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

@@ -104,6 +104,7 @@ public class HomeFragment extends Fragment {
             }
         });
 
+        //デバック用ボタン
         view.findViewById(R.id.bt_debug).setOnClickListener( v -> {
             Toast.makeText(getContext(), PreferenceManager.getDefaultSharedPreferences(getContext().getApplicationContext()).getString("bluetooth_device1", "none"), Toast.LENGTH_SHORT).show();
         });

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

@@ -80,7 +80,8 @@ public class QRFragment extends Fragment {
                     //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 {
+                }
+                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

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

@@ -1,6 +1,8 @@
 package com.example.childguard;
 
+import android.bluetooth.BluetoothAdapter;
 import android.content.Context;
+import android.content.SharedPreferences;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -10,22 +12,26 @@ import android.widget.TextView;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.appcompat.app.AlertDialog;
 import androidx.recyclerview.widget.RecyclerView;
 
 import java.util.ArrayList;
+import java.util.function.Predicate;
 
 public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ItemViewHolder> {
 
     ArrayList<String[]> deviceList;
 
     Context applicationContext;
+    View parentView;
 
     // Constructor
-    public RecyclerAdapter(ArrayList<String[]> deviceList, Context applicationContext) {
+    public RecyclerAdapter(ArrayList<String[]> deviceList, Context applicationContext, View parentView) {
         // Init
         Log.d("RecyclerAdapter", "Constructor called");
         this.deviceList = deviceList;
         this.applicationContext = applicationContext;
+        this.parentView = parentView;
     }
 
     @NonNull
@@ -42,14 +48,24 @@ public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ItemVi
         holder.textView.setOnClickListener( v -> {
 
             // アラートダイアログを表示
-            new androidx.appcompat.app.AlertDialog.Builder(v.getContext())
+            new AlertDialog.Builder(v.getContext())
                     .setTitle("登録")
                     .setMessage("このデバイスを登録しますか？")
                     .setPositiveButton(android.R.string.ok, (dialog, which) -> {
                         // OK button pressed
                         Toast.makeText(v.getContext(), "OK button clicked", Toast.LENGTH_SHORT).show();
-                        Toast.makeText(v.getContext(), deviceList.get(position)[1], Toast.LENGTH_SHORT).show();
+
-                        PreferenceManager.getDefaultSharedPreferences(this.applicationContext).edit().putString("bluetooth_device1", deviceList.get(position)[1]).apply();
+                        //共有プリファレンスに保存
+                        SharedPreferences sharedPreferences=PreferenceManager.getDefaultSharedPreferences(this.applicationContext);
+                        sharedPreferences.edit().putString("bluetooth_device_id", deviceList.get(position)[1]).apply();
+                        sharedPreferences.edit().putString("bluetooth_device_name",deviceList.get(position)[0]).apply();
+                        Toast.makeText(v.getContext(),PreferenceManager.getDefaultSharedPreferences(this.applicationContext).getString("bluetooth_device_id","none"), Toast.LENGTH_SHORT).show();
+
+                        TextView textView = this.parentView.findViewById(R.id.registered_device);
+                        textView.setText(PreferenceManager.getDefaultSharedPreferences(this.applicationContext).getString("bluetooth_device_name","none"));
+
+
+
                     })
                     .setNegativeButton(android.R.string.cancel, null)
                     .show();

app/src/main/java/com/example/childguard/RecyclerAdapter2.java

@@ -0,0 +1,86 @@
+package com.example.childguard;
+
+import android.content.Context;
+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;
+
+//RecyclerView.Adapterクラスを継承
+public class RecyclerAdapter2 extends RecyclerView.Adapter<ItemViewHolder> {
+
+    ArrayList<String> arrayList;
+
+    //RecyclerAdapterのコンストラクタ
+    public RecyclerAdapter2(ArrayList<String> arrayList, Context applicationContext) {
+        this.arrayList = arrayList;
+    }
+
+    //新しいViewHolderを生成すると呼び出される
+    @NonNull
+    @Override
+    public ItemViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+
+        //recycler_row.xmlをactivity_main.xmlの部品にする
+        View view = LayoutInflater.from(parent.getContext())
+                .inflate(R.layout.recycler_row, parent, false);
+
+        //新しいViewHolderを作成
+        //ItemViewHolderクラスを呼び出す
+        ItemViewHolder holder = new ItemViewHolder(view);
+
+        //クリックイベントを登録
+        holder.itemView.setOnClickListener(v -> {
+            //クリックされた行を取得
+            int position = holder.getAdapterPosition();
+
+            //クリックされた文字をトースト表示
+            Toast.makeText(v.getContext(), arrayList.get(position), Toast.LENGTH_SHORT).show();
+
+            //クリックされた行を削除
+            arrayList.remove(position);
+
+            //行が削除されたことを画面に通知
+            notifyItemRemoved(position);
+        });
+
+        //生成したViewHolderを戻す
+        return holder;
+    }
+
+    //1行分のレイアウトの詳細設定
+    @Override
+    public void onBindViewHolder(@NonNull ItemViewHolder holder, int position) {
+        //指定された位置の値を取得
+        holder.getTextView().setText(arrayList.get(position));
+    }
+
+    //ArrayListのデータ件数を取得
+    @Override
+    public int getItemCount() {
+        return arrayList.size();
+    }
+}
+
+//RecyclerView.ViewHolderクラスを継承
+class ItemViewHolder extends RecyclerView.ViewHolder {
+    private final TextView textView;
+
+    //ItemViewHolderのコンストラクタ
+    public ItemViewHolder(View view) {
+        super(view);
+        //ViewHolderのビューにテキストを定義する
+        textView = view.findViewById(R.id.textView1);
+    }
+
+    //テキストの値を取得
+    public TextView getTextView() {
+        return textView;
+    }
+}

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

@@ -1,5 +1,6 @@
 package com.example.childguard;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.bluetooth.BluetoothAdapter;
 import android.bluetooth.BluetoothDevice;
@@ -15,11 +16,13 @@ import androidx.recyclerview.widget.DividerItemDecoration;
 import androidx.recyclerview.widget.LinearLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.ViewGroup;
+import android.widget.TextView;
 
 import java.util.ArrayList;
 import java.util.Objects;
@@ -100,9 +103,9 @@ public class bluetooth_setupFragment extends Fragment {
         }
         Set<BluetoothDevice> pairedDevices = bluetoothAdapter.getBondedDevices();
 
-        RecyclerView recyclerView = view.findViewById(R.id.recyclerView1);
+        RecyclerView recyclerView1 = view.findViewById(R.id.recyclerView1);
         //RecyclerViewのサイズを固定
-        recyclerView.setHasFixedSize(true);
+        recyclerView1.setHasFixedSize(true);
 
         //RecyclerViewに区切り線を入れる
 //        RecyclerView.ItemDecoration itemDecoration =
@@ -111,7 +114,8 @@ public class bluetooth_setupFragment extends Fragment {
 
         //レイアウトマネージャを設
         RecyclerView.LayoutManager layoutManager = new LinearLayoutManager(getContext());
-        recyclerView.setLayoutManager(layoutManager);
+        recyclerView1.setLayoutManager(layoutManager);
+        //recyclerView2.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<>();
@@ -134,10 +138,16 @@ public class bluetooth_setupFragment extends Fragment {
                 Log.d("b", s[0]);
             }
             Log.d(" ", String.valueOf(arrayList.size()));
-            RecyclerAdapter adapter = new RecyclerAdapter(arrayList, requireActivity().getApplicationContext());
+            RecyclerAdapter adapter = new RecyclerAdapter(arrayList, requireActivity().getApplicationContext(), view);
+
 
             //④RecyclerViewとAdapterの結び付け
-            recyclerView.setAdapter(adapter);
+            recyclerView1.setAdapter(adapter);
+            TextView textView=view.findViewById(R.id.registered_device);
+            textView.setText(PreferenceManager.getDefaultSharedPreferences(requireActivity().getApplicationContext()).getString("bluetooth_device_name","none"));
+
+
+
         }
 
         return view;

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

@@ -10,17 +10,28 @@
 
 
     <!-- TODO: Update blank fragment layout -->
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="登録可能デバイス"
+        />
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/recyclerView1"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
+        android:layout_height="wrap_content"
         android:scrollbars="vertical"/>
 
     <TextView
-        android:id="@+id/click_device"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-
+        android:text="登録済みデバイス"
         />
+    <TextView
+        android:id="@+id/registered_device"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:textSize="50dp"/>
+
+
 
 </LinearLayout>