diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 694e8e9..690e18f 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -6,7 +6,7 @@
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <application
         android:name=".app.Cosmos"
@@ -19,8 +19,12 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity
+            android:name=".views.DisplayGroupIDActivity"
+            android:label="IDを表示"
+            ></activity>
+        <activity
             android:name=".views.CreateGroupActivity"
-            android:label="グループ作成"></activity>
+            android:label="グループ作成" />
         <activity
             android:name=".views.JoinGroupByIDActivity"
             android:label="IDでグループに入る" />
@@ -34,7 +38,7 @@
         <activity
             android:name=".views.QRcodeReadingActivity"
             android:screenOrientation="portrait"
-            tools:replace="screenOrientation"></activity>
+            tools:replace="screenOrientation" />
         <activity
             android:name=".views.SigninActivity"
             android:theme="@style/AppTheme.NoActionBar">
@@ -49,7 +53,7 @@
             android:theme="@style/AppTheme.NoActionBar" />
         <activity
             android:name="com.theartofdev.edmodo.cropper.CropImageActivity"
-            android:theme="@style/Base.Theme.AppCompat"/>
+            android:theme="@style/Base.Theme.AppCompat" />
         <activity
             android:name=".views.ForgotPasswordActivity"
             android:theme="@style/AppTheme.NoActionBar" />
@@ -63,14 +67,14 @@
             android:label="@string/title_activity_add_request" />
         <activity
             android:name=".views.DisplayQRActivity"
-            android:label="メンバー追加" />
+            android:label="QRコード表示" />
         <activity
             android:name=".views.AddMemberActivity"
             android:label="メンバー追加" />
         <activity
             android:name=".views.GroupListActivity"
             android:label="@string/title_activity_group_list"
-            android:theme="@style/AppTheme.NoActionBar"></activity>
+            android:theme="@style/AppTheme.NoActionBar" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/com/example/cosmosclient/views/DisplayGroupIDActivity.java b/app/src/main/java/com/example/cosmosclient/views/DisplayGroupIDActivity.java
index ae27d18..f3b1841 100644
--- a/app/src/main/java/com/example/cosmosclient/views/DisplayGroupIDActivity.java
+++ b/app/src/main/java/com/example/cosmosclient/views/DisplayGroupIDActivity.java
@@ -1,33 +1,50 @@
 package com.example.cosmosclient.views;
 
+import android.content.ClipData;
+import android.content.ClipboardManager;
+import android.content.Context;
+import android.os.Build;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
 import android.widget.EditText;
 import android.widget.TextView;
+import android.widget.Toast;
 
 import com.example.cosmosclient.R;
 import com.example.cosmosclient.app.Cosmos;
 import com.example.cosmosclient.entities.Group;
 
 public class DisplayGroupIDActivity extends AppCompatActivity {
-
-
-    //    EditText.set;
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_display_group_id);
 
-        //読み取り専用にする設定
         EditText groupID = (EditText)findViewById(R.id.groupID);
-
+        // ボタンを設定
+        Button copyButton = findViewById(R.id.copy_Button);
+        //読み取り専用にする設定
+        groupID.setEnabled(false);
 //        //現在のグループ情報を格納しているものからgIdを取得
 //        Cosmos app = (Cosmos) getApplication();
 //        Group curentGroup = app.getCurentGroup();
 //        //元となるgIdを取得完了
 //        String gId = curentGroup.getgId();
-        String gId = "vrehngortis";
+        final String gId = "vrehngortis";
         groupID.setText(gId);
 
+        copyButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                ClipboardManager clipboard
+                        = (ClipboardManager) getSystemService(
+                        Context.CLIPBOARD_SERVICE);
+                clipboard.setPrimaryClip(ClipData.newPlainText("", gId));
+            }
+        });
+
     }
+
 }
diff --git a/app/src/main/res/layout/activity_display_group_id.xml b/app/src/main/res/layout/activity_display_group_id.xml
index 43bd3ae..e0bf2c3 100644
--- a/app/src/main/res/layout/activity_display_group_id.xml
+++ b/app/src/main/res/layout/activity_display_group_id.xml
@@ -21,8 +21,8 @@
         android:id="@+id/groupID"
         android:layout_width="207dp"
         android:layout_height="45dp"
-        android:layout_marginStart="56dp"
-        android:layout_marginLeft="56dp"
+        android:layout_marginStart="76dp"
+        android:layout_marginLeft="76dp"
         android:layout_marginTop="8dp"
         android:layout_marginBottom="8dp"
         android:ems="10"
@@ -32,21 +32,18 @@
         app:layout_constraintEnd_toStartOf="@+id/copy_Button"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/groupName"
-        app:layout_constraintVertical_bias="0.378" />
+        app:layout_constraintVertical_bias="0.436" />
 
     <Button
         android:id="@+id/copy_Button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginTop="8dp"
-        android:layout_marginEnd="36dp"
-        android:layout_marginRight="36dp"
-        android:layout_marginBottom="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginRight="8dp"
         android:text="コピー"
-        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.445" />
+        app:layout_constraintStart_toEndOf="@+id/groupID"
+        app:layout_constraintTop_toTopOf="@+id/groupID" />
 
 
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_join_group_by_id.xml b/app/src/main/res/layout/activity_join_group_by_id.xml
index 0ec48a6..1a45ac7 100644
--- a/app/src/main/res/layout/activity_join_group_by_id.xml
+++ b/app/src/main/res/layout/activity_join_group_by_id.xml
@@ -19,10 +19,10 @@
         android:inputType="textEmailAddress"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/button"
-        app:layout_constraintHorizontal_bias="0.785"
+        app:layout_constraintHorizontal_bias="0.765"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/textView7"
-        app:layout_constraintVertical_bias="0.27" />
+        app:layout_constraintVertical_bias="0.441" />
 
     <TextView
         android:id="@+id/textView7"
@@ -39,8 +39,8 @@
         android:id="@+id/button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="32dp"
-        android:layout_marginRight="32dp"
+        android:layout_marginEnd="40dp"
+        android:layout_marginRight="40dp"
         android:text="検索"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintTop_toTopOf="@+id/inputGroupID" />