CameraX Flash Issue

Question

This is a weird issue . I don't know whether it is a bug or something in the library .So the issue is with flash of the camerax .

I assign a global variable flashMode

    private var flashMode: Int = ImageCapture.FLASH_MODE_OFF

then set it to the ImageCaptureBuilder

        imageCapture = ImageCapture.Builder()
            .setCaptureMode(ImageCapture.CAPTURE_MODE_MINIMIZE_LATENCY)
            .setTargetAspectRatio(screenAspectRatio)
            .setFlashMode(flashMode)
            .setTargetRotation(rotation)
            .build()

And before taking the picture I turn the flash On

if (camera?.cameraInfo?.hasFlashUnit() == true) {
   flashMode = ImageCapture.FLASH_MODE_ON
}

But this does Not turn the camera flash On , but it sets the flashMode value to 1 ,i.e.,ImageCapture.FLASH_MODE_ON (I checked via logging ).Before capturing the image , i again logged and checked the value of flashMode and it was 1 , but then too the flash was not turning on.But if I set the global variable as

private var flashMode: Int = ImageCapture.FLASH_MODE_ON

Then it works and the flash get's turned on . I have tried this above method of setting the Flash On post setting it to FlashModeOff in my previous projects and it had worked well . But this time I am not able to understand what is wrong . Thanks in advance

Answer 1

Try changing the flash mode with

imageCapture.flashMode = ImageCapture.FLASH_MODE_ON

instead of

flashMode = ImageCapture.FLASH_MODE_ON