diff --git a/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java b/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
index edd547a..3fc6e18 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/VoiceActivity.java
@@ -37,7 +37,8 @@
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        setContentView(R.layout.activity_voice);
+        setContentView(R.layout.fragment_maps);
+        //setContentView(R.layout.activity_voice);
         file = new File(getFilesDir(),"Sample.3gp");
         mp = new MediaPlayer();
 
@@ -46,6 +47,7 @@
         Button Record = (Button)findViewById(R.id.button);
         Record.setOnClickListener(new View.OnClickListener(){
             public void onClick(View x){
+                System.out.println("!!!");
                 TextView textView1 = (TextView)findViewById(R.id.Notice);
                 textView1.setText("Record Start!");
                 startRecord();
diff --git a/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java b/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
index f707b41..b5669c9 100644
--- a/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
+++ b/app/src/main/java/org/ntlab/amaryllis/client/fragment/MapsFragment.java
@@ -4,11 +4,15 @@
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
 
+import android.content.Intent;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+
+import android.widget.Button;
+
 import com.google.android.gms.maps.CameraUpdateFactory;
 import com.google.android.gms.maps.GoogleMap;
 import com.google.android.gms.maps.OnMapReadyCallback;
@@ -17,9 +21,12 @@
 import com.google.android.gms.maps.model.MarkerOptions;
 
 import org.ntlab.amaryllis.client.R;
+import org.ntlab.amaryllis.client.VoiceActivity;
 
 public class MapsFragment extends Fragment {
 
+    Button rokuButton;
+
     private OnMapReadyCallback callback = new OnMapReadyCallback() {
 
         /**
@@ -45,15 +52,51 @@
                              @Nullable ViewGroup container,
                              @Nullable Bundle savedInstanceState) {
         return inflater.inflate(R.layout.fragment_maps, container, false);
+
     }
 
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
+
+        rokuButton = (Button)view.findViewById(R.id.button);
+        rokuButton.setOnClickListener(new View.OnClickListener() {
+            public void onClick(View v) {
+                Intent intent = new Intent(getActivity(), VoiceActivity.class);
+                startActivity(intent);
+            }
+        });
         SupportMapFragment mapFragment =
                 (SupportMapFragment) getChildFragmentManager().findFragmentById(R.id.map);
         if (mapFragment != null) {
             mapFragment.getMapAsync(callback);
         }
     }
+
+
+    public class FragmentTest extends Fragment implements View.OnClickListener {
+
+        @Override
+        public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
+            // 第３引数のbooleanは"container"にreturnするViewを追加するかどうか
+            //trueにすると最終的なlayoutに再度、同じView groupが表示されてしまうのでfalseでOKらしい
+            View v = inflater.inflate(R.layout.fragment_maps, container, false);
+
+            // ボタンを取得して、ClickListenerをセット
+            Button btn = (Button)v.findViewById(R.id.button);
+            btn.setOnClickListener(this);
+            return v;
+        }
+
+        @Override
+        public void onClick(View v) {
+            // TODO 自動生成されたメソッド・スタブ
+            System.out.println("!!!");
+        }
+
+    }
+
+
+
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index e1be0c7..7d686f3 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -37,6 +37,18 @@
         app:layout_constraintTop_toTopOf="parent"
         app:layout_constraintVertical_bias="0.431"
         app:navGraph="@navigation/mobile_navigation" />
+    <Button
+        android:id="@+id/button"
+        android:layout_width="61dp"
+        android:layout_height="47dp"
+        android:layout_marginBottom="48dp"
+        android:text="Rec"
+        app:layout_constraintBottom_toTopOf="@+id/nav_view"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.773"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="1.0" />
 
 
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_maps.xml b/app/src/main/res/layout/fragment_maps.xml
index 55e9487..faf35e0 100644
--- a/app/src/main/res/layout/fragment_maps.xml
+++ b/app/src/main/res/layout/fragment_maps.xml
@@ -1,26 +1,35 @@
 <?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=".fragment.MapsFragment">
+
 <fragment xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:map="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/map"
     android:name="com.google.android.gms.maps.SupportMapFragment"
     android:layout_width="match_parent"
-    android:layout_height="match_parent" />
+    android:layout_height="match_parent"
+    tools:context=".fragment.MapsFragment" />
 
-<LinearLayout
-    android:layout_width="411dp"
-    android:layout_height="240dp"
-    android:orientation="vertical"
-    tools:layout_editor_absoluteX="-1dp"
-    tools:layout_editor_absoluteY="0dp">
 
     <Button
         android:id="@+id/button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="録音" />
+        android:text="録音"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="@+id/Notice" />
 
     <FrameLayout
         android:layout_width="67dp"
-        android:layout_height="60dp">
+        android:layout_height="60dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent">
 
         <Button
             android:id="@+id/button2"
@@ -44,12 +53,12 @@
 
     </FrameLayout>
 
-        <TextView
-            android:id="@+id/Notice"
-            android:layout_width="wrap_content"
-            android:layout_height="47dp"
-            android:text="ここにボタンを押した時の挙動が表示されます。"
-            android:textSize="18sp" />
+            <TextView
+                android:id="@+id/Notice"
+                android:layout_width="wrap_content"
+                android:layout_height="47dp"
+                android:text="ここにボタンを押した時の挙動が表示されます。"
+                android:textSize="18sp" />
 
         <TextView
             android:id="@+id/VoiceTime"
@@ -58,5 +67,6 @@
             android:text="ここに再生時間が表示されます。"
             android:textSize="18sp" />
 
-</LinearLayout>
 
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file