diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingCardFragment.java b/app/src/main/java/org/ntlab/irisclient/DrawingCardFragment.java
index be9d689..f9fcd19 100644
--- a/app/src/main/java/org/ntlab/irisclient/DrawingCardFragment.java
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingCardFragment.java
@@ -1,23 +1,15 @@
 package org.ntlab.irisclient;
-import android.content.Context;
 import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+import android.media.Image;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageButton;
-import android.widget.ImageView;
-import android.widget.TextView;
-import android.widget.Toast;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.core.content.ContextCompat;
-import androidx.core.content.res.ResourcesCompat;
 import androidx.fragment.app.Fragment;
-import androidx.fragment.app.FragmentManager;
-import androidx.fragment.app.FragmentTransaction;
 
 public class DrawingCardFragment extends Fragment {
 
@@ -34,74 +26,54 @@
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         super.onCreateView(inflater, container, savedInstanceState);
-        Resources resources = getResources();
 
+        Resources resources = getResources();
         View view = inflater.inflate(R.layout.fragment_card_drawing,  container, false);
 
-        ImageButton imageButton00 = (ImageButton) view.findViewById(R.id.imageButton00);
-        imageButton00.setBackground(resources.getDrawable(R.drawable.test02));
+        // ImageButton16個の型を使いまわしやすいように配列で使用
+        ImageButton[] imageButtons = {
+                (ImageButton) view.findViewById(R.id.imageButton00),
+                (ImageButton) view.findViewById(R.id.imageButton01),
+                (ImageButton) view.findViewById(R.id.imageButton02),
+                (ImageButton) view.findViewById(R.id.imageButton03),
+                (ImageButton) view.findViewById(R.id.imageButton10),
+                (ImageButton) view.findViewById(R.id.imageButton11),
+                (ImageButton) view.findViewById(R.id.imageButton12),
+                (ImageButton) view.findViewById(R.id.imageButton13),
+                (ImageButton) view.findViewById(R.id.imageButton20),
+                (ImageButton) view.findViewById(R.id.imageButton21),
+                (ImageButton) view.findViewById(R.id.imageButton22),
+                (ImageButton) view.findViewById(R.id.imageButton23),
+                (ImageButton) view.findViewById(R.id.imageButton30),
+                (ImageButton) view.findViewById(R.id.imageButton31),
+                (ImageButton) view.findViewById(R.id.imageButton32),
+                (ImageButton) view.findViewById(R.id.imageButton33)
+        };
 
-        ImageButton imageButton01 = (ImageButton) view.findViewById(R.id.imageButton01);
-        imageButton01.setBackground(resources.getDrawable(R.drawable.test02));
+        // 16枚表示させるImage画像の配列
+        Drawable[] images = {
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02),
+                resources.getDrawable(R.drawable.test02)
+        };
 
-        ImageButton imageButton02 = (ImageButton) view.findViewById(R.id.imageButton02);
-        imageButton02.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton03 = (ImageButton) view.findViewById(R.id.imageButton03);
-        imageButton03.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton10 = (ImageButton) view.findViewById(R.id.imageButton10);
-        imageButton10.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton11 = (ImageButton) view.findViewById(R.id.imageButton11);
-        imageButton11.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton12 = (ImageButton) view.findViewById(R.id.imageButton12);
-        imageButton12.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton13 = (ImageButton) view.findViewById(R.id.imageButton13);
-        imageButton13.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton20 = (ImageButton) view.findViewById(R.id.imageButton20);
-        imageButton20.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton21 = (ImageButton) view.findViewById(R.id.imageButton21);
-        imageButton21.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton22 = (ImageButton) view.findViewById(R.id.imageButton22);
-        imageButton22.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton23 = (ImageButton) view.findViewById(R.id.imageButton23);
-        imageButton23.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton30 = (ImageButton) view.findViewById(R.id.imageButton30);
-        imageButton30.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton31 = (ImageButton) view.findViewById(R.id.imageButton31);
-        imageButton31.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton32 = (ImageButton) view.findViewById(R.id.imageButton32);
-        imageButton32.setBackground(resources.getDrawable(R.drawable.test02));
-
-        ImageButton imageButton33 = (ImageButton) view.findViewById(R.id.imageButton33);
-        imageButton33.setBackground(resources.getDrawable(R.drawable.test02));
-
-        imageButton00.setOnClickListener(this::onClick);
-        imageButton01.setOnClickListener(this::onClick);
-        imageButton02.setOnClickListener(this::onClick);
-        imageButton03.setOnClickListener(this::onClick);
-        imageButton10.setOnClickListener(this::onClick);
-        imageButton11.setOnClickListener(this::onClick);
-        imageButton12.setOnClickListener(this::onClick);
-        imageButton13.setOnClickListener(this::onClick);
-        imageButton20.setOnClickListener(this::onClick);
-        imageButton21.setOnClickListener(this::onClick);
-        imageButton22.setOnClickListener(this::onClick);
-        imageButton23.setOnClickListener(this::onClick);
-        imageButton30.setOnClickListener(this::onClick);
-        imageButton31.setOnClickListener(this::onClick);
-        imageButton32.setOnClickListener(this::onClick);
-        imageButton33.setOnClickListener(this::onClick);
+        for(int i=0; i< imageButtons.length; i++) {
+            imageButtons[i].setOnClickListener(this::onClick);
+            imageButtons[i].setBackground(images[i]);
+        };
 
         return view;
     }