QuickUnlock icon can be hidden in settings

src/keepass2android/Resources/values/config.xml

@@ -55,8 +55,6 @@
     <bool name="ShowUsernameInList_default">true</bool>
 
 	<bool name="RememberRecentFiles_default">true</bool>
-
-	
 	
 	
 	<string name="password_access_prefs_key">password_access_prefs_key</string>
@@ -68,6 +66,7 @@
 	<string name="QuickUnlockDefaultEnabled_key">Enable_QuickUnlock_by_default</string>
 	<string name="QuickUnlockLength_key">QuickUnlockLength</string>
 	<string name="QuickUnlockLength_default">3</string>
+	<string name="QuickUnlockIconHidden_key">QuickUnlockIconHidden_key</string>
 	
 	<string name="UsageCount_key">UsageCount</string>
 	<string name="LastInfoVersionCode_key">LastInfoVersion</string>

src/keepass2android/Resources/values/strings.xml

@@ -212,6 +212,8 @@
   <string name="QuickUnlock_lockButton">Close database</string>
   <string name="QuickUnlockDefaultEnabled_title">Enable QuickUnlock by default</string>
   <string name="QuickUnlockDefaultEnabled_summary">Defines whether QuickUnlock is enabled by default or not.</string>
+	<string name="QuickUnlockIconHidden_title">Hide QuickUnlock icon</string>
+	<string name="QuickUnlockIconHidden_summary">QuickUnlock unfortunately does not work without displaying a notification icon. Select this option to use a transparent icon.</string>
   <string name="QuickUnlockLength_title">Length of QuickUnlock key</string>
   <string name="QuickUnlockLength_summary">Maximum number of characters used as QuickUnlock password.</string>
   <string name="QuickUnlock_fail">QuickUnlock failed: incorrect password!</string>

src/keepass2android/Resources/xml/preferences.xml

@@ -163,6 +163,13 @@
 				 android:defaultValue="3"
 				 android:title="@string/QuickUnlockLength_title"
 				 android:key="@string/QuickUnlockLength_key" />
+			<CheckBoxPreference
+			android:enabled="true"
+				 android:persistent="true"
+				 android:summary="@string/QuickUnlockIconHidden_summary"
+				 android:defaultValue="false"
+				 android:title="@string/QuickUnlockIconHidden_title"
+				 android:key="@string/QuickUnlockIconHidden_key" />
 		</PreferenceScreen>
 		<PreferenceScreen
 	  android:key="@string/FileHandling_prefs_key"

src/keepass2android/app/App.cs

@@ -116,7 +116,7 @@ namespace keepass2android
 			UpdateOngoingNotification();
 		}
 
-		private void UpdateOngoingNotification()
+		public void UpdateOngoingNotification()
 		{
 			// Start or update the notification icon service to reflect the current state
 			var ctx = Application.Context;

src/keepass2android/keepass2android.csproj

@@ -744,4 +744,7 @@
   <ItemGroup>
     <AndroidResource Include="Resources\drawable-xhdpi-v11\ic_launcher_gray.png" />
   </ItemGroup>
+  <ItemGroup>
+    <AndroidResource Include="Resources\drawable\transparent.png" />
+  </ItemGroup>
 </Project>

src/keepass2android/services/OngoingNotificationsService.cs

@@ -124,9 +124,14 @@ namespace keepass2android
 
 		private Notification GetQuickUnlockNotification()
 		{
+			int grayIconResouceId = Resource.Drawable.ic_launcher_gray;
+			if (PreferenceManager.GetDefaultSharedPreferences(this).GetBoolean(GetString(Resource.String.QuickUnlockIconHidden_key), false))
+			{
+				grayIconResouceId = Resource.Drawable.transparent;
+			}
 			NotificationCompat.Builder builder = 
 				new NotificationCompat.Builder(this)
-					.SetSmallIcon(Resource.Drawable.ic_launcher_gray)
+					.SetSmallIcon(grayIconResouceId)
 					.SetLargeIcon(BitmapFactory.DecodeResource(Resources, AppNames.LauncherIcon))
 					.SetContentTitle(GetString(Resource.String.app_name))
 					.SetContentText(GetString(Resource.String.database_loaded_quickunlock_enabled, GetDatabaseName()));

src/keepass2android/settings/AppSettingsActivity.cs

@@ -58,11 +58,16 @@ namespace keepass2android
 				Kp2aLog.Log(ex.ToString());	
 			}
 #endif
-
+			FindPreference(GetString(Resource.String.QuickUnlockIconHidden_key)).PreferenceChange += OnQuickUnlockHiddenChanged;
 
 			FindPreference(GetString(Resource.String.db_key)).Enabled = false;
 		}
 
+		private void OnQuickUnlockHiddenChanged(object sender, Preference.PreferenceChangeEventArgs e)
+		{
+			App.Kp2a.UpdateOngoingNotification();
+		}
+
 		private void OnUseOfflineCacheChanged(object sender, Preference.PreferenceChangeEventArgs e)
 		{
 			//ensure the user gets a matching database