How to make return key on iPhone make keyboard disappear?

Question

I have two UITextFields (e.g. username and password) but I cannot get rid of the keyboard when pressing the return key on the keyboard. How can I do this?

Answer 1

First you need to conform to the UITextFieldDelegate Protocol in your View/ViewController's header file like this:

@interface YourViewController : UIViewController <UITextFieldDelegate>

Then in your .m file you need to implement the following UITextFieldDelegate protocol method:

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

    return YES;
}

[textField resignFirstResponder]; makes sure the keyboard is dismissed.

Make sure you're setting your view/viewcontroller to be the UITextField's delegate after you init the textfield in the .m:

yourTextField = [[UITextField alloc] initWithFrame:yourFrame];
//....
//....
//Setting the textField's properties
//....    
//The next line is important!!
yourTextField.delegate = self; //self references the viewcontroller or view your textField is on

Answer 2

Add this instead of the pre-defined class

class ViewController: UIViewController, UITextFieldDelegate {

To remove keyboard when clicked outside the keyboard

override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        self.view.endEditing(true)
    }

and to remove keyboard when pressed enter

add this line in viewDidLoad()

inputField is the name of the textField used.

self.inputField.delegate = self

and add this function

func textFieldShouldReturn(textField: UITextField) -> Bool {        
        textField.resignFirstResponder()        
        return true        
    }