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Description
Description
I'm encountering a build failure on Android with the error e: file:///Users/lukasharing/.pub-cache/hosted/pub.dev/cryptography_flutter-2.3.2/android/src/main/kotlin/dev/dint/cryptography_flutter/CryptographyFlutterPlugin.kt:24:48 Unresolved reference: Registrar
. This seems to be related to the cryptography_flutter
plugin during the compilation of its Kotlin code.
Steps to Reproduce
- Ensure
cryptography_flutter
is included in thepubspec.yam
file. (Specify the version you are using, which is^2.3.0
based on your providedplugin versions
). - Run
flutter clean
. - Run
flutter pub get
. - Attempt to build the Android application using
flutter build apk --release
orflutter run
.
Expected Behavior
The Android application should build successfully without compilation errors.
Actual Behavior
The build fails with the Unresolved reference: Registrar
error in the cryptography_flutter
plugin's Kotlin code.
Error Output
e: file:///Users/lukasharing/.pub-cache/hosted/pub.dev/cryptography_flutter-2.3.2/android/src/main/kotlin/dev/dint/cryptography_flutter/CryptographyFlutterPlugin.kt:24:48 Unresolved reference: Registrar
FAILURE: Build failed with an exception.
* What went wrong:
Execution failed for task ':cryptography_flutter:compileReleaseKotlin'.
> A failure occurred while executing org.jetbrains.kotlin.compilerRunner.GradleCompilerRunnerWithWorkers$GradleKotlinCompilerWorkAction
> Compilation error. See log for more details
* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
BUILD FAILED in 2s
Error: Gradle task assembleRelease failed with exit code 1
#0 throwToolExit (package:flutter_tools/src/base/common.dart:34:3)
#1 AndroidGradleBuilder.buildGradleApp (package:flutter_tools/src/android/gradle.dart:582:7)
<asynchronous suspension>
#2 AndroidGradleBuilder.buildApk (package:flutter_tools/src/android/gradle.dart:242:5)
<asynchronous suspension>
#3 AndroidDevice.startApp (package:flutter_tools/src/android/android_device.dart:573:7)
<asynchronous suspension>
#4 FlutterDevice.runCold (package:flutter_tools/src/resident_runner.dart:490:33)
<asynchronous suspension>
#5 ColdRunner.run (package:flutter_tools/src/run_cold.dart:55:28)
<asynchronous suspension>
#6 AppDomain.launch.<anonymous closure> (package:flutter_tools/src/commands/daemon.dart:819:9)
<asynchronous suspension>
#7 Future.any.onValue (dart:async/future.dart:616:5)
<asynchronous suspension>
Flutter Doctor Output
[✓] Flutter (Channel stable, 3.32.0, on macOS 15.4.1 24E263 darwin-arm64, locale en-US) [864ms]
• Flutter version 3.32.0 on channel stable at /Users/lukasharing/fvm/versions/3.32.0
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision be698c48a6 (10 days ago), 2025-05-19 12:59:14 -0700
• Engine revision 1881800949
• Dart version 3.8.0
• DevTools version 2.45.1
[✓] Android toolchain - develop for Android devices (Android SDK version 35.0.0) [1,972ms]
• Android SDK at /Users/lukasharing/Library/Android/sdk
• Platform android-35, build-tools 35.0.0
• ANDROID_HOME = /Users/lukasharing/Library/Android/sdk
• Java binary at: /Users/lukasharing/Library/Java/JavaVirtualMachines/jbr-17.0.12/Contents/Home/bin/java
This JDK is specified in your Flutter configuration.
To change the current JDK, run: `flutter config --jdk-dir="path/to/jdk"`.
• Java version OpenJDK Runtime Environment JBR-17.0.12+1-1207.37-nomod (build 17.0.12+1-b1207.37)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 16.3) [797ms]
• Xcode at /Applications/Xcode.app/Contents/Developer
• Build 16E140
• CocoaPods version 1.16.2
[✓] Chrome - develop for the web [12ms]
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2024.3) [11ms]
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 21.0.6+-13368085-b895.109)
[✓] VS Code (version 1.100.1) [9ms]
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.110.0
[✓] Connected device (4 available) [6.0s]
• Raspberry Pi 5 (mobile) • 172.16.20.16:5555 • android-arm64 • Android 14 (API 34)
• Luky’s iPhone1 (wireless) (mobile) • 00008120-001A7DD10E60C01E • ios • iOS 18.5 22F76
• macOS (desktop) • macos • darwin-arm64 • macOS 15.4.1 24E263 darwin-arm64
• Chrome (web) • chrome • web-javascript • Google Chrome 136.0.7103.114
[✓] Network resources [1,016ms]
• All expected network resources are available.
• No issues found!
Plugin Versions
cryptography: ^2.7.0
cryptography_flutter: ^2.3.0
Adrian-Samoticha and CaglarKullu
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