Unity Solana MWA Example

A demo Unity Android app showcasing the Solana.Unity-SDK Mobile Wallet Adapter v2 API. Covers authentication, transaction signing, and wallet lifecycle management.

Prerequisites

• Unity 6 (6000.4+) with Android Build Support (IL2CPP)
• An MWA-compatible wallet installed on the device: Phantom or Solflare
• An Android device or Solana Seeker

Setup

1. Clone this repository
2. Clone the Solana.Unity-SDK
3. Open Packages/manifest.json and update the com.solana.unity_sdk path to point at your local SDK clone:

   "com.solana.unity_sdk": "file:/path/to/your/Solana.Unity-SDK"

4. Open the project in Unity
5. Switch to Android platform in Build Settings (Player Settings: IL2CPP, ARM64)

Scenes

Auth

Authentication lifecycle with all session management methods:

• Login — authorize with wallet (silent reconnect if cached session exists)
• Sign-In With Solana (SIWS) — authorize + sign a proof message in a single wallet interaction
• Reconnect — restore a cached session without opening the wallet
• Disconnect — clear local state (cache + auth token)
• Deauthorize — revoke the session at the wallet level
• Clone Authorization — create a second independent auth token from the current session
• Network Switching — switch between DevNet and MainNet (clears cache on switch)

Operations

Wallet operations (navigate here after connecting in the Auth scene):

• SignTransaction — sign a single transaction
• SignAllTransactions — sign a batch of transactions
• SignMessage — sign an arbitrary message string
• SignAndSendTransactions — sign and broadcast a transaction, with exhaustive result handling
• GetCapabilities — query the wallet's supported features and limits

Project Structure

Assets/Scripts/
  AdapterManager.cs             Singleton managing the SolanaMobileWalletAdapter instance,
                                network switching, and auto-reconnect on app launch
  AuthScreenController.cs       Auth scene UI — buttons for all session methods
  OperationsScreenController.cs Operations scene UI — buttons for signing and capabilities
  DemoAuthorizationCache.cs     Custom IAuthorizationCache using a dedicated PlayerPrefs key
  SceneNavigator.cs             Scene loading utility
  DemoBuild.cs                  Editor-only CLI build helper

Building

From Unity: File > Build Settings > Build (Android selected)

From CLI:

Unity -batchmode -nographics -projectPath . -quit -buildTarget Android -executeMethod DemoBuild.BuildApk

The APK is written to Builds/Demo.apk.

Testing

Build the APK, install on an Android device with Phantom or Solflare, and walk through both scenes. The Auth scene covers the full session lifecycle; the Operations scene covers all signing and query methods.