iOS Swift Interrupt Keyboard Events - ios

Question

I have problem to intercept keyboard events. I have connected my iOS with SteelSeries Free (gamepad controller) which when connected to iOS will be detected as a Bluetooth Keyboard. This is tested when I open Notes, any button presses in the gamepad will write a letter.
I need to intercept this button presses and run my own functions but unfortunately I am unable to do so.
I've been trying to use GCController but apparently it is not detected as Game Controller object. When I print the count, it shows as 0. My code below.
let gameControllers = GCController.controllers() as! [GCController]
println("configureConnectedGameControllers count: \(gameControllers.count)")
So I assumed it is because the gamepad is detected as bluetooth keyboard that is why its not detected as game controller. And so I attempted to use UIKeyCommand instead. Below is my code:
override func viewDidLoad() {
super.viewDidLoad()
var keys = [UIKeyCommand]()
for digit in "abcdefghijklmnopqrstuvwxyz"
{
keys.append(UIKeyCommand(input: String(digit), modifierFlags: .Command, action: Selector("keyPressed:")))
keys.append(UIKeyCommand(input: String(digit), modifierFlags: .Control, action: Selector("keyPressed:")))
keys.append(UIKeyCommand(input: String(digit), modifierFlags: nil, action: "pressKey"))
}
}
override func canBecomeFirstResponder() -> Bool {
return true
}
func keyPressed(command: UIKeyCommand) {
println("another key is pressed") //never gets called
}
func pressKey() {
println("a key is pressed")
}
But even with the above implementation, nothing is printed in the console when i press a button at the gamepad.
This confuses me. So please help me if you know any answer to this. Thanks in advance!

Answer 1

I finally managed to get it working. Below is the code if anyone ever needs it.
var keys = [UIKeyCommand]()
override func viewDidLoad() {
super.viewDidLoad()
//configureGameControllers()
for digit in "abcdefghijklmnopqrstuvwxyz"
{
keys.append(UIKeyCommand(input: String(digit), modifierFlags: nil, action: Selector("keyPressed:")))
}
}
override func canBecomeFirstResponder() -> Bool {
return true
}
override var keyCommands: [AnyObject]? {
get {
return keys
}
}
func keyPressed(command: UIKeyCommand) {
println("user pressed \(command.input)")
}