diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTCameraController.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTCameraController.java
new file mode 100644
index 0000000..cbf951e
--- /dev/null
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTCameraController.java
@@ -0,0 +1,34 @@
+package org.ntlab.radishforandroidstudio.framework.RWT;
+
+import android.content.Context;
+import android.support.annotation.Nullable;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+import org.ntlab.radishforandroidstudio.framework.listener.PadListener;
+import org.ntlab.radishforandroidstudio.framework.subject.PadSubject;
+
+public class RWTCameraController extends RWTView {
+    public RWTCameraController(Context context) {
+        super(context);
+    }
+
+    public RWTCameraController(Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    public RWTCameraController(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+
+
+        return true;
+    }
+
+    public void addListener(PadListener listener) {
+        PadSubject.getInstance().addListener(listener);
+    }
+}
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTPad.java b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTPad.java
index d756d18..41b78d3 100644
--- a/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTPad.java
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/framework/RWT/RWTPad.java
@@ -19,17 +19,14 @@
 
     public RWTPad(Context context) {
         super(context);
-        init();
     }
 
     public RWTPad(Context context, AttributeSet attrs) {
         super(context, attrs);
-        init();
     }
 
     public RWTPad(Context context, AttributeSet attrs, int defStyleAttr) {
         super(context, attrs, defStyleAttr);
-        init();
     }
 
     @Override
diff --git a/app/src/main/res/layout/ui_fragment.xml b/app/src/main/res/layout/ui_fragment.xml
index 7786ac5..6a89e34 100644
--- a/app/src/main/res/layout/ui_fragment.xml
+++ b/app/src/main/res/layout/ui_fragment.xml
@@ -6,7 +6,7 @@
     android:layout_height="match_parent">
 
     <org.ntlab.radishforandroidstudio.framework.RWT.RWTPad
-        android:id="@+id/button3"
+        android:id="@+id/pad"
         android:layout_width="150dp"
         android:layout_height="150dp"
         android:text="Button"
diff --git a/build.gradle b/build.gradle
index 1a3d812..43c0708 100644
--- a/build.gradle
+++ b/build.gradle
@@ -7,7 +7,7 @@
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.1.2'
+        classpath 'com.android.tools.build:gradle:3.1.3'
         
 
         // NOTE: Do not place your application dependencies here; they belong