ios - SFSafariViewController : how to provide custom activities?

Question

Safari View Controller 的 WWDC session 提到应用程序可以通过 func safariViewController(controller: SFSafariViewController, activityItemsForURL URL: NSURL, title: String?) -> [UIActivity] 方法提供自定义事件委托(delegate) SFSafariViewControllerDelegate。我已尝试实现此方法，但在我显示 SFSafariViewCntroller 后它未被调用。我还实现了该委托(delegate)的另一个可选方法，func safariViewControllerDidFinish(_: SFSafariViewController)，它确实被调用了。我尝试将“@objc”关键字添加到我的方法中(一些其他协议(protocol)需要)，但它似乎没有改变任何东西。

我想知道会出什么问题。

谢谢!

Answer 1

这是供您引用的示例代码。在您的主视图中:

func safariViewController(controler: SFSafariViewController, activityItemsForURL: NSURL, title: String?) -> [UIActivity] {
    //global variable for the url to be shared
    webPageUrl = activityItemsForURL.absoluteString
    //global variable for the title to be shared
    webPageTitle = title!
    let wcActivity = WeChatActivity()
    let wcMoment = WeChatMoment()
    return [wcActivity, wcMoment]
}

自定义事件 1

import UIKit

class WeChatActivity : UIActivity{

    override init() {
        self.text = ""

    }

    var text:String?

    override func activityType()-> String {
        return "WeChat"
    }

    override func activityImage()-> UIImage?
    {
        return UIImage(named: "WeChat")!
    }

    override func activityTitle() -> String
    {
        return "微信好友"
    }


    override class func activityCategory() -> UIActivityCategory{
        return UIActivityCategory.Action
        //you can change to .Share and it'll appear in the share line
    }

    func getURLFromMessage(message:String)-> NSURL
    {
        var url = "whatsapp://"

        if (message != "")
        {
            url = "\(url)send?text=\(message)"
        }

        return NSURL(string: url)!
    }


    override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool {
        return true;
    }

    override func performActivity() {
        shareToWeChat("ftcweixin://?url=\(webPageUrl)&title=\(webPageTitle)&description=\(webPageDescription)&img=\(webPageImageIcon)&to=chat")
    }

}

自定义事件 2:

import UIKit

class WeChatMoment : UIActivity{

    override init() {
        self.text = ""
    }

    var text:String?


    override func activityType()-> String {
        return "WeChatMoment"
    }

    override func activityImage()-> UIImage?
    {
        return UIImage(named: "Moment")!
    }

    override func activityTitle() -> String
    {
        return "微信朋友圈"
    }


    override class func activityCategory() -> UIActivityCategory{
        return UIActivityCategory.Action
    }

    func getURLFromMessage(message:String)-> NSURL
    {
        var url = "whatsapp://"

        if (message != "")
        {
            url = "\(url)send?text=\(message)"
        }

        return NSURL(string: url)!
    }


    override func canPerformWithActivityItems(activityItems: [AnyObject]) -> Bool {
        return true;
    }

    override func performActivity() {
        shareToWeChat("ftcweixin://?url=\(webPageUrl)&title=\(webPageTitle)&description=\(webPageDescription)&img=\(webPageImageIcon)&to=moment")
    }
}

您将能够在操作表的操作行中看到两个新图标。您还可以将其更改为出现在共享行中，如代码中所述。

最后一点，微信在Safari View上分享是有坑的，因为微信不符合Safari的分享标准。您可以点击微信分享图标，微信即可分享。但是您只能在 Safari View 的页面中获取页面标题和 url，这与 WKWebView 不同，您可以使用 evaluateJavaScript 获取所有内容。所以你需要从其他地方获取分享图片和描述(用于分享给 friend )。