Add notification to warn user about the unlock state

Clean up code

Add minor changes

app/src/main/AndroidManifest.xml

@@ -48,6 +48,8 @@
         <activity
             android:name=".ui.GroupManagerActivity"
             android:label="Manage groups" />
+
+        <service android:name=".services.NotificationService" />
     </application>
 
 </manifest>

app/src/main/java/com/beemdevelopment/aegis/AegisApplication.java

@@ -1,6 +1,8 @@
 package com.beemdevelopment.aegis;
 
 import android.app.Application;
+import android.app.NotificationChannel;
+import android.app.NotificationManager;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
@@ -11,6 +13,7 @@ import android.graphics.drawable.Icon;
 import android.os.Build;
 
 import com.beemdevelopment.aegis.db.DatabaseManager;
+import com.beemdevelopment.aegis.services.NotificationService;
 import com.beemdevelopment.aegis.ui.MainActivity;
 
 import java.util.ArrayList;
@@ -24,6 +27,9 @@ public class AegisApplication extends Application {
     private Preferences _prefs;
     private List<LockListener> _lockListeners;
 
+    private static final String CODE_LOCK_STATUS_ID = "lock_status_channel";
+    private static final String CODE_LOCK_DATABASE_ACTION = "lock_database";
+
     @Override
     public void onCreate() {
         super.onCreate();
@@ -33,11 +39,18 @@ public class AegisApplication extends Application {
 
         // listen for SCREEN_OFF events
         ScreenOffReceiver receiver = new ScreenOffReceiver();
-        registerReceiver(receiver, new IntentFilter(Intent.ACTION_SCREEN_OFF));
+        IntentFilter intentFilter = new IntentFilter();
+        intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
+        intentFilter.addAction(CODE_LOCK_DATABASE_ACTION);
+        registerReceiver(receiver, intentFilter);
 
         if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1) {
             initAppShortcuts();
         }
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            initNotificationChannels();
+        }
     }
 
     public DatabaseManager getDatabaseManager() {
@@ -65,6 +78,8 @@ public class AegisApplication extends Application {
         for (LockListener listener : _lockListeners) {
             listener.onLocked();
         }
+
+        stopService(new Intent(AegisApplication.this, NotificationService.class));
     }
 
     @RequiresApi(api = Build.VERSION_CODES.N_MR1)
@@ -88,7 +103,21 @@ public class AegisApplication extends Application {
         shortcutManager.setDynamicShortcuts(Collections.singletonList(shortcut));
     }
 
-    private class ScreenOffReceiver extends BroadcastReceiver {
+    private void initNotificationChannels() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            CharSequence name = getString(R.string.channel_name_lock_status);
+            String description = getString(R.string.channel_description_lock_status);
+            int importance = NotificationManager.IMPORTANCE_LOW;
+
+            NotificationChannel channel = new NotificationChannel(CODE_LOCK_STATUS_ID, name, importance);
+            channel.setDescription(description);
+
+            NotificationManager notificationManager = getSystemService(NotificationManager.class);
+            notificationManager.createNotificationChannel(channel);
+        }
+    }
+
+    public class ScreenOffReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(Context context, Intent intent) {
             if (isAutoLockEnabled()) {

app/src/main/java/com/beemdevelopment/aegis/db/DatabaseManager.java

@@ -1,10 +1,12 @@
 package com.beemdevelopment.aegis.db;
 
 import android.content.Context;
+import android.content.Intent;
 import android.os.Environment;
 
 import com.beemdevelopment.aegis.BuildConfig;
 import com.beemdevelopment.aegis.R;
+import com.beemdevelopment.aegis.services.NotificationService;
 
 import org.json.JSONObject;
 
@@ -72,6 +74,7 @@ public class DatabaseManager {
             JSONObject obj = _file.getContent(creds);
             _db = Database.fromJson(obj);
             _creds = creds;
+            _context.startService(new Intent(_context, NotificationService.class));
         } catch (DatabaseFileException | DatabaseException e) {
             throw new DatabaseManagerException(e);
         }

app/src/main/java/com/beemdevelopment/aegis/services/NotificationService.java

@@ -0,0 +1,61 @@
+package com.beemdevelopment.aegis.services;
+
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Intent;
+import android.os.IBinder;
+
+import androidx.annotation.Nullable;
+import androidx.core.app.NotificationCompat;
+import androidx.core.app.NotificationManagerCompat;
+
+import com.beemdevelopment.aegis.AegisApplication;
+import com.beemdevelopment.aegis.R;
+
+public class NotificationService extends Service {
+    public static final int DATABASE_UNLOCKED_ID = 1;
+
+    private static final String CODE_LOCK_STATUS_ID = "lock_status_channel";
+    private static final String CODE_LOCK_DATABASE_ACTION = "lock_database";
+
+    public NotificationService() {
+
+    }
+
+    @Override
+    public int onStartCommand(Intent intent,int flags, int startId){
+        super.onStartCommand(intent, flags, startId);
+
+        serviceMethod();
+        return Service.START_STICKY;
+    }
+
+    public void serviceMethod() {
+        Intent intentAction = new Intent(CODE_LOCK_DATABASE_ACTION);
+        PendingIntent lockDatabaseIntent = PendingIntent.getBroadcast(this,1,intentAction, 0);
+        NotificationCompat.Builder builder = new NotificationCompat.Builder(this,  CODE_LOCK_STATUS_ID)
+                .setSmallIcon(R.drawable.ic_fingerprint_black_24dp)
+                .setContentTitle(getString(R.string.app_name_full))
+                .setContentText(getString(R.string.vault_unlocked_state))
+                .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+                .setOngoing(true)
+                .setContentIntent(lockDatabaseIntent);
+
+        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
+        notificationManager.notify(DATABASE_UNLOCKED_ID, builder.build());
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
+        notificationManager.cancel(DATABASE_UNLOCKED_ID);
+    }
+
+    @Nullable
+    @Override
+    public IBinder onBind(Intent intent) {
+        return null;
+    }
+}

app/src/main/java/com/beemdevelopment/aegis/ui/PreferencesFragment.java

@@ -35,6 +35,7 @@ import com.beemdevelopment.aegis.importers.AegisImporter;
 import com.beemdevelopment.aegis.importers.DatabaseImporter;
 import com.beemdevelopment.aegis.importers.DatabaseImporterEntryException;
 import com.beemdevelopment.aegis.importers.DatabaseImporterException;
+import com.beemdevelopment.aegis.services.NotificationService;
 import com.beemdevelopment.aegis.ui.models.ImportEntry;
 import com.beemdevelopment.aegis.ui.preferences.SwitchPreference;
 import com.takisoft.preferencex.PreferenceFragmentCompat;
@@ -253,6 +254,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
                                         e.printStackTrace();
                                     }
 
+                                    getActivity().stopService(new Intent(getActivity(), NotificationService.class));
                                     updateEncryptionPreferences();
                                 }
                             })
@@ -745,6 +747,7 @@ public class PreferencesFragment extends PreferenceFragmentCompat {
                 return;
             }
 
+            getActivity().startService(new Intent(getActivity(), NotificationService.class));
             updateEncryptionPreferences();
         }
 

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

@@ -1,5 +1,6 @@
 <resources>
     <string name="app_name">Aegis</string>
+    <string name="app_name_full">Aegis Authenticator</string>
     <string name="app_name_dev">AegisDev</string>
     <string name="action_settings">Settings</string>
     <string name="action_import">Import</string>
@@ -166,4 +167,7 @@
     <string name="select_picture">Select picture</string>
     <string name="toggle_checkboxes">Toggle checkboxes</string>
     <string name="search">Search</string>
+    <string name="channel_name_lock_status">Lock status</string>
+    <string name="channel_description_lock_status">Aegis can create a persistent notification to notify you when the vault is locked</string>
+    <string name="vault_unlocked_state">Vault is unlocked. Tap here to lock.</string>
 </resources>