截图和分享按钮分享

Question

我是一个早期的初学者，我试图采取的应用程序的截图，并与共享按钮分享它。分享按钮可以工作，它可以让我分享我的初始文本和URL，只是截图似乎甚至没有被截取。

经过几天的研究，我发现所有的答案对我来说可能都太高级了，我可能一开始就错过了基础知识。

我不知道在哪里放的代码采取截图，或者我必须设置使其工作。我也不知道如何实现截图作为图像。

这是我的共享按钮的代码，它工作得很好:

func socialShare(sharingText: String?, sharingImage: UIImage?, sharingURL: NSURL?) {
        var sharingItems = [AnyObject]()

        if let text = sharingText {
            sharingItems.append(text)
        }
        if let image = sharingImage {
            sharingItems.append(image)
        }
        if let url = sharingURL {
            sharingItems.append(url)
        }
        let activityViewController = UIActivityViewController(activityItems: sharingItems, applicationActivities: nil)
        activityViewController.excludedActivityTypes = [UIActivityTypeCopyToPasteboard,UIActivityTypeAirDrop,UIActivityTypeAddToReadingList,
            UIActivityTypeAssignToContact,UIActivityTypePostToTencentWeibo,UIActivityTypePostToVimeo,UIActivityTypePrint,UIActivityTypeSaveToCameraRoll,UIActivityTypePostToWeibo]
        self.presentViewController(activityViewController, animated: true, completion: nil)
    }


    @IBAction func clickShare(sender: AnyObject) {

        socialShare("Text to share #Hashtag", sharingImage: UIImage(named: "image"), sharingURL: NSURL(string: "http://itunes.apple.com/app/"))
    }

这是我发现到处采取截图的代码。但是我不让它工作/不知道把它放在哪里，如何连接它与IBAction以及如何实现截图作为图像。

//Generate the screenshot
    UIGraphicsBeginImageContext(view.frame.size)
    view.layer.renderInContext(UIGraphicsGetCurrentContext())
    var image = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

我将非常感谢一个答案，引导我错过的基本知识。提前感谢!

Answer 1

快速截图(不带运营商状态栏)和共享代码示例:

    let bounds = UIScreen.mainScreen().bounds
    UIGraphicsBeginImageContextWithOptions(bounds.size, true, 0.0)
    self.view.drawViewHierarchyInRect(bounds, afterScreenUpdates: false)
    let img = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    let activityViewController = UIActivityViewController(activityItems: [img], applicationActivities: nil)
    self.presentViewController(activityViewController, animated: true, completion: nil)

Answer 2

Swift 3.1中的共享

@IBAction func shareButtonClicked(_ sender: Any) {
    //Set the default sharing message.
    let message = "Hello!"
    let link = NSURL(string: "http://stackoverflow.com/")
    // Screenshot:
    UIGraphicsBeginImageContextWithOptions(self.view.frame.size, true, 0.0)
    self.view.drawHierarchy(in: self.view.frame, afterScreenUpdates: false)
    let img = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    //Set the link, message, image to share.
    if let link = link, let img = img {
        let objectsToShare = [message,link,img] as [Any]
        let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
        activityVC.excludedActivityTypes = [UIActivityType.airDrop, UIActivityType.addToReadingList]
        self.present(activityVC, animated: true, completion: nil)
    }
}

Answer 3

Swift 4 Works.

    let bounds = UIScreen.main.bounds
    UIGraphicsBeginImageContextWithOptions(bounds.size, true, 0.0)
    self.view.drawHierarchy(in: bounds, afterScreenUpdates: false)
    let img = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    let activityViewController = UIActivityViewController(activityItems: [img!], applicationActivities: nil)
    self.present(activityViewController, animated: true, completion: nil)