Feature/credential provider service

.gitignore

@@ -178,3 +178,4 @@ src/java/Keepass2AndroidPluginSDK2/build/generated/mockable-Google-Inc.-Google-A
 /src/MegaTest
 *.dtbcache.json
 /src/keepass2android-app/AndroidManifest.xml
+*.DS_Store

.vscode/launch.json

@@ -0,0 +1,14 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "C#: keepass2android-app Debug",
+            "type": "dotnet",
+            "request": "launch",
+            "projectPath": "${workspaceFolder}/src/keepass2android-app/keepass2android-app.csproj"
+        }
+    ]
+}

src/Kp2aBusinessLogic/IKp2aApp.cs

@@ -167,5 +167,11 @@ int WebDavChunkedUploadSize
     /// Registers an action that should be executed when the context instance with the given id has been resumed.
     /// </summary>
     void RegisterPendingActionForContextInstance(int contextInstanceId, ActionOnOperationFinished actionToPerformWhenContextIsResumed);
+
+    /// <summary>
+    /// Use an App level (singletone) AtomicInteger 
+    /// for the request code of pending intent in the credential provider service.
+    /// </summary>
+    int RequestCodeForCredentialProvider { get; }
   }
 }

src/Kp2aBusinessLogic/database/edit/CreateDB.cs

@@ -28,6 +28,7 @@ namespace keepass2android
 
   public class CreateDb : OperationWithFinishHandler
   {
+    public const string DefaultDbName = "Keepass2Android Password Database";
     private readonly IOConnectionInfo _ioc;
     private readonly bool _dontSave;
     private readonly IKp2aApp _app;
@@ -68,7 +69,7 @@ public override void Run()
       db.KpDatabase.New(_ioc, _key, _app.GetFileStorage(_ioc).GetFilenameWithoutPathAndExt(_ioc));
 
       db.KpDatabase.KdfParameters = (new AesKdf()).GetDefaultParameters();
-      db.KpDatabase.Name = "Keepass2Android Password Database";
+      db.KpDatabase.Name = DefaultDbName;
       //re-set the name of the root group because the PwDatabase uses UrlUtil which is not appropriate for all file storages:
       db.KpDatabase.RootGroup.Name = _app.GetFileStorage(_ioc).GetFilenameWithoutPathAndExt(_ioc);
 

src/keepass2android-app/Resources/values/strings.xml

@@ -1350,5 +1350,10 @@
 
   <string name="pref_periodic_background_sync_interval_title">Periodic background synchronization time interval</string>
   <string name="pref_periodic_background_sync_interval_summary">Set the interval for background synchronization in minutes.</string>
+
+  <string name="credential_provider_service_subtitle">Password credential provider</string>
+  <string name="credential_provider_password_creation_description">Save Password in new entry</string>
+  <string name="open_app_name">Open %1$s</string>
+  <string name="manage_credentials">Manage Credentials</string>
 
 </resources>

src/keepass2android-app/Resources/xml/credentials_provider.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+
+
+ This file is part of Keepass2Android, Copyright 2013 Philipp Crocoll. This file is based on
+Keepassdroid, Copyright Brian Pellin.
+
+  Keepass2Android is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 2 of the License, or
+  (at your option) any later version.
+
+  Keepass2Android is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with Keepass2Android.  If not, see <http://www.gnu.org/licenses/>.
+-->
+<!--TODO
+set android:settingsActivity to AppSettingsActivity-->
+<credential-provider xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:settingsSubtitle="@string/credential_provider_service_subtitle"
+    tools:targetApi="34">
+    <capabilities>
+        <capability name="android.credentials.TYPE_PASSWORD_CREDENTIAL" />
+    </capabilities>
+</credential-provider>

src/keepass2android-app/app/App.cs

@@ -66,6 +66,7 @@ You should have received a copy of the GNU General Public License
 using Java.Interop;
 using AndroidX.Lifecycle;
 using keepass2android.services;
+using Java.Util.Concurrent.Atomic;
 
 
 namespace keepass2android
@@ -1628,6 +1629,13 @@ public void PerformPendingActions(int instanceId)
         }
       }
     }
+
+    private readonly AtomicInteger requestCodeForCredentialProvider = new();
+    public int RequestCodeForCredentialProvider
+    {
+      get => requestCodeForCredentialProvider.IncrementAndGet();
+    }
+
   }
 
 

src/keepass2android-app/keepass2android-app.csproj

@@ -745,6 +745,7 @@
     <PackageReference Include="Xamarin.AndroidX.AutoFill" Version="1.1.0.30" />
     <PackageReference Include="Xamarin.AndroidX.Biometric" Version="1.1.0.27" />
     <PackageReference Include="Xamarin.AndroidX.CoordinatorLayout" Version="1.3.0" />
+    <PackageReference Include="Xamarin.AndroidX.Credentials" Version="1.5.0" />
     <PackageReference Include="Xamarin.AndroidX.CursorAdapter" Version="1.0.0.31" />
     <PackageReference Include="Xamarin.AndroidX.Lifecycle.Common" Version="2.8.7.2" />
     <PackageReference Include="Xamarin.AndroidX.Lifecycle.Runtime" Version="2.8.7.2" />