テキストの行数が少ないラベルがあり、行間の間隔を広げたいです。他の人からも同様の質問がありますが、解決策では私の問題は解決しません。また、私のラベルには段落が含まれる場合と含まれない場合があります。私は初めてSwift
です。ストーリーボードを使用した解決策はありますか?それともNSAttributedString
その可能性を通してのみ?
回答:
UILabel
次のスニペットを使用して、プログラムでLineSpacingをに追加します。
以前のSwiftバージョン
let attributedString = NSMutableAttributedString(string: "Your text")
// *** Create instance of `NSMutableParagraphStyle`
let paragraphStyle = NSMutableParagraphStyle()
// *** set LineSpacing property in points ***
paragraphStyle.lineSpacing = 2 // Whatever line spacing you want in points
// *** Apply attribute to string ***
attributedString.addAttribute(NSParagraphStyleAttributeName, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
// *** Set Attributed String to your label ***
label.attributedText = attributedString
Swift 4.0
let attributedString = NSMutableAttributedString(string: "Your text")
// *** Create instance of `NSMutableParagraphStyle`
let paragraphStyle = NSMutableParagraphStyle()
// *** set LineSpacing property in points ***
paragraphStyle.lineSpacing = 2 // Whatever line spacing you want in points
// *** Apply attribute to string ***
attributedString.addAttribute(NSAttributedStringKey.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
// *** Set Attributed String to your label ***
label.attributedText = attributedString
Swift 4.2
let attributedString = NSMutableAttributedString(string: "Your text")
// *** Create instance of `NSMutableParagraphStyle`
let paragraphStyle = NSMutableParagraphStyle()
// *** set LineSpacing property in points ***
paragraphStyle.lineSpacing = 2 // Whatever line spacing you want in points
// *** Apply attribute to string ***
attributedString.addAttribute(NSAttributedString.Key.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
// *** Set Attributed String to your label ***
label.attributedText = attributedString
NSMutableAttributedString
代わりにを使用する必要がありますNSAttributedString
。asnwerを更新しました。
NSMutableAttributedString
。使用することができますNSAttributedString(string: "Your text", attributes: [NSAttributedString.Key.paragraphStyle : paragraphStyle])
Interface Builderから:
プログラムで:
SWift 4&4.2
ラベル拡張子の使用
extension UILabel {
func setLineSpacing(lineSpacing: CGFloat = 0.0, lineHeightMultiple: CGFloat = 0.0) {
guard let labelText = self.text else { return }
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = lineSpacing
paragraphStyle.lineHeightMultiple = lineHeightMultiple
let attributedString:NSMutableAttributedString
if let labelattributedText = self.attributedText {
attributedString = NSMutableAttributedString(attributedString: labelattributedText)
} else {
attributedString = NSMutableAttributedString(string: labelText)
}
// (Swift 4.2 and above) Line spacing attribute
attributedString.addAttribute(NSAttributedString.Key.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
// (Swift 4.1 and 4.0) Line spacing attribute
attributedString.addAttribute(NSAttributedStringKey.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedString.length))
self.attributedText = attributedString
}
}
拡張関数を呼び出す
let label = UILabel()
let stringValue = "Set\nUILabel\nline\nspacing"
// Pass value for any one argument - lineSpacing or lineHeightMultiple
label.setLineSpacing(lineSpacing: 2.0) . // try values 1.0 to 5.0
// or try lineHeightMultiple
//label.setLineSpacing(lineHeightMultiple = 2.0) // try values 0.5 to 2.0
または、ラベルインスタンスを使用します(結果を確認するには、このコードをコピーして実行するだけです)
let label = UILabel()
let stringValue = "Set\nUILabel\nline\nspacing"
let attrString = NSMutableAttributedString(string: stringValue)
var style = NSMutableParagraphStyle()
style.lineSpacing = 24 // change line spacing between paragraph like 36 or 48
style.minimumLineHeight = 20 // change line spacing between each line like 30 or 40
// Line spacing attribute
attrString.addAttribute(NSAttributedStringKey.paragraphStyle, value: style, range: NSRange(location: 0, length: stringValue.characters.count))
// Character spacing attribute
attrString.addAttribute(NSAttributedStringKey.kern, value: 2, range: NSMakeRange(0, attrString.length))
label.attributedText = attrString
スウィフト3
let label = UILabel()
let stringValue = "Set\nUILabel\nline\nspacing"
let attrString = NSMutableAttributedString(string: stringValue)
var style = NSMutableParagraphStyle()
style.lineSpacing = 24 // change line spacing between paragraph like 36 or 48
style.minimumLineHeight = 20 // change line spacing between each line like 30 or 40
attrString.addAttribute(NSParagraphStyleAttributeName, value: style, range: NSRange(location: 0, length: stringValue.characters.count))
label.attributedText = attrString
Swift5.0の最近のソリューション
private extension UILabel {
// MARK: - spacingValue is spacing that you need
func addInterlineSpacing(spacingValue: CGFloat = 2) {
// MARK: - Check if there's any text
guard let textString = text else { return }
// MARK: - Create "NSMutableAttributedString" with your text
let attributedString = NSMutableAttributedString(string: textString)
// MARK: - Create instance of "NSMutableParagraphStyle"
let paragraphStyle = NSMutableParagraphStyle()
// MARK: - Actually adding spacing we need to ParagraphStyle
paragraphStyle.lineSpacing = spacingValue
// MARK: - Adding ParagraphStyle to your attributed String
attributedString.addAttribute(
.paragraphStyle,
value: paragraphStyle,
range: NSRange(location: 0, length: attributedString.length
))
// MARK: - Assign string that you've modified to current attributed Text
attributedText = attributedString
}
}
そして使用法:
let yourLabel = UILabel()
let yourText = "Hello \n world \n !"
yourLabel.text = yourText
yourLabel.addInterlineSpacing(spacingValue: 1.5)
UILabel.text
していない場合にのみ機能しますUILabel.attributedText
この再利用可能な拡張機能を使用できます。
extension String {
func lineSpaced(_ spacing: CGFloat) -> NSAttributedString {
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = spacing
let attributedString = NSAttributedString(string: self, attributes: [NSAttributedString.Key.paragraphStyle: paragraphStyle])
return attributedString
}
}
Swift4およびSwift5
extension NSAttributedString {
func withLineSpacing(_ spacing: CGFloat) -> NSAttributedString {
let attributedString = NSMutableAttributedString(attributedString: self)
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineBreakMode = .byTruncatingTail
paragraphStyle.lineSpacing = spacing
attributedString.addAttribute(.paragraphStyle,
value: paragraphStyle,
range: NSRange(location: 0, length: string.count))
return NSAttributedString(attributedString: attributedString)
}
}
使い方
let example = NSAttributedString(string: "This is Line 1 \nLine 2 \nLine 3 ").withLineSpacing(15)
testLabel.attributedText = example
Swift4のDipenの回答が更新されました
let attr = NSMutableAttributedString(string: today)
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = 2
attr.addAttribute(.paragraphStyle, value: paragraphStyle, range: NSMakeRange(0, attr.length))
label.attributedText = attr;
//Swift 4:
func set(text:String,
inLabel:UILabel,
withLineSpacing:CGFloat,
alignment:NSTextAlignment){
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineSpacing = withLineSpacing
let attrString = NSMutableAttributedString(string: text)
attrString.addAttribute(NSAttributedStringKey.paragraphStyle,
value:paragraphStyle,
range:NSMakeRange(0, attrString.length))
inLabel.attributedText = attrString
inLabel.textAlignment = alignment
}