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