iOS共享扩展程序无法在Chrome中运行

Question

适用于Safari,不适用于Chrome

也许问题很简单而且很愚蠢,但我是iOS开发的新手,我找不到任何正确的解决方案来解决这个问题.

我需要得到:
1)页面网址
2)页面名称

延期

的Info.plist

<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>NSExtensionActivationRule</key>
        <dict>
            <key>NSExrensionActivationSupportsText</key>
            <true/>
            <key>NSExtensionActivationSupportsFileWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsImageWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsMovieWithMaxCount</key>
            <integer>20</integer>
            <key>NSExtensionActivationSupportsWebPageWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
            <integer>0</integer>
        </dict>
        <key>NSExtensionJavaScriptPreprocessingFile</key>
        <string>DemoPreprocessor</string>
    </dict>
    <key>NSExtensionMainStoryboard</key>
    <string>MainInterface</string>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
</dict>

我已经向Chrome添加了更多内容,但它仍无效.对于Safari,这就足够了:

NSExtensionActivationSupportsWebPageWithMaxCount, NSExtensionActivationSupportsWebURLWithMaxCount, NSExrensionActivationSupportsText, NSExtensionJavaScriptPreprocessingFile

我尝试了三种方法,包括和不使用DemoPreprocessor.js.但所有这些都不适用于Chrome:

1. ShareViewController.swift

override func viewDidLoad() {
    super.viewDidLoad()

    let items = extensionContext?.inputItems
    var itemProvider: NSItemProvider?

    if items != nil && items!.isEmpty == false {
        let item = items![0] as! NSExtensionItem
        if let attachments = item.attachments {
            if !attachments.isEmpty {
                itemProvider = (attachments[0] as? NSItemProvider)!
            }
        }
    }

    let urlType = kUTTypePropertyList as String
    if ((itemProvider?.hasItemConformingToTypeIdentifier(urlType)) != nil) {
        itemProvider?.loadItemForTypeIdentifier(urlType, options: nil, completionHandler: {
            (item: NSSecureCoding?, error: NSError!) -> Void in
            if let resultDict = item as? NSDictionary {
                self.linkName = resultDict[NSExtensionJavaScriptPreprocessingResultsKey]!["URL"] as! String
                self.linkUrl = resultDict[NSExtensionJavaScriptPreprocessingResultsKey]!["title"] as! String
            }

        })
    }

}

2 ShareViewController.swift

override func viewDidLoad() {
    super.viewDidLoad()

    let items = extensionContext?.inputItems
    var itemProvider: NSItemProvider?

    if items != nil && items!.isEmpty == false {
        let item = items![0] as! NSExtensionItem
        if let attachments = item.attachments {
            if !attachments.isEmpty {
                itemProvider = (attachments[0] as? NSItemProvider)!
            }
        }
    }

    let urlType = kUTTypeURL as NSString as String

    if ((itemProvider?.hasItemConformingToTypeIdentifier(urlType)) != nil) {
       itemProvider?.loadItemForTypeIdentifier(urlType, options: nil, completionHandler: {
           item, error in
           self.linkName = self.contentText
           self.linkUrl = "\(item!)"
       })
    }

}

3 ShareViewController.swift

override func viewDidLoad() {
    super.viewDidLoad()

    let items = extensionContext?.inputItems
    var itemProvider: NSItemProvider?

    if items != nil && items!.isEmpty == false {
        let item = items![0] as! NSExtensionItem
        if let attachments = item.attachments {
            if !attachments.isEmpty {
                itemProvider = (attachments[0] as? NSItemProvider)!
            }
        }
    }

    if self.linkUrl.characters.count < 1 {
        if ((itemProvider?.hasItemConformingToTypeIdentifier("public.url")) != nil) {
            itemProvider?.loadItemForTypeIdentifier("public.url", options: nil, completionHandler: {
                item, error in self.linkUrl = "\(item!)"
            })
        }
    }

}

DemoPreprocessor.js

var MyPreprocessor = function() {};

MyPreprocessor.prototype = {
    run: function(arguments) {
        arguments.completionFunction({"URL": document.URL, "pageSource": document.documentElement.outerHTML, "title": document.title, "selection": window.getSelection().toString()});
    }
};

var ExtensionPreprocessingJS = new MyPreprocessor;

Answer 1

在我的应用程序中，我已经让它工作了，但那是前一段时间了，我不记得哪些具体步骤是必要的，所以我将发布我的设置，希望它能作为一个解决方案。

我在您的 plist 中看到的第一个问题是 WebURL 计数为 0。

这是我的扩展的 .plist 的一部分。我认为允许任意加载与共享无关，并且访问我的服务器需要它，但我将其放在这里以供参考。

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>
<key>NSExtension</key>
<dict>
    <key>NSExtensionAttributes</key>
    <dict>
        <key>NSExtensionActivationRule</key>
        <dict>
            <key>NSExtensionActivationSupportsImageWithMaxCount</key>
            <integer>1</integer>
            <key>NSExtensionActivationSupportsWebURLWithMaxCount</key>
            <integer>1</integer>
        </dict>
    </dict>
    <key>NSExtensionPointIdentifier</key>
    <string>com.apple.share-services</string>
    <key>NSExtensionPrincipalClass</key>
    <string>ShareViewController</string>
</dict>

我的控制器的代码部分负责获取 URL：

// MARK: - NSExtensionRequestHandling
extension ShareViewController {
    override func beginRequestWithExtensionContext(context: NSExtensionContext) {
        super.beginRequestWithExtensionContext(context)

        guard let provider = (context.inputItems.first?.attachments as? [NSItemProvider])?.first else { return cancel() }

        if provider.hasItemConformingToTypeIdentifier(kUTTypeURL as String) {
            provider.loadItemForTypeIdentifier(kUTTypeURL as String, options: nil) { url, error in
                guard let url = url as? NSURL else { return self.cancel() }
                // do what you want with the url
            }
        } else {
            cancel()
        }
    }
}

至于获取网站的名称，我认为有几种方法。一种是使用项目中已有的 JS 脚本，另一种是查看提供者是否有文本类型的项目（包含站点名称），但它们是特定于浏览器的（有些仅适用于 Safari，有些适用于浏览器）像 Chrome 一样）。我选择以不同的方式进行处理，我使用一个假的 WKWebView（它永远不会添加到视图层次结构中，它只是一个属性）并使用我从提供者那里获得的 url 发出请求。然后我就可以从 JS 代码中截取网站的名称，如下所示：

func setupHiddenWebView() {
    hiddenWebView = WKWebView()
    hiddenWebView?.navigationDelegate = self
}

func setupForURL(url: NSURL) {
    (...)
    hiddenWebView?.loadRequest(NSURLRequest(URL: url))
}

// MARK: - WKNavigationDelegate
extension ShareView: WKNavigationDelegate {
    func webView(webView: WKWebView, didFinishNavigation navigation: WKNavigation!) {
        webView.evaluateJavaScript("document.title") { result, error in
            guard let title = result as? String else { return }
            // do what you want with the page's title
        }
    }
}