diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 0a5abc1..b5c06b6 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -11,8 +11,8 @@
         android:theme="@style/Theme.IrisClient">
         <activity
             android:name=".MainActivity"
-            android:screenOrientation="landscape"
-            android:exported="true">
+            android:exported="true"
+            android:screenOrientation="landscape">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
@@ -22,23 +22,23 @@
         <activity
             android:name=".EnterRoomActivity"
             android:exported="true"
-            android:screenOrientation="landscape" >
-        </activity>
+            android:screenOrientation="landscape"></activity>
         <activity
             android:name=".CreateRoomActivity"
-            android:screenOrientation="landscape"
-            android:exported="true" >
-        </activity>
+            android:exported="true"
+            android:screenOrientation="landscape"></activity>
         <activity
             android:name=".MemberRoomActivity"
-            android:screenOrientation="landscape"
-            android:exported="true" >
-        </activity>
+            android:exported="true"
+            android:screenOrientation="landscape"></activity>
         <activity
             android:name=".OwnerRoomActivity"
-            android:screenOrientation="landscape"
-            android:exported="true" >
-        </activity>
+            android:exported="true"
+            android:screenOrientation="landscape"></activity>
+        <activity
+            android:name=".DrawingActivity"
+            android:exported="true"
+            android:screenOrientation="landscape"></activity>
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
new file mode 100644
index 0000000..4575e47
--- /dev/null
+++ b/app/src/main/java/org/ntlab/irisclient/DrawingActivity.java
@@ -0,0 +1,14 @@
+package org.ntlab.irisclient;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+
+public class DrawingActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_drawing);
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_drawing.xml b/app/src/main/res/layout/activity_drawing.xml
new file mode 100644
index 0000000..8b6405a
--- /dev/null
+++ b/app/src/main/res/layout/activity_drawing.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.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"
+    tools:context=".DrawingActivity">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file