Jean-Luc Makiola
bc59200f77
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Home-screen widgets were stuck on the Glance loading layout (a blank spinner) in the minified release build — but worked in debug. Root cause: Glance renders every widget through a WorkManager worker (androidx.glance.session.SessionWorker), and WorkManager instantiates the InputMerger reflectively from the fully-qualified class name persisted in the WorkSpec (Class.newInstance, no-arg ctor). Under R8 full mode (AGP 9 default) the unused no-arg constructor of androidx.work.OverwritingInputMerger was stripped, so WorkManager threw "OverwritingInputMerger has no zero argument constructor", the SessionWorker never ran, and provideContent never executed — leaving the widget on its initial loading layout forever. Same R8-reflection family as the v2.7.0 Room keep-rule fix. Keep the name + constructor of every androidx.work.InputMerger. Verified on-device with the releaseTest build (R8-minified): the agenda widget, which showed only a spinner before, now renders its content; the WM-InputMerger InstantiationException is gone. Closes #18. Cuts v2.7.3. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
29 lines
1.6 KiB
Prolog
29 lines
1.6 KiB
Prolog
# Keep Hilt-generated classes
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-keep class dagger.hilt.** { *; }
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-keep @dagger.hilt.android.HiltAndroidApp class *
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# Compose Compiler may keep its own; defaults are fine
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-dontwarn org.jetbrains.annotations.**
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# Room database implementations (pulled in transitively via
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# androidx.glance:glance-appwidget → androidx.work → androidx.room).
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# The widgets rely on Glance, whose WorkManager backend stores state in a Room
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# database. Under R8 full mode (AGP 9 default) the generated *_Impl subclasses
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# of RoomDatabase lose their usable no-arg constructor / are marked abstract,
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# so Room's reflective instantiation throws InstantiationException and the app
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# crashes at startup with "Failed to create an instance of ...WorkDatabase".
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# Keep the generated Room database implementations fully intact.
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-keep class * extends androidx.room.RoomDatabase { *; }
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-dontwarn androidx.room.paging.**
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# WorkManager instantiates an InputMerger reflectively (Class.newInstance) from
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# the fully-qualified class name persisted in the WorkSpec, so the class must
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# keep both its name and a no-arg constructor. Glance renders every widget
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# through a WorkManager worker (androidx.glance.session.SessionWorker) whose
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# default merger is androidx.work.OverwritingInputMerger. Under R8 full mode
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# (AGP 9 default) that unused no-arg constructor was stripped, so WorkManager
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# threw "OverwritingInputMerger has no zero argument constructor", the
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# SessionWorker never ran, and widgets were stuck on their loading layout
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# (a blank spinner) in release builds. Keep every InputMerger's name + ctor.
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-keep class * extends androidx.work.InputMerger { <init>(...); }
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