我需要打开手电筒当相机是开放的。

class FlashLight(private val context: Context) {
    private val cameraManager by lazy { context.getSystemService(Context.CAMERA_SERVICE) as CameraManager }
    private val backCameraId by lazy { cameraManager.cameraIdList[0] }
    
    fun turnOnFlashLight() = changeFlashStatus(shouldBeTurnedOn = true)
    fun turnOffFlashLight() = changeFlashStatus(shouldBeTurnedOn = false)
    private fun changeFlashStatus(shouldBeTurnedOn: Boolean) {
        try {
            cameraManager.setTorchMode(backCameraId, shouldBeTurnedOn)
        } catch (e: Exception){
            L.e(e)
        }
    }
}

我的代码在相机关闭时工作，但当我在应用程序内运行相机并希望打开手电筒时，我得到错误：
android.hardware.camera2.CameraAccessException:CAMERA_IN_USE（4）：setTorchMode：2325：相机“0”的手电筒不可用