ios - UITableView and new methods for tvOS -

i creating test tvos app. have image (outside tableview) , when "focused" not selected, image change... know apple has added couple methods focus. tell me methods use change image when in "focus"? , how use it? use method:

   - (bool)tableview:(uitableview *)tableview canfocusrowatindexpath:(nsindexpath *)indexpath 

or use:

  - (void)tableview:(uitableview *)tableview didupdatefocusincontext:(uitableviewfocusupdatecontext *)context withanimationcoordinator:(uifocusanimationcoordinator *)coordinator 

please let me know! thank you!

if want change image when uitableviewcell item focus, should use second method.

 - (void)tableview:(uitableview *)tableview didupdatefocusincontext:(uitableviewfocusupdatecontext *)context withanimationcoordinator:(uifocusanimationcoordinator *)coordinator {    //you can focused indexpath below    nsindexpath *nextindexpath = [context nextfocusedindexpath];    // image data source, assume have images array    uiimage *image = [_imagesarray objectatindex:nextindexpath.row];    // set image image view, assuming have property imageview    _imageview.image = image; }