Adding a share action to a UIAlertController in Swift - ios

Question

I am building an app with a UIAlertController, and I want to have a button that says "Share" and then opens up something like
it seems easy to do, if it wasn't a sub-button.
My Code:
}
#IBAction func buttonTapped(sender: UIButton) {
var title: String
if sender.tag == correctAnswer {
title = "Correct"
++score
} else {
title = "Wrong"
let ac = UIAlertController(title: title, message: "Your score was \(score).", preferredStyle: .Alert)
ac.addAction(UIAlertAction(title: "Try Again", style: .Default, handler: askQuestion))
ac.addAction(UIAlertAction(title: "Share", style: .Default, handler: share))
presentViewController(ac, animated: true, completion: nil)
gameOver = true
score = 0
}
My share function is currently not defined.

Answer 1

You can define in your completion handler to open an UIActivityController after the UIAlertAction is tapped, nevertheless by default Apple in iPhone not show the share as you want, in iPad yes. With the following code you can show the share after the button is tapped:
let message = "The message"
let alertController = UIAlertController(title: "The title", message: message, preferredStyle: .Alert)
let shareAction = UIAlertAction(title: "Share", style: .Default, handler: { x -> Void in
let firstActivityItem = "Text you want"
let secondActivityItem : NSURL = NSURL(string: "http//:urlyouwant")!
// If you want to put an image
let image : UIImage = UIImage(named: "image.jpg")!
let activityViewController : UIActivityViewController = UIActivityViewController(
activityItems: [firstActivityItem, secondActivityItem, image], applicationActivities: nil)
// Anything you want to exclude
activityViewController.excludedActivityTypes = [
UIActivityTypePostToWeibo,
UIActivityTypePrint,
UIActivityTypeAssignToContact,
UIActivityTypeSaveToCameraRoll,
UIActivityTypeAddToReadingList,
UIActivityTypePostToFlickr,
UIActivityTypePostToVimeo,
UIActivityTypePostToTencentWeibo
]
self.presentViewController(activityViewController, animated: true, completion: nil)
})
alertController.addAction(shareAction)
self.presentViewController(alertController, animated: true, completion: nil)
In the above code I summarize the add more buttons, and I assume that you want the code for iPhone, if you want it too for iPad you can check my answers in this questions:
How do i add this sharing button? IOS8 with swift
Sharing Extensions in IOS Apps
I hope this help you.

Answer 2

Do something like this, if your share method doesn't work
ac.addAction(UIAlertAction(title: "Share", style: .Default, handler: { (action) -> Void in
// Do the Facebook sharing here
let content = FBSDKSharePhotoContent()
content.photo = ....
....
}))

Answer 3

Here is an answer:
I defined the share class as:
func share(action: UIAlertAction!){
if SLComposeViewController.isAvailableForServiceType(SLServiceTypeFacebook) {
let facebook:SLComposeViewController = SLComposeViewController(forServiceType: SLServiceTypeFacebook)
facebook.setInitialText("I just scored \(score) in Flagpoles.")
self.presentViewController(facebook, animated: true, completion: nil)
score = 0
} else {
let alert = UIAlertController(title: "Accounts", message: "Please login to a Facebook account to share.", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}