add option to sync database after quick-unlocking the database. closes https://github.com/PhilippC/keepass2android/issues/188

src/Kp2aBusinessLogic/IKp2aApp.cs

@@ -119,7 +119,7 @@ namespace keepass2android
 		/// </summary>
 		IFileStorage GetFileStorage(IOConnectionInfo iocInfo, bool allowCache);
 
-		void TriggerReload(Context context);
+		void TriggerReload(Context context, Action<bool> actionOnResult /*if not null, called when the user selected yes (true) or no (false)*/);
 
 		
 		bool CheckForDuplicateUuids { get; }

src/Kp2aBusinessLogic/database/CheckDatabaseForChanges.cs

@@ -51,7 +51,7 @@ namespace keepass2android
 					
 					if (!MemUtil.ArraysEqual(_app.CurrentDb.KpDatabase.HashOfFileOnDisk, hashingRemoteStream.Hash))
 					{
-						_app.TriggerReload(_context);
+						_app.TriggerReload(_context, null);
 						Finish(true);
 					}
 					else

src/Kp2aBusinessLogic/database/SynchronizeCachedDatabase.cs

@@ -85,8 +85,7 @@ namespace keepass2android
 					{
 						//only the remote file was modified -> reload database.
 						//note: it's best to lock the database and do a complete reload here (also better for UI consistency in case something goes wrong etc.)
-						_app.TriggerReload(_context);
+						_app.TriggerReload(_context, (bool result) => Finish(result));
-						Finish(true);
 					}
 				}
 				else

src/keepass2android/GroupBaseActivity.cs

@@ -28,7 +28,6 @@ using Android.Widget;
 using KeePassLib;
 using Android.Preferences;
 using KeePassLib.Interfaces;
-using KeePassLib.Serialization;
 using KeePassLib.Utility;
 using keepass2android.Io;
 using keepass2android.database.edit;
@@ -42,7 +41,6 @@ using Object = Java.Lang.Object;
 
 namespace keepass2android
 {
-
     public abstract class GroupBaseActivity : LockCloseActivity
     {
         public const String KeyEntry = "entry";
@@ -1062,7 +1060,7 @@ namespace keepass2android
                     return true;
 
                 case Resource.Id.menu_sync:
-                    Synchronize();
+                    new SyncUtil(this).SynchronizeDatabase(() => { });
                     return true;
 
                 case Resource.Id.menu_work_offline:
@@ -1073,7 +1071,7 @@ namespace keepass2android
                 case Resource.Id.menu_work_online:
                     App.Kp2a.OfflineMode = App.Kp2a.OfflineModePreference = false;
                     UpdateOfflineModeMenu();
-                    Synchronize();
+                    new SyncUtil(this).SynchronizeDatabase(() => { });
                     return true;
                 case Resource.Id.menu_open_other_db:
                     AppTask.SetActivityResult(this, KeePass.ExitLoadAnotherDb);
@@ -1096,77 +1094,7 @@ namespace keepass2android
             return base.OnOptionsItemSelected(item);
         }
 
-        public class SyncOtpAuxFile : RunnableOnFinish
-        {
-            private readonly IOConnectionInfo _ioc;
     
-            public SyncOtpAuxFile(Activity activity, IOConnectionInfo ioc)
-                : base(activity,null)
-            {
-                _ioc = ioc;
-            }
-
-            public override void Run()
-            {
-                StatusLogger.UpdateMessage(UiStringKey.SynchronizingOtpAuxFile);
-                try
-                {
-                    //simply open the file. The file storage does a complete sync.
-                    using (App.Kp2a.GetOtpAuxFileStorage(_ioc).OpenFileForRead(_ioc))
-                    {
-                    }
-
-                    Finish(true);
-                }
-                catch (Exception e)
-                {
-
-                    Finish(false, e.Message);
-                }
-
-
-            }
-
-        }
-
-        private void Synchronize()
-        {
-            var filestorage = App.Kp2a.GetFileStorage(App.Kp2a.CurrentDb.Ioc);
-            RunnableOnFinish task;
-            OnFinish onFinish = new ActionOnFinish(this, (success, message, activity) =>
-            {
-                if (!String.IsNullOrEmpty(message))
-                    Toast.MakeText(activity, message, ToastLength.Long).Show();
-
-                // Tell the adapter to refresh it's list
-                BaseAdapter adapter = (BaseAdapter)((GroupBaseActivity)activity)?.ListAdapter;
-                adapter?.NotifyDataSetChanged();
-
-                if (App.Kp2a.CurrentDb.OtpAuxFileIoc != null)
-                {
-                    var task2 = new SyncOtpAuxFile(this, App.Kp2a.CurrentDb.OtpAuxFileIoc);
-                    new ProgressTask(App.Kp2a, activity, task2).Run(true);
-                }
-            });
-
-            if (filestorage is CachingFileStorage)
-            {
-
-                task = new SynchronizeCachedDatabase(this, App.Kp2a, onFinish);
-            }
-            else
-            {
-
-                task = new CheckDatabaseForChanges(this, App.Kp2a, onFinish);
-            }
-
-
-
-
-            var progressTask = new ProgressTask(App.Kp2a, this, task);
-            progressTask.Run();
-
-        }
 
         public override void OnBackPressed()
         {

src/keepass2android/QuickUnlock.cs

@@ -212,10 +212,8 @@ namespace keepass2android
 			pwd.Text = ExpectedPasswordPart;
 			
 			btn.PostDelayed(() =>
-			{
+            {
-			
+				UnlockAndSyncAndClose();
-				App.Kp2a.UnlockDatabase();
-				Finish();
 			}, 500);
 
 
@@ -327,20 +325,36 @@ namespace keepass2android
 		{
 			var expectedPasswordPart = ExpectedPasswordPart;
 			if (pwd.Text == expectedPasswordPart)
-			{
+            {
-				Kp2aLog.Log("QuickUnlock successful!");
+                UnlockAndSyncAndClose();
-				App.Kp2a.UnlockDatabase();
+            }
-			}
 			else
 			{
 				Kp2aLog.Log("QuickUnlock not successful!");
 				App.Kp2a.Lock(false);
 				Toast.MakeText(this, GetString(Resource.String.QuickUnlock_fail), ToastLength.Long).Show();
+                Finish();
 			}
-			Finish();
+			
 		}
 
-		private string ExpectedPasswordPart
+        private void UnlockAndSyncAndClose()
+        {
+            App.Kp2a.UnlockDatabase();
+
+			if (PreferenceManager.GetDefaultSharedPreferences(this)
+									 .GetBoolean(GetString(Resource.String.SyncAfterQuickUnlock_key), false))
+			{
+				new SyncUtil(this).SynchronizeDatabase(Finish);
+			}
+			else
+				Finish();
+
+			
+            
+        }
+
+        private string ExpectedPasswordPart
 		{
 			get
 			{

src/keepass2android/Resources/values/config.xml

@@ -205,6 +205,8 @@
 	<string name="PreloadDatabaseEnabled_key">PreloadDatabaseEnabled</string>
 	<bool name="PreloadDatabaseEnabled_default">true</bool>
 
+  <string name="SyncAfterQuickUnlock_key">SyncAfterQuickUnlock_key</string>
+
 	<string name="ClearPasswordOnLeave_key">ClearPasswordOnLeave</string>
 
 </resources>

src/keepass2android/Resources/values/strings.xml

@@ -473,6 +473,9 @@
 	<string name="PreloadDatabaseEnabled_title">Pre-load database file</string>
 	<string name="PreloadDatabaseEnabled_summary">Start background loading or downloading of the database file during password entry.</string>
 
+  <string name="SyncAfterQuickUnlock_title">Sync after QuickUnlock</string>
+  <string name="SyncAfterQuickUnlock_summary">Synchronize database with remote file after unlocking with QuickUnlock.</string>
+
 	<string name="AskOverwriteBinary">Do you want to overwrite the existing binary with the same name?</string>
   <string name="AskOverwriteBinary_title">Overwrite existing binary?</string>
   <string name="AskOverwriteBinary_yes">Overwrite</string>

src/keepass2android/Resources/xml/preferences.xml

@@ -567,7 +567,15 @@
 					 android:defaultValue="@bool/PreloadDatabaseEnabled_default"
 					 android:title="@string/PreloadDatabaseEnabled_title"
 					 android:key="@string/PreloadDatabaseEnabled_key" />
-			<CheckBoxPreference
+      <CheckBoxPreference
+  android:enabled="true"
+  android:persistent="true"
+  android:summary="@string/SyncAfterQuickUnlock_summary"
+  android:defaultValue="false"
+  android:title="@string/SyncAfterQuickUnlock_title"
+  android:key="@string/SyncAfterQuickUnlock_key" />
+
+      <CheckBoxPreference
   android:key="@string/TanExpiresOnUse_key"
   android:title="@string/TanExpiresOnUse_title"
   android:summary="@string/TanExpiresOnUse_summary"

src/keepass2android/SyncUtil.cs

@@ -0,0 +1,99 @@
+using System;
+using Android.App;
+using Android.Widget;
+using keepass2android.Io;
+using KeePassLib.Serialization;
+
+namespace keepass2android
+{
+    public class SyncUtil
+    {
+        private Activity _activity;
+
+        public SyncUtil(Activity activity)
+        {
+            _activity = activity;
+        }
+
+        public class SyncOtpAuxFile : RunnableOnFinish
+        {
+            private readonly IOConnectionInfo _ioc;
+
+            public SyncOtpAuxFile(Activity activity, IOConnectionInfo ioc)
+                : base(activity, null)
+            {
+                _ioc = ioc;
+            }
+
+            public override void Run()
+            {
+                StatusLogger.UpdateMessage(UiStringKey.SynchronizingOtpAuxFile);
+                try
+                {
+                    //simply open the file. The file storage does a complete sync.
+                    using (App.Kp2a.GetOtpAuxFileStorage(_ioc).OpenFileForRead(_ioc))
+                    {
+                    }
+
+                    Finish(true);
+                }
+                catch (Exception e)
+                {
+
+                    Finish(false, e.Message);
+                }
+
+
+            }
+
+        }
+
+
+        public void SynchronizeDatabase(Action runAfterSuccess)
+        {
+            var filestorage = App.Kp2a.GetFileStorage(App.Kp2a.CurrentDb.Ioc);
+            RunnableOnFinish task;
+            OnFinish onFinish = new ActionOnFinish(_activity, (success, message, activity) =>
+            {
+                if (!String.IsNullOrEmpty(message))
+                    Toast.MakeText(activity, message, ToastLength.Long).Show();
+
+                // Tell the adapter to refresh it's list
+                BaseAdapter adapter = (activity as GroupBaseActivity)?.ListAdapter;
+                adapter?.NotifyDataSetChanged();
+
+                if (App.Kp2a.CurrentDb?.OtpAuxFileIoc != null)
+                {
+                    var task2 = new SyncOtpAuxFile(_activity, App.Kp2a.CurrentDb.OtpAuxFileIoc);
+                    task2.OnFinishToRun = new ActionOnFinish(_activity, (b, s, activeActivity) =>
+                    {
+                        runAfterSuccess();
+                    });
+                    new ProgressTask(App.Kp2a, activity, task2).Run(true);
+                }
+                else
+                {
+                    runAfterSuccess();
+                }
+            });
+
+            if (filestorage is CachingFileStorage)
+            {
+
+                task = new SynchronizeCachedDatabase(_activity, App.Kp2a, onFinish);
+            }
+            else
+            {
+
+                task = new CheckDatabaseForChanges(_activity, App.Kp2a, onFinish);
+            }
+
+
+
+
+            var progressTask = new ProgressTask(App.Kp2a, _activity, task);
+            progressTask.Run();
+
+        }
+    }
+}

src/keepass2android/app/App.cs

@@ -460,14 +460,14 @@ namespace keepass2android
                 }
                 else
                 {
-                    AskForReload(activity);
+                    AskForReload(activity, null);
                 }
                 
             }
         }
 
 	    
-	    private void AskForReload(Activity activity)
+	    private void AskForReload(Activity activity, Action<bool> actionOnResult)
 		{
 			AlertDialog.Builder builder = new AlertDialog.Builder(activity);
 			builder.SetTitle(activity.GetString(Resource.String.AskReloadFile_title));
@@ -480,16 +480,27 @@ namespace keepass2android
 				    CurrentDb.ReloadRequested = true;
 					activity.SetResult(KeePass.ExitReloadDb);
 					activity.Finish();
+					if (actionOnResult != null)
+						actionOnResult(true);
 
 				});
 
 			builder.SetNegativeButton(activity.GetString(Android.Resource.String.No), (dlgSender, dlgEvt) =>
 			{
-
+				if (actionOnResult != null)
+					actionOnResult(false);
 			});
 			
 
+
 			Dialog dialog = builder.Create();
+
+			dialog.SetOnDismissListener(new Util.DismissListener(() =>
+			{
+				if (actionOnResult != null)
+					actionOnResult(false);
+			}));
+
 			dialog.Show();
 		}
 
@@ -733,12 +744,12 @@ namespace keepass2android
 			}
 		}
 
-		public void TriggerReload(Context ctx)
+		public void TriggerReload(Context ctx, Action<bool> actionOnResult)
 		{
 			Handler handler = new Handler(Looper.MainLooper);
 			handler.Post(() =>
 				{
-					AskForReload((Activity) ctx);
+					AskForReload((Activity) ctx, actionOnResult);
 				});
 		}
 

src/keepass2android/keepass2android-app.csproj

@@ -207,6 +207,7 @@
     <Compile Include="settings\ExportKeyfileActivity.cs" />
     <Compile Include="settings\IconSetPreference.cs" />
     <Compile Include="SwitchImeActivity.cs" />
+    <Compile Include="SyncUtil.cs" />
     <Compile Include="timeout\TimeoutHelper.cs" />
     <Compile Include="GroupActivity.cs" />
     <Compile Include="GroupBaseActivity.cs" />