Как реализовать "кнопку share" в Swift

вот как я реализовал совместное использование с Swift 3 с помощью правой кнопки на навигационном контроллере. Он включает в себя изображение, текст и ссылку.

На ViewDidLoad

navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Share", style: .plain, target: self, action: #selector(share(sender:)))

создать функции

func share(sender:UIView){
        UIGraphicsBeginImageContext(view.frame.size)
        view.layer.render(in: UIGraphicsGetCurrentContext()!)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()

        let textToShare = "Check out my app"

        if let myWebsite = URL(string: "http://itunes.apple.com/app/idXXXXXXXXX") {//Enter link to your app here
            let objectsToShare = [textToShare, myWebsite, image ?? #imageLiteral(resourceName: "app-logo")] as [Any]
            let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)

            //Excluded Activities
            activityVC.excludedActivityTypes = [UIActivityType.airDrop, UIActivityType.addToReadingList]
            //

            activityVC.popoverPresentationController?.sourceView = sender
            self.present(activityVC, animated: true, completion: nil)
        }    }

  @IBAction func shareButtonClicked(sender: AnyObject)
    {
        //Set the default sharing message.
        let message = "Message goes here."
        //Set the link to share.
        if let link = NSURL(string: "http://yoururl.com")
        {
            let objectsToShare = [message,link]
            let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
            activityVC.excludedActivityTypes = [UIActivityTypeAirDrop, UIActivityTypeAddToReadingList]
            self.presentViewController(activityVC, animated: true, completion: nil)
        }
    }

Это позволит вам представить UIActivityViewController для обмена ссылкой и сообщением с любым приложением, которое их примет.

подробности

xCode 9.1, Swift 4

решение

TopViewController решение

extension UIApplication {

    class var topViewController: UIViewController? {
        return getTopViewController()
    }

    private class func getTopViewController(base: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {
        if let nav = base as? UINavigationController {
            return getTopViewController(base: nav.visibleViewController)
        }
        if let tab = base as? UITabBarController {
            if let selected = tab.selectedViewController {
                return getTopViewController(base: selected)
            }
        }
        if let presented = base?.presentedViewController {
            return getTopViewController(base: presented)
        }
        return base
    }
}

extension Equatable {
    func share() {
        let activity = UIActivityViewController(activityItems: [self], applicationActivities: nil)
        UIApplication.topViewController?.present(activity, animated: true, completion: nil)
    }
}

использование

let str = "String"
str.share()

"Data to share".share()
1.share()

полная выборка

import UIKit

class ViewController: UIViewController {

    let imageView = UIImageView(frame: CGRect(x: 50, y: 120, width: 200, height: 200))
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        let button = UIButton(frame: CGRect(x: 50, y: 50, width: 100, height: 40))
        button.setTitle("Button", for: .normal)
        button.addTarget(self, action: #selector(shareButtonTapped), for: .touchUpInside)
        button.setTitleColor(.blue, for: .normal)
        view.addSubview(button)

        imageView.image = UIImage(named: "image")
        imageView.isUserInteractionEnabled = true
        imageView.contentMode = .scaleAspectFill
        imageView.clipsToBounds = true
        imageView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(imageViewTapped)))
        view.addSubview(imageView)
    }

    @objc func shareButtonTapped() {
         "Data to share".share()
    }

    @objc func imageViewTapped() {
        imageView.image?.share()
    }
}

пример результата

Я разрабатываю ответ @onemillion:) вы можете использовать это для Swift 3

override func viewDidLoad() {
    super.viewDidLoad()

    share(message: "selam", link: "htttp://google.com")
}

func share(message: String, link: String) {
    if let link = NSURL(string: link) {
        let objectsToShare = [message,link] as [Any]
        let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
        self.present(activityVC, animated: true, completion: nil)
    }
}

ОБНОВЛЕНО ДЛЯ SWIFT 3.0

/ / первая функция для добавления кнопки на панель навигации

func addingNavBarBtn () {

    // setting button's image

    let comunicateImage = UIImage(named: "NavfShare")

    let comunicateBtn = UIBarButtonItem(image: comunicateImage, style: .plain, target: self, action: #selector(shareButtonPressed))

    comunicateBtn.tintColor = UIColor.white

    self.navigationItem.rightBarButtonItem = comunicateBtn

}

//setting button's action

func shareButtonPressed(){

    //checking the object and the link you want to share


    let urlString = "https://www.google.com"



    let linkToShare = [urlString!]

    let activityController = UIActivityViewController(activityItems: linkToShare, applicationActivities: nil)

    self.present(activityController, animated: true, completion: nil)

}

let items = ["Your Sharing Content"];
let activity = UIActivityViewController(activityItems: items, applicationActivities: nil);
self.present(activity, animated: true, completion: nil)

 @IBAction func action_shareOnSocial(_ sender: UIButton) {

    //  Converted to Swift 4 by Swiftify v4.1.6809 - https://objectivec2swift.com/
    let theMessage = "Text you want to set , https://www.hackingwithswift.com/"

    let items = [theMessage]

    // build an activity view controller
    let controller = UIActivityViewController(activityItems: items, applicationActivities: nil)

    let popPresenter: UIPopoverPresentationController? = controller.popoverPresentationController
    popPresenter?.sourceView = sender

    // and present it
    self.presentActivityController(controller)

}

func presentActivityController(_ controller: UIActivityViewController?) {
    // for iPad: make the presentation a Popover
    controller?.modalPresentationStyle = .popover

    if let aController = controller {
        present(aController, animated: true)
    }

    let popController: UIPopoverPresentationController? = controller?.popoverPresentationController

    popController?.permittedArrowDirections = .any

    popController?.barButtonItem = navigationItem.leftBarButtonItem

    // access the completion handler
    controller?.completionWithItemsHandler = { activityType, completed, returnedItems, error in
        // react to the completion
        if completed {

        } else {
            // user cancelled
            print("We didn't want to share anything after all.")
        }
    }
}