manual torch button added for flashlight at the time of scan QR code

[kumarlav0]

• When I tried to implement this CodeScanner I found there is no manual button to turn on/off the torch at the time of Scanning QR code.

• So, On the basis of that I create this branch with manual button on ui to turn on/off torch at the time of Scanning QR code. It is a small feature but it is very useful for users.

• Previously we have only option to turn on torch at the time of initialisation of CodeScannerView. And due to this flashlight gets automatically on for longer time. Which I found very unknowing feature.

• If user will have button to turn ON/OFF torch or flashlight at the time of scanning QR code it will be very helpful for them.

• I hope this could be add on feature for this Code Scanner.

[nathanfallet]

Your change is breaking the way the library currently works. You cannot remove isTorchOn.

You can implement your own button and inject the value into isTorchOn like this:

    @State var torchIsOn: Bool
    @State var isGalleryPresented: Bool

    var body: some View {
        ZStack {
            CodeScannerView(
                codeTypes: [.qr],
                scanMode: .continuous,
                isTorchOn: torchIsOn,
                isGalleryPresented: $isGalleryPresented,
                completion: { _ in }
            )
            Button(action: { torchIsOn.toggle() }) {
                Image(systemName: torchIsOn ? "bolt.fill" : "bolt.slash.fill")
                    .foregroundColor(torchIsOn ? Color.yellow : Color.accentColor)
            }
        }
    }