diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 300967e..63ef451 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,7 +1,13 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.example.cosmosclient">
 
+    android:hardwareAccelerated="true"
+    <!--ここからバーコードリーダーのアクセス許可-->
+    <uses-permission android:name="android.permission.CAMERA"/>
+    <!--<uses-permission android:name="android.permission.FLASHLIGHT"/>-->
+    <!--バーコードリーダーアクセス許可終わり-->
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -9,6 +15,14 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
+        <activity
+            android:name="com.journeyapps.barcodescanner.CaptureActivity"
+            android:screenOrientation="fullSensor"
+            tools:replace="screenOrientation" />
+        <activity android:name=".views.QRcodeReadeingActivity"
+            android:screenOrientation="portrait"
+            tools:replace="screenOrientation">
+        </activity>
         <activity android:name=".views.SigninActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
@@ -16,29 +30,18 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-
         <activity android:name=".views.SignupActivity" />
-        <activity android:name=".MainActivity">
-
-        </activity>
-
-
+        <activity android:name=".MainActivity"></activity>
         <activity
             android:name=".views.RequestListActivity"
             android:label="@string/title_activity_request_list"
-            android:theme="@style/AppTheme.NoActionBar">
-        </activity>
-
-        <activity android:name=".views.DisplayQRActivity"></activity>
+            android:theme="@style/AppTheme.NoActionBar"></activity>
+        <activity android:name=".views.DisplayQRActivity" />
         <activity android:name=".views.AddMemberActivity" />
-
         <activity
             android:name=".views.GroupList"
             android:label="@string/title_activity_group_list"
-            android:theme="@style/AppTheme.NoActionBar"></activity>
-
-
-
+            android:theme="@style/AppTheme.NoActionBar" />
     </application>
 
 </manifest>
\ No newline at end of file
diff --git a/app/src/main/java/com/example/cosmosclient/views/QRcodeReadeingActivity.java b/app/src/main/java/com/example/cosmosclient/views/QRcodeReadeingActivity.java
new file mode 100644
index 0000000..73fd7a6
--- /dev/null
+++ b/app/src/main/java/com/example/cosmosclient/views/QRcodeReadeingActivity.java
@@ -0,0 +1,45 @@
+package com.example.cosmosclient.views;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.util.Log;
+import android.view.View;
+import android.widget.TextView;
+
+import com.example.cosmosclient.R;
+import com.google.zxing.integration.android.IntentIntegrator;
+import com.google.zxing.integration.android.IntentResult;
+import com.journeyapps.barcodescanner.CaptureActivity;
+
+public class QRcodeReadeingActivity extends CaptureActivity {
+    public String QRcodeData = null;
+    TextView QRcodeResult;
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_qrcode_readeing);
+        QRcodeResult = findViewById(R.id.QRcodeResult);
+
+        //ここでQRコードリーダーオブジェクト生成
+        IntentIntegrator integrator = new IntentIntegrator(this);
+//        new IntentIntegrator(QRcodeReadeingActivity.this).initiateScan();
+        // スキャン画面の回転の制御
+        integrator.setOrientationLocked(false);
+        //バーコードリーダーの起動
+        integrator.initiateScan();
+
+    }
+
+    //QRコードから読み取った結果の取得
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
+        IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
+        if(result != null) {
+            QRcodeData = (String)result.getContents();
+            QRcodeResult.setText(QRcodeData);
+        } else {
+            super.onActivityResult(requestCode, resultCode, data);
+        }
+    }
+}
diff --git a/app/src/main/res/layout/activity_qrcode_readeing.xml b/app/src/main/res/layout/activity_qrcode_readeing.xml
new file mode 100644
index 0000000..c03b8c4
--- /dev/null
+++ b/app/src/main/res/layout/activity_qrcode_readeing.xml
@@ -0,0 +1,20 @@
+<?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=".views.QRcodeReadeingActivity">
+
+    <TextView
+        android:id="@+id/QRcodeResult"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:gravity="center"
+        android:text="aaaaaaaaaaaaaaaa"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.5"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</android.support.constraint.ConstraintLayout>
\ No newline at end of file