A more elegant way is to dismiss the keyboard when the user taps somewhere outside of the keyboard’s frame.

First, set your ViewController’s view to the class “UIControl” in the identity inspector in UIBuilder. Control-drag the view into the ViewController’s header file and link it as an action with the event as Touch Up Inside, such as:

ViewController.h

-(IBAction)dismissKeyboardOnTap:(id)sender;

In the main ViewController file, ViewController.m:

-(IBAction)dismissKeyboardOnTap:(id)sender
    {
         [[self view] endEditing:YES];
    }

You can require a double tap or long touch using similar techniques. You may need to set your ViewController to be a UITextViewDelegate and connect the TextView to the ViewController. This method works for both UITextView and UITextField.

Source: Big Nerd Ranch

EDIT: I’d also like to add that if you are using a UIScrollView, the above technique may not work as easily through the Interface Builder. In that case, you could use a UIGestureRecognizer and call the [[self view] endEditing:YES] method within it instead. An example would be:

-(void)ViewDidLoad{
    ....
    UITapGestureRecognizer *tapRec = [[UITapGestureRecognizer alloc] 
        initWithTarget:self action:@selector(tap:)];
    [self.view addGestureRecognizer: tapRec];
    ....
}

-(void)tap:(UITapGestureRecognizer *)tapRec{
    [[self view] endEditing: YES];
}

When the user taps outside of the keyboard and does not tap an entry space, the keyboard will dismiss.