Detect Shift + Enter on iOS keyboard

Question

Is it possible to detect a Shift + Enter key combination on iOS in a UITextView?

What do you want to do differently? Use ... shouldChangeTextInRange... delegate method and see if there is any difference between Enter and Shift+Enter. — rmaddy
– rmaddy, Commented Jan 14, 2015 at 0:27
But how would do detect if the shift key is pressed or active when return is pressed? — Berry Blue
– Berry Blue, Commented Jan 14, 2015 at 0:29
As I said, implement that UITextViewDelegate delegate method and look at the value to see if there is any difference. Probably not. And again, what is your goal? There may be another way. — rmaddy
– rmaddy, Commented Jan 14, 2015 at 0:31
There isn't. :) I want to do separate actions if it's a return or shift + return. — Berry Blue
– Berry Blue, Commented Jan 14, 2015 at 0:32
I assumed you wanted to do something different. What is it? No one can offer help if you keep it a secret. :) — rmaddy
– rmaddy, Commented Jan 14, 2015 at 0:34

Yom T. · Accepted Answer · 2019-02-19 09:05:44Z

7

Using Swift you can intercept the combination Shift + Enter in a UIResponder subclass using something like this:

override var keyCommands: [UIKeyCommand]? {
    get {
        return [UIKeyCommand(input: "\r", modifierFlags: .shift , action: #selector(handleShiftEnter(command:)))]
    }
}

func handleShiftEnter(command: UIKeyCommand) {
    print("Combo pressed! Default action intercepted!")
}

edited Feb 19, 2019 at 9:05

Yom T.

9,1982 gold badges35 silver badges52 bronze badges

answered May 30, 2017 at 19:26

clearscreen

2,04719 silver badges20 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Yoshiharu Yamada Over a year ago

Your answer helps me a lot! Thank you! I have implemented the custom textview in gist: gist.github.com/yosshi4486/ff37ffee79886fd2beabde375f65ba9a.

paulvs Over a year ago

Did this work with the iOS keyboard? In my tests, it only works with a bluetooth-connected physical keyboard.

paulvs Over a year ago

FWIW, I'm trying to allow for soft newlines by tapping return while holding down the Shift key on the iOS virtual keyboard (similar to this).

sash · Accepted Answer · 2022-11-17 15:05:28Z

Here is a subclass of UITextView that detects enter key and shift enter key combination on an external physical keyboard.

protocol TextViewWithKeyDetectionDelegate: AnyObject {
    func enterKeyWasPressed(textView: UITextView)
    func shiftEnterKeyPressed(textView: UITextView)
}

class TextViewWithKeyDetection: UITextView {
    weak var keyDelegate: TextViewWithKeyDetectionDelegate?
    
    override var keyCommands: [UIKeyCommand]? {
        [UIKeyCommand(input: "\r", modifierFlags: .shift, action: #selector(shiftEnterKeyPressed)),
         UIKeyCommand(input: "\r", modifierFlags: [], action: #selector(enterKeyPressed))]
    }
    
    @objc func shiftEnterKeyPressed(sender: UIKeyCommand) {
        keyDelegate?.shiftEnterKeyPressed(textView: self)
    }
    
    @objc func enterKeyPressed(sender: UIKeyCommand) {
        keyDelegate?.enterKeyWasPressed(textView: self)
    }
}

Collectives™ on Stack Overflow

Detect Shift + Enter on iOS keyboard

2 Answers 2

3 Comments

Comments

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

3 Comments

Comments

Related