view.endEditing causing app to freeze on some textFields - swift

Question

Problem solved. See end of post.
Sorry if this is a bit long but I'm hoping I've included as much info to get this solved.
Brief overview of problem: Enter value in a textField using my custom keypad. Tap done button(should trigger view.endEditing) and some textFields will cause the app to freeze, most the time Xcode won't even throw an error but instead just restart the app, but i did catch one once(pic below). It works as expected on some textFields.
So I have a view controller with a bunch of textFields for the user to fill out which then performs calculations.
I have made a custom Keypad which essentially is the decimal pad with a "Done" button. I did this by making an keyboard.xib file and a keyboard.swift file.
Heres a snapshot of the error, I've included a whole bunch of my code below incase I'm using a method that isn't the best.
This is how the keyboard.swift file looks:
import UIKit
// The view controller will adopt this protocol (delegate)
// and thus must contain the keyWasTapped method
protocol KeyboardDelegate: class {
func keyWasTapped(character: String)
func keyDone()
func backspace()
}
class keyboard: UIView {
// This variable will be set as the view controller so that
// the keyboard can send messages to the view controller.
weak var delegate: KeyboardDelegate?
// MARK:- keyboard initialization
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
initializeSubviews()
}
override init(frame: CGRect) {
super.init(frame: frame)
initializeSubviews()
}
func initializeSubviews() {
let xibFileName = "Keyboard" // xib extention not included
let view = NSBundle.mainBundle().loadNibNamed(xibFileName, owner: self, options: nil)[0] as! UIView
self.addSubview(view)
view.frame = self.bounds
}
// MARK:- Button actions from .xib file
#IBAction func keyTapped(sender: UIButton) {
// When a button is tapped, send that information to the
// delegate (ie, the view controller)
self.delegate?.keyWasTapped(sender.titleLabel!.text!) // could alternatively send a tag value
}
#IBAction func backspace(sender: UIButton) {
self.delegate?.backspace()
}
#IBAction func Done(sender: UIButton) {
self.delegate?.keyDone()
}
}
In the viewController I'm pretty sure I've included all the necessary things to access the keyboard seeing as it works for some textFields. Such as:
class myViewController: UITableViewController,UITextFieldDelegate, KeyboardDelegate
Then in viewDidLoad set each textField delegate:
self.textField1.delegate = self
self.textField2.delegate = self
self.textField3.delegate = self
// initialize custom keyboard
let keyboardView = keyboard(frame: CGRect(x: 0, y: 0, width: 0, height: numpad.height))
keyboardView.delegate = self // the view controller will be notified by the keyboard whenever a key is tapped
// replace system keyboard with custom keyboard
textField1.inputView = keyboardView
textField2.inputView = keyboardView
textField3.inputView = keyboardView
Then this function (which seems to me to be the problem):
func keyDone() {
view.endEditing(true)
//activeTextField.resignFirstResponder()
print("please dont freeze")
}
I have checked all the connections, they seem to be fine.
Let me know if I can add any more info to help work it out.
Many Thanks.
Solved!!!
I suppose ill just put it down to beating my head over it rather than taking a break from the screen! Still I'm confused why it wasn't given a more specific error.
The problem was that in some cases one of the functions was dividing by zero (this is undefined... not possible) but a good thing to take from this(thank you Olivier) is the Instruments Tools to help find where abouts the code was losing its mind. This tutorial helped me understand how to use instruments! So once I could see where it was going crazy I set up a bunch of print statements to watch the values as they went into the 'problem' calculation, where I found the denominator to be zero. Bit of rearranging the code around to avoid this and problem solved!

Answer 1

This error message is basically saying that there is a memory issue, try running the code with instruments (Allocations in particular) this might reveal is there is something amiss with your keyboard
Edit 2: for anyone finding this error message in future (actual solution in this case)
Double check any code code running after keyDone() to see if there are any infinite loops or situations that would cause the compiler to assume an infinite amount of memory is required. In this case a line of code was dividing by zero, causing a fatal memory error (unable to allocate the N/A value it generated)