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	表示アニメーションを500ms以上かかった場合のみに
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				|  | @ -214,16 +214,22 @@ public class LibraryPageFragment extends Fragment { | |||
|      * RecyclerViewのアイテムとUIを更新する | ||||
|      */ | ||||
|     private void updateItem(String pageId) { | ||||
|         long startTime = System.currentTimeMillis(); | ||||
|         lacertaLibrary.getLibraryPage(pageId, 10).thenAccept(libraryItemPage -> { | ||||
|             long endTime = System.currentTimeMillis(); | ||||
|             this.libraryItemPage = libraryItemPage; | ||||
|             logger.debug("LibraryTopFragment", "Item selected! libraryItemPage.getListItems().size(): " + libraryItemPage.getListItems().size()); | ||||
|             if (endTime - startTime > 500) { // 500ms以上かかった場合は表示アニメーションをする | ||||
|                 getActivity().runOnUiThread(() -> { | ||||
|                 listItemAdapter.notifyItemRangeRemoved(0, libraryItemPage.getListItems().size() - 1); | ||||
|                     listItemAdapter.setLibraryItemPage(libraryItemPage); | ||||
|                     listItemAdapter.notifyItemRangeInserted(0, this.libraryItemPage.getListItems().size()); | ||||
|                 }); | ||||
|             } else { | ||||
|                 listItemAdapter.setLibraryItemPage(libraryItemPage); | ||||
|                 getActivity().runOnUiThread(() -> { | ||||
|                 listItemAdapter.notifyItemRangeInserted(0, libraryItemPage.getListItems().size() - 1); | ||||
|                     listItemAdapter.notifyDataSetChanged(); | ||||
|                 }); | ||||
|             } | ||||
|         }); | ||||
|     } | ||||
| 
 | ||||
|  |  | |||
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