https://github.com/runningcode/workmanagerapi
Breaking WorkManager API change demo
https://github.com/runningcode/workmanagerapi
Last synced: 9 months ago
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Breaking WorkManager API change demo
- Host: GitHub
- URL: https://github.com/runningcode/workmanagerapi
- Owner: runningcode
- Created: 2025-03-19T14:23:16.000Z (about 1 year ago)
- Default Branch: main
- Last Pushed: 2025-03-19T14:41:33.000Z (about 1 year ago)
- Last Synced: 2025-09-16T02:59:11.074Z (9 months ago)
- Language: Kotlin
- Size: 29 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
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README
# WorkManager 2.10.0 breaking API change
## Problem
WorkManager 2.10.0 rewrites the WorkManager class in Kotlin. While the change does not require any code changes it is a breaking change as demonstrated by this sample.
If an application is compiled against WorkManager 2.9.0 and a library is compiled against WorkManager 2.10.0, the application will crash with a `NoSuchFieldError` when calling `WorkManager.getInstance(Context: context)`.
Running the app via `./gradlew installDebug` will result in the following exception:
```bash
FATAL EXCEPTION: main (Ask Gemini)
Process: com.example.workmanagerapi, PID: 5697
java.lang.NoSuchFieldError: No field Companion of type Landroidx/work/WorkManager$Companion; in class Landroidx/work/WorkManager; or its superclasses (declaration of 'androidx.work.WorkManager' appears in /data/app/~~lXaMPfHlH6UF25BlMc9JWw==/com.example.workmanagerapi-hAkDqnriSeQp7f5LKMu42Q==/base.apk!classes6.dex)
at com.example.work_manager_using_library.UseWorkmanager.use(UseWorkmanager.kt:9)
at com.example.workmanagerapi.MainActivity.onCreate(MainActivity.kt:31)
at android.app.Activity.performCreate(Activity.java:9002)
at android.app.Activity.performCreate(Activity.java:8980)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1526)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4030)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4235)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:112)
at android.app.servertransaction.TransactionExecutor.executeNonLifecycleItem(TransactionExecutor.java:174)
at android.app.servertransaction.TransactionExecutor.executeTransactionItems(TransactionExecutor.java:109)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:81)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2636)
at android.os.Handler.dispatchMessage(Handler.java:107)
at android.os.Looper.loopOnce(Looper.java:232)
at android.os.Looper.loop(Looper.java:317)
at android.app.ActivityThread.main(ActivityThread.java:8705)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:580)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:886)
```
The `:work-manager-using-library` is compiled against `androidx.work:work-runtime-ktx:2.10.0`.
The `:app` is compiled against `androidx.work:work-runtime-ktx:2.9.0`.
The `getInstance()` method in the `WorkManager` class is annotated with `@JvmStatic` which should result in the same API but the compiled code is not compatible.
Issuetracker link: https://issuetracker.google.com/issues/404745554