diff --git a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
index ef21a4c..9a69776 100644
--- a/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
+++ b/app/src/main/java/org/ntlab/acanthus_client/views/paint/PaintActivity.java
@@ -1,14 +1,12 @@
 package org.ntlab.acanthus_client.views.paint;
 
+import androidx.annotation.RequiresApi;
 import androidx.appcompat.app.AppCompatActivity;
 import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
-import android.content.Intent;
+import android.os.Build;
 import android.os.Bundle;
-import android.view.View;
-import android.widget.Button;
-import android.widget.TextView;
 
 import org.ntlab.acanthus_client.Acanthus;
 import org.ntlab.acanthus_client.R;
@@ -34,10 +32,12 @@
 
     //-----------------------------------------------------------------
     //-----------------------------------------------------------------
+    @RequiresApi(api = Build.VERSION_CODES.O)
     @Override
     public void onDestroy() {
         super.onDestroy();
         pageViewModel.resetPageNo();
+        paintCanvas.canvasScreenShot();
     }
 
     //-----------------------------------------------------------------