ios - 迅速 3 : present does not work on iOS 9 and older
<p><p>我正在尝试呈现一个 UIImagePickerController 并且当我使用时:</p>
<pre><code>self.present(picker, animated: true, completion: nil)
</code></pre>
<p>我得到这个错误:</p>
<pre><code>'NSPersistentContainer' is only available on iOS 10.0 or newer
</code></pre>
<p>我希望我的应用支持 iOS 8 及更高版本</p>
<p>编辑:
选择器代码:</p>
<pre><code>if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.photoLibrary) {
var imagePicker = UIImagePickerController()
imagePicker.delegate = self
imagePicker.sourceType = UIImagePickerControllerSourceType.photoLibrary
imagePicker.allowsEditing = true
self.present(imagePicker, animated: true, completion: nil)
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>根据苹果文档:<a href="https://developer.apple.com/reference/coredata/nspersistentcontainer" rel="noreferrer noopener nofollow">https://developer.apple.com/reference/coredata/nspersistentcontainer</a> </p>
<p>我们可以在右侧看到:</p>
<blockquote>
<p>SDKs</p>
<p>iOS 10.0+<br/>
macOS 10.12+<br/>
tvOS 10.0+<br/>
watchOS 3.0+</p>
</blockquote>
<p>表示如果你开发 iOS，<code>NSPersistentContainer</code> 只能在 iOS 10.0 或更新版本中使用。无法在 iOS 8 或低于 iOS 10 的系统中使用</p></p>
<p style="font-size: 20px;">关于ios - 迅速 3 : present does not work on iOS 9 and older，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/41233749/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/41233749/
</a>
</p>
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