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));