diff --git a/app/src/main/java/org/ntlab/amaryllis/client/DialogFragment.java b/app/src/main/java/org/ntlab/amaryllis/client/DialogFragment.java
index f71d1e7..edd105c 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/DialogFragment.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/DialogFragment.java
@@ -1,13 +1,7 @@
 package org.ntlab.amaryllis.client;
 
-import android.app.Activity;
-import android.app.Dialog;
-import android.content.DialogInterface;
 import android.os.Bundle;
-
-import androidx.appcompat.app.AlertDialog;
 import androidx.fragment.app.Fragment;
-
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -16,37 +10,33 @@
  * A simple {@link Fragment} subclass.
  * Use the {@link DialogFragment#newInstance} factory method to
  * create an instance of this fragment.
+ *
  */
 public class DialogFragment extends Fragment {
 
     // TODO: Rename parameter arguments, choose names that match
     // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
-    private static final String TITLE = "title";
-    private static final String MESSAGE = "message";
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
 
     // TODO: Rename and change types of parameters
-    private String mTitle;
-    private String mMessage;
-
-    //OKボタンが押されたことを通知するリスナー
-    private OnOkButtonClickedListener mListener;
-
-
+    private String mParam1;
+    private String mParam2;
 
     /**
      * Use this factory method to create a new instance of
      * this fragment using the provided parameters.
      *
-     * @param title Parameter 1.
-     * @param message Parameter 2.
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
      * @return A new instance of fragment DialogFragment.
      */
     // TODO: Rename and change types and number of parameters
-    public static DialogFragment newInstance(String title, String message) {
+    public static DialogFragment newInstance(String param1, String param2) {
         DialogFragment fragment = new DialogFragment();
         Bundle args = new Bundle();
-        args.putString(TITLE, title);
-        args.putString(MESSAGE, message);
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
         fragment.setArguments(args);
         return fragment;
     }
@@ -56,45 +46,18 @@
     }
 
     @Override
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
+    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         if (getArguments() != null) {
-            mTitle = getArguments().getString(TITLE);
-            mMessage = getArguments().getString(MESSAGE);
-        }
-        //ダイアログの作成
-        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
-        builder.setTitle(mTitle)
-                .setMessage(mMessage)
-                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
-                    public void onClick(DialogInterface dialog, int id) {
-                        mListener.onOkButtonClicked();
-                    }
-                });
-        return builder.create();
-    }
-
-    @Override
-    public void onAttach(Activity activity) {
-        //リスナーのセット
-        super.onAttach(activity);
-        try {
-            mListener = (OnOkButtonClickedListener) activity;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(activity.toString()
-                    + " must implement OnOkButtonListener");
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
         }
     }
 
     @Override
-    public void onDetach() {
-        //リスナーの削除
-        super.onDetach();
-        mListener = null;
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_dialog, container, false);
     }
-
-    public interface OnOkButtonClickedListener {
-        public void onOkButtonClicked();
-    }
-
 }
\ No newline at end of file