diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
index bcfa70e..2d78031 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/sample/SampleActivity.java
@@ -23,6 +23,7 @@
 import org.ntlab.radishforandroidstudio.java3d.Material;
 import org.ntlab.radishforandroidstudio.java3d.Vector3f;
 
+//addContentViewの追加のためにSampleを作成
 public class SampleActivity extends RealTime3DActivity {
 
     private OvergroundActor pocha;
@@ -37,10 +38,6 @@
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        //setContentView(R.layout.activity_sample);
-//        addContentView(getLayoutInflater().inflate(R.layout.activity_sample,null).new android.widget.LinearLayout());
-//        addContentView(view, new LinearLayout.LayoutParams());
-        //View view = getLayoutInflater().inflate(R.layout.buttonlayout, null);
         View view1 = getLayoutInflater().inflate(R.layout.button_layout, null);
         addContentView(view1, new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
 
diff --git a/app/src/main/res/layout/button_layout.xml b/app/src/main/res/layout/button_layout.xml
index 57839a0..13961d4 100644
--- a/app/src/main/res/layout/button_layout.xml
+++ b/app/src/main/res/layout/button_layout.xml
@@ -1,12 +1,44 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    tools:layout_editor_absoluteY="81dp">
 
     <Button
         android:id="@+id/button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_weight="1"
-        android:text="Button" />
-</LinearLayout>
+        android:layout_marginBottom="205dp"
+        android:text="Button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView2" />
+
+    <TextView
+        android:id="@+id/textView2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="16dp"
+        android:layout_marginTop="16dp"
+        android:text="Cactus"
+        android:textColor="@android:color/background_light"
+        android:textSize="30sp"
+        app:layout_constraintBottom_toTopOf="@+id/button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/button2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginBottom="84dp"
+        android:text="Button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</android.support.constraint.ConstraintLayout>