diff --git a/.idea/caches/build_file_checksums.ser b/.idea/caches/build_file_checksums.ser
index bd5fd19..252850f 100644
--- a/.idea/caches/build_file_checksums.ser
+++ b/.idea/caches/build_file_checksums.ser
Binary files differ
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index e329a11..61e462d 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -19,30 +19,42 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
 
-        <!--無効化の際に<activity></activity>コメントアウトか消すといい-->
-        <!--start-->
-        <activity
-            android:name=".sample.SampleGameActivity"
+        <!-- 無効化の際に<activity></activity>コメントアウトか消すといい -->
+        <!-- start -->
+        <!--<activity-->
+            <!--android:name=".sample.SampleGameActivity"-->
+            <!--android:label="@string/app_name"-->
+            <!--android:screenOrientation="landscape">-->
+            <!--<intent-filter>-->
+                <!--<action android:name="android.intent.action.MAIN" />-->
+
+                <!--<category android:name="android.intent.category.LAUNCHER" />-->
+            <!--</intent-filter>-->
+        <!--</activity>-->
+        <!-- end -->
+
+
+        <!-- start -->
+        <!-- <activity android:name=".cactusClient.MainActivity" -->
+        <!-- android:label="@string/app_name" -->
+        <!-- android:screenOrientation="landscape"> -->
+        <!-- <intent-filter> -->
+        <!-- <action android:name="android.intent.action.MAIN" /> -->
+        <!-- <category android:name="android.intent.category.LAUNCHER" /> -->
+        <!-- </intent-filter> -->
+        <!-- </activity> -->
+        <!-- end -->
+
+        <activity android:name=".cactusClient.tests.SampleActivity"
             android:label="@string/app_name"
-            android:screenOrientation="landscape">
+            android:screenOrientation="landscape"
+            >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
+
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <!--end-->
-
-        <!--start-->
-        <activity android:name=".cactusClient.MainActivity"
-            android:label="@string/app_name"
-            android:screenOrientation="landscape">
-            <intent-filter>
-                <action android:name="android.intent.action.MAIN" />
-                <category android:name="android.intent.category.LAUNCHER" />
-            </intent-filter>
-        </activity>
-        <!--end-->
-
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java
new file mode 100644
index 0000000..f316437
--- /dev/null
+++ b/app/src/main/java/org/ntlab/radishforandroidstudio/cactusClient/tests/SampleActivity.java
@@ -0,0 +1,15 @@
+package org.ntlab.radishforandroidstudio.cactusClient.tests;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+
+import org.ntlab.radishforandroidstudio.R;
+
+public class SampleActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_sample);
+    }
+}
diff --git a/app/src/main/res/layout/activity_sample.xml b/app/src/main/res/layout/activity_sample.xml
new file mode 100644
index 0000000..5293c04
--- /dev/null
+++ b/app/src/main/res/layout/activity_sample.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.constraint.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=".cactusClient.tests.SampleActivity">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file