如何在 SwiftUI 中创建超链接

How to make hyperlinks in SwiftUI

在Swift中,如图所示,您可以使用"NSMutableAttributedString"在文本中嵌入链接。

如何使用 SwiftUI 实现此目的?

我按如下方式实现了它,但这看起来并不像我想要的那样。 .

import SwiftUI

struct ContentView: View {
    var body: some View {
        HStack {
            Text("By tapping Done, you agree to the ")
            Button(action: {}) {
                Text("privacy policy")
            }
            Text(" and ")
            Button(action: {}) {
                Text("terms of service")
            }
            Text(" .")
        }
    }
}

Motjaba Hosseni 是正确的,到目前为止在 SwiftUI 中没有任何类似于 NSAttributedString 的东西。 这应该可以暂时解决您的问题:

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack {
            Text("By tapping Done, you agree to the ")
            HStack(spacing: 0) {
                Button("privacy policy") {}
                Text(" and ")
                Button("terms of service") {}
                Text(".")
            }
        }
    }
}

UIViewRepresentable 中包装 UIKit 视图始终是一个选项。只需通过手动过程公开您要更改的每个属性。

struct AttributedText: UIViewRepresentable {
    var attributedText: NSAttributedString

    init(_ attributedText: NSAttributedString) {
        self.attributedText = attributedText
    }

    func makeUIView(context: Context) -> UITextView {
        return UITextView()
    }

    func updateUIView(_ label: UITextView, context: Context) {
        label.attributedText = attributedText
    }
}

//usage: AttributedText(NSAttributedString())

使用内置函数+,看起来很有魅力:

import SwiftUI

struct ContentView: View {
    var body: some View {
        HStack {
            Button(action: {

            }) {
                Text("By tapping Done, you agree to the ")
              + Text("privacy policy")
                  .foregroundColor(Color.blue)
              + Text(" and ")
              + Text("terms of service")
                  .foregroundColor(Color.blue)
              + Text(".")
            }
            .foregroundColor(Color.black)
        }
    }
}

我知道有点晚了,但我使用 HTML 解决了同样的问题。 首先我创建了一个小助手和 link 模型。

struct HTMLStringView: UIViewRepresentable {
  let htmlContent: String

  func makeUIView(context: Context) -> WKWebView {
    return WKWebView()
  }

  func updateUIView(_ uiView: WKWebView, context: Context) {
    uiView.loadHTMLString(htmlContent, baseURL: nil)
  }
}

struct TextLink {
    let url: URL
    let title: String
}

接下来,我创建了将 String 更改为 HTML 并将第一次出现的 @link 替换为我的可点击 link.

的函数
var content = "My string with @link."
var link = TextLink(url: URL(string: "https://www.facebook.com")!, title: "Facebook")
var body: some View {
    let bodySize = UIFont.preferredFont(forTextStyle: UIFont.TextStyle.body).pointSize
    var html = "<span style=\"font: -apple-system-body; font-size:calc(\(bodySize)px + 1.0vw)\">"

    if let linkRange = content.range(of: "@link") {
        let startText = content[content.startIndex ..< linkRange.lowerBound]
        let endText = content[linkRange.upperBound ..< content.endIndex]
        html += startText
        html += "<a href=\"\(link.url.absoluteString)\">\(link.title)</a>"
        html += endText
    } else {
        html += content
    }
    
    html += "</span>"
    
    return HTMLStringView(htmlContent: html)
}

iOS 15+ (Swift 5.5 +)

SwiftUI 内置支持渲染 Markdown

要创建 link,请将 link 文本括在方括号中(例如,[Duck Duck Go]),然后紧跟在括号中的 URL(例如, (https://duckduckgo.com)).

My favorite search engine is [Duck Duck Go](https://duckduckgo.com).

https://www.markdownguide.org/basic-syntax/#links

字符串变量

  1. 使用init(_ value: String)

Creates a localized string key from the given string value.

let link = "[Duck Duck Go](https://duckduckgo.com)"
Text(.init(link))

属性文本

  1. 使用init(_ attributedContent: AttributedString)

Creates a text view that displays styled attributed content.

let markdownLink = try! AttributedString(markdown: "[Duck Duck Go](https://duckduckgo.com)")
Text(markdownLink)

类似问题:


使用Link视图

A control for navigating to a URL.

https://developer.apple.com/documentation/swiftui/link

Link("Privacy Policy", destination: URL(string: "https://example.com")!)

正如@mahan 提到的那样,通过使用降价语言,这非常适用于 iOS 15.0 及更高版本:

Text("[Privacy Policy](https://example.com)")

但是如果您使用的是 String 变量,并将其放入 Text 中,它将无法工作。示例:

let privacyPolicyText = "Read our [Privacy Policy](https://example.com) here."
Text(privacyPolicyText) // Will not work

使用字符串变量的解决方案

原因是Text得到了多次启迪。那么我们如何解决这个问题呢?最简单的方法就是:

let privacyPolicyText = "Read our [Privacy Policy](https://example.com) here."
Text(.init(privacyPolicyText))

结果:阅读我们的 Privacy Policy 此处。

使用 LocalizedStringKey 非常简单,例如:

let message = "Hello, www.google.com this is just testing for hyperlinks, check this out our website https://www.apple.in thank you."

Text(LocalizedStringKey(message))

我尝试在中间使用 Link 连接文本,这些是 iOS 15+ 及以下 iOS 15.

    if #available(iOS 15, *) {
        
        Text("[Seperate Link 1 ](https://www.android.com/intl/en_in/)")
            .font(.caption)
            .foregroundColor(Color.green)
        // green color is not applied.

        Text("[Seperate Link 2 ](https://www.apple.com/in/)")
            .font(.caption)
            .accentColor(Color.green)
        // green is applied.
        
        Text("By authorizing you agree
our ")
            .font(.caption)
            .foregroundColor(Color.black)
        + Text("[Terms and Conditions](https://www.android.com/intl/en_in/)")
            .font(.caption)
            .foregroundColor(Color.green) // default blue is applied
        + Text(" and ")
            .font(.caption)
            .foregroundColor(Color.black)
        + Text("[Privacy Policy](https://www.apple.com/in/)")
            .font(.caption)
            .foregroundColor(Color.green) // default blue
        // cannot use accentColor(Color.green) here
    }
    else{
        // lower iOS versions.
        VStack{
            Text("By authorizing you agree our ")
                .font(.caption)
                .foregroundColor(Color.black)
            
            HStack(spacing: 4 ) {
                Text("Terms and Conditions")
                    .font(.caption)
                    .foregroundColor(Color.green)
                    .onTapGesture {
                        let url = URL.init(string: "https://www.android.com/intl/en_in/")
                        guard let termsAndConditionURL = url, UIApplication.shared.canOpenURL(termsAndConditionURL) else { return }
                        UIApplication.shared.open(termsAndConditionURL)
                    }
                Text("and")
                    .font(.caption)
                    .foregroundColor(Color.black)
                Text("Privacy Policy")
                    .font(.caption)
                    .foregroundColor(Color.green)
                    .onTapGesture {
                        let url = URL.init(string: "https://www.apple.com/in/")
                        guard let privacyPolicyURL = url, UIApplication.shared.canOpenURL(privacyPolicyURL) else { return }
                        UIApplication.shared.open(privacyPolicyURL)
                    }
            }
            
        }
        
    }