ios – 从Share Extension中检索imageURL

我正在检索URL,但似乎无法弄清楚如何获取imageURL.

以下是我获取普通网址的方法,

if let item = extensionContext?.inputItems.first as? NSExtensionItem {
        if let itemProvider = item.attachments?.first as? NSItemProvider {      
            if itemProvider.hasItemConformingToTypeIdentifier(kUTTypeItem as String) {
                itemProvider.loadItem(forTypeIdentifier: kUTTypeItem as String,options: nil,completionHandler: { (url,error) -> Void in
                    if let shareURL = url as? NSURL {

                        let components = URLComponents(url:shareURL as URL,resolvingAgainstBaseURL: true)
                        if  let host = components?.host { self.shareTitle = host }
                        self.shareURL = shareURL.absoluteString!                            
                        self.POSTShareData(completion: nil)
                    }
                    self.extensionContext?.completeRequest(returningItems: [],completionHandler:nil)
                })
            }
        }
    }

我试图将typeIdentifier更改为kUTTypeImage无济于事.我将我的info.plist设置为NSExtensionActivationRule到TRUEPREDICATE以查看我可以检索的内容.我想也许我必须在.plist中更加明确？

我的目标是iOS 9.3