ios - 如何使 UITextView 中的属性字符串可访问?
<p><p>默认情况下,屏幕阅读器将选择整个 View ,并且双击无法点击链接。事实上,在可访问性检查器上按下激活会使应用程序委托(delegate)崩溃,而控制台中没有任何堆栈跟踪。我已经尝试在 UITextView 本身中弄乱可访问性特征,但我没有任何运气。</p>
<pre><code>let quoteAttributedStr = NSMutableAttributedString(string: "This is a test String" + " ")
let enableLinkText = NSAttributedString(string: "this is the clickable text", attributes: dummyLinkAttribute)
quoteAttributedStr.append(enableLinkText)
return quoteAttributedStr
</code></pre>
<p> <a href="/image/Kzf5Y.png" rel="noreferrer noopener nofollow"><img src="/image/Kzf5Y.png" alt="Example TextView"/></a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>问题涉及 <a href="http://a11y-guidelines.orange.com/mobile_EN/voiceover.html#OpenLink" rel="noreferrer noopener nofollow"><strong>specific VoiceOver gesture</strong></a>当必须在 UITextView 中激活链接时使用。</p>
<p>我创建了一个空白项目 <em>(iOS 12, Xcode 10)</em>,包括后面的代码片段,用于在 <code>myTextView</code> 元素中获取 2 个 URL:</p>
<pre><code>class TextViewURLViewController: UIViewController, UITextViewDelegate {
@IBOutlet weak var myTextView: UITextView!
let myString = "Follow this developers guide if you already know the VoiceOver gestures."
let myDevURL = "https://a11y-guidelines.orange.com/mobile_EN/dev-ios.html"
let myGesturesURL = "https://a11y-guidelines.orange.com/mobile_EN/voiceover.html"
override func viewDidLoad() {
let attributedString = NSMutableAttributedString(string: myString)
attributedString.addAttribute(.link,
value: myDevURL,
range: NSRange(location: 12,
length: 17))
attributedString.addAttribute(.link,
value: myGesturesURL,
range: NSRange(location: 52,
length: 19))
myTextView.attributedText = attributedString
myTextView.font = UIFont(name: myTextView.font!.fontName,
size: 25.0)
}
func textView(_ textView: UITextView,
shouldInteractWith URL: URL,
in characterRange: NSRange,
interaction: UITextItemInteraction) -> Bool {
UIApplication.shared.open(URL, options: [:])
return false
}
}
</code></pre>
<p>按照以下步骤激活链接:</p>
<ol>
<li>使用适当的手势获取转子 <code>links</code> 项。</li>
<li>用一根手指向上或向下滑动即可到达链接。</li>
<li>点按两次并<strong>按住直到第 4 步发生事件</strong>。</li>
</ol>
<p> <a href="/image/yBeOs.png" rel="noreferrer noopener nofollow"><img src="/image/yBeOs.png" alt="description of the first three steps"/></a> </p>
<ol start="4">
<li>链接上方会显示一种弹出窗口。</li>
<li>操作表出现后,向右滑动以获取 <code>Open</code> 操作。</li>
<li>点按两次以打开 URL 并获取第 7 步的最后一个屏幕。</li>
</ol>
<p> <a href="/image/KnOIA.png" rel="noreferrer noopener nofollow"><img src="/image/KnOIA.png" alt="description of the last three steps"/></a> </p>
<p>按照上面的代码片段,您可以<strong>使 UITextView 中的属性字符串可访问</strong>,然后通过双击并按住直到弹出窗口出现在您的链接上方打开它<em>(这就是 VoiceOver 的工作原理) </em>.</p></p>
<p style="font-size: 20px;">关于ios - 如何使 UITextView 中的属性字符串可访问?,我们在Stack Overflow上找到一个类似的问题:
<a href="https://stackoverflow.com/questions/43121662/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/43121662/
</a>
</p>
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