I am a novice in swift and XCode so please forgive me the probably really messy code! When running my code I get the following warning: Warning: Attempt to present on which is already presenting
I have already checked the forum and found a post regarding that issue....I applied the help suggested as in:
if presentedViewController !== nil {
self.presentViewController(alertController, animated: true, completion: nil)
} else{
self.dismissViewControllerAnimated(false, completion: nil)
self.presentViewController(alertController, animated: true, completion: nil)
}
However, it still gives me the same warning....So I guess I must have done something wrong there. It would be great if someone could help me out please :) Also if there any suggestion as to how I can "clean" up my code are appreciated :)
import UIKit
class ViewController: UIViewController {
@IBOutlet var Label: UILabel!
@IBOutlet var ukFlag: UITextView!
@IBOutlet var movie: UITextView!
@IBOutlet var piano: UITextView!
@IBOutlet var book: UITextView!
@IBOutlet var dance: UITextView!
@IBOutlet var paint: UITextView!
@IBOutlet var row: UITextView!
@IBOutlet var envelope: UITextView!
@IBOutlet var dragon: UITextView!
@IBOutlet var instagram: UITextView!
func londonPuzzle(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func misleadOne(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func bestival(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func rosieProject(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func misleadTwo(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func misleadThree(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func misleadFour(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func voucher(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func welsh(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func hulk(sender: UIPanGestureRecognizer) {
let translation = sender.translationInView(self.view)
sender.view!.center = CGPoint(x: sender.view!.center.x + translation.x, y: sender.view!.center.y + translation.y)
sender.setTranslation(CGPointZero, inView: self.view)
self.ifCollided()
}
func ShowAlertWrong(){
let alertController = UIAlertController(title: "Sorry", message: " Guess again!", preferredStyle: .Alert)
let okAction = UIAlertAction( title: "Ok", style: UIAlertActionStyle.Default) {
UIAlertAction in
self.ukFlag.center = CGPointMake(150, 225)
self.movie.center = CGPointMake(150, 225)
self.piano.center = CGPointMake(150, 225)
self.dance.center = CGPointMake(150, 225)
self.paint.center = CGPointMake(150, 225)
self.row.center = CGPointMake(150, 225)
self.envelope.center = CGPointMake(150, 225)
self.dragon.center = CGPointMake(150, 225)
self.instagram.center = CGPointMake(150, 225)
}
let resetAction = UIAlertAction( title: "Reset", style: UIAlertActionStyle.Default) {
UIALertAction in
self.ukFlag.center = CGPointMake(150, 225)
self.movie.center = CGPointMake(150, 225)
self.piano.center = CGPointMake(150, 225)
self.dance.center = CGPointMake(150, 225)
self.paint.center = CGPointMake(150, 225)
self.row.center = CGPointMake(150, 225)
self.envelope.center = CGPointMake(150, 225)
self.dragon.center = CGPointMake(150, 225)
self.instagram.center = CGPointMake(150, 225)
}
alertController.addAction(okAction)
alertController.addAction(resetAction)
self.presentViewController(alertController, animated: true, completion: nil)
}
func ShowAlertWin(){
let alertController = UIAlertController(title: "Congrats🎉", message: " You are correct!👏🏻", preferredStyle: .Alert)
let okAction = UIAlertAction( title: "Ok", style: UIAlertActionStyle.Default) {
UIAlertAction in
self.book.center = CGPointMake(150, 150)
}
/* let resetAction = UIAlertAction( title: "Reset and hope the mood has changed", style: UIAlertActionStyle.Default) {
UIALertAction in
self.Angry.center = CGPointMake(150, 150)
}*/
alertController.addAction(okAction)
// alertController.addAction(resetAction)
if presentedViewController !== nil {
self.presentViewController(alertController, animated: true, completion: nil)
} else{
self.dismissViewControllerAnimated(false, completion: nil)
self.presentViewController(alertController, animated: true, completion: nil)
}
}
@IBAction func ifCollided(){
if CGRectIntersectsRect(Label.frame, ukFlag.frame) {
ShowAlertWrong()
}
else if CGRectIntersectsRect(Label.frame, movie.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, piano.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, dance.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, paint.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, row.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, envelope.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, dragon.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, instagram.frame){
ShowAlertWrong()
} else if CGRectIntersectsRect(Label.frame, book.frame){
ShowAlertWin()
}
}
override func viewDidLoad() {
super.viewDidLoad()
ukFlag.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.londonPuzzle(_:))))
movie.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.misleadOne(_:))))
piano.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.bestival(_:))))
book.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.rosieProject(_:))))
dance.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.misleadTwo(_:))))
paint.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.misleadThree(_:))))
row.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.misleadFour(_:))))
envelope.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.voucher(_:))))
dragon.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.welsh(_:))))
instagram.addGestureRecognizer(UIPanGestureRecognizer(target: self, action: #selector(self.hulk(_:))))
}
}
You need to change your code like this, present the second alertController on completion of dismiss. Also change your if condition with my one.
if presentedViewController == nil {
self.presentViewController(alertController, animated: true, completion: nil)
} else{
self.dismissViewControllerAnimated(false) { () -> Void in
self.presentViewController(alertController, animated: true, completion: nil)
}
}
Hope this will help you.