Dismiss keyboard on touch anywhere outside UITextField

Question

I am developing an iPad app that has a large number of UIViewControllers, UITableViews (with cells with accessoryViews of UIText

Answer 1

I normally use the following

First:

Include the following extension in your implementation file, findFirstResponder will help you find the first resonder

@implementation UIView (FindFirstResponder)
- (UIView*)findFirstResponder
{
    if (self.isFirstResponder) {
        return self;     
    }
    for (UIView *subView in self.subviews) {
        UIView *responder = [subView findFirstResponder];
        if (responder)
            return responder;
    }

    return nil;
}
@end

Then in your view controller viewDidLoad add the following

- (void)viewDidLoad
{
    [super viewDidLoad];
    NSNotificationCenter *center = [NSNotificationCenter defaultCenter];
    [center addObserver:self selector:@selector(keyboardDidShow:) 
                   name:UIKeyboardDidShowNotification 
                 object:nil];

    [center addObserver:self selector:@selector(keyboardDidHide:) 
                   name:UIKeyboardWillHideNotification 
                 object:nil];
    // Do any additional setup after loading the view, typically from a nib.
}

The notification functions will be like this

- (void) keyboardDidShow:(NSNotification*)notification
{    
    UIButton *button = [[UIButton alloc] init];

    CGRect rect = self.view.bounds;


    button.frame = rect;
    button.backgroundColor = [UIColor blackColor];
    button.tag = 111;
    UIView *currentResponer = [self.view findFirstResponder];
    [button addTarget:currentResponer action:@selector(resignFirstResponder) forControlEvents:UIControlEventTouchUpInside];

    [self.view insertSubview:button belowSubview:currentResponer];
}

- (void) keyboardDidHide:(NSNotification*)notification
{
    [[self.view viewWithTag:111] removeFromSuperview];
}

When the keyboard shows, i add a UIButton beneath the current first responder, this button action will hide the keyboard,

A limitation here is that the UITextField has to be in self.view however you could adapt this technique for your need with some modifications, hope it helps you