🐞[Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @fb04536]

[gangzhaorige]

• I have read the README
• I have done the setup for Android
• I have done the setup for iOS
• I have ran the sample app and it does not work there

Version

Technology	Version
Workmanager version	0.5.0-dev.4
Xcode version	12.5
Swift version	5
iOS deployment target	12

Describe the error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugMainManifest'.
> Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @fb04536

* 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 27s
Exception: Gradle task assembleDebug failed with exit code 1

Output of flutter doctor -v

[✓] Flutter (Channel stable, 2.0.6, on macOS 11.3.1 20E241 darwin-x64, locale en)
    • Flutter version 2.0.6 at /Users/ganaa/flutter
    • Framework revision 1d9032c7e1 (8 weeks ago), 2021-04-29 17:37:58 -0700
    • Engine revision 05e680e202
    • Dart version 2.12.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/ganaa/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Library/Java/JavaVirtualMachines/jdk-16.0.1.jdk/Contents/Home/bin/java
    • Java version Java(TM) SE Runtime Environment (build 16.0.1+9-24)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 12.5, Build version 12E262
    • CocoaPods version 1.10.1

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/docs/get-started/install/macos#android-setup for detailed instructions).

[✓] VS Code (version 1.57.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.23.0

[✓] Connected device (3 available)
    • sdk gphone x86 arm (mobile) • emulator-5554 • android-x86    • Android 11 (API 30) (emulator)
    • macOS (desktop)             • macos         • darwin-x64     • macOS 11.3.1 20E241 darwin-x64
    • Chrome (web)                • chrome        • web-javascript • Google Chrome 91.0.4472.106

[ened]

@gangzhaorige You are using Java 16, which is not yet supported everywhere. Please use Java 11 as it's the currently supported Java version on Android.

[mjoji]

Hi

How do I "Use Java 11" in my flutter app? do you know where and how do I change this?
Thank you!

[AjayShanker-geek]

I don't know how to change but you could remove Java 16 (rm -rf /Library/Java/JavaVirtualMachines/jdk-16.jdk).

Follow: JDK Uninstallation Guide

Check your version again after removing it by using java -version in terminal. Hope it helps :)

[mjoji]

Hi There. Yes. Removing Java version 16 worked. I also had to change my "JAVA_HOME" environment variable to point to the lower version of Java (in my case, version 8). Thank you so much for your help! Much appreciated

[saeidparvizi]

Using flutter upgrade in terminal.

[marchellodev]

There is no need to uninstall Java 16

Changing gradle version in gradle-wrapper properties to 7.1.1 (6.x does not support java 16), and adding the following line in gradle.properties (https://stackoverflow.com/questions/42667837/running-application-with-java-9-module-java-base-does-not-opens-java-io)

org.gradle.jvmargs=-Xmx1536M --add-exports=java.base/sun.nio.ch=ALL-UNNAMED --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.lang.reflect=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-exports=jdk.unsupported/sun.misc=ALL-UNNAMED

seems to solve the issue

[archi7]

@marchellodev solution worked for me.

[SeptiyanAndika]

@marchellodev thanks, solution worked for me.

[ihilalahmad]

@marchellodev Thanks, your solution worked thanks again man.

[StephanCassel]

@marchellodev are my man (only three hours in the bin)

[joanbric]

Finally work!!!

Thanks @marchellodev
You are the best. 👏

[veda2wratha]

flutter upgrade worked for me.

[ggiller]

@marchellodev just saved my life 💯