UITextFieldDelegate works on iOS 8 but not iOS 7 - ios7

Question

I have a UIViewController that has a UITextField in it, and conforms to the UITextFieldDelegate protocol. When I first built the app iOS 7 was the latest iOS and when I selected the text field, the keypad would appear, as expected.
Along comes iOS 8 and Xcode 6. Nothing changed in the code since I first wrote it, but now, curiously, when I select the text field on an iOS 8 device the keypad appears, but on an iOS 7 device it does not.
Why would this be? Any ideas?
Here is my code:
#import "BBFeatVC.h"
#interface BBFeatVC ()
#end
#implementation BBFeatVC
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.featTextField.delegate = self;
// Set label
self.featLabel.numberOfLines = 0;
// enhance keypad
UIToolbar* numberToolbar = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, 320, 50)];
numberToolbar.barStyle = UIBarStyleBlackTranslucent;
numberToolbar.items = [NSArray arrayWithObjects:
[[UIBarButtonItem alloc]initWithTitle:#"Cancel" style:UIBarButtonItemStyleBordered target:self action:#selector(cancelNumberPad)],
[[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil],
[[UIBarButtonItem alloc]initWithTitle:#"Apply" style:UIBarButtonItemStyleDone target:self action:#selector(doneWithNumberPad)],
nil];
[numberToolbar sizeToFit];
self.featTextField.inputAccessoryView = numberToolbar;
}
-(void)cancelNumberPad{
[self.featTextField resignFirstResponder];
}
-(void)doneWithNumberPad{
NSString *numberFromTheKeyboard = self.featTextField.text;
NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
[f setNumberStyle:NSNumberFormatterDecimalStyle];
NSNumber *num = [f numberFromString:numberFromTheKeyboard];
NSInteger newStat = [num integerValue];
[[NSUserDefaults standardUserDefaults] setInteger:newStat forKey:self.featStat];
[self.featTextField resignFirstResponder];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

A red herring if there ever was one. As it turns out this was a case of the iOS Simulator detecting the hardware keyboard and therefore not raising the simulated iPhone keypad. The reason I thought the delegate was working on iOS 8 and not iOS 7 is because my device runs iOS 8 and so I would test on the device when I tested that version of iOS, and I used the simulator when I needed to test iOS 7. Once I tested iOS 8 on the simulator I discovered my flawed assumption and it dawned on me the difference was not between iOS versions but between device and simulator. I corrected the problem by going into the Simulator, and then in the Hardware Menu, then Keyboard, then uncheck the "Connect Hardware Keyboard" option.
This frustrated me to no end. I hope someone benefits from my posting!