Changing a Boolean when a key is pressed.

Does anyone know how I would be able to change a Boolean when a key is pressed on a keyboard?

15 Replies

@Coach thought I should ping on behalf of @bobtheguy_32392

nouun•15mo ago

Can you give any more information? macOS or iOS? Is this to do with a text box or just a generic keypress? Do you want it to happen outside the application if on macOS? You don’t need to ping coaches 6 minutes after the post was created.

bobtheguy_32392OP•15mo ago

So basicly if i were to give more information, say you were on an ipad with a keyboard attcehd to it, how would i be able to change a Boolean if i were to press one of the keys on the keyboard-? (I hope this gives some more information)

nouun•15mo ago

SwiftUI or UIKit?

bobtheguy_32392OP•15mo ago

SwiftUI

🇦🇺🦅✝🔥 𝕰𝖕𝖎𝖐𝖚𝖘 🔥✝🦅🇦🇺👑©™•15mo ago

nouun•15mo ago

Would this work? https://developer.apple.com/documentation/swiftui/view/keyboardshortcut(_:modifiers:)

Apple Developer Documentation

keyboardShortcut(_:modifiers:) | Apple Developer Documentation

Defines a keyboard shortcut and assigns it to the modified control.

nouun•15mo ago

It’s the “SwiftUI” way to do it.

bobtheguy_32392OP•15mo ago

I think it would work, Thank you!

nouun•15mo ago

The other option would be something like this:

.onAppear() {
    NSEvent.addLocalMonitorForEvents(matching: .keyDown) { event -> NSEvent? in
        if event.keyCode == 53 { // if esc pressed
            // Do something here

            return nil // Do not do "beep" sound
        }
            
        // Return original event if not handled
        return event
    }
}

.onAppear() {
    NSEvent.addLocalMonitorForEvents(matching: .keyDown) { event -> NSEvent? in
        if event.keyCode == 53 { // if esc pressed
            // Do something here

            return nil // Do not do "beep" sound
        }
            
        // Return original event if not handled
        return event
    }
}

bobtheguy_32392OP•15mo ago

Alright, thank you for 2 different options! 😀

nouun•15mo ago

A few more options if needed as well: https://stackoverflow.com/questions/59797650/swiftui-ios-how-to-capture-hardware-key-events/59798172#59798172

Stack Overflow

SwiftUI iOS - how to capture hardware key events

I’m new to iOS development. Following a tutorial I have created a simple calculator using SwiftUI. I have a keyboard attached to my iPad, and I would like to be able to enter values using the keyb...

nouun•15mo ago

One of them should hopefully work for your use case.

bobtheguy_32392OP•15mo ago

Wow, thank you for all the options man! it's really appreciated.

Bro just being utterly flabbergasted at the help you can receive through this server

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Changing a Boolean when a key is pressed.