对 NSAttributedString 进行封装, 使用超方便

extension UILabel { convenience init(frame: CGRect = .zero, attributedText: String, textColor: UIColor, font: UIFont, lineSpacing: CGFloat) { self.init(frame: frame) let paragraphStyle = NSMutableParagraphStyle() paragraphStyle.lineSpacing = lineSpacing paragraphStyle.lineBreakMode = .byTruncatingTail let attrStr = NSAttributedString(string: attributedText, attributes: [NSParagraphStyleAttributeName: paragraphStyle, NSFontAttributeName: font, NSForegroundColorAttributeName: textColor]) self.attributedText = attrStr } }

这里我对NSAttributedString的所有属性都进行了简单的封装, 让开发者使用起来超方便

项目地址如果你喜欢的话, 欢迎 star

使用方法如下:

// 1. shadow: you can set range, default allRange label1.attributedText = content.toAttributed.shadow { $0.shadowColor = UIColor.red $0.shadowOffset = CGSize(width: 3, height: 3) $0.shadowBlurRadius = 2.0 }.rawValue // 2. paragraphStyle: you can set range, default allRange label2.attributedText = content.toAttributed.paragraph { $0.alignment = .center $0.lineSpacing = 8.0 }.rawValue // 3. underLine: you can set range, default allRange label3.attributedText = content.toAttributed.underLine(style: [.styleDouble, .patternDot], color: UIColor.red).rawValue // 4. font, foregroundColor textField.attributedPlaceholder = "Please enter the phone number".toAttributed.font(.systemFont(ofSize: 15)) .foregroundColor(.red).rawValue // 5. Even you can do it label6.attributedText = content.toAttributed .underLine(style: [.styleSingle, .patternDot], color: .red, range: NSMakeRange(0, 5)) .font(.systemFont(ofSize: 18), range: NSMakeRange(5, 5)) .backgroundColor(.blue, range: NSMakeRange(10, 5)) .foregroundColor(.purple, range: NSMakeRange(15, 5)) .baselineOffset(value: 5, range: NSMakeRange(20, 5)) .obliqueness(angle: 0.5, range: NSMakeRange(25, 5)) .kern(padding: 0.3, range: NSMakeRange(30, 5)) .expansion(value: 0.3, range: NSMakeRange(35, 5)) .stroke(color: .green, width: 3, range: NSMakeRange(40, 5)) .textEffect(range: NSMakeRange(50, 5)) .shadow{ $0.shadowColor = UIColor.red $0.shadowOffset = CGSize(width: 3, height: 3) $0.shadowBlurRadius = 2.0 }.rawValue

1 条回复

wgziOS

2017-06-20 10:51:27 +08:00

很厉害的样子，还在学 swift，看不懂