private bool Active;
private AndroidJavaObject camera1;

void FL_Start()
{
    AndroidJavaClass cameraClass = new AndroidJavaClass("android.hardware.Camera");
    WebCamDevice[] devices = WebCamTexture.devices;

    int camID = 0;
    camera1 = cameraClass.CallStatic<AndroidJavaObject>("open", camID);

    if (camera1 != null)
    {
     AndroidJavaObject cameraParameters = camera1.Call<AndroidJavaObject>("getParameters");
     cameraParameters.Call("setFlashMode", "torch");
     camera1.Call("setParameters", cameraParameters);
	camera1.Call("startPreview");
     Active = true;
    }
    else
    {
     Debug.LogError("[CameraParametersAndroid] Camera not available");
    }

}

void OnDestroy()
{
    FL_Stop();
}

void FL_Stop()
{

    if (camera1 != null)
    {
     camera1.Call("stopPreview");
     camera1.Call("release");
     Active = false;
    }
    else
    {
     Debug.LogError("[CameraParametersAndroid] Camera not available");
    }

}