Different ways one can dismiss a keyboard by tapping the background

dismissKeyboard.h

@interface someController : UIViewController

@property (nonatomic, weak) UITextField *someTextField;

-(void)dismissKeyboard;

@end

dismissKeyboard.m

import "dismissKeyboard.h"

@implementation dismissKeyboard

/**
 * Option 1 - set a gesture recognizer to the view you are currently on to call hideKeyboard
 */
-(void)viewDidLoad {
    [super viewDidLoad];
    UITapGestureRecognizer *gestureRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(hideKeyboard)];
    [self.view addGestureRecognizer:gestureRecognizer];
}

-(void)hideKeyboard {
    [self.someTextField resignFirstResponder];
}


/**
 * Option 2 - Implement UIGestureRecognizer for touchesBegan (registering this method 
 *            via viewDidLoad like above is not needed)
 *
 * Note, a UIViewController where you do 
 * not need separate handlers is a good place for this..
 */

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [self.someTextField resignFirstResponder];
    [super touchesBegan:touches withEvent:event];
}

@end