diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index b2205e7..04bd41b 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -6,24 +6,8 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
-    <Button
-        android:id="@+id/button"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginStart="8dp"
-        android:layout_marginTop="8dp"
-        android:layout_marginEnd="8dp"
-        android:layout_marginBottom="8dp"
-        android:onClick="gotoSecondActivity"
-        android:text="開啟活動2"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/button5"
-        app:layout_constraintVertical_bias="0.125" />
-
     <TextView
-        android:id="@+id/textView"
+        android:id="@+id/tv_name"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -33,17 +17,45 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <Button
-        android:id="@+id/button5"
+    <TextView
+        android:id="@+id/tv_path"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
-        android:layout_marginTop="200dp"
         android:layout_marginEnd="8dp"
+        android:layout_marginBottom="8dp"
+        android:text="1"
+        app:layout_constraintBottom_toTopOf="@+id/btn_back"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+
+    <Button
+        android:id="@+id/btn_back"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="164dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="8dp"
         android:onClick="goBack"
         android:text="結束活動1"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <Button
+        android:id="@+id/btn_start"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="164dp"
+        android:onClick="gotoSecondActivity"
+        android:text="開啟活動2"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
 </android.support.constraint.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_second.xml b/app/src/main/res/layout/activity_second.xml
index 0907afa..81d7ecb 100644
--- a/app/src/main/res/layout/activity_second.xml
+++ b/app/src/main/res/layout/activity_second.xml
@@ -6,24 +6,8 @@
     android:layout_height="match_parent"
     tools:context=".SecondActivity">
 
-    <Button
-        android:id="@+id/button2"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginStart="8dp"
-        android:layout_marginTop="8dp"
-        android:layout_marginEnd="8dp"
-        android:layout_marginBottom="8dp"
-        android:onClick="goBack"
-        android:text="回到活動1"
-        app:layout_constraintBottom_toTopOf="@+id/button3"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintVertical_bias="0.848" />
-
     <TextView
-        android:id="@+id/textView2"
+        android:id="@+id/tv_name"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -33,8 +17,35 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
+    <TextView
+        android:id="@+id/tv_path"
+        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_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+
     <Button
-        android:id="@+id/button3"
+        android:id="@+id/btn_back"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="164dp"
+        android:layout_marginEnd="8dp"
+        android:layout_marginBottom="8dp"
+        android:onClick="goBack"
+        android:text="回到活動1"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/btn_start"
         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 5fcb228..cb54ec7 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/textView3"
+        android:id="@+id/tv_name"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="20dp"
@@ -17,28 +17,40 @@
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
-    <Button
-        android:id="@+id/button4"
+    <TextView
+        android:id="@+id/tv_path"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
-        android:layout_marginTop="88dp"
+        android:layout_marginEnd="8dp"
+        android:text="TextView"
+        app:layout_constraintBottom_toTopOf="@+id/btn_back"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/tv_name" />
+
+    <Button
+        android:id="@+id/btn_back"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:layout_marginTop="164dp"
         android:layout_marginEnd="8dp"
         android:layout_marginBottom="8dp"
         android:onClick="goBack"
         android:text="回到活動2"
-        app:layout_constraintBottom_toTopOf="@+id/button6"
+        app:layout_constraintBottom_toTopOf="@+id/btn_start"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />
 
     <Button
-        android:id="@+id/button6"
+        android:id="@+id/btn_start"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_marginStart="8dp"
         android:layout_marginEnd="8dp"
-        android:layout_marginBottom="163dp"
+        android:layout_marginBottom="164dp"
         android:onClick="gotoFirstActivity"
         android:text="開啟活動1"
         app:layout_constraintBottom_toBottomOf="parent"