ios - 有没有比这更好的方法在通知附件中使用来自 Assets.xcassets 的图像？
<p><p>我想将 Assets.xcassets 中的图像附加到通知中。我一直在寻找解决方案大约一个小时，这似乎是唯一的方法:</p>
<pre><code>func createLocalUrl(forImageNamed name: String) -> URL? {
let fileManager = FileManager.default
let cacheDirectory = fileManager.urls(for: .cachesDirectory, in: .userDomainMask)
let url = cacheDirectory.appendingPathComponent("\(name).png")
guard fileManager.fileExists(atPath: url.path) else {
guard
let image = UIImage(named: name),
let data = UIImagePNGRepresentation(image)
else { return nil }
fileManager.createFile(atPath: url.path, contents: data, attributes: nil)
return url
}
return url
}
</code></pre>
<p>来源:<a href="https://stackoverflow.com/questions/21769092/can-i-get-a-nsurl-from-an-xcassets-bundle]" rel="noreferrer noopener nofollow">Can I get a NSURL from an XCAssets bundle?</a> </p>
<p>这似乎有点矫枉过正。但是据我所知，这是获取您可以使用的 URL 的唯一方法:</p>
<pre><code>let imageURL = createLocalUrl(forImageNamed: "TestImage")
let attachment = try! UNNotificationAttachment(identifier: "image", url: imageURL!, options: [:])
content.attachments =
</code></pre>
<p>有没有更好的方法将 Assets.xcassets 中的图像添加到本地通知？ (是的，我知道我可以将图像存储在 Assets 之外并使用 Bundle.main.etc)</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我知道这是个老问题，但我稍微改进了你的解决方案，也许有人会使用它</p>
<pre><code>extension UIImage {
func createLocalURL() -> URL? {
guard let imageName = self.accessibilityIdentifier else {
return nil
}
let fileManager = FileManager.default
guard let cacheDirectory = fileManager.urls(for: .cachesDirectory, in: .userDomainMask).first else {
return nil
}
let url = cacheDirectory.appendingPathComponent("\(imageName).png")
guard fileManager.fileExists(atPath: url.path) else {
guard let data = self.pngData() else { return nil }
fileManager.createFile(atPath: url.path, contents: data, attributes: nil)
return url
}
return url
}
}
</code></pre>
<p>你想用的时候上课</p>
<pre><code>func createImageAttachment(image: UIImage?) -> {
var notificationAttachment: = []
if let image = image,
let imageUrl = image.createLocalURL(),
let attachment = try? UNNotificationAttachment(identifier: "image", url: imageUrl, options: nil) {
notificationAttachment.append(attachment)
}
return notificationAttachment
}
</code></pre>
<p>并将图像添加到通知中</p>
<pre><code>let image = UIImage(named: "TestImage")
content = createImageAttachment(image: image)
</code></pre>
<p>这样更安全</p></p>
<p style="font-size: 20px;">关于ios - 有没有比这更好的方法在通知附件中使用来自 Assets.xcassets 的图像？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/51488589/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/51488589/
</a>
</p>
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