如何创建一个“超链接”与Swift？ [英] How can I create a "hyperlink" with Swift?

问题描述

我试图使单独的文本 UILabel 可点击。我在寻找的是在网络开发中通常被称为超链接。

I'm trying to make separate pieces of text UILabels clickable. What I'm looking for is commonly known as a hyperlink in web development.

<a href="//example.com">Link 1</a>
<a href="//example.com/example">Link 2</a>
<a href="//example.com/other_example">Link 3</a>

每个 a 标签是自己的 UILabel ，当单击标签之间的文本时，理想情况下将打开Safari到指定的 href 。

Each a tag is its own UILabel, and it would ideally open Safari to the specified href when the text between the tags is clicked.

我发现了一些关于如何在Objective-C中做这种事情的资源，但是它们似乎都不必要地复杂，并且不能很好地转换为Swift（他们适合一个目标-C组织结构，在Swift中不能很好地工作，违背了推荐的语言使用方式）。

I've found a bevy of resources on how to do this sort of thing in Objective-C, but they all seem unnecessarily complicated and don't translate well to Swift (they fit an Objective-C organizational structure that doesn't work well in Swift and goes against the recommended way of using the language).

这里有几个：

• 如何在iPhone应用程式中加入超连结


• 如何在NSTextField和Cocoa 中创建可点击链接


• Text中的超链接

• How to add hyperlink in iPhone app?
• How to make a clickable link inside a NSTextField and Cocoa
• Text as Hyperlink in Objective-C

如果我有一个3 UILabel ，

项目1

Item 1

项目2

项目3

那么什么是最好的Swift-y方式，使每个项目打开到一个不同的URL在Safari？

then what would be the best "Swift-y" way to make each item open to a different URL in Safari?

可以为每个按钮创建单独的按钮，但是 UILabel 是以编程方式填充的，因此我认为让文本响应敲击可能是一个更好的选择。

I could create separate buttons for each, but the UILabels are programmatically populated, so I was thinking that making the text respond to taps might be a better option.

推荐答案

The one方法将类似于以下内容。

假设是：

The One approach would be something like the following.
The assumptions are:

• self.urls是一个字符串数组，其中包含与每个 UILabel 关联的网址。


• 每个 UILabel 标签已设置为数组中的相应索引


• labelTapped：设置为标签的 touchUpInside 处理程序。





• self.urls is a string array containing the urls associated with each UILabel.
• Each UILabel tag has been set to the corresponding index in the array
• labelTapped: is set as the touchUpInside handler for the labels.

import Foundation
import UIKit

class urltest {

    var urls:[String]

    init() {
        self.urls=[String]()  // Load URLs into here
    }

    @IBAction func labelTapped(sender:UILabel!) {

        let urlIndex=sender.tag;
        if (urlIndex >= 0 && urlIndex < self.urls.count) {
           self.openUrl(self.urls[urlIndex]);
        }

    }

    func openUrl(url:String!) {

        let targetURL=NSURL.URLWithString(url)

        let application=UIApplication.sharedApplication()

        application.openURL(targetURL);

    }
}

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