easyAR切换摄像头

        if (CDB.CameraDeviceType == CameraDeviceBaseBehaviour.DeviceType.Back) {
            CDB.Close();
            Sample.Debug.Log("转前");
            CDB.CameraDeviceType = CameraDeviceBaseBehaviour.DeviceType.Front;
            //CDB.CameraIndex = 1;
            CDB.OpenAndStart();
        } else {
            CDB.Close();
            CDB.CameraDeviceType = CameraDeviceBaseBehaviour.DeviceType.Back;
            //CDB.CameraIndex = 2;
            CDB.OpenAndStart();
            Sample.Debug.Log("转后");
        }

cdb是CameraDeviceBaseBehaviour的实例

sample.debug是因为我加了一层的简单调试器。