarboth/SymbolTextLabel-iOS- Cepat

 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

         } 
    }

Jika Anda ingin meratakan teks indentasi untuk bullet point juga, Anda bisa menggunakan metode berikut yang membangun a NSAttributedStringdengan properti indentasi dan spasi yang tepat:

- (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;
}

Dan Anda dapat menggunakan metode itu sebagai berikut, dengan meneruskan NSArraydengan teks dan asalkan Anda sudah memiliki UILabel:

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];

Iya. Salin dan tempel poin berikut: •Kompiler Swift dapat menafsirkan dan menampilkan poin seperti yang diinginkan dalam Xcode, tidak ada lagi yang diperlukan.

Penggunaan kembali

extension String {
    static var bullet: String {
        return "• "
    }
}


print(String.bullet + "Buy apples")
let secondPoint: String = .bullet + "Buy oranges"
print(secondPoint)

keluaran

• Buy apples
• Buy oranges

Array yang dapat digunakan kembali

extension Array where Element == String {

    var bulletList: String {
        var po = ""
        for (index, item) in self.enumerated() {
            if index != 0 {
                po += "\n"
            }
            po += .bullet + item
        }
        return po
    }
}


print(["get apples", "get oranges", "get a bannana"].bulletList)

keluaran

• get apples
• get oranges
• get a bannana

Jika ada yang mencari teks textview dengan poin-poin seperti saya, di bawah ini jawabannya. Omong-omong, ini hanya berfungsi untuk teks statis.

•   Better experience - Refer a friend and How to Play \n• Tournaments performance improvement\n• UI/UX Improvements\n• Critical bug fixes

Saya telah menetapkan teks di atas ke textview. Ini bekerja sebagaimana mestinya untuk saya.

Berikut solusi dari @krunal yang direfraktorisasi menjadi NSAttributedStringekstensi Swift 5 :

import UIKit

public extension NSAttributedString {
    static func makeBulletList(from strings: [String],
                               bulletCharacter: String = "\u{2022}",
                               bulletAttributes: [NSAttributedString.Key: Any] = [:],
                               textAttributes: [NSAttributedString.Key: Any] = [:],
                               indentation: CGFloat = 20,
                               lineSpacing: CGFloat = 1,
                               paragraphSpacing: CGFloat = 10) -> NSAttributedString
    {
        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.defaultTabInterval = indentation
        paragraphStyle.tabStops = [
            NSTextTab(textAlignment: .left, location: indentation)
        ]
        paragraphStyle.lineSpacing = lineSpacing
        paragraphStyle.paragraphSpacing = paragraphSpacing
        paragraphStyle.headIndent = indentation

        let bulletList = NSMutableAttributedString()

        for string in strings {
            let bulletItem = "\(bulletCharacter)\t\(string)\n"

            var attributes = textAttributes
            attributes[.paragraphStyle] = paragraphStyle

            let attributedString = NSMutableAttributedString(
                string: bulletItem, attributes: attributes
            )

            if !bulletAttributes.isEmpty {
                let bulletRange = (bulletItem as NSString).range(of: bulletCharacter)
                attributedString.addAttributes(bulletAttributes, range: bulletRange)
            }

            bulletList.append(attributedString)
        }

        if bulletList.string.hasSuffix("\n") {
            bulletList.deleteCharacters(
                in: NSRange(location: bulletList.length - 1, length: 1)
            )
        }

        return bulletList
    }
}