fb361f0f4c
Mirrors lojack-connect. .NET for Android runs no DEX shrinker by default, and even with AndroidLinkTool=r8 the ProGuard config the SDK generates hardcodes -dontobfuscate -- a flag nothing later in the config list can undo -- so Play Console's "DEX code optimization" report scores obfuscation at ~1%. _AndroidObfuscateDex drops the SDK's proguard_xamarin.cfg from R8's --pg-conf list and substitutes a copy without that line, regenerating the -printmapping/-keepattributes tail the SDK would have appended (absolute path: R8 resolves a relative -printmapping against the config file's own directory). 49.8% of DEX classes are now renamed. proguard.cfg carries the keeps the generated rules miss: classes the .NET runtime resolves by name from native code (net.dot.android.**), and public and protected fields, which the trimmer covers for methods only. The target also caches aapt2's keep rules outside FileWrites -- the SDK adds them to @(ProguardConfiguration) inside _CreateBaseApkWithAapt2 and registers the file as a FileWrite, so an incremental Release build that skips the resource link loses them and ships an APK that dies inflating FitWindowsFrameLayout. Verified on a Pixel 9 emulator (API 36) with the obfuscated Release APK: launch, connection list, Add Connection form, and a Bolt connection attempt that exercises the network/TLS stack and surfaces the driver's error dialog. The AAB carries mapping.txt, so Play retraces Java stacks itself. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
3.6 KiB
PocketGraph
A Neo4j and Memgraph client for iPhone and iPad, built with .NET MAUI.
Features
- Connect via the Bolt protocol with SSL/TLS support
- Compatible with Neo4j and Memgraph
- Interactive graph visualization with expand/collapse
- Table view for query results
- Save and manage connections and queries
- Light and dark theme
- iPhone and iPad support (iOS 14.2+)
Project Structure
Xamarin.Neo4j/
├── Xamarin.Neo4j/ # Shared .NET MAUI project
├── Xamarin.Neo4j.iOS/ # iOS platform project
├── Xamarin.Neo4j.Tests/ # Unit tests
└── Xamarin.Neo4j.IntegrationTests/ # Integration tests (Neo4j + Memgraph via Docker)
Development
Prerequisites
- .NET 10 SDK
- Xcode (for iOS builds)
- Docker (for integration tests)
Building
cd Xamarin.Neo4j
dotnet build Xamarin.Neo4j.sln
Running Tests
# Unit tests
dotnet test Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.Tests/
# Integration tests (requires Docker)
dotnet test Xamarin.Neo4j/Xamarin.Neo4j/Xamarin.Neo4j.IntegrationTests/
Android DEX shrinking & obfuscation (R8)
Release builds of the Android head run R8 over the Java/DEX side
(AndroidLinkTool=r8 in Xamarin.Neo4j.Android.csproj). Play Console's DEX code
optimization report scores obfuscation at ~1% on a stock .NET MAUI build: .NET for
Android runs no DEX shrinker by default, and even with R8 on, the ProGuard config the
SDK generates hardcodes -dontobfuscate — a flag nothing later in the config list can
undo. The _AndroidObfuscateDex target therefore drops that file from R8's --pg-conf
list and substitutes Xamarin.Neo4j.Android/proguard_xamarin.cfg (the same file minus
that line), plus a generated file carrying the -printmapping/-keepattributes tail
the SDK would have appended. Measured on the Release APK: 49.8% of DEX classes
renamed, up from ~0%.
Only library-internal classes are renamed: the trimmer emits a -keep rule for every
Java type the managed bindings reference, aapt2 one for every class named in a layout
or the manifest, and each Android Callable Wrapper gets its own.
Xamarin.Neo4j.Android/proguard.cfg covers what those miss — things resolved by name
from native code. Add to it if a Release build dies with ClassNotFoundException,
NoSuchFieldError or NoSuchMethodError where a Debug build does not.
mapping.txt is embedded in the AAB
(BUNDLE-METADATA/com.android.tools.build.obfuscation/proguard.map), so Play Console
retraces obfuscated Java stacks by itself. Managed (C#) stack traces are unaffected —
R8 only touches DEX.
Local Release builds must be clean: aapt2's keep rules are registered as a FileWrite,
so an incremental build that skips the resource link has IncrementalClean delete them.
The target caches a copy outside FileWrites and errors out if even that is missing —
delete Xamarin.Neo4j.Android/obj/Release if it fires.
Technology Stack
- .NET MAUI
- Neo4j.Driver (Bolt protocol)
- C# / XAML
- MVVM architecture
- Testcontainers for integration testing
Privacy
PocketGraph does not collect any user data. All connections and queries are stored locally on your device.
About
PocketGraph is a product of Re: Software B.V..
Neo4j and Cypher are registered trademarks of Neo4j, Inc.
License
See LICENSE for details.
Support
Contact: support@resoftware.nl