QRリーダから戻った時にクラッシュするバグを修正しました

Rca/add chrome custom tabs

.idea/gradle.xml

@@ -1,10 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
+        <option name="testRunner" value="GRADLE" />
         <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="gradleJvm" value="Embedded JDK" />
         <option name="modules">
           <set>
             <option value="$PROJECT_DIR$" />

.idea/kotlinc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="1.7.20" />
+  </component>
+</project>

.idea/misc.xml

@@ -1,7 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_17">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_17" project-jdk-name="jbr-17" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">

app/build.gradle

@@ -1,5 +1,7 @@
 plugins {
     id 'com.android.application'
+    id 'org.jetbrains.kotlin.android'
+    id 'com.google.gms.google-services'
 }
 
 android {
@@ -14,6 +16,9 @@ android {
         versionName "1.0"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+        vectorDrawables {
+            useSupportLibrary true
+        }
     }
 
     buildTypes {
@@ -26,6 +31,20 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    kotlinOptions {
+        jvmTarget = '1.8'
+    }
+    buildFeatures {
+        compose true
+    }
+    composeOptions {
+        kotlinCompilerExtensionVersion '1.3.2'
+    }
+    packagingOptions {
+        resources {
+            excludes += '/META-INF/{AL2.0,LGPL2.1}'
+        }
+    }
 }
 
 dependencies {
@@ -33,9 +52,25 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.6.1'
     implementation 'com.google.android.material:material:1.5.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
+    implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.3.1'
+    implementation 'androidx.activity:activity-compose:1.5.1'
+    implementation platform('androidx.compose:compose-bom:2022.10.00')
+    implementation 'androidx.compose.ui:ui'
+    implementation 'androidx.compose.ui:ui-graphics'
+    implementation 'androidx.compose.ui:ui-tooling-preview'
+    implementation 'androidx.compose.material3:material3'
 
+    // Import the BoM for the Firebase platform
+    implementation(platform("com.google.firebase:firebase-bom:32.7.0"))
+
+    // Declare the dependency for the Cloud Firestore library
+    // When using the BoM, you don't specify versions in Firebase library dependencies
+    implementation("com.google.firebase:firebase-firestore")
 
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
+    implementation 'com.journeyapps:zxing-android-embedded:4.3.0'//QR用zxingライブラリ
+
+    implementation 'androidx.browser:browser:1.5.0'
 }

app/google-services.json

@@ -0,0 +1,67 @@
+{
+  "project_info": {
+    "project_number": "814788024795",
+    "project_id": "practicefirestore1-8808c",
+    "storage_bucket": "practicefirestore1-8808c.appspot.com"
+  },
+  "client": [
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:814788024795:android:79602ef613cc9860c76ffe",
+        "android_client_info": {
+          "package_name": "com.example.childguard"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyAVpoftIYGZwiPRpuI56hoV8ifA2rbZGb4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:814788024795:android:7c572a838331bba1c76ffe",
+        "android_client_info": {
+          "package_name": "com.example.connecttointernet"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyAVpoftIYGZwiPRpuI56hoV8ifA2rbZGb4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    },
+    {
+      "client_info": {
+        "mobilesdk_app_id": "1:814788024795:android:67c86939b6350f02c76ffe",
+        "android_client_info": {
+          "package_name": "com.example.practicefirestore1"
+        }
+      },
+      "oauth_client": [],
+      "api_key": [
+        {
+          "current_key": "AIzaSyAVpoftIYGZwiPRpuI56hoV8ifA2rbZGb4"
+        }
+      ],
+      "services": {
+        "appinvite_service": {
+          "other_platform_oauth_client": []
+        }
+      }
+    }
+  ],
+  "configuration_version": "1"
+}

app/src/main/AndroidManifest.xml

@@ -2,6 +2,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.VIBRATE" />
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -12,6 +20,11 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.ChildGuard"
         tools:targetApi="31">
+        <activity
+            android:name=".First_Start"
+            android:exported="false"
+            android:label="@string/title_activity_first_start"
+            android:theme="@style/Theme.ChildGuard" />
         <activity
             android:name=".MainActivity"
             android:exported="true">

app/src/main/java/com/example/childguard/First_Start.java

@@ -0,0 +1,14 @@
+package com.example.childguard;
+
+import android.os.Bundle;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class First_Start extends AppCompatActivity {
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.first_start);
+
+    }
+
+}

app/src/main/java/com/example/childguard/HomeFragment.java

@@ -1,12 +1,34 @@
 package com.example.childguard;
 
+import static android.content.ContentValues.TAG;
+
+import android.content.SharedPreferences;
+import android.graphics.Bitmap;
 import android.os.Bundle;
-
+import android.preference.PreferenceManager;
-import androidx.fragment.app.Fragment;
+import android.util.Log;
-
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.core.content.res.ResourcesCompat;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+
+import com.google.android.gms.tasks.OnFailureListener;
+import com.google.android.gms.tasks.OnSuccessListener;
+import com.google.firebase.firestore.DocumentReference;
+import com.google.firebase.firestore.FirebaseFirestore;
+
+import java.util.HashMap;
+import java.util.Map;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -14,6 +36,7 @@ import android.view.ViewGroup;
  * create an instance of this fragment.
  */
 public class HomeFragment extends Fragment {
+    FirebaseFirestore db = FirebaseFirestore.getInstance();//Firebaseとの紐づけ
 
     // TODO: Rename parameter arguments, choose names that match
     // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
@@ -21,7 +44,7 @@ public class HomeFragment extends Fragment {
     private static final String ARG_PARAM2 = "param2";
 
     // TODO: Rename and change types of parameters
-    private String mParam1;
+    private String str_key;
     private String mParam2;
 
     public HomeFragment() {
@@ -50,7 +73,7 @@ public class HomeFragment extends Fragment {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         if (getArguments() != null) {
-            mParam1 = getArguments().getString(ARG_PARAM1);
+            // mParam1 = getArguments().getString(ARG_PARAM1);
             mParam2 = getArguments().getString(ARG_PARAM2);
         }
     }
@@ -58,7 +81,122 @@ public class HomeFragment extends Fragment {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
+        //    Log.d("HomeFlagment_cnt", "aaaaa");
         // Inflate the layout for this fragment
-        return inflater.inflate(R.layout.fragment_home, container, false);
+        View view = inflater.inflate(R.layout.fragment_home, container, false);
+        MainActivity activity = (MainActivity) getActivity();
+        //共有プリファレンス 全体の準備
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
+        //QRコード印刷の処理
+        Button bt1 = view.findViewById(R.id.QRprinting);
+        bt1.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //初回起動かを保存する変数
+                boolean alreadySaved = preferences.getBoolean("alreadySaved", false);
+                //ボタン変数の宣言
+                Button parent = view.findViewById(R.id.QRprinting);
+                Button born = view.findViewById(R.id.QRprinting);
+                //falseのときにFirebaseへの登録
+                if (alreadySaved) {
+                    Log.d("HomeFragment", "already printed");
+                   //画面遷移＆ID受け渡し
+                    Toast.makeText(getActivity(),"再印刷",Toast.LENGTH_SHORT).show();
+                    QrPrintFragment qrPrintFragment = new QrPrintFragment();
+                    replaceFragment(qrPrintFragment);
+                    return;
+                } else Log.d("HomeFragment", "not printed yet"); // debug
+
+                String valueParent = parent.getText().toString();//変数に文字列を代入
+                String valueBorn = born.getText().toString();//変数に文字列を代入
+                Map<String, String> user = new HashMap<>();//mapの宣言
+
+                Log.d("HomeFragment", "onClick is called");
+
+                //mapに入れる
+                user.put("parent", valueParent);
+                user.put("born", valueBorn);
+                //新しいドキュメントにIDを作って追加
+                db.collection("users")
+                        .add(user)
+                        .addOnSuccessListener(new OnSuccessListener<DocumentReference>() {
+                            @Override
+                            public void onSuccess(DocumentReference documentReference) {
+                                //成功したら
+                                //documentReference.getId()でID取得
+                                Log.d(TAG, "DocumentSnapshot added with ID: " + documentReference.getId());
+                                SharedPreferences.Editor e = preferences.edit();
+                                // キー"alreadySaved"の値をtrueにする
+                                e.putBoolean("alreadySaved", true);
+                                //確定処理
+                                e.apply();
+                                //画面遷移＆ID受け渡し
+                                str_key = "" + documentReference.getId();
+                                Toast.makeText(getActivity(),"初回登録",Toast.LENGTH_SHORT).show();
+                                QrPrintFragment qrPrintFragment = new QrPrintFragment();
+                                Bundle bundle = new Bundle();
+                                bundle.putString("STR_KEY",str_key);
+                                //値を書き込む
+                                qrPrintFragment.setArguments(bundle);
+                                replaceFragment(qrPrintFragment);
+
+                            }
+                        })
+                        .addOnFailureListener(new OnFailureListener() {
+                            @Override
+                            public void onFailure(@NonNull Exception e) {
+                                //失敗したら
+                                Log.w(TAG, "Error adding document", e);
+                            }
+                        });
+
+
+            }
+        });
+        //bluetooth設定ボタンの処理
+        Button bt2 = view.findViewById(R.id.Bluetooth_setup);
+        bt2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                replaceFragment(new bluetooth_setupFragment());
+            }
+        });
+        return view;
+    }
+
+    @Override
+    public void onResume() {
+        super.onResume();
+        Log.d("HomeFragment", "onResume: called");
+        TextView situationTextView = getView().findViewById(R.id.situation);
+        FrameLayout situation_bg = getView().findViewById(R.id.situation_bg);
+        updateInCarStatus(situationTextView, situation_bg);
+    }
+    public void updateInCarStatus(TextView situationTextView, FrameLayout situation_bg) {
+        SharedPreferences sharedPreferences = getActivity().getSharedPreferences("default", 0);
+
+        Log.d("HomeFragment", "updateInCarStatus: " + sharedPreferences.getBoolean("inCar", false));
+        if (sharedPreferences.getBoolean("inCar", false)) {
+            situationTextView.setText("\n降車状態");
+            situation_bg.setBackground(ResourcesCompat.getDrawable(getResources(), R.drawable.frame_style, null));
+        } else {
+            situationTextView.setText("\n乗車状態");
+            situation_bg.setBackground(ResourcesCompat.getDrawable(getResources(), R.drawable.frame_style_orange, null));
+        }
+
+    }
+
+    //画面遷移メソッド
+    private void replaceFragment(Fragment fragment) {
+        // フラグメントマネージャーの取得
+        FragmentManager manager = getParentFragmentManager(); // アクティビティではgetSupportFragmentManager()?
+        // フラグメントトランザクションの開始
+        FragmentTransaction transaction = manager.beginTransaction();
+        // レイアウトをfragmentに置き換え（追加）
+        transaction.replace(R.id.fragmentContainerView, fragment);
+        // 置き換えのトランザクションをバックスタックに保存する
+        transaction.addToBackStack(null);
+        // フラグメントトランザクションをコミット
+        transaction.commit();
     }
 }

app/src/main/java/com/example/childguard/MainActivity.java

@@ -1,18 +1,47 @@
 package com.example.childguard;
 
+import androidx.appcompat.app.ActionBar;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.NotificationManagerCompat;
 
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothManager;
+import android.content.Context;
+import android.content.pm.PackageManager;
 import android.os.Bundle;
+import android.os.Vibrator;
 
 import com.google.android.material.bottomnavigation.BottomNavigationView;
 
+import java.util.Random;
+import java.util.UUID;
+
 public class MainActivity extends AppCompatActivity {
+
+    BluetoothManager bluetoothManager;
+    BluetoothAdapter bluetoothAdapter;
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
 
+        //通知のやつ↓
+        int importance = NotificationManager.IMPORTANCE_DEFAULT;
+
+        NotificationChannel channel = new NotificationChannel("CHANNEL_ID", "サンプルアプリ", importance);
+        channel.setDescription("説明・説明　ここに通知の説明を書くことができる");
+
+        NotificationManager notificationManager = getSystemService(NotificationManager.class);
+        notificationManager.createNotificationChannel(channel);
+        //通知のやつ↑
+
+
         BottomNavigationView bottomNavigationView = findViewById(R.id.nav_view);
 
         bottomNavigationView.setOnNavigationItemSelectedListener(v -> {
@@ -34,4 +63,36 @@ public class MainActivity extends AppCompatActivity {
 
         });
     }
+
+    //↓通知のやつ
+    public void notifyTest() {
+        ((Vibrator)getSystemService(Context.VIBRATOR_SERVICE)).vibrate(1000);
+        NotificationCompat.Builder builder = new NotificationCompat
+                .Builder(this, "CHANNEL_ID")
+                .setSmallIcon(android.R.drawable.ic_menu_info_details)
+                .setContentTitle("タイトル")
+                .setContentText("メッセージ・メッセージ")
+                .setPriority(NotificationCompat.PRIORITY_DEFAULT);
+
+        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
+
+        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+            return;
+        }
+        notificationManager.notify(R.string.app_name, builder.build());
+
+
+    }
+    //Bluetooth_setupの戻るボタン
+    public void setupBackButton(boolean enableBackButton){
+        ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayHomeAsUpEnabled(enableBackButton);
+    }
 }

app/src/main/java/com/example/childguard/QR.java

@@ -0,0 +1,33 @@
+package com.example.childguard;
+
+import android.graphics.Color;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.widget.TextView;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+public class QR extends AppCompatActivity {
+    String get_on="乗車状態";
+    String get_off ="降車状態";
+    TextView tv=findViewById(R.id.situation);
+    @Override
+    protected void onCreate(Bundle savedInstanceState){
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.fragment_qr);
+        //多分いらないコード
+//        findViewById(R.id.camera).setOnClickListener(
+//                v -> {
+//                    if(get_on.equals(tv.getText().toString())){
+//                        tv.setText(get_off);
+//                        findViewById(R.id.situation_bg).setBackgroundColor(Color.parseColor("#dcdcdc"));
+//                    }
+//                    else {
+//                        tv.setText(get_on);
+//                        findViewById(R.id.situation_bg).setBackgroundColor(Color.parseColor("#ff4500"));
+//                    }
+//                }
+//        );
+    }
+
+}

app/src/main/java/com/example/childguard/QRFragment.java

@@ -1,12 +1,30 @@
 package com.example.childguard;
 
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.net.Uri;
 import android.os.Bundle;
 
+import androidx.activity.result.ActivityResultLauncher;
+import androidx.activity.result.contract.ActivityResultContracts;
+import androidx.browser.customtabs.CustomTabsIntent;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
 
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.Toast;
+
+import com.google.zxing.integration.android.IntentIntegrator;
+import com.google.zxing.integration.android.IntentResult;
+import com.journeyapps.barcodescanner.ScanContract;
+import com.journeyapps.barcodescanner.ScanOptions;
+
+import java.util.Objects;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -14,7 +32,8 @@ import android.view.ViewGroup;
  * create an instance of this fragment.
  */
 public class QRFragment extends Fragment {
-
+    //QRコードから受け取ったURLの受け渡しの宣言
+//   OnDataPass dataPass;
     // TODO: Rename parameter arguments, choose names that match
     // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
     private static final String ARG_PARAM1 = "param1";
@@ -53,12 +72,53 @@ public class QRFragment extends Fragment {
             mParam1 = getArguments().getString(ARG_PARAM1);
             mParam2 = getArguments().getString(ARG_PARAM2);
         }
+
+
     }
 
+    private final ActivityResultLauncher<ScanOptions> fragmentLauncher = registerForActivityResult(new ScanContract(),
+            result -> {
+                    //result.getContents()でURLを入手
+                    //読み取ったQRコードがChiled Guard用サイトのドメインを含むかの判定
+                if(!((result.getContents()).contains("https://practicefirestore1-8808c.web.app/"))) {
+                    Toast.makeText(getContext(), "Chiled Guardに対応するQRコードではありません", Toast.LENGTH_LONG).show();
+                } else {
+                    //URLの表示
+                    Toast.makeText(getContext(), result.getContents(), Toast.LENGTH_SHORT).show();
+                    //ブラウザを起動し、URL先のサイトを開く
+                    CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
+                    CustomTabsIntent customTabsIntent = builder.build();
+                    customTabsIntent.launchUrl(requireContext(), Uri.parse(result.getContents()));
+                }
+
+            });
+
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
                              Bundle savedInstanceState) {
         // Inflate the layout for this fragment
-        return inflater.inflate(R.layout.fragment_qr, container, false);
+        View view = inflater.inflate(R.layout.fragment_qr, container, false);
+
+
+            Log.d("QRFragment", "onClick: called");
+            //QRリーダ起動
+            fragmentLauncher.launch(new ScanOptions());
+            HomeFragment homeFragment=new HomeFragment();
+            replaceFragment(homeFragment);
+        return view;
     }
-}
+    //画面遷移メソッド
+    private void replaceFragment(Fragment fragment) {
+        // フラグメントマネージャーの取得
+        FragmentManager manager = getParentFragmentManager(); // アクティビティではgetSupportFragmentManager()?
+        // フラグメントトランザクションの開始
+        FragmentTransaction transaction = manager.beginTransaction();
+        // レイアウトをfragmentに置き換え（追加）
+        transaction.replace(R.id.fragmentContainerView, fragment);
+        // 置き換えのトランザクションをバックスタックに保存する
+        transaction.addToBackStack(null);
+        // フラグメントトランザクションをコミット
+        transaction.commit();
+    }
+}
+

app/src/main/java/com/example/childguard/QrPrintFragment.java

@@ -0,0 +1,154 @@
+package com.example.childguard;
+
+import android.content.SharedPreferences;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.drawable.BitmapDrawable;
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+import androidx.print.PrintHelper;
+
+import android.preference.PreferenceManager;
+import android.util.AndroidRuntimeException;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import com.google.zxing.BarcodeFormat;
+import com.google.zxing.WriterException;
+import com.journeyapps.barcodescanner.BarcodeEncoder;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link QrPrintFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class QrPrintFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public QrPrintFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment QrPrintFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static QrPrintFragment newInstance(String param1, String param2) {
+        QrPrintFragment fragment = new QrPrintFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate (Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+
+        }
+    }
+
+   // @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        //共有プリファレンス 全体の準備
+        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(getActivity());
+        //User毎のドメインを保存する
+        String IdPref=preferences.getString("ID",null);
+        // Inflate the layout for this fragment
+        View view=inflater.inflate(R.layout.fragment_qr_print, container, false);;
+        //固定のドメイン
+        String KoteiURL = "https://practicefirestore1-8808c.web.app/?id=";
+        //すべてのドメイン
+        String AllURL;
+        //IdPrefにの値が初期値の場合
+        if(IdPref==null) {
+            //User毎のドメイン
+            String userURL = getArguments().getString("STR_KEY");
+            //キー"ID"の値をuserURLの値にする
+            SharedPreferences.Editor e = preferences.edit();
+            e.putString("ID", userURL);
+            //確定処理
+            e.apply();
+            //二つのドメインを合成する
+            AllURL=KoteiURL+userURL;
+        }else{
+            //二つのドメインを合成する
+            AllURL=KoteiURL+IdPref;
+        }
+
+        int size = 2500;
+        ImageView imageViewQrCode;
+        Bitmap QRGazou;
+        try {
+            //QRコード生成
+            BarcodeEncoder barcodeEncoder = new BarcodeEncoder();
+            Bitmap bitmapqr = barcodeEncoder.encodeBitmap(AllURL, BarcodeFormat.QR_CODE, size, size);
+            imageViewQrCode = (ImageView) view.findViewById(R.id.qr_view);
+            imageViewQrCode.setTranslationX(1000);
+            imageViewQrCode.setTranslationY(1000);
+            imageViewQrCode.setImageBitmap(bitmapqr);
+        } catch (WriterException e) {
+            throw new AndroidRuntimeException("Barcode Error.", e);
+        }
+        //    画像合成の準備
+        //    ここのエラーは直すと何故か動かなくなる。このままで動くので放置
+        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a_group_qr_sos);
+        Bitmap bitmap1 = ((BitmapDrawable) imageViewQrCode.getDrawable()).getBitmap();
+        int width = bitmap.getWidth(); // 元ファイルの幅取得
+        int height = bitmap.getHeight(); // 元ファイルの高さ取得
+        QRGazou = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
+        //Canvasの準備
+        Canvas canvas = new Canvas(QRGazou);
+        //画像のサイズの調整
+        int disWidth = (width - bitmap1.getWidth()) / 2;
+        int disHeight = (int) ((height - bitmap1.getHeight()) / 1.3);
+        canvas.drawBitmap(bitmap, 0, 0, (Paint) null); // image, x座標, y座標, Paintインスタンス
+        canvas.drawBitmap(bitmap1, disWidth, disHeight, (Paint) null); // 画像合成
+        //Androidからプリンターへ印刷指示を出すサポートライブラリ
+        PrintHelper printHelper = new PrintHelper(getActivity());
+        printHelper.setColorMode(PrintHelper.COLOR_MODE_COLOR);
+        printHelper.setScaleMode(PrintHelper.SCALE_MODE_FIT);
+        printHelper.printBitmap("job_name", QRGazou);
+        HomeFragment homeFragment=new HomeFragment();
+        replaceFragment(homeFragment);
+        return view;
+    }
+      //画面遷移メソッド
+    private void replaceFragment(Fragment fragment) {
+        // フラグメントマネージャーの取得
+        FragmentManager manager = getParentFragmentManager(); // アクティビティではgetSupportFragmentManager()?
+        // フラグメントトランザクションの開始
+        FragmentTransaction transaction = manager.beginTransaction();
+        // レイアウトをfragmentに置き換え（追加）
+        transaction.replace(R.id.fragmentContainerView, fragment);
+        // 置き換えのトランザクションをバックスタックに保存する
+        transaction.addToBackStack(null);
+        // フラグメントトランザクションをコミット
+        transaction.commit();
+    }
+}

app/src/main/java/com/example/childguard/RecyclerAdapter.java

@@ -0,0 +1,57 @@
+package com.example.childguard;
+
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ItemViewHolder> {
+
+    ArrayList<String[]> deviceList;
+
+    // Constructor
+    public RecyclerAdapter(ArrayList<String[]> deviceList) {
+        // Init
+        Log.d("RecyclerAdapter", "Constructor called");
+        this.deviceList = deviceList;
+    }
+
+    @NonNull
+    @Override
+    public RecyclerAdapter.ItemViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(parent.getContext());
+        View itemView = inflater.inflate(R.layout.recycler_row, parent, false);
+        return new ItemViewHolder(itemView);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ItemViewHolder holder, int position) {
+        holder.textView.setText(deviceList.get(position)[0]);
+        holder.textView.setOnClickListener( v -> {
+            Toast.makeText(v.getContext(), deviceList.get(position)[1], Toast.LENGTH_SHORT).show();
+        });
+    }
+
+    @Override
+    public int getItemCount() {
+        return deviceList.size();
+    }
+
+    static class ItemViewHolder extends RecyclerView.ViewHolder {
+        TextView textView;
+
+        public ItemViewHolder(@NonNull View itemView) {
+            super(itemView);
+            textView = itemView.findViewById(R.id.textView1);
+        }
+    }
+
+}
+

app/src/main/java/com/example/childguard/bluetooth_setupFragment.java

@@ -0,0 +1,147 @@
+package com.example.childguard;
+
+import android.app.Activity;
+import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
+import android.bluetooth.BluetoothManager;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.Bundle;
+
+import androidx.core.app.ActivityCompat;
+import androidx.core.app.NotificationCompat;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.util.Log;
+import android.view.LayoutInflater;
+import android.view.MenuItem;
+import android.view.View;
+import android.view.ViewGroup;
+
+import java.util.ArrayList;
+import java.util.Objects;
+import java.util.Set;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link bluetooth_setupFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class bluetooth_setupFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public bluetooth_setupFragment() {
+        // Required empty public constructor
+    }
+
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment bluetooth_setupFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static bluetooth_setupFragment newInstance(String param1, String param2) {
+        bluetooth_setupFragment fragment = new bluetooth_setupFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.fragment_bluetooth_setup, container, false);
+
+        // init
+        BluetoothManager bluetoothManager = requireActivity().getSystemService(BluetoothManager.class);
+        BluetoothAdapter bluetoothAdapter = bluetoothManager.getAdapter();
+
+        if (bluetoothAdapter == null) {
+            // Device doesn't support Bluetooth
+        }
+
+
+        if (ActivityCompat.checkSelfPermission(requireActivity().getApplicationContext(), android.Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+            return view;
+        }
+        Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
+
+        RecyclerView recyclerView = view.findViewById(R.id.recyclerView1);
+        //RecyclerViewのサイズを固定
+        recyclerView.setHasFixedSize(true);
+
+        //RecyclerViewに区切り線を入れる
+//        RecyclerView.ItemDecoration itemDecoration =
+//                new DividerItemDecoration(getContext() ,DividerItemDecoration.VERTICAL);
+//        recyclerView.addItemDecoration(itemDecoration);
+
+        //レイアウトマネージャを設
+        RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext());
+        recyclerView.setLayoutManager(layoutManager);
+
+        //①リスト構造(String型の可変長の配列)を宣言
+        ArrayList<String[]> arrayList = new ArrayList<>();
+
+        if (pairedDevices.size() > 0) {
+
+            // There are paired devices. Get the name and address of each paired device.
+            for (BluetoothDevice device : pairedDevices) {
+
+
+
+                String[] deviceInfo = new String[2];
+                deviceInfo[0] = device.getName();
+                deviceInfo[1] = device.getAddress(); // MAC address
+
+                Log.d("a", deviceInfo[0]);
+                arrayList.add(deviceInfo);
+            }
+            for (String[] s : arrayList) {
+                Log.d("b", s[0]);
+            }
+            Log.d(" ", String.valueOf(arrayList.size()));
+            RecyclerAdapter adapter = new RecyclerAdapter(arrayList);
+
+            //④RecyclerViewとAdapterの結び付け
+            recyclerView.setAdapter(adapter);
+        }
+
+        return view;
+
+    }
+
+}

app/src/main/res/drawable/frame_style_orange.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#ffa500"/>
+    <corners android:radius="25dp"/>
+
+</shape>

app/src/main/res/layout/activity_main.xml

@@ -3,6 +3,7 @@
 <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:id="@+id/activityMain"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
@@ -15,7 +16,7 @@
         android:name="com.example.childguard.HomeFragment"
         android:layout_width="0dp"
         android:layout_height="0dp"
-        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/nav_view"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintTop_toTopOf="parent" />

app/src/main/res/layout/first_start.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/frameLayout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".First_Start"
+    >
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="一覧から車のBluetoothを選択してください"
+
+        />
+
+</LinearLayout>

app/src/main/res/layout/fragment_bluetooth_setup.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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:id="@+id/Bluetooth_setup"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".bluetooth_setupFragment">
+
+
+    <!-- TODO: Update blank fragment layout -->
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView1"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:scrollbars="vertical"/>
+
+    <TextView
+        android:id="@+id/click_device"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+
+        />
+
+</LinearLayout>

app/src/main/res/layout/fragment_home.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<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:id="@+id/frameLayout"
@@ -8,88 +8,127 @@
     android:orientation="vertical"
     tools:context=".HomeFragment">
 
-    <FrameLayout
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:background="@drawable/frame_style"
-        android:layout_marginTop="30dp"
-        android:layout_marginLeft="20dp"
-        android:layout_marginRight="20dp"
-        >
 
-        <TextView
+    <ScrollView
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_marginTop="20dp"
+            android:orientation="vertical" >
-            android:text="現在の状態"
+            <FrameLayout
-            android:textSize="25dp"
+                android:id="@+id/situation_bg"
-            android:textColor="@color/black"
+                android:layout_width="match_parent"
-            android:textAlignment="center"/>
+                android:layout_height="wrap_content"
-        <TextView
+                android:layout_marginLeft="20dp"
-            android:layout_width="match_parent"
+                android:layout_marginTop="30dp"
-            android:layout_height="200dp"
+                android:layout_marginRight="20dp"
-            android:layout_marginTop="10dp"
+                android:background="@drawable/frame_style">
-            android:text="\n降車状態"
-            android:textSize="55dp"
-            android:textColor="@color/black"
-            android:textAlignment="center"
-            />
 
-    </FrameLayout>
+                <TextView
-    <FrameLayout
+                    android:layout_width="match_parent"
-        android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
-        android:layout_height="wrap_content"
+                    android:layout_marginTop="20dp"
-        android:background="@drawable/frame_style"
+                    android:text="現在の状態"
-        android:layout_marginTop="30dp"
+                    android:textAlignment="center"
-        android:layout_marginLeft="20dp"
+                    android:textColor="@color/black"
-        android:layout_marginRight="20dp"
+                    android:textSize="25dp" />
-        >
 
-        <TextView
+                <TextView
-            android:layout_width="match_parent"
+                    android:id="@+id/situation"
-            android:layout_height="wrap_content"
+                    android:layout_width="match_parent"
-            android:layout_marginTop="20dp"
+                    android:layout_height="200dp"
-            android:text="切断中"
+                    android:layout_marginTop="10dp"
-            android:textSize="25dp"
+                    android:text="\n降車状態"
-            android:textColor="@color/black"
+                    android:textAlignment="center"
-            android:textAlignment="center"/>
+                    android:textColor="@color/black"
-        <ImageView
+                    android:textSize="55dp" />
-            android:layout_width="match_parent"
-            android:layout_height="100dp"
-            android:layout_marginTop="50dp"
-            android:src="@drawable/bluetooth_drive_fill0_wght400_grad0_opsz24"
-            android:textAlignment="center"
-            />
-        <ImageView
-            android:layout_width="match_parent"
-            android:layout_height="100dp"
-            android:layout_marginTop="50dp"
-            android:src="@drawable/close_fill0_wght400_grad0_opsz24"
-            android:textAlignment="center"
-            />
 
-    </FrameLayout>
+            </FrameLayout>
 
-    <FrameLayout
+            <FrameLayout
-        android:layout_width="match_parent"
+                android:layout_width="match_parent"
-        android:layout_height="match_parent"
+                android:layout_height="wrap_content"
-        android:layout_marginLeft="20dp"
+                android:layout_marginLeft="20dp"
-        android:layout_marginRight="20dp"
+                android:layout_marginTop="30dp"
-        android:background="@drawable/frame_style_button">
+                android:layout_marginRight="20dp"
+                android:background="@drawable/frame_style">
+
+                <TextView
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="5dp"
+                    android:text="切断中"
+                    android:textAlignment="center"
+                    android:textColor="@color/black"
+                    android:textSize="30dp" />
+
+                <ImageView
+                    android:layout_width="match_parent"
+                    android:layout_height="100dp"
+                    android:layout_marginTop="50dp"
+                    android:src="@drawable/bluetooth_drive_fill0_wght400_grad0_opsz24"
+                    android:textAlignment="center" />
+
+                <ImageView
+                    android:layout_width="match_parent"
+                    android:layout_height="100dp"
+                    android:layout_marginTop="50dp"
+                    android:src="@drawable/close_fill0_wght400_grad0_opsz24"
+                    android:textAlignment="center" />
+
+            </FrameLayout>
+
+            <Button
+                android:id="@+id/QRprinting"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="70dp"
+                android:backgroundTint="#778899"
+                android:text="QRコード印刷"
+                android:textColor="@color/white"
+                android:textSize="40dp" />
+
+            <Button
+                android:id="@+id/Bluetooth_setup"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:backgroundTint="#778899"
+                android:text="Bluetooth設定"
+                android:textColor="@color/white"
+                android:textSize="40dp" />
+
+            <FrameLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="20dp"
+                android:layout_marginRight="20dp"
+                android:background="@drawable/frame_style_button">
+
+
+            </FrameLayout>
+
+            <FrameLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+
+                android:layout_marginLeft="20dp"
+                android:layout_marginRight="20dp"
+                android:background="@drawable/frame_style_button">
+
+
+                <!--<ImageView
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:src="@drawable/ss"/>-->
+                <!--android:layout_gravity="center"-->
+            </FrameLayout>
+        </LinearLayout>
+    </ScrollView>
+</androidx.constraintlayout.widget.ConstraintLayout>
 
-        <Button
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:layout_marginLeft="20dp"
-            android:layout_marginRight="20dp"
-            android:backgroundTint="#778899"
-            android:text="QRコード印刷"
-            android:textColor="@color/white"
-            android:textSize="40dp" />
-        <!--<ImageView
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:src="@drawable/ss"/>-->
-    </FrameLayout>
-</LinearLayout>

app/src/main/res/layout/fragment_qr.xml

@@ -5,10 +5,6 @@
     android:layout_height="match_parent"
     tools:context=".QRFragment">
 
-    <!-- TODO: Update blank fragment layout -->
+
-    <TextView
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:text="@string/hello_blank_fragment" />
 
 </FrameLayout>

app/src/main/res/layout/fragment_qr_print.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout 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"
+    android:orientation="vertical"
+    tools:context=".QrPrintFragment"
+    android:weightSum="1">
+
+
+    <!-- TODO: Update blank fragment layout -->
+    <ImageView
+        android:id="@+id/image"
+        android:layout_width="match_parent"
+        android:layout_height="581dp"
+        android:layout_weight="1"/>
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:srcCompat="@drawable/a_group_qr_sos"
+        android:layout_weight="0"/>
+
+    <ImageView
+        android:id="@+id/qr_view"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        app:srcCompat="@drawable/ic_launcher_foreground"
+        android:layout_weight="0"/>
+
+</LinearLayout>

app/src/main/res/layout/recycler_row.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+    <TextView
+        android:id="@+id/textView1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="30sp"/>
+
+</LinearLayout>

app/src/main/res/values/colors.xml

@@ -2,4 +2,5 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="orange">#FF4500</color>
 </resources>

app/src/main/res/values/strings.xml

@@ -2,4 +2,5 @@
     <string name="app_name">Child Guard</string>
     <!-- TODO: Remove or change this placeholder text -->
     <string name="hello_blank_fragment">Hello blank fragment</string>
+    <string name="title_activity_first_start">First_Start</string>
 </resources>

build.gradle

@@ -1,5 +1,10 @@
-// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    dependencies {
+        classpath 'com.google.gms:google-services:4.3.14'
+    }
+}// Top-level build file where you can add configuration options common to all sub-projects/modules.
 plugins {
     id 'com.android.application' version '8.0.2' apply false
     id 'com.android.library' version '8.0.2' apply false
+    id 'org.jetbrains.kotlin.android' version '1.7.20' apply false
 }