标签的一部分可点击并同时加粗

Question

import Foundation
import UIKit

extension NSMutableAttributedString {
    @discardableResult
    public func setAsLink(textToFind: NSMutableAttributedString, linkURL: String) -> Bool {
        let foundRange = self.mutableString.range(of: textToFind)
        if foundRange.location != NSNotFound {
            self.addAttribute(NSLinkAttributeName, value: linkURL, range: foundRange)
            return true
        }
        return false
    }
}

@IBDesignable
class SignUpLabel: UILabel {
    override func layoutSubviews() {
        super.layoutSubviews()
        let normalText = "Don't have an account yet? "
        let normalString = NSMutableAttributedString(string: normalText)
        let boldText  = "Sign up now!"
        let attrs = [NSFontAttributeName : UIFont.boldSystemFont(ofSize: 14)]
        let attributedString = NSMutableAttributedString(string: boldText, attributes: attrs)
        normalString.append(attributedString)
        self.attributedText = normalString
        normalString.setAsLink(textToFind: attributedString, linkURL: "http://www.someaddress.com")
    }
}

let foundRange = self.mutableString.range(of: textToFind)需要字符串，但我已将其声明为 NSMutableAttributedString，因此我能够为标签的特定部分添加权重。

我想不通。有人可以帮我修复吗？我真的很感激。

Answer 1

NSMutableAttributedString有一个名为string的属性。要访问它并允许搜索，请使用yourMutableAttributedString.string作为参数。