Bluetoothデバイスを登録済みか判定する機能を追加

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

@@ -2,9 +2,16 @@ package com.example.childguard;
 
 import static android.content.ContentValues.TAG;
 
+import android.bluetooth.BluetoothDevice;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
 import android.content.SharedPreferences;
+import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
 import android.os.Bundle;
+
+import androidx.core.app.ActivityCompat;
 import androidx.core.content.res.ResourcesCompat;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
@@ -37,6 +44,7 @@ import com.google.firebase.firestore.FirebaseFirestore;
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.Objects;
 
 /**
  * A simple {@link Fragment} subclass.
@@ -172,11 +180,13 @@ 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();
+            Toast.makeText(getContext(), PreferenceManager.getDefaultSharedPreferences(getContext().getApplicationContext()).getString("bluetooth_device_id", "none"), Toast.LENGTH_SHORT).show();
         });
+
+
+
         return view;
     }
-
     @Override
     public void onResume() {
         super.onResume();
@@ -212,4 +222,16 @@ public class HomeFragment extends Fragment {
         // フラグメントトランザクションをコミット
         transaction.commit();
     }
-}
+
+    public void bluetooth_judge(String device_id){
+        if(device_id.equals(PreferenceManager.getDefaultSharedPreferences(requireContext().getApplicationContext()).getString("Bluetooth_device_id","none"))){
+            Log.d(" ","登録デバイスです");
+        }
+        else {
+            Log.d(" ","登録デバイスではないです");
+        }
+    }
+
+
+}
+

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

@@ -10,8 +10,12 @@ import android.annotation.SuppressLint;
 import android.app.NotificationChannel;
 import android.app.NotificationManager;
 import android.bluetooth.BluetoothAdapter;
+import android.bluetooth.BluetoothDevice;
 import android.bluetooth.BluetoothManager;
+import android.content.BroadcastReceiver;
 import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.Vibrator;
@@ -24,10 +28,16 @@ import java.util.Date;
 import java.util.Random;
 import java.util.UUID;
 
+import android.preference.PreferenceManager;
 import android.util.Log;
+import android.widget.TextView;
 import android.widget.Toast;
 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.graphics.Insets;
+import androidx.core.view.ViewCompat;
+import androidx.core.view.WindowInsetsCompat;
+
 import com.google.firebase.firestore.DocumentReference;
 import com.google.firebase.firestore.DocumentSnapshot;
 import com.google.firebase.firestore.EventListener;
@@ -111,8 +121,60 @@ public class MainActivity extends AppCompatActivity {
                 flg = true;
             }
         });
+
+        //Bluetooth検知機能
+        IntentFilter intentFilter = new IntentFilter();
+        intentFilter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED);
+        intentFilter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED);
+
+        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
+            Log.d("BT", "No permission to connect bluetooth devices");
+            return;
+        }
+        else {
+            Log.d("BT", "Permission to connect bluetooth devices granted");
+        }
+        registerReceiver(receiver, intentFilter);
+
     }
 
+
+    //Bluetoothの検知機能
+    private final BroadcastReceiver receiver = new BroadcastReceiver() {
+
+        @Override
+        public void onReceive(Context context, Intent intent) {
+            String action = intent.getAction(); // may need to chain this to a recognizing function
+            BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
+            HomeFragment homeFragment=new HomeFragment();
+
+            if (ActivityCompat.checkSelfPermission(context, android.Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
+                Log.d("BT", "No permission to connect bluetooth devices");
+                return;
+            }
+            String deviceName = device.getName();
+            String deviceHardwareAddress = device.getAddress(); // MAC address
+
+            if (BluetoothDevice.ACTION_ACL_CONNECTED.equals(action)) {
+                //Do something if connected
+                Log.d("BT", "Device connected");
+
+                String registeredId = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()).getString("bluetooth_device_id", "none");
+
+                Log.d("BT_Judge", "Registered: " + registeredId);
+
+                if (deviceHardwareAddress.equals(registeredId)) {
+                    Log.d("BT_Judge", "登録済み");
+                } else Log.d("BT_Judge", "未登録");
+
+            } else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
+                //Do something if disconnected
+                Log.d("BT", "Device disconnected");
+
+            }
+        }
+    };
+
     //↓通知のやつ
     public void notifyMain() {
         //↓通知をする際に起動するバイブレーション

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

@@ -54,7 +54,6 @@ public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerAdapter.ItemVi
                     .setPositiveButton(android.R.string.ok, (dialog, which) -> {
                         // OK button pressed
                         Toast.makeText(v.getContext(), "OK button clicked", Toast.LENGTH_SHORT).show();
-
                         //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();

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

@@ -6,6 +6,7 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
+    android:background="@color/white"
     tools:context=".bluetooth_setupFragment">
 
 
@@ -13,8 +14,17 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="登録可能デバイス"
+        android:text="デバイス"
+        android:textSize="35dp"
+        android:textColor="@color/black"
+        android:layout_marginTop="20dp"
         />
+    <View
+        android:id="@+id/divider1"
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="@color/black" />
+
     <androidx.recyclerview.widget.RecyclerView
         android:id="@+id/recyclerView1"
         android:layout_width="match_parent"
@@ -24,13 +34,24 @@
     <TextView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:text="登録済みデバイス"
+        android:text="登録デバイス"
+        android:textSize="35dp"
+        android:textColor="@color/black"
+        android:layout_marginTop="20dp"
+        />
+    <View
+        android:id="@+id/divider2"
+        android:layout_width="match_parent"
+        android:layout_height="1dp"
+        android:background="@color/black"
         />
     <TextView
         android:id="@+id/registered_device"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="60dp"
-        android:textSize="50dp"/>
+        android:textSize="30sp"
+        android:textColor="@color/black"
+        />
 
 
 

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

@@ -6,6 +6,7 @@
         android:id="@+id/textView1"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:textSize="30sp"/>
+        android:textSize="30sp"
+        android:textColor="@color/black"/>
 
 </LinearLayout>