iOS: How to detect the escape/control keys on a hardware bluetooth keyboard?

Question

I\'m trying to figure out how to detect that the Escape (and other key combinations like Ctrl and alt) have been pressed on a bluetooth keyboard attached to an iOS device.

Answer 1

You can do this now in iOS 7. For example, to implement the escape key, override UITextView and place the following methods in your class:

- (NSArray *) keyCommands {
    UIKeyCommand *esc = [UIKeyCommand keyCommandWithInput: UIKeyInputEscape modifierFlags: 0 action: @selector(esc:)];
    return [[NSArray alloc] initWithObjects: esc, nil];
}

- (void) esc: (UIKeyCommand *) keyCommand {
    // Your custom code goes here.
}

You don't need to check to be sure you are on iOS 7, since earlier versions of the OS won't call the keyCommands method.