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 9f744f2..bb755b3 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
@@ -16,13 +16,14 @@
         android:digits="abcdefghijklmnopqrstuvwxyz1234567890-"
         android:ems="10"
         android:gravity="start|top"
+        android:hint="IDを入力してください"
         android:inputType="textEmailAddress"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/button"
-        app:layout_constraintHorizontal_bias="0.765"
+        app:layout_constraintHorizontal_bias="1.0"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toBottomOf="@+id/textView7"
-        app:layout_constraintVertical_bias="0.441" />
+        app:layout_constraintVertical_bias="0.233" />
 
     <TextView
         android:id="@+id/textView7"
@@ -30,7 +31,7 @@
         android:layout_height="75dp"
         android:background="#e6eae3"
         android:gravity="center"
-        android:text="IDを入力してください"
+        android:text="IDでグループに入る"
         android:textSize="24sp"
         app:layout_constraintTop_toTopOf="parent"
         tools:layout_editor_absoluteX="16dp" />
@@ -42,12 +43,12 @@
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginLeft="8dp"
-        android:layout_marginTop="192dp"
+        android:layout_marginTop="160dp"
         android:layout_marginEnd="8dp"
         android:layout_marginRight="8dp"
         android:textSize="24sp"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintHorizontal_bias="0.445"
+        app:layout_constraintHorizontal_bias="0.465"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="@+id/inputGroupID" />
 
@@ -66,11 +67,10 @@
         android:id="@+id/Addbutton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="40dp"
-        android:layout_marginRight="40dp"
+        android:layout_marginTop="60dp"
         android:text="グループに入る"
         android:visibility="invisible"
-        app:layout_constraintBottom_toBottomOf="@+id/IDresult"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="@+id/IDresult" />
+        app:layout_constraintEnd_toEndOf="@+id/IDresult"
+        app:layout_constraintStart_toStartOf="@+id/IDresult"
+        app:layout_constraintTop_toBottomOf="@+id/IDresult" />
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_qrcode_reading.xml b/app/src/main/res/layout/activity_qrcode_reading.xml
index 82e66d2..0b0d88a 100644
--- a/app/src/main/res/layout/activity_qrcode_reading.xml
+++ b/app/src/main/res/layout/activity_qrcode_reading.xml
@@ -5,13 +5,14 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".views.QRcodeReadingActivity">
+
     <TextView
         android:id="@+id/textView7"
         android:layout_width="match_parent"
         android:layout_height="75dp"
         android:background="#e6eae3"
         android:gravity="center"
-        android:text="QRコードで入る"
+        android:text="QRコードでグループに入る"
         android:textSize="24sp"
         app:layout_constraintTop_toTopOf="parent"
         tools:layout_editor_absoluteX="16dp" />
@@ -46,12 +47,10 @@
         android:id="@+id/Addbutton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginEnd="16dp"
-        android:layout_marginRight="16dp"
+        android:layout_marginTop="76dp"
         android:text="グループに入る"
-        app:layout_constraintBottom_toBottomOf="@+id/QRcodeResult"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintTop_toTopOf="@+id/QRcodeResult"
-        app:layout_constraintVertical_bias="0.437" />
+        app:layout_constraintEnd_toEndOf="@+id/QRcodeResult"
+        app:layout_constraintStart_toStartOf="@+id/QRcodeResult"
+        app:layout_constraintTop_toBottomOf="@+id/QRcodeResult" />
 
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file