CODEWITHSUNDEEP
iphoneswiftuialertcontroller
Cris R
Cris R

Reputation: 1388

Dismissing UIAlertController automatically

My application has a UILongPressGestureRecognizer, which display an alert with UIAlertController when the user touches two elements on the screen. Currently, the user must press the OK button in order to dismiss the alert, however I would like to dismiss the alert after 0.5 seconds automatically, so the user doesn't compromise his interaction with the app.

Is there any way to do that?

Upvotes: 10

Views: 8789

Answers (5)

Mithra Singam
Mithra Singam

Reputation: 2091

Swift 5

Present UIAlertController and in completion block, dismiss it after specified time. By default, any code in completion block runs on a different thread so, get the main thread and dismiss UIAlertController

let alertController = UIAlertController(title: "Title", message: "Message", preferredStyle: .alert)
        present(alertController, animated: true) {
            DispatchQueue.main.asyncAfter(deadline: .now() + 1.5) {
                alertController.dismiss(animated: true, completion: nil)
            }
        }

Upvotes: 3

Danny Shen
Danny Shen

Reputation: 147

    let alert = UIAlertController(title: "Message Title", message: nil, preferredStyle: .alert)
    present(alert, animated: true) {
        sleep(1)
        alert.dismiss(animated: true, completion: nil)
    }

Upvotes: -2

Vins
Vins

Reputation: 385

Swift 3:

DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
    alert.dismiss(animated: false, completion: nil)
}

Upvotes: 2

Mark Tyers
Mark Tyers

Reputation: 3239

I have a custom function updated for Swift 2.1 which uses a UIAlertController to simulate the Toast functionality in Android.

func showToast(withMessage message:String) {
    let menu = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)
    let cancel = UIAlertAction(title: message, style: .Cancel, handler: nil)
    menu.addAction(cancel)
    self.presentViewController(menu, animated: true, completion: nil)
    let delay = 1.5 * Double(NSEC_PER_SEC)
    let time = dispatch_time(DISPATCH_TIME_NOW, Int64(delay))
    self.tableView.setEditing(false, animated: true)
    dispatch_after(time, dispatch_get_main_queue()) { () -> Void in
        self.dismissViewControllerAnimated(true, completion: nil)
    }
}

This shows a complete, working solution for the OP.

Upvotes: 5

iOS
iOS

Reputation: 5470

You can achieve the automatic dismiss of alert view by using dispatch_after of GCD.

Try below code :

    let delay = 0.5 * Double(NSEC_PER_SEC)
    let time = dispatch_time(DISPATCH_TIME_NOW, Int64(delay))
    dispatch_after(time, dispatch_get_main_queue()) { () -> Void in
        self.dismissPopover()
    }

Here, dismissCategoryPopover() is a custom method that will be called automatically after 0.5 seconds to dismiss the alert view.

Upvotes: 9

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