diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 04bd41b..76bc4ac 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -7,7 +7,7 @@
     tools:context=".MainActivity">
 
     <TextView
-        android:id="@+id/tv_name"
+        android:id="@+id/tv_name1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -18,20 +18,20 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
-        android:id="@+id/tv_path"
+        android:id="@+id/tv_path1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp"
         android:layout_marginBottom="8dp"
         android:text="1"
-        app:layout_constraintBottom_toTopOf="@+id/btn_back"
+        app:layout_constraintBottom_toTopOf="@+id/btn_back1"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+        app:layout_constraintTop_toBottomOf="@+id/tv_name1" />
 
     <Button
-        android:id="@+id/btn_back"
+        android:id="@+id/btn_back1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
@@ -40,13 +40,13 @@
         android:layout_marginBottom="8dp"
         android:onClick="goBack"
         android:text="結束活動1"
-        app:layout_constraintBottom_toTopOf="@+id/btn_start"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start1"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/btn_start"
+        android:id="@+id/btn_start1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
diff --git a/app/src/main/res/layout/activity_second.xml b/app/src/main/res/layout/activity_second.xml
index 81d7ecb..48b9558 100644
--- a/app/src/main/res/layout/activity_second.xml
+++ b/app/src/main/res/layout/activity_second.xml
@@ -7,7 +7,7 @@
     tools:context=".SecondActivity">
 
     <TextView
-        android:id="@+id/tv_name"
+        android:id="@+id/tv_name2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -18,19 +18,19 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
-        android:id="@+id/tv_path"
+        android:id="@+id/tv_path2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp"
         android:text="TextView"
-        app:layout_constraintBottom_toTopOf="@+id/btn_back"
+        app:layout_constraintBottom_toTopOf="@+id/btn_back2"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+        app:layout_constraintTop_toBottomOf="@+id/tv_name2" />
 
     <Button
-        android:id="@+id/btn_back"
+        android:id="@+id/btn_back2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
@@ -39,13 +39,13 @@
         android:layout_marginBottom="8dp"
         android:onClick="goBack"
         android:text="回到活動1"
-        app:layout_constraintBottom_toTopOf="@+id/btn_start"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start2"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/btn_start"
+        android:id="@+id/btn_start2"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
diff --git a/app/src/main/res/layout/activity_third.xml b/app/src/main/res/layout/activity_third.xml
index cb54ec7..206425d 100644
--- a/app/src/main/res/layout/activity_third.xml
+++ b/app/src/main/res/layout/activity_third.xml
@@ -7,7 +7,7 @@
     tools:context=".ThirdActivity">
 
     <TextView
-        android:id="@+id/tv_name"
+        android:id="@+id/tv_name3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -18,19 +18,19 @@
         app:layout_constraintTop_toTopOf="parent" />
 
     <TextView
-        android:id="@+id/tv_path"
+        android:id="@+id/tv_path3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp"
         android:text="TextView"
-        app:layout_constraintBottom_toTopOf="@+id/btn_back"
+        app:layout_constraintBottom_toTopOf="@+id/btn_back3"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+        app:layout_constraintTop_toBottomOf="@+id/tv_name3" />
 
     <Button
-        android:id="@+id/btn_back"
+        android:id="@+id/btn_back3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
@@ -39,13 +39,13 @@
         android:layout_marginBottom="8dp"
         android:onClick="goBack"
         android:text="回到活動2"
-        app:layout_constraintBottom_toTopOf="@+id/btn_start"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start3"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/btn_start"
+        android:id="@+id/btn_start3"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"