message: Update CameraActivity.java
  reformat and add comment
diff: @@ -333,8 +333,11 @@ public abstract class CameraActivity extends Activity
  continue;
  }
  - useCamera2API = facing == CameraCharacteristics.LENS_FACING_EXTERNAL ||
  - isHardwareLevelSupported(characteristics,
  + // Fallback to camera1 API for internal cameras that don't have full support.
  + // This should help with legacy situations where using the camera2 API causes
  + // distorted or otherwise broken previews.
  + useCamera2API = facing == CameraCharacteristics.LENS_FACING_EXTERNAL
  + || isHardwareLevelSupported(characteristics,
  CameraCharacteristics.INFO_SUPPORTED_HARDWARE_LEVEL_FULL);
  LOGGER.i("Camera API lv2?: %s", useCamera2API);
  return cameraId;
  