diff --git a/app/src/main/java/com/example/citrusclient/views/MyAdapter.java b/app/src/main/java/com/example/citrusclient/views/MyAdapter.java
new file mode 100644
index 0000000..26dee74
--- /dev/null
+++ b/app/src/main/java/com/example/citrusclient/views/MyAdapter.java
@@ -0,0 +1,166 @@
+//package com.example.citrusclient.views;
+//
+//import android.view.LayoutInflater;
+//import android.view.View;
+//import android.view.ViewGroup;
+//import android.widget.TextView;
+//
+//import androidx.recyclerview.widget.RecyclerView;
+//
+//import com.example.citrusclient.R;
+//import com.example.citrusclient.models.Book;
+//
+//import java.util.ArrayList;
+//import java.util.List;
+//
+//public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
+//    private List<Book> originalList; // 元のデータリスト
+//    private List<Book> filteredList;
+//
+//    public MyAdapter(List<Book> originalList) {
+//        this.originalList = originalList;
+//        this.filteredList = new ArrayList<>(originalList);
+//    }
+//
+//    @Override
+//    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+//        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.a_public_book, parent, false);
+//        return new ViewHolder(view);
+//    }
+//
+//    @Override
+//    public void onBindViewHolder(ViewHolder holder, int position) {
+//        Book currentBook = filteredList.get(position);
+//        holder.bind(currentBook);
+//    }
+//
+//    @Override
+//    public int getItemCount() {
+//        return filteredList.size();
+//    }
+//
+//    public void filter(String query) {
+//        filteredList.clear();
+//        if (query.isEmpty()) {
+//            filteredList.addAll(originalList);
+//        } else {
+//            String[] queryWords = query.toLowerCase().trim().split("\\s+");
+//            for (Book item : originalList) {
+//                boolean matchesAll = true;
+//                for (String word : queryWords) {
+//                    if (!item.getAccountId().toLowerCase().contains(word)) {
+//                        matchesAll = false;
+//                        break;
+//                    }
+//                }
+//                if (matchesAll) {
+//                    filteredList.add(item);
+//                }
+//            }
+//        }
+//        notifyDataSetChanged();
+//    }
+//
+//    public void setBooks(ArrayList publicList) {
+//    }
+//
+//    static class ViewHolder extends RecyclerView.ViewHolder {
+//        TextView titleTextView;
+//        TextView authorTextView;
+//
+//        ViewHolder(View itemView) {
+//            super(itemView);
+//            titleTextView = itemView.findViewById(R.id.public_button);
+//            authorTextView = itemView.findViewById(R.id.public_id);
+//        }
+//
+//        void bind(Book book) {
+//            titleTextView.setText(book.getTitle());
+//            authorTextView.setText(book.getAccountId());
+//        }
+//    }
+//}
+
+package com.example.citrusclient.views;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import com.example.citrusclient.R;
+import com.example.citrusclient.models.Book;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
+    private List<Book> originalList; // 元のデータリスト
+    private List<Book> filteredList; // フィルタリングされたリスト
+
+    public MyAdapter(List<Book> originalList) {
+        this.originalList = originalList;
+        this.filteredList = new ArrayList<>(originalList);
+    }
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.a_public_book, parent, false);
+        return new ViewHolder(view);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
+        Book currentBook = filteredList.get(position);
+        holder.bind(currentBook);
+    }
+
+    @Override
+    public int getItemCount() {
+        return filteredList.size();
+    }
+
+    // 新しいデータを設定するメソッド
+    public void setBooks(List<Book> books) {
+        originalList.clear();
+        originalList.addAll(books);
+        filter(""); // 空のクエリで全てのアイテムを表示
+    }
+
+    // フィルタリングメソッド
+    public void filter(String query) {
+        filteredList.clear();
+        if (query.isEmpty()) {
+            filteredList.addAll(originalList);
+        } else {
+            String lowerCaseQuery = query.toLowerCase().trim();
+            for (Book item : originalList) {
+                if (item.getAccountId().toLowerCase().contains(lowerCaseQuery) ||
+                        item.getTitle().toLowerCase().contains(lowerCaseQuery)) {
+                    filteredList.add(item);
+                }
+            }
+        }
+        notifyDataSetChanged();
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView titleTextView;
+        TextView authorTextView;
+
+        ViewHolder(View itemView) {
+            super(itemView);
+            titleTextView = itemView.findViewById(R.id.public_button);
+            authorTextView = itemView.findViewById(R.id.public_id);
+        }
+
+        void bind(Book book) {
+            titleTextView.setText(book.getTitle());
+            authorTextView.setText(book.getAccountId());
+        }
+    }
+}