How to show or link to new ViewController when push button on alert?
This is my code
let alert = UIAlertController(title: validateQRObj.responseDescription, message: validateQRObj.productName, preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .default) { (action) -> Void in
let viewController = self.storyboard?.instantiateViewController(withIdentifier: "ProductDetialViewController")
self.present(viewController!, animated: true, completion: nil)
}
alert.addAction(action)
self.present(alert, animated: true, completion: nil)
Control drag from View Controller 1 (The yellow dot) to any where on View Controller 2 and then click on the Segue. Show the Attributes inspector and Under Storyboard Segue identifier name the identifier VC2
If this is the answer you were looking for don't forget to except the answer.
func alert(){
let alertController = UIAlertController(title: "Open View Controller. ", message: "Press Ok to open View Controller number 2.", preferredStyle: UIAlertControllerStyle.alert)
let ok = UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: {(action) -> Void in
//The (withIdentifier: "VC2") is the Storyboard Segue identifier.
self.performSegue(withIdentifier: "VC2", sender: self)
})
alertController.addAction(ok)
self.present(alertController, animated: true, completion: nil)
}
For me it doesn't work. I made :
func alert(){
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let twop = storyboard.instantiateViewController(withIdentifier: "Accueil") as! Accueil
let alertController = UIAlertController(title: "Open new View !", message: "Clic to ok", preferredStyle: UIAlertControllerStyle.alert)
let ok = UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: {(action) -> Void in
self.navigationController?.show(twop, sender: self)
})
alertController.addAction(ok)
self.present(alertController, animated: true, completion: nil)
}
and now it's working !!
Related
I want after signup the alert controller should pop up and then go the loginFirstViewController but this is not going to happen why?? it only goes to loginfirstviewcontroller instead of poping up alert controller
if error == nil {
FIRAuth.auth()?.currentUser!.sendEmailVerification(completion: { (error) in
})
print("You have successfully signed up")
//Goes to the Setup page which lets the user take a photo for their profile picture and also chose a username
let alertController = UIAlertController(title: "Successful!", message: "Email Verification link sent", preferredStyle: .alert)
let alertActionOkay = UIAlertAction(title: "Okay", style: .default)
let vc = self.storyboard?.instantiateViewController(withIdentifier: "LoginFirstViewController")
self.present(vc!, animated: true, completion: nil)
alertController.addAction(alertActionOkay)
self.present(alertController, animated: true, completion: nil)
}
You directly opened new viewcontroller to prevent this you should add completion handler for uialertaction. When the user press ok button you can open other viewcontroller
let alertController = UIAlertController(title: "Successful!", message: "Email Verification link sent", preferredStyle: .alert)
let alertActionOkay = UIAlertAction(title: "Okay", style: .default) { (action) in
let vc = self.storyboard?.instantiateViewController(withIdentifier: "LoginFirstViewController")
self.present(vc!, animated: true, completion: nil)
}
alertController.addAction(alertActionOkay)
self.present(alertController, animated: true, completion: nil)
Good day,
This is my code:
#IBAction func logOutAction(sender: AnyObject) {
try! FIRAuth.auth()!.signOut()
let alertController = UIAlertController(title: "Sure?", message: "Are you sure you want to log out?", preferredStyle: .Alert)
let defaultAction = UIAlertAction(title: "Yes", style: .Default, handler: nil)
alertController.addAction(defaultAction)
let defaultAction2 = UIAlertAction(title: "No", style: .Cancel, handler: nil)
alertController.addAction(defaultAction2)
self.presentViewController(alertController, animated: true, completion: nil)
let VC = self.storyboard?.instantiateViewControllerWithIdentifier("loginscreen") as! ViewController //The file that controls the view
self.presentViewController(VC, animated: true, completion: nil)
}
As you can see I want to log out the user when pressing the logout button. When the user clicks logout a UIalert popsup asking if they are sure they want to log out, but when I click okay it doesn't switch back to the loginscree ViewController.
Can anyone help me?
If the last two lines represent the view that you want to present, then you have to execute this code inside the handler of the "Yes" button action:
let defaultAction = UIAlertAction(title: "Yes", style: .Default, handler: { _ in
let VC = self.storyboard?.instantiateViewControllerWithIdentifier("loginscreen") as! ViewController //The file that controls the view
self.presentViewController(VC, animated: true, completion: nil)
})
alertController.addAction(defaultAction)
You need to logout after somebody click "Yes"
let yesActionHandler = { (action:UIAlertAction!) -> Void in
let VC = self.storyboard?.instantiateViewControllerWithIdentifier("loginscreen") as! ViewController //The file that controls the view
self.presentViewController(VC, animated: true, completion: nil)
}
let defaultAction = UIAlertAction(title: "Yes", style: .Default, handler: yesActionHandler)
alertController.addAction(defaultAction)
I want to display a viewcontroller called InViewController, when the "OK" from the add.alertAction is pressed.
if ((user) != nil) {
let alert = UIAlertController(title: "Success", message: "Logged In", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "OK", style: .Default) { _ in })
self.presentViewController(alert, animated: true){}
}
let alert = UIAlertController(title: "Success", message: "Logged In", preferredStyle: .Alert)
let action = UIAlertAction(title: "OK", style: .Default) { (action) -> Void in
let viewControllerYouWantToPresent = self.storyboard?.instantiateViewControllerWithIdentifier("SomeViewControllerIdentifier")
self.presentViewController(viewControllerYouWantToPresent!, animated: true, completion: nil)
}
alert.addAction(action)
self.presentViewController(alert, animated: true, completion: nil)
You can add a completionHandler to the UIAlertAction when you add it to do it what you want, like in the following way:
if ((user) != nil) {
let alert = UIAlertController(title: "Success", message: "Logged In", preferredStyle: .Alert)
let OKAction = UIAlertAction(title: "OK", style: .Default, handler: { _ -> Void in
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let nextViewController = storyBoard.instantiateViewControllerWithIdentifier("ViewControllerA") as! ViewControllerA
self.presentViewController(nextViewController, animated: true, completion: nil)
})
alert.addAction(OKAction)
self.presentViewController(alert, animated: true){}
}
To set the StoryboardID you can use Interface Builder in the Identity Inspector, see the following picture:
I put everything in the above code referencing ViewControllerA, you have to set the name of your UIViewController according what you want.
EDIT:
You are pointing to a UIView or some other object on the StoryBoard. Press the yellow indicator on top of the other objects which is your UIViewController, like in the following picture:
I hope this help you.
Here's how you can do that ,
I'm just updating the good work of Victor Sigler
you follow his answer with this little update ..
private func alertUser( alertTitle title: String, alertMessage message: String )
{
let alert = UIAlertController(title: title, message: message, preferredStyle: .alert)
let actionTaken = UIAlertAction(title: "Success", style: .default) { (hand) in
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let destinationVC = storyBoard.instantiateViewController(withIdentifier: "IntroPage") as? StarterViewController
self.present(destinationVC!, animated: true, completion: nil)
}
alert.addAction(actionTaken)
self.present(alert, animated: true) {}
}
I am quite new to Swift development and I tried referring to the Swift UIAlertController API but couldn't figure out how to navigate to another UIViewController after clicking a button on the UIAlertController.
I would appreciate any pointers, help or a solution to this problem. My code snippet is given below -
#IBAction func showAlert() {
let alertController = UIAlertController(title: "Disclaimer", message: "Disclaimer Text Here", preferredStyle: .Alert)
let declineAction = UIAlertAction(title: "Decline", style: .Cancel, handler: nil)
alertController.addAction(declineAction)
let acceptAction = UIAlertAction(title: "Accept", style: .Default) { (_) -> Void in
let secondVC = ViewController(nibName: "ViewController", bundle: nil)
let navController = UINavigationController(rootViewController: secondVC)
self.presentViewController(navController, animated: true, completion: nil)
}
alertController.addAction(acceptAction)
presentViewController(alertController, animated: true, completion: nil)
}
What I am trying to do here is when a button is clicked the disclaimer AlertController is displayed. If "Decline" button is selected, cancel action is performed and if "Accept" is selected the app should navigate to a Navigation Controller which then allows me to navigate to other ViewControllers using a menu in the application.
Earlier I used the story board to link a button to the NavigationController to traverse to the ViewController I desired. Now I want to do the same programmatically for the AlertController "Accept" Button.
Thank you in advance.
You need to implement the handler block to perform code when an action is selected :
#IBActionfunc showAlert() {
let alertController = UIAlertController(title: "Disclaimer", message: "Disclaimer Text Here", preferredStyle: .Alert)
let declineAction = UIAlertAction(title: "Decline", style: .Cancel, handler: nil)
alertController.addAction(declineAction)
let acceptAction = UIAlertAction(title: "Accept", style: .Default) { (_) -> Void in
let secondVC = SecondViewController(nibName: "SecondView", bundle: nil)
let navController = UINavigationController(rootViewController: secondVC)
self.presentViewController(navController, animated: true, completion: nil)
}
alertController.addAction(acceptAction)
presentViewController(alertController, animated: true, completion: nil)
}
Basically to link the UIAlertViewController button to a UINavigationController's UIViewController we would need to create a manual segue between the UIViewController which has the UIAlertViewController to the UINavigationController.
Please refer to this screen shot to see how to do the above -
Then select the link between the UIViewController and the UINavigationController. Go to the left sidebar and select the Attributes inspector and name the identifier.
Now write the following in your code -
#IBAction func showAlert() {
let alertController = UIAlertController(title: "Disclaimer", message: "Before using this teaching resource, you confirm that you agree:\n1. To obey the law regarding data protection and patient confidentiality.\n2. To us this app professionally and appropriately in clinical settings.\n3. This is for your personal use and you may not modify, distribute, publish, transfer any information obtained from this teaching resource without the developers' permission.\n4. In no event shall the developer be liable to you for any loss arising from your use of this resource.", preferredStyle: .Alert)
let declineAction = UIAlertAction(title: "Decline", style: .Cancel, handler: nil)
let acceptAction = UIAlertAction(title: "Accept", style: .Default) { (_) -> Void in
self.performSegueWithIdentifier("SomeSegue", sender: self) // Replace SomeSegue with your segue identifier (name)
}
alertController.addAction(declineAction)
alertController.addAction(acceptAction)
presentViewController(alertController, animated: true, completion: nil)
}
That's the use of the handler block. You should make your desired action in this block.
Edit: Code
let acceptAction = UIAlertAction(title: "Accept", style: .Default, handler:{ action in
//Write your code here
})
You can use this link as a reference: http://www.appcoda.com/uialertcontroller-swift-closures-enum/
The UIAlertViewController shows all my text but on clicking doesn't switch to the other View. Here's the code:
let alertController = UIAlertController(title: "Risposta Esatta", message:"", preferredStyle: UIAlertControllerStyle.Alert)
alertController.addAction(UIAlertAction(title: "Avanti", style:UIAlertActionStyle.Default,handler: {(UIAlertAction) in
let secondViewController:SecondViewController = SecondViewController()
self.presentViewController(secondViewController, animated: true, completion: nil)
}))
This just worked for me:
#IBAction func choiceBtn(sender: UIButton) {
let alertController = UIAlertController(title: "Hello!", message: "This is Alert sample.", preferredStyle: .Alert)
let otherAction = UIAlertAction(title: "OK", style: .Default) {
action in println("pushed OK!")
}
let cancelAction = UIAlertAction(title: "CANCEL", style: .Cancel) {
action in self.performSegueWithIdentifier("VC2", sender: self)
}
alertController.addAction(otherAction)
alertController.addAction(cancelAction)
presentViewController(alertController, animated: true, completion: nil)
}
I created a modal presented segue from VC1 to VC2 and also named the identifier VC2. This code I adapted from the GitHub UIAlertController example here:
https://github.com/eversense/Swift-UIAlertController-Example
There was no segue to another ViewController, so I added that to show you.