如何正确查找物理摄像头ID，Android Studio

import android.content.Context;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraManager;
import android.util.Log;

public class CameraIDFinder {
    private static final String TAG = "CameraIDFinder";

    public static void findCameraIDs(Context context) {
        CameraManager cameraManager = (CameraManager) context.getSystemService(Context.CAMERA_SERVICE);
        if (cameraManager != null) {
            try {
                String[] cameraIdList = cameraManager.getCameraIdList();
                for (String cameraId : cameraIdList) {
                    CameraCharacteristics characteristics = cameraManager.getCameraCharacteristics(cameraId);
                    int cameraFacing = characteristics.get(CameraCharacteristics.LENS_FACING);
                    if (cameraFacing == CameraCharacteristics.LENS_FACING_BACK) {
                        Log.d(TAG, "Back camera ID: " + cameraId);
                    } else if (cameraFacing == CameraCharacteristics.LENS_FACING_FRONT) {
                        Log.d(TAG, "Front camera ID: " + cameraId);
                    }
                }
            } catch (CameraAccessException e) {
                Log.e(TAG, "Cannot access camera manager", e);
            }
        } else {
            Log.e(TAG, "Camera manager is null");
        }
    }
}