Easy way to dismiss keyboard?

You can force the currently-editing view to resign its first responder status with [view endEditing:YES]. This hides the keyboard.

Unlike -[UIResponder resignFirstResponder], -[UIView endEditing:] will search through subviews to find the current first responder. So you can send it to your top-level view (e.g. self.view in a UIViewController) and it will do the right thing.

(This answer previously included a couple of other solutions, which also worked but were more complicated than is necessary. I've removed them to avoid confusion.)

This is a solution to make the keyboard go away when hit return in any textfield, by adding code in one place (so don't have to add a handler for each textfield):

consider this scenario:

i have a viewcontroller with two textfields (username and password). and the viewcontroller implements UITextFieldDelegate protocol

i do this in viewDidLoad

- (void)viewDidLoad 
{
    [super viewDidLoad];

    username.delegate = self;
    password.delegate = self;
}

and the viewcontroller implements the optional method as

- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
    [textField resignFirstResponder];
    return YES;
}

and irrespective of the textfield you are in, as soon as i hit return in the keyboard, it gets dismissed!

In your case, the same would work as long as you set all the textfield's delegate to self and implement textFieldShouldReturn

A better approach is to have something "steal" first responder status.

Since UIApplication is a subclass of UIResponder, you could try:

[[UIApplication sharedApplication] becomeFirstResponder]
[[UIApplication sharedApplication] resignFirstResponder]

Failing that, create a new UITextField with a zero sized frame, add it to a view somewhere and do something similar (become followed by resign).

A lot of overly-complicated answers here, perhaps because this is not easy to find in the iOS documentation. JosephH had it right above:

[[view window] endEditing:YES];

Even Simpler than Meagar's answer

overwrite touchesBegan:withEvent:

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    [textField resignFirstResponder];`
}

This will dismiss the keyboardwhen you touch anywhere in the background.

the easist way is to call the method

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{
    if(![txtfld resignFirstResponder])
    {
        [txtfld resignFirstResponder];
    }
    else
    {

    }
    [super touchesBegan:touches withEvent:event];
}

Update

I found another simple way

simply declare a property :-

@property( strong , nonatomic) UITextfield *currentTextfield;

and a Tap Gesture Gecognizer:-

@property (strong , nonatomic) UITapGestureRecognizer *resignTextField;

In ViewDidLoad

_currentTextfield=[[UITextField alloc]init];
_resignTextField=[[UITapGestureRecognizer alloc]initWithTarget:@selector(tapMethod:)];

[self.view addGestureRecognizer:_resignTextField];

Implement the textfield delegate method didBeginEditing

 -(void)textFieldDidBeginEditing:(UITextField *)textField{


      _currentTextfield=textField;

    }

Implement Your Tap Gesture Method (_resignTextField)

 -(void)tapMethod:(UITapGestureRecognizer *)Gesture{

     [_currentTextfield resignFirstResponder];

 }