diff --git a/.idea/misc.xml b/.idea/misc.xml
index 3b4f6d8..cf9962a 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -18,7 +18,7 @@
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout-land/activity_main.xml" value="0.31040564373897706" />
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout-sw600dp/activity_main.xml" value="0.2189207650273224" />
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_create_room.xml" value="0.29030797101449274" />
-        <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_drawing.xml" value="0.36614583333333334" />
+        <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_drawing.xml" value="0.5" />
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_enter_room.xml" value="0.2791666666666667" />
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_game.xml" value="0.36614583333333334" />
         <entry key="..\:/Users/student/StudioProjects/IrisClient/app/src/main/res/layout/activity_main.xml" value="0.29030797101449274" />
diff --git a/app/build.gradle b/app/build.gradle
index 750e517..9b6aef0 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -32,6 +32,7 @@
 
 dependencies {
 
+    implementation 'androidx.compose.ui:ui-graphics:1.0.0-rc01'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
 
 
diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
index b2c9f43..ba196e6 100644
--- a/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
@@ -19,6 +19,8 @@
     private DrawingCanvas drawingCanvas;
     private DrawingStateViewModel drawingStateViewModel;
 
+    private List<String> keywordList;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
@@ -37,19 +39,26 @@
 
         findViewById(R.id.okButtton).setOnClickListener(this);//お絵描き終了ボタン
         findViewById(R.id.clearButton).setOnClickListener(this);//画面クリアボタン
+        findViewById(R.id.eraserButton).setOnClickListener(this);//消しゴムボタン
 
         TextView textKeyword =(TextView)findViewById(R.id.textKeyword);//keywordのTextView
         drawingCanvas = (DrawingCanvas) findViewById(R.id.drawingCanvas);
 
         //getKeywords
-        //List<String> keywords = drawingStateViewModel.getKeywords(rid);
+
+        drawingStateViewModel.getKeywords().observe(this, new Observer<List<String>>(){
+           @Override
+           public void onChanged(List<String> keywords) {
+               keywordList = keywords;
+           }
+        });
 
         //getDno
         drawingStateViewModel.getDno().observe(this, new Observer<Integer>() {
             @Override
             public void onChanged(Integer dno) {
-                //String keyword = keywords.get(dno);
-                textKeyword.setText(""+dno);
+                String keyword = keywordList.get(dno);
+                textKeyword.setText("Dno: " + dno + ", Keyword: " + keyword);
             }
         });
 
@@ -67,6 +76,9 @@
                 }
             }
         });
+
+        //getKeywordの呼び出し
+        drawingStateViewModel.init();
         //タイマースタート呼び出し
         drawingStateViewModel.start(500);
     }
@@ -78,6 +90,8 @@
             drawingStateViewModel.putDrawing(bitmap);
         }else if(v.getId() == R.id.clearButton){//clearButtonが押されたときの処理
             drawingCanvas.clearCanvas();
+        }else if(v.getId() == R.id.eraserButton){//eraserButtonが押されたときの処理
+            drawingCanvas.eraserPaint();
         }
     }
 
diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java b/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
index 484798d..1c79e96 100644
--- a/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingCanvas.java
@@ -5,6 +5,8 @@
 import android.graphics.Color;
 import android.graphics.Paint;
 import android.graphics.Path;
+import android.graphics.PorterDuff;
+import android.graphics.PorterDuffXfermode;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.view.View;
@@ -67,4 +69,12 @@
         invalidate();
     }
 
+    //消しゴム
+    public void eraserPaint(){
+        //paint = new Paint();
+//        Paint paint = new Paint();
+//        paint.setColor(Color.TRANSPARENT);
+//        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
+    }
+
 }
diff --git a/app/src/main/res/layout/activity_drawing.xml b/app/src/main/res/layout/activity_drawing.xml
index 8850c50..84e2276 100644
--- a/app/src/main/res/layout/activity_drawing.xml
+++ b/app/src/main/res/layout/activity_drawing.xml
@@ -42,6 +42,18 @@
         app:layout_constraintTop_toBottomOf="@+id/testText"
         app:layout_constraintVertical_bias="1.0" />
 
+    <Button
+        android:id="@+id/eraserButton"
+        android:layout_width="123dp"
+        android:layout_height="50dp"
+        android:text="eraser"
+        app:layout_constraintBottom_toTopOf="@+id/clearButton"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.098"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/testText"
+        app:layout_constraintVertical_bias="0.926" />
+
     <TextView
         android:id="@+id/testText"
         android:layout_width="87dp"
@@ -76,4 +88,5 @@
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_bias="0.044" />
 
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file