diff --git a/app/src/main/java/com/example/citrusclient/views/MyAdapter.java b/app/src/main/java/com/example/citrusclient/views/MyAdapter.java
index a829609..965f91c 100644
--- a/app/src/main/java/com/example/citrusclient/views/MyAdapter.java
+++ b/app/src/main/java/com/example/citrusclient/views/MyAdapter.java
@@ -105,6 +105,10 @@
                 Animation animation = AnimationUtils.loadAnimation(holder.itemView.getContext(),R.anim.touch);
                 view.startAnimation(animation);
                 holder.LikeTextView.setTag("liked");
+                if(!favoritesMap.containsKey(currentBook.getAccountId())) {
+                    favoritesMap.put(currentBook.getAccountId(), new HashSet<>());
+                }
+                favoritesMap.get(currentBook.getAccountId()).add(currentBook.getBookId());
             }else if(holder.LikeTextView.getTag().equals("liked")){
                 System.out.println(citrus.getAccountId()+"が"+currentBook.getAccountId()+"の"+currentBook.getBookId()+"を解除しました");
                 booksViewModel.unregisterFavoriteCount(currentBook.getAccountId(), currentBook.getBookId());
@@ -112,6 +116,7 @@
                 favoritesViewModel.deletefavorite(currentBook.getAccountId(), currentBook.getBookId(), citrus.getAccountId(), citrus.getToken());
                 holder.LikeTextView.setImageResource(R.drawable.baseline_favorite_border_24);
                 holder.LikeTextView.setTag("unliked");
+                favoritesMap.get(currentBook.getAccountId()).remove(currentBook.getBookId());
             }
         });
     }