How to show selected action in UIAlertAction? - ios

I am trying to achieve the view with a few green actions, and get the selected action to be bold in UIAlertController. And one of the actions, which is dismiss button has to be divided from others and be colored with red.
I am trying to add them with the styles .cancel allows to show dismiss button, but it is bold, but green.
How do I achieve this?
expected view:
my current code:
let alertController
= UIAlertController(title: nil,
message: nil,
preferredStyle: .actionSheet)
let sortByDateAction = UIAlertAction(title: "По дате",
style: .default,
handler: {(action: UIAlertAction!) in
if self.sortBy != "date" {
self.page = 1
self.sortBy = "date"
self.loadTenders()
}
})
let moreExpensiveSortAction = UIAlertAction(title: "Дороже",
style: .destructive,
handler: {(action: UIAlertAction!) in
if self.sortBy != "priceHigh" {
self.page = 1
self.sortBy = "priceHigh"
self.loadTenders()
}
})
let cheaperSortAction = UIAlertAction(title: "Дешевле",
style: .default,
handler: {(action: UIAlertAction!) in
if self.sortBy != "priceLow" {
self.page = 1
self.sortBy = "priceLow"
self.loadTenders()
}
})
alertController
.addAction(sortByDateAction)
alertController
.addAction(moreExpensiveSortAction)
alertController
.addAction(cheaperSortAction)
alertController.preferredAction = sortByDateAction
alertController
.addAction(UIAlertAction(title: "Dismiss",
style: .cancel,
handler: nil))

let cancelAlert = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel, handler:nil)
cancelAlert.setValue(UIColor.red, forKey: "titleTextColor")
alertController.addAction(cancelAlert)
try this code.

The color of the text in the action sheet is nothing but the tint color of the view. Set this as per your color requirement.
Furthermore, To change the font color of cancel button: Set the value for the titleTextColor property of the UIAlertAction
Here is a sample code:
func showCaptureOptions() {
let actionSheet = UIAlertController(title: "Capture Type", message: "", preferredStyle: .actionSheet)
let cameraAction = UIAlertAction(title: "Camera", style: .default) { [weak self](action) in
self?.initializeImagePicker(captureType: .camera)
}
let photoLibraryAction = UIAlertAction(title: "Photo Library", style: .default) { [weak self](action) in
self?.initializeImagePicker(captureType: .photoLibrary)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (action) in
}
cancelAction.setValue(UIColor.red, forKey: "titleTextColor"). /// The cancel button will be red
actionSheet.view.tintColor = UIColor.green /// The action sheet options would be green
actionSheet.addAction(cameraAction)
actionSheet.addAction(photoLibraryAction)
actionSheet.addAction(cancelAction)
DispatchQueue.main.async {
self.present(actionSheet, animated: true, completion: nil)
}
}

Related

Cropped characters - iOS11 - Alert Dialog

Cropped characters - iOS11 - Alert Dialog.
How to fix it?
[
func settingsButtonPressed() {
let alert = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
let closeAction = UIAlertAction(title: "Anuluj", style: .cancel) { (action) in
//do nothing
}
alert.addAction(closeAction)
let restorePurchases = UIAlertAction(title: "Przywróć zakupy", style: .default) { (action) in
self.restorePurchases()
}
alert.addAction(restorePurchases)
let refreshCatalogs = UIAlertAction(title: "Odśwież", style: .default) { (action) in
self.collectionView.reloadData()
}
alert.addAction(refreshCatalogs)
let delPubs = UIAlertAction(title: "Usuń publikacje", style: .destructive) { (action) in
self.deletePublications()
}
alert.addAction(delPubs)
present(alert, animated: true, completion: nil)
}
Try to use NSLocalizedString instead of hardcoded values. Usage article here.
Then just define your titles like that:
let cancelButtonText = NSLocalizedString("Cancel", comment: "")
And set it:
let cancelAction = UIAlertAction(title: cancelButtonText, style: .cancel, handler: nil)

Warning - Attempt to present UIAlertController null in Swift

I have an UIAlertController running in my project which is connected through UIButton.My code works ok.But,Everytime when I pressed the button Xcode console printing an alert as below and I went through all the similar question been asked in stackOverflow but no answer.Attempt to present UIAlertController on UIViewController whose view is not in the window hierarchy
2016-10-03 19:14:35.854 xxxxxx[85186:7214348] Warning: Attempt to present<UIAlertController: 0x7f8d99450820> on <yyyyyyy.ViewController: 0x7f8d9a025200> which is already presenting (null)
My Code Below:
override func viewDidLoad() {
super.viewDidLoad()
self.moreButton.frame = CGRect(x:view.frame.width / 2, y: view.frame.height / 2, width: 100, height: 40)
moreButton.center = view.center
moreButton.backgroundColor = UIColor.darkText.withAlphaComponent(0.4)
moreButton.layer.masksToBounds = true
moreButton.setTitle("More", for: UIControlState())
moreButton.setTitleColor(UIColor.white, for: UIControlState())
moreButton.showsTouchWhenHighlighted = true
moreButton.layer.cornerRadius = 5.0
moreButton.addTarget(self, action: #selector(ViewController.moreButtonAction(_:)), for: .allTouchEvents)
self.view.addSubview(self.moreButton)
}
func moreButtonAction(_ sender: UIButton) {
DispatchQueue.main.async(execute: {
let myAlert = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.actionSheet)
myAlert.view.tintColor = UIColor.purple.withAlphaComponent(0.8)
let myAction_1 = UIAlertAction(title: " Title 1", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
})
let myAction_2 = UIAlertAction(title: " Title 2", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
})
let myAction_3 = UIAlertAction(title: " Title 3", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
})
let myAction_4 = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: {
(action: UIAlertAction!) in
})
myAlert.addAction(myAction_1)
myAlert.addAction(myAction_2)
myAlert.addAction(myAction_3)
myAlert.addAction(myAction_4)
self.present(myAlert, animated: true, completion: nil)
})
}
Thanks in Advance
The error is telling you that you are trying to present an alertController that is already active. You could check if your controller has an active alert otherwise show it. This will remove the warning. So basically move your self.present row with the following:
if !(self.navigationController?.visibleViewController?.isKind(of: UIAlertController.self))! {
self.present(myAlert, animated: true, completion: nil)
}
Replace your moreActionButton function with the following:
func moreButtonAction(_ sender: UIButton) {
let myAlert = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.actionSheet)
myAlert.view.tintColor = UIColor.purple.withAlphaComponent(0.8)
let myAction_1 = UIAlertAction(title: " Title 1", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
})
let myAction_2 = UIAlertAction(title: " Title 2", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
})
let myAction_3 = UIAlertAction(title: " Title 3", style: UIAlertActionStyle.default, handler: {
(action: UIAlertAction!) in
print("3")
})
let myAction_4 = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.cancel, handler: {
(action: UIAlertAction!) in
})
myAlert.addAction(myAction_1)
myAlert.addAction(myAction_2)
myAlert.addAction(myAction_3)
myAlert.addAction(myAction_4)
if !(self.navigationController?.visibleViewController?.isKind(of: UIAlertController.self))! {
self.present(myAlert, animated: true, completion: nil)
}
}

Change UIImage Picker Button Label Text

The default text on the button for a user to confirm a picture when using the .Camera option for the UIImagePicker is "Use Picture".
Is there any way to change this to some other string?
func chooseAlert(){
let alert = UIAlertController(title: "Upload Image", message: "Choose Source For Image.", preferredStyle: .ActionSheet)
let cameraAction = UIAlertAction(title: "Take Photo", style: .Default, handler: { (action:UIAlertAction) -> Void in
dispatch_async(dispatch_get_main_queue())
{
// self.performSelector(#selector(self.useCamera), withObject: nil, afterDelay: 1.0)
self.useCamera()
}
})
let cameraRollAction = UIAlertAction(title: "Use Photo", style: .Default, handler: { (action:UIAlertAction) -> Void in
dispatch_async(dispatch_get_main_queue())
{
self.useCameraRoll()
}
})
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel){
(action) in
print(action)
}
alert.addAction(cameraAction)
alert.addAction(cameraRollAction)
alert.addAction(cancelAction)
presentViewController(alert, animated: true, completion: nil)
}
In the IBAction of the Button call this function which will bring an alert on the screen. In the alert actions, change the title as per your wish. useCamera() and useCameraRoll() are user defined functions.

How to present iOS UIActionSheet in Swift?

How can I present a UIActionSheet in Swift within an iOS app?
Here is my code for displaying a UIActionSheet:
#IBAction func downloadSheet(sender: AnyObject) {
let optionMenu = UIAlertController(title: nil, message: "Choose Option", preferredStyle: .actionSheet)
let saveAction = UIAlertAction(title: "Save", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
println("Saved")
})
let deleteAction = UIAlertAction(title: "Delete", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
println("Deleted")
})
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: {
(alert: UIAlertAction!) -> Void in
println("Cancelled")
})
optionMenu.addAction(deleteAction)
optionMenu.addAction(saveAction)
optionMenu.addAction(cancelAction)
self.presentViewController(optionMenu, animated: true, completion: nil)
}
Updated for Swift 4/5
Works for iOS 11-14
Some of the other answers are okay but I ended up mixing and matching a few of them to rather come up with this :
#IBAction func showAlert(sender: AnyObject) {
let alert = UIAlertController(title: "Title", message: "Please Select an Option", preferredStyle: .actionSheet)
alert.addAction(UIAlertAction(title: "Approve", style: .default , handler:{ (UIAlertAction)in
print("User click Approve button")
}))
alert.addAction(UIAlertAction(title: "Edit", style: .default , handler:{ (UIAlertAction)in
print("User click Edit button")
}))
alert.addAction(UIAlertAction(title: "Delete", style: .destructive , handler:{ (UIAlertAction)in
print("User click Delete button")
}))
alert.addAction(UIAlertAction(title: "Dismiss", style: .cancel, handler:{ (UIAlertAction)in
print("User click Dismiss button")
}))
//uncomment for iPad Support
//alert.popoverPresentationController?.sourceView = self.view
self.present(alert, animated: true, completion: {
print("completion block")
})
}
Enjoy :)
Your Approach is fine, but you can add UIActionSheet with other way with ease.
You can add UIActionSheetDelegate in UIViewController` like
class ViewController: UIViewController ,UIActionSheetDelegate
Set you method like,
#IBAction func downloadSheet(sender: AnyObject)
{
let actionSheet = UIActionSheet(title: "Choose Option", delegate: self, cancelButtonTitle: "Cancel", destructiveButtonTitle: nil, otherButtonTitles: "Save", "Delete")
actionSheet.showInView(self.view)
}
You can get your button index when it clicked like
func actionSheet(actionSheet: UIActionSheet, clickedButtonAtIndex buttonIndex: Int)
{
println("\(buttonIndex)")
switch (buttonIndex){
case 0:
println("Cancel")
case 1:
println("Save")
case 2:
println("Delete")
default:
println("Default")
//Some code here..
}
}
Update 1: for iOS8+
//Create the AlertController and add Its action like button in Actionsheet
let actionSheetControllerIOS8: UIAlertController = UIAlertController(title: "Please select", message: "Option to select", preferredStyle: .ActionSheet)
let cancelActionButton = UIAlertAction(title: "Cancel", style: .cancel) { _ in
print("Cancel")
}
actionSheetControllerIOS8.addAction(cancelActionButton)
let saveActionButton = UIAlertAction(title: "Save", style: .default)
{ _ in
print("Save")
}
actionSheetControllerIOS8.addAction(saveActionButton)
let deleteActionButton = UIAlertAction(title: "Delete", style: .default)
{ _ in
print("Delete")
}
actionSheetControllerIOS8.addAction(deleteActionButton)
self.present(actionSheetControllerIOS8, animated: true, completion: nil)
UIActionSheet is deprecated in iOS 8.
I am using following:
// Create the AlertController
let actionSheetController = UIAlertController(title: "Please select", message: "How you would like to utilize the app?", preferredStyle: .ActionSheet)
// Create and add the Cancel action
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) { action -> Void in
// Just dismiss the action sheet
}
actionSheetController.addAction(cancelAction)
// Create and add first option action
let takePictureAction = UIAlertAction(title: "Consumer", style: .Default) { action -> Void in
self.performSegueWithIdentifier("segue_setup_customer", sender: self)
}
actionSheetController.addAction(takePictureAction)
// Create and add a second option action
let choosePictureAction = UIAlertAction(title: "Service provider", style: .Default) { action -> Void in
self.performSegueWithIdentifier("segue_setup_provider", sender: self)
}
actionSheetController.addAction(choosePictureAction)
// We need to provide a popover sourceView when using it on iPad
actionSheetController.popoverPresentationController?.sourceView = sender as UIView
// Present the AlertController
self.presentViewController(actionSheetController, animated: true, completion: nil)
Updated for Swift 3.x, Swift 4.x, Swift 5.x
// create an actionSheet
let actionSheetController: UIAlertController = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
// create an action
let firstAction: UIAlertAction = UIAlertAction(title: "First Action", style: .default) { action -> Void in
print("First Action pressed")
}
let secondAction: UIAlertAction = UIAlertAction(title: "Second Action", style: .default) { action -> Void in
print("Second Action pressed")
}
let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in }
// add actions
actionSheetController.addAction(firstAction)
actionSheetController.addAction(secondAction)
actionSheetController.addAction(cancelAction)
// present an actionSheet...
// present(actionSheetController, animated: true, completion: nil) // doesn't work for iPad
actionSheetController.popoverPresentationController?.sourceView = yourSourceViewName // works for both iPhone & iPad
present(actionSheetController, animated: true) {
print("option menu presented")
}
Update for Swift 3:
// Create the AlertController and add its actions like button in ActionSheet
let actionSheetController = UIAlertController(title: "Please select", message: "Option to select", preferredStyle: .actionSheet)
let cancelActionButton = UIAlertAction(title: "Cancel", style: .cancel) { action -> Void in
print("Cancel")
}
actionSheetController.addAction(cancelActionButton)
let saveActionButton = UIAlertAction(title: "Save", style: .default) { action -> Void in
print("Save")
}
actionSheetController.addAction(saveActionButton)
let deleteActionButton = UIAlertAction(title: "Delete", style: .default) { action -> Void in
print("Delete")
}
actionSheetController.addAction(deleteActionButton)
self.present(actionSheetController, animated: true, completion: nil)
Generetic Action Sheet working for Swift 4, 4.2, 5
If you like a generic version that you can call from every ViewController and in every project try this one:
class Alerts {
static func showActionsheet(viewController: UIViewController, title: String, message: String, actions: [(String, UIAlertActionStyle)], completion: #escaping (_ index: Int) -> Void) {
let alertViewController = UIAlertController(title: title, message: message, preferredStyle: .actionSheet)
for (index, (title, style)) in actions.enumerated() {
let alertAction = UIAlertAction(title: title, style: style) { (_) in
completion(index)
}
alertViewController.addAction(alertAction)
}
// iPad Support
alertViewController.popoverPresentationController?.sourceView = viewController.view
viewController.present(alertViewController, animated: true, completion: nil)
}
}
Call like this in your ViewController.
var actions: [(String, UIAlertActionStyle)] = []
actions.append(("Action 1", UIAlertActionStyle.default))
actions.append(("Action 2", UIAlertActionStyle.destructive))
actions.append(("Action 3", UIAlertActionStyle.cancel))
//self = ViewController
Alerts.showActionsheet(viewController: self, title: "D_My ActionTitle", message: "General Message in Action Sheet", actions: actions) { (index) in
print("call action \(index)")
/*
results
call action 0
call action 1
call action 2
*/
}
Attention: Maybe you're wondering why I add Action 1/2/3 but got results like 0,1,2. In the line for (index, (title, style)) in actions.enumerated() I get the index of actions. Arrays always begin with the index 0. So the completion is 0,1,2.
If you like to set a enum, an id or another identifier I would recommend to hand over an object in parameter actions.
Action Sheet in iOS10 with Swift3.0. Follow this link.
#IBAction func ShowActionSheet(_ sender: UIButton) {
// Create An UIAlertController with Action Sheet
let optionMenuController = UIAlertController(title: nil, message: "Choose Option from Action Sheet", preferredStyle: .actionSheet)
// Create UIAlertAction for UIAlertController
let addAction = UIAlertAction(title: "Add", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
print("File has been Add")
})
let saveAction = UIAlertAction(title: "Edit", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
print("File has been Edit")
})
let deleteAction = UIAlertAction(title: "Delete", style: .default, handler: {
(alert: UIAlertAction!) -> Void in
print("File has been Delete")
})
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: {
(alert: UIAlertAction!) -> Void in
print("Cancel")
})
// Add UIAlertAction in UIAlertController
optionMenuController.addAction(addAction)
optionMenuController.addAction(saveAction)
optionMenuController.addAction(deleteAction)
optionMenuController.addAction(cancelAction)
// Present UIAlertController with Action Sheet
self.present(optionMenuController, animated: true, completion: nil)
}
2022 Swift 5
func yourActionSheet() -> UIAlertController {
let alert = UIAlertController(title: "Your title",
message: nil,
preferredStyle: .actionSheet)
alert.addAction(UIAlertAction(title: "Your action 1",
style: .default) { _ in
// onAction1()
})
alert.addAction(UIAlertAction(title: "Your action 2",
style: .default) { _ in
// onAction2()
})
alert.addAction(UIAlertAction(title: "Your cancel action",
style: .cancel) { _ in
// onCancel
})
return alert
}
SWIFT 4
WORKS ON IPHONE AND IPAD BOTH. ALSO ALLOWS ROTATION
LANDSCAPE
PORTRAIT
Code (tested)
let alert = UIAlertController()
let width: Int = Int(UIScreen.main.bounds.width - 100)
let viewAction = UIAlertAction(title: "View", style: .default , handler:{ (UIAlertAction)in
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let orderDetailVC = storyboard.instantiateViewController(withIdentifier: "orderDetail") as! OrderDetailTableViewController
orderDetailVC.orderId = self.myDraftOrders[indexPath.row]["id"].intValue
self.navigationController?.pushViewController(orderDetailVC, animated: true)
})
viewAction.setValue(appGreenColor, forKey: "titleTextColor")
alert.addAction(viewAction)
let modifyAction = UIAlertAction(title: "Modify", style: .default, handler:{ (UIAlertAction)in
showAlert("Coming soon...")
})
modifyAction.setValue(appCyanColor, forKey: "titleTextColor")
alert.addAction(modifyAction)
let copyAction = UIAlertAction(title: "Copy", style: .default, handler:{ (UIAlertAction)in
self.copyOrder(orderId: self.myDraftOrders[indexPath.row]["id"].intValue)
})
copyAction.setValue(appBlueColor, forKey: "titleTextColor")
alert.addAction(copyAction)
alert.addAction(UIAlertAction(title: "Delete", style: .destructive , handler:{ (UIAlertAction)in
self.deleteOrder(orderId: self.myDraftOrders[indexPath.row]["id"].intValue, indexPath: indexPath)
}))
alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler:{ (UIAlertAction)in
print("User click Dismiss button")
}))
let popover = alert.popoverPresentationController
popover?.delegate = self
let cellT = tableView.cellForRow(at: indexPath)
popover?.sourceView = cellT
popover?.sourceRect = CGRect(x: width, y: 25, width: 100, height: 50)
present(alert, animated: true)
Swift :
The sample code given below works both on iPhone and iPad.
guard let viewRect = sender as? UIView else {
return
}
let cameraSettingsAlert = UIAlertController(title: NSLocalizedString("Please choose a course", comment: ""), message: NSLocalizedString("", comment: ""), preferredStyle: .ActionSheet)
cameraSettingsAlert.modalPresentationStyle = .Popover
let photoResolutionAction = UIAlertAction(title: NSLocalizedString("Photo Resolution", comment: ""), style: .Default) { action in
}
let cameraOrientationAction = UIAlertAction(title: NSLocalizedString("Camera Orientation", comment: ""), style: .Default) { action in
}
let flashModeAction = UIAlertAction(title: NSLocalizedString("Flash Mode", comment: ""), style: .Default) { action in
}
let timeStampOnPhotoAction = UIAlertAction(title: NSLocalizedString("Time Stamp on Photo", comment: ""), style: .Default) { action in
}
let cancel = UIAlertAction(title: NSLocalizedString("Cancel", comment: ""), style: .Cancel) { action in
}
cameraSettingsAlert.addAction(cancel)
cameraSettingsAlert.addAction(cameraOrientationAction)
cameraSettingsAlert.addAction(flashModeAction)
cameraSettingsAlert.addAction(timeStampOnPhotoAction)
cameraSettingsAlert.addAction(photoResolutionAction)
if let presenter = cameraSettingsAlert.popoverPresentationController {
presenter.sourceView = viewRect;
presenter.sourceRect = viewRect.bounds;
}
presentViewController(cameraSettingsAlert, animated: true, completion: nil)
The Old Way: UIActionSheet
let actionSheet = UIActionSheet(title: "Takes the appearance of the bottom bar if specified; otherwise, same as UIActionSheetStyleDefault.", delegate: self, cancelButtonTitle: "Cancel", destructiveButtonTitle: "Destroy", otherButtonTitles: "OK")
actionSheet.actionSheetStyle = .Default
actionSheet.showInView(self.view)
// MARK: UIActionSheetDelegate
func actionSheet(actionSheet: UIActionSheet, clickedButtonAtIndex buttonIndex: Int) {
switch buttonIndex {
...
}
}
The New Way: UIAlertController
let alertController = UIAlertController(title: nil, message: "Takes the appearance of the bottom bar if specified; otherwise, same as UIActionSheetStyleDefault.", preferredStyle: .ActionSheet)
let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel) { (action) in
// ...
}
alertController.addAction(cancelAction)
let OKAction = UIAlertAction(title: "OK", style: .Default) { (action) in
// ...
}
alertController.addAction(OKAction)
let destroyAction = UIAlertAction(title: "Destroy", style: .Destructive) { (action) in
println(action)
}
alertController.addAction(destroyAction)
self.presentViewController(alertController, animated: true) {
// ...
}
Swift 3
For displaying UIAlertController from UIBarButtonItem on iPad
let alert = UIAlertController(title: "Title", message: "Please Select an Option", preferredStyle: .actionSheet)
alert.addAction(UIAlertAction(title: "Approve", style: .default , handler:{ (UIAlertAction)in
print("User click Approve button")
}))
alert.addAction(UIAlertAction(title: "Edit", style: .default , handler:{ (UIAlertAction)in
print("User click Edit button")
}))
alert.addAction(UIAlertAction(title: "Delete", style: .destructive , handler:{ (UIAlertAction)in
print("User click Delete button")
}))
alert.addAction(UIAlertAction(title: "Dismiss", style: UIAlertActionStyle.cancel, handler:{ (UIAlertAction)in
print("User click Dismiss button")
}))
if let presenter = alert.popoverPresentationController {
presenter.barButtonItem = sender
}
self.present(alert, animated: true, completion: {
print("completion block")
})
swift4 (tested)
let alertController = UIAlertController(title: "Select Photo", message: "Select atleast one photo", preferredStyle: .actionSheet)
let action1 = UIAlertAction(title: "From Photo", style: .default) { (action) in
print("Default is pressed.....")
}
let action2 = UIAlertAction(title: "Cancel", style: .cancel) { (action) in
print("Cancel is pressed......")
}
let action3 = UIAlertAction(title: "Click new", style: .default) { (action) in
print("Destructive is pressed....")
}
alertController.addAction(action1)
alertController.addAction(action2)
alertController.addAction(action3)
self.present(alertController, animated: true, completion: nil)
}
Code for adding alerts to actionsheet in swift4
*That means when we click actionsheet values(like edit/ delete..so on) it shows
an alert option that is set with Yes or No option*
class ViewController: UIViewController
{
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
#IBAction func action_sheet1(_ sender: Any) {
let action_sheet1 = UIAlertController(title: "Hi Bro", message: "Please Select an Option: ", preferredStyle: .actionSheet)
action_sheet1.addAction(UIAlertAction(title: "Approve", style: .default , handler:{ (alert: UIAlertAction!) -> Void in
print("User click Approve button")
let alert = UIAlertController(title: "Approve", message: "Would you like to approve the file ", preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "No", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}))
action_sheet1.addAction(UIAlertAction(title: "Edit", style: .default , handler:{ (alert: UIAlertAction!) -> Void in
print("User click Edit button")
let alert = UIAlertController(title: "Edit", message: "Would you like to edit the file ", preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "No", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}))
action_sheet1.addAction(UIAlertAction(title: "Delete", style: .destructive , handler: { (alert: UIAlertAction!) -> Void in
print("User click Delete button")
let alert = UIAlertController(title: "Delete", message: "Would you like to delete the file permenently?", preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "No", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}))
action_sheet1.addAction(UIAlertAction(title: "cancel", style: .cancel, handler:{ (alert: UIAlertAction!) -> Void in
print("User click cancel button")
let alert = UIAlertController(title: "Cancel", message: "Would you like to cancel?", preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "No", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}))
self.present(action_sheet1, animated: true, completion: {
print("completion block")
})
}
}
Useful to populate dynamic actions list, and listen to selected action:
var categories = ["Science", "History", "Industry", "Agriculture"]
var handlerSelectedCategory: ((Int) -> ())?
func prepareActions(for title: String, index: Int) -> UIAlertAction {
let alertAction = UIAlertAction(title: title, style: .default) { (action) in
self.handlerSelectedCategory?(index)
}
return alertAction
}
#objc func presentActions() {
let optionMenu = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
// add dymamic options
for (index, element) in self.categories.enumerated() {
optionMenu.addAction(prepareActions(for: element, index: index))
}
// cancel
let cancelAction = UIAlertAction(title: "Cancel", style: .destructive)
optionMenu.addAction(cancelAction)
handlerSelectedCategory = { index in
print(index, self.categories[index])
}
self.present(optionMenu, animated: true, completion: nil)
}
You can use following code for Alert and ActionSheet in Swift 4:
#IBAction func alert_act(_ sender: Any) {
do {
let alert = UIAlertController(title: "Alert", message: "Would you like to continue learning?", preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "No", style: UIAlertAction.Style.default, handler: nil))
alert.addAction(UIAlertAction(title: "Yes", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}
}
#IBAction func action_sheet1(_ sender: Any) {
let action_sheet1 = UIAlertController(title: nil, message: "Alert message.", preferredStyle: .actionSheet)
let defaultAction = UIAlertAction(title: "Default", style: .default, handler: nil)
let deleteAction = UIAlertAction(title: "Delete", style: .destructive, handler: nil)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
action_sheet1.addAction(defaultAction)
action_sheet1.addAction(deleteAction)
action_sheet1.addAction(cancelAction)
self.present(action_sheet1, animated: true, completion: nil)
}
Swift 5+
Very Simple and Smooth way just call this function and Boommmmmm!!!!!!!
let IPAD = UIDevice.current.userInterfaceIdiom == .pad
//Mark:- Choose Image Method
func funcMyActionSheet() {
var myActionSheet = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertController.Style.actionSheet)
myActionSheet.view.tintColor = UIColor.black
let galleryAction = UIAlertAction(title: "Gallery".localizableString(language: Defaults.selectedLanguageCode), style: .default, handler: {
(alert: UIAlertAction!) -> Void in
self.openGallary()
})
let cmaeraAction = UIAlertAction(title: "Camera".localizableString(language: Defaults.selectedLanguageCode), style: .default, handler: {
(alert: UIAlertAction!) -> Void in
self.openCamera()
})
let cancelAction = UIAlertAction(title: "Cancel".localizableString(language: Defaults.selectedLanguageCode), style: .cancel, handler: {
(alert: UIAlertAction!) -> Void in
})
if IPAD {
//In iPad Change Rect to position Popover
myActionSheet = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertController.Style.alert)
}
myActionSheet.addAction(galleryAction)
myActionSheet.addAction(cmaeraAction)
myActionSheet.addAction(cancelAction)
print("Action Sheet call")
self.present(myActionSheet, animated: true, completion: nil)
}
You can use following code for open actionSheet in Swift:
let alert = UIAlertController(title: enter your title, message: "Enter your messgage. ", preferredStyle: UIAlertControllerStyle.Alert)
alert.addTextFieldWithConfigurationHandler(configurationTextField)
alert.addAction(UIAlertAction(title: "Close", style: UIAlertActionStyle.Cancel, handler:{ (UIAlertAction)in
print("User click Cancel button")
}))
alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.Default, handler:{ (UIAlertAction)in
print("User click Ok button")
}))
self.presentViewController(alert, animated: true, completion: {
print("completion block")
})

Use UIAlertAction to increment badge on Tab Bar with Swift

#IBAction func addToCart(sender: AnyObject) {
let itemObjectTitle = itemObject.valueForKey("itemDescription") as! String
let alertController = UIAlertController(title: "Add \(itemObjectTitle) to cart?", message: "", preferredStyle: .Alert)
let yesAction = UIAlertAction(title: "Yes", style: UIAlertActionStyle.Default) { (action) in
var badgeNumber = 0
self.navigationController!.tabBarItem.badgeValue == "\(badgeNumber++)"
}
let cancelAction = UIAlertAction(title: "Cancel", style: .Default, handler: nil)
alertController.addAction(yesAction)
alertController.addAction(cancelAction)
presentViewController(alertController, animated: true, completion: nil)
}
I need the selection of "Yes" on the alert to increment a badge on a Tab Bar Item every time it is pressed, has anyone had this problem?
let yesAction = UIAlertAction(title: "Yes", style: .Default) { action in
// Your code to update the tab bar here
}
Alternative:
UIAlertAction(title: "Yes",
style: UIAlertActionStyle.Default,
handler: { // Code goes here
})

Resources