IBAction func on button not triggering - ios

Question

I have 3 buttons in a VC, all hooked up to IBAction functions. Two of them work fine but the Submit button simply simply won't trigger.
I have made sure User Interaction is enabled. I have also tried adding sender: AnyObject as a parameter and re-hooking up the function to the button but still no luck. I have also cleaned the project. I am very baffled as to what is going on.
Here is how the VC looks:
Hooking the buttons up:
Accessibility of button:
Here is the code for each IBAction func:
#IBAction func captureImage(){
self.saveVideoVar = false
let imageFromSource = UIImagePickerController()
imageFromSource.delegate = self
imageFromSource.allowsEditing = false
//if there is a camera
if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera){
imageFromSource.sourceType = UIImagePickerControllerSourceType.Camera
self.presentViewController(imageFromSource, animated: true){}
}
else{
let title = "Error"
let message = "Could not load camera"
let alert = UIAlertController(title: title, message: message, preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Cancel, handler: nil))
presentViewController(alert, animated: true, completion: nil)
}
}
#IBAction func openImageLibrary(){
self.saveVideoVar = false
let imageFromSource = UIImagePickerController()
imageFromSource.delegate = self
imageFromSource.allowsEditing = false
imageFromSource.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
//presents (loads) the library
self.presentViewController(imageFromSource, animated: true){}
}
//code to submit image and video to amazon S3
#IBAction func submitToS3(){
print("x")
if let img : UIImage = imageView.image! as UIImage{
let path = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("image.png")
let imageData: NSData = UIImagePNGRepresentation(img)!
imageData.writeToFile(path as String, atomically: true)
// once the image is saved we can use the path to create a local fileurl
let url:NSURL = NSURL(fileURLWithPath: path as String)
nwyt.uploadS3(url)
}
}
Screenshot of control clicking the Submit button:
OH MY GOD! I feel stupid. There was a duplicate screen I had forgotten to delete that looked exactly the same but wasn't the one that was being displayed. I'm going to delete this in an hour. Below was the problem:

Answer 1

Check by setting background colors to the buttons so that you can understand whether any view is over the button or not .

Answer 2

I can see that there is an extra ":" in "submitToS3:", meaning that the function submitToS3 should have an argument, which is not your case.
In order to solve this, just remove the submitToS3 link, and then drag and drop from the Submit button to the yellow icon above in the controller, and link it to the "submitToS3" (you should see it there). When looking back at the Received Actions view, you should not see the ":"

Answer 3

Try this:
//code to submit image and video to amazon S3
#IBAction func submitToS3(sender:UIButton){
print("x")
if let img : UIImage = imageView.image! as UIImage{
let path = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("image.png")
let imageData: NSData = UIImagePNGRepresentation(img)!
imageData.writeToFile(path as String, atomically: true)
// once the image is saved we can use the path to create a local fileurl
let url:NSURL = NSURL(fileURLWithPath: path as String)
nwyt.uploadS3(url)
}
}
Seems callback argument was missing. Should work. Finger crossed!!
Please check the enabled property in property inspector!
Check button name!
Create a new button and new method. Try and hook. I had faced this kinda problem. Could be xCode issue if you are using xCode 7.