I have login alert connected to UIViewController called Intro the alert show up in home screen and in all tabBar views when the user click in one of them, the alert prevent user from using the app unless he sign up. I want to stop the alert from showing because I'm implementing it somewhere else.
I tried to delete/comment the code but that resulted in a lot of errors showing
// MARK: - SHOW LOGIN ALERT
func showLoginAlert(_ mess:String) {
let alert = UIAlertController(title: APP_NAME,
message: mess,
preferredStyle: .alert)
let ok = UIAlertAction(title: "Login", style: .default, handler: { (action) -> Void in
let aVC = self.storyboard?.instantiateViewController(withIdentifier: "Intro") as! Intro
self.present(aVC, animated: true, completion: nil)
})
alert.addAction(ok)
let cancel = UIAlertAction(title: "Cancel", style: .destructive, handler: { (action) -> Void in })
alert.addAction(cancel)
present(alert, animated: true, completion: nil)
}
// MARK: - FIRE A SIMPLE ALERT
func simpleAlert(_ mess:String) {
let alert = UIAlertController(title: APP_NAME,
message: mess, preferredStyle: .alert)
let ok = UIAlertAction(title: "OK", style: .default, handler: { (action) -> Void in })
alert.addAction(ok)
present(alert, animated: true, completion: nil)
}
Related
I have an alert-box, which returns a number of warnings that I'm having trouble, getting rid of.
let alert = UIAlertController(title: "Delete the group?", message: "The group is removed permanently", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Cancel", style: .default, handler: { [weak alert] (_) in
self.dismiss(animated: true, completion: nil)
}))
alert.addAction(UIAlertAction(title: "OK", style: .default, handler: { [weak alert] (_) in
// Perform the serverside action here and dismiss
}))
self.present(alert, animated: true, completion: nil)
Both addAction-lines returns a "Variable 'alert' is written to, but never read"-warning. I don't understand, since I use it in the "present"-line in the same scope.
Any ideas?
I have all my alerts in a separate class like so;
class AlertViewController {
func someAlert(with title: String?, message: String?, viewController: UIViewController) {
let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
let someAction = UIAlertAction(title: "Action Title", style: .default) { (_) in
//Perform your action here
}
alertController.addAction(someAction)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
alertController.addAction(cancelAction)
viewController.present(alertController, animated: true, completion: nil)
}
}
If you use the style: .cancel it will automatically dismiss the alert. Furthermore, as a better UX, including this .cancel will allow the user to tap anywhere on the view to dismiss the alert as well.
You can call this action where needed like so;
AlertViewController.someAlert(with: "Title", message: "Message", viewController: self)
Self is the UIViewController you wish to present upon.
I want to place my app icon into an alert controller above the alertTitle - same as for the alert that opens if an app review is called by SKStoreReviewController.requestReview().
I have not found any documentation about it.
So, what to do with the code below to let the App Icon appear?
let alertController = UIAlertController(title: alertHeaderText, message: alertText, preferredStyle: UIAlertController.Style.alert)
let option1: UIAlertAction = UIAlertAction(title: "text", style: .default, handler: {
(action) in
// some code
})
let option2: UIAlertAction = UIAlertAction(title: "text", style: .default, handler: {
(action) in
// some code
})
alertController.addAction(option1)
alertController.addAction(option2)
self.present(alertController, animated: true, completion: nil)
Why is the completion not working ?
After the alert appears, its not transitioning to the other viewController
self.present(self.alertController2, animated: true, completion: {
self.performSegue(withIdentifier:"goToLogin", sender: self)
})
Self.present using for add this action into view . You need to add this code into your handler handler mean It means what will I do when you click OK
let alertbutton = UIAlertAction(title: "OK", style: .destructive, handler: {
(UIAlertAction) in
self.performSegue(withIdentifier: "your id", sender: self)
})
Complete example :
let alert = UIAlertController(title: "Its empty", message: "Going another view", preferredStyle: .alert)
let alertaction = UIAlertAction(title: "OK", style: .destructive, handler: { (UIAlertAction) in
self.performSegue(withIdentifier: "your segue id", sender: self)
})
alert.addAction(alertaction)
self.present(alert, animated: true, completion: nil)
You should write code first move into new view code run then show alert in main thread for displaying alert.
DispatchQueue.main.async {
// AlertView.showAlert(title: Messages.Network.title, message: Messages.Network.message)
// }
Opening the UIAlertController on button click, the action is going to open but main issue is the UIAlertAction methods are not performed on its click. Here is Code block :
class HomeViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// getData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
//menuBtn is the button
#IBAction func menuBtn(sender: UIButton) {
let optionMenu = UIAlertController(title: nil, message: nil, preferredStyle: .ActionSheet)
let orders = UIAlertAction(title: "Orders", style: .Default, handler: { (alert: UIAlertAction!) -> Void in
let alertViewController = self.storyboard?.instantiateViewControllerWithIdentifier("OrdersViewController") as! OrdersViewController
self.presentViewController(alertViewController, animated: true, completion: nil)
})
let about = UIAlertAction(title: "About", style: .Default, handler: {(alert: UIAlertAction!) -> Void in
let aboutObject = self.storyboard?.instantiateViewControllerWithIdentifier("AboutViewController") as! AboutViewController
self.presentViewController(aboutObject, animated: true, completion: nil)
})
let contactUs = UIAlertAction(title: "Contact Us", style: .Default, handler: {(alert: UIAlertAction!) -> Void in
let alertViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ContactViewController") as! ContactViewController
self.presentViewController(alertViewController, animated: true, completion: nil)
})
let login = UIAlertAction(title: "LogIn", style: .Default, handler: {(alert: UIAlertAction!) -> Void in
let alertViewController = self.storyboard?.instantiateViewControllerWithIdentifier("LoginViewController") as! LoginViewController
self.presentViewController(alertViewController, animated: true, completion: nil)
})
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)
optionMenu.addAction(orders)
optionMenu.addAction(about)
optionMenu.addAction(contactUs)
optionMenu.addAction(login)
optionMenu.addAction(cancelAction)
self.presentViewController(optionMenu, animated: true, completion: nil)
}
This is code is working fine, I have checked it's opening new viewController as well.
Cross check points:
Controller class and stroybaord are connected
Storyboard ID has been assigned
IBAction must be connected to IBOutlet
On the Button click Action you have to write code.. Try This code.
let alert = UIAlertController(title: "Saved", message: "Selected Frame is Saved", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "Ok", style:.Default , handler: { (UIAlertAction) in
}))
//Add action like this
self.presentViewController(alert, animated: true, completion: nil)
Still need any help feel free to ask.
First of all check if the button action is touch up inside. Make the button action as touch up inside. Below code works for me. Hope this works for you as well. Change the action title according to your need.
#IBAction func menuBtn(sender: AnyObject) {
let actionSheet = UIAlertController()
let criticalAction = UIAlertAction(title : "CRITICAL" , style : UIAlertActionStyle.Default){
(action) in
//This section will be executed when the buttons are pressed
//Do your work here.
debugPrint("CRITICAL")
}
let highAction = UIAlertAction(title : "HIGH" , style : UIAlertActionStyle.Default){
(action) in
//This section will be executed when the buttons are pressed
//Do your work here.
debugPrint("HIGH")
}
actionSheet.addAction(criticalAction)
actionSheet.addAction(highAction)
self.presentViewController(actionSheet, animated: true, completion: nil)
}
I am trying to change view controller if the login is successful but I am unsure how to do this. This is what i have tried so far. Thanks in advance!
#IBAction func signinaction(sender: AnyObject) {
let user = self.usernamefield.text!
ref.authUser(emailfield.text, password: passwordfield.text, withCompletionBlock: { error, authData in
if error != nil
{
let alert = UIAlertController(title: "Error", message: "Enter Email and Password.", preferredStyle: UIAlertControllerStyle.Alert)
let action = UIAlertAction(title: "Ok", style: .Default, handler: nil)
alert.addAction(action)
self.presentViewController(alert, animated: true, completion: nil)
print("can not sign in")
}
else
{
let storyboard = UIStoryboard(name: "Main", bundle: nil);
let viewName:NSString = "NewView"
let vc = storyboard.instantiateViewControllerWithIdentifier(viewName as String) as! HomeViewController
let uid = authData.uid
print("Success with user: \(uid)")
let alert = UIAlertController(title: "Success", message: "Welcome \(user)", preferredStyle: UIAlertControllerStyle.Alert)
let action = UIAlertAction(title: "Ok", style: .Default, handler: nil)
alert.addAction(action)
self.navigationController?.pushViewController(vc as HomeViewController, animated: true)
}
})
}
Assuming that the view controller all of this is in is contained in a navigation controller, what you have should be working fine. Note, however that you're creating an alert you never show. My guess is that you want to display the success alert and then open the new view controller, something like:
let alert = UIAlertController(title: "Success", message: "Welcome \(user)", preferredStyle: UIAlertControllerStyle.Alert)
let action = UIAlertAction(title: "Ok", style: .Default) { _ in
self.navigationController?.pushViewController(vc, animated: true)
}
alert.addAction(action)
self.presentViewController(alert, animated: true, completion: nil)
If this still isn't working, I'd make sure the current view controller is actually displayed in a navigation controller.
Looks like you just need to add the navigation code inside of the alert action. Currently you have the handler parameter set to nil
this
let action = UIAlertAction(title: "Ok", style: .Default, handler: nil)
becomes this
let alertAction = UIAlertAction(title: "Ok", style: .Default) { (action) -> Void in
self.navigationController?.pushViewController(vc as HomeViewController, animated: true)
}