Turn flashlight on/off In QRcodeScanner React native

问题

im using react-native-qrcode-scanner and what i want to do is : when user press on a flashlight icon flashLight go on i done this :

<QRCodeScanner
        showMarker
        onRead={this.onSuccess.bind(this)}
        cameraStyle={{ height: SCREEN_HEIGHT }}
        cameraProps={{ flashMode: this.state.flashLight ? RNCamera.Constants.FlashMode.on : RNCamera.Constants.FlashMode.off, captureAudio: false }}

camera prop works but when i change the state.flashLight (true or false) the flashLight not change

any Idea how change camera prop with state ??

回答1:

Try to replace:

RNCamera.Constants.FlashMode.on

with:

RNCamera.Constants.FlashMode.torch

Does the flashlight turn on now?

来源：https://stackoverflow.com/questions/55918898/turn-flashlight-on-off-in-qrcodescanner-react-native