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Demo/Reference App

The TrustBloc Demo app demonstrates the wallet-sdk API usage. At a high level, the app uses the following APIs.

  • Create a Decentralized Identifier (DID) API
  • OpenID4CI Issuance APIs
  • OpenID4VP Presentation APIs

The Demo app built using Flutter framework currently supports Android, iOS and Web App targets.

Installation

For help getting started with Flutter development, view the online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

  • Download Flutter : https://docs.flutter.dev/get-started/install/
  • Add export PATH="$PATH:pwd/flutter/bin"
  • Verify that the flutter command is available by running: which flutter
  • After installing the flutter Run flutter doctor. This command checks your environment and displays a report to the terminal window.
    • If everything is installed as required, the sample output will be like this
      [✓] Flutter (Channel stable, 3.10.6, on macOS 13.5 22G74 darwin-arm64, locale
  en-CA)
  [✓] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
  [✓] Xcode - develop for iOS and macOS (Xcode 14.2)
  [✓] Chrome - develop for the web
  [✓] Android Studio (version 2022.3)
  [✓] VS Code (version 1.80.2)
  [✓] Connected device (2 available)
  [✓] Network resources
  • The Dart SDK is bundled with Flutter; it is not necessary to install Dart separately.
  • iOS
  • Android
  • Web App

Build and Run

  • Build the SDK Bindings
  • Android
    • Open the app in Android Studio
    • Either run the Emulator for Android or attach the usb device, Android studio will detect the device to run the app on your phone/test device.
  • iOS
    • run flutter build ios
    • run pod install in the ios folder
    • Open the app in XCode
    • Install app to Simulator or Device from the XCode Build tab
  • Web App
    • run flutter run -d chrome from the terminal

Build with WalletSDK from Maven

  • Android
    • Create GitHub personal access token (classic).
    • Run WALLET_SDK_USR=GIT_USR WALLET_SDK_TKN=TKN flutter run. Alternatively, add wallet-sdk-pkg.usr and wallet-sdk-pkg.tkn variables to android/local.properties and then run flutter run.

Note: If you are switching between the Maven version and a local version, the Gradle cache may need to be cleared. To do this, run rm -r $HOME/.gradle/.

Frequent Issues and Troubleshooting

  • Deprecation error in Android Studio
Problem:
Launching lib/main.dart on sdk gphone64 arm64 in debug mode...
Note: /Users/user/.pub-cache/hosted/pub.dev/uni_links-0.5.1/android/src/main/java/name/avioli/unilinks/UniLinksPlugin.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.

Solution:
In your android studio: 
Preferences > Build, Execution, Deployment > Build Tools > Gradle > check "Generate .IML files for modules imported from Gradle
  • Issues with Android SDK and NDK installation
Problem: 
Having issues with android sdk and ndk installation

Solution: 
Install the SDK Tools by following: 
Preferences | Appearance & Behavior | System Settings | Android SDK | SDK Tools | Android Tools 
Preferences | Appearance & Behavior | System Settings | Android SDK | SDK Tools | NDK