add Android Studio / gradle version of PluginSDK

src/Kp2aBusinessLogic/Io/IoUtil.cs

@@ -10,6 +10,28 @@ namespace keepass2android.Io
 {
 	public static class IoUtil
 	{
+
+		public static bool TryTakePersistablePermissions(ContentResolver contentResolver, Android.Net.Uri uri)
+		{
+			if ((int)Build.VERSION.SdkInt >= 19)
+			{
+				//try to take persistable permissions
+				try
+				{
+					Kp2aLog.Log("TakePersistableUriPermission");
+					var takeFlags = (ActivityFlags.GrantReadUriPermission
+							| ActivityFlags.GrantWriteUriPermission);
+					contentResolver.TakePersistableUriPermission(uri, takeFlags);
+					return true;
+				}
+				catch (Exception e)
+				{
+					Kp2aLog.Log(e.ToString());
+				}
+
+			}
+			return false;
+		}
 		public static bool DeleteDir(File dir, bool contentsOnly=false)
 		{
 			if (dir != null && dir.IsDirectory)
@@ -102,5 +124,6 @@ namespace keepass2android.Io
 			else
 				return ctx.FilesDir;
 		}
+
 	}
 }

src/Kp2aBusinessLogic/Kp2aBusinessLogic.csproj

@@ -47,13 +47,23 @@
     <WarningLevel>4</WarningLevel>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="ModernHttpClient">
+      <HintPath>..\Components\modernhttpclient-2.4.2\lib\android\ModernHttpClient.dll</HintPath>
+    </Reference>
     <Reference Include="Mono.Android" />
     <Reference Include="Mono.Security" />
     <Reference Include="mscorlib" />
+    <Reference Include="OkHttp">
+      <HintPath>..\Components\modernhttpclient-2.4.2\lib\android\OkHttp.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
+    <Reference Include="System.Net.Http" />
     <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Xml" />
+    <Reference Include="Xamarin.Insights">
+      <HintPath>..\packages\Xamarin.Insights.1.11.3\lib\MonoAndroid10\Xamarin.Insights.dll</HintPath>
+    </Reference>
   </ItemGroup>
   <ItemGroup>
     <Compile Include="database\CheckDatabaseForChanges.cs" />
@@ -123,6 +133,10 @@
     <Compile Include="Utils\Spr\SprEngine.PickChars.cs" />
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\JavaFileStorageBindings\JavaFileStorageBindings.csproj">
+      <Project>{48574278-4779-4b3a-a9e4-9cf1bc285d0b}</Project>
+      <Name>JavaFileStorageBindings</Name>
+    </ProjectReference>
     <ProjectReference Include="..\KeePassLib2Android\KeePassLib2Android.csproj">
       <Project>{545B4A6B-8BBA-4FBE-92FC-4AC060122A54}</Project>
       <Name>KeePassLib2Android</Name>
@@ -131,6 +145,10 @@
       <Project>{70D3844A-D9FA-4A64-B205-A84C6A822196}</Project>
       <Name>KP2AKdbLibraryBinding</Name>
     </ProjectReference>
+    <ProjectReference Include="..\netftpandroid\System.Net.FtpClient\System.Net.FtpClient.Android.csproj">
+      <Project>{146FD497-BA03-4740-B6C5-5C84EA8FCDE2}</Project>
+      <Name>System.Net.FtpClient.Android</Name>
+    </ProjectReference>
     <ProjectReference Include="..\TwofishCipher\TwofishCipher.csproj">
       <Project>{5CF675A5-9BEE-4720-BED9-D5BF14A2EBF9}</Project>
       <Name>TwofishCipher</Name>
@@ -139,6 +157,12 @@
   <ItemGroup>
     <Folder Include="Resources\" />
   </ItemGroup>
+  <ItemGroup>
+    <XamarinComponentReference Include="modernhttpclient">
+      <Visible>False</Visible>
+      <Version>2.4.2</Version>
+    </XamarinComponentReference>
+  </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\Android\Xamarin.Android.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

src/Kp2aBusinessLogic/SelectStorageLocationActivityBase.cs

@@ -122,23 +122,7 @@ namespace keepass2android
 					{
 						if (data.Data.Scheme == "content")
 						{
-							if ((int) Build.VERSION.SdkInt >= 19)
-							{
-								//try to take persistable permissions
-								try
-								{
-									Kp2aLog.Log("TakePersistableUriPermission");
-									var takeFlags = data.Flags
-											& (ActivityFlags.GrantReadUriPermission
-											| ActivityFlags.GrantWriteUriPermission);
-									this.ContentResolver.TakePersistableUriPermission(data.Data, takeFlags);
-								}
-								catch (Exception e)
-								{
-									Kp2aLog.Log(e.ToString());
-								}
-								
-							}
+							IoUtil.TryTakePersistablePermissions(this.ContentResolver, data.Data);
 							
 							IocSelected(IOConnectionInfo.FromPath(data.DataString), requestCode);