9fe60a6368
Filament references a few classes from native code and by reflections,
so when proguarding binaries we typically had to add an exception for
filament to make it run:
-keep class com.google.android.filament.** {*;}
In a compiled .dex file, the filament namespace takes about 120kb
(before compression), even if the classes aren't used.
To enable proguarding and stripping out unused filament classes,
introduce a UsedByNative and UsedByReflection annotation to explicitly
mark classes that need to be kept in the dex, so that the rest can be
potentially stripped out.
In my testing, this reduces the filament namespace in the .dex from
120kb->40kb, which translates to about 30kb apk size savings after
compression.
23 lines
838 B
Prolog
23 lines
838 B
Prolog
# Add project specific ProGuard rules here.
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# You can control the set of applied configuration files using the
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# proguardFiles setting in build.gradle.
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#
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# For more details, see
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# http://developer.android.com/guide/developing/tools/proguard.html
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# JNI is an entry point that's hard to keep track of, so there's
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# an annotation to mark fields and methods used by native code.
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# Keep the annotations that proguard needs to process.
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-keep class com.google.android.filament.proguard.UsedBy*
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# Just because native code accesses members of a class, does not mean that the
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# class itself needs to be annotated - only annotate classes that are
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# referenced themselves in native code.
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-keep @com.google.android.filament.proguard.UsedBy* class * {
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<init>();
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}
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-keepclassmembers class * {
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@com.google.android.filament.proguard.UsedBy* *;
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}
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