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fb361f0f4c
Mirrors lojack-connect. .NET for Android runs no DEX shrinker by default, and even with AndroidLinkTool=r8 the ProGuard config the SDK generates hardcodes -dontobfuscate -- a flag nothing later in the config list can undo -- so Play Console's "DEX code optimization" report scores obfuscation at ~1%. _AndroidObfuscateDex drops the SDK's proguard_xamarin.cfg from R8's --pg-conf list and substitutes a copy without that line, regenerating the -printmapping/-keepattributes tail the SDK would have appended (absolute path: R8 resolves a relative -printmapping against the config file's own directory). 49.8% of DEX classes are now renamed. proguard.cfg carries the keeps the generated rules miss: classes the .NET runtime resolves by name from native code (net.dot.android.**), and public and protected fields, which the trimmer covers for methods only. The target also caches aapt2's keep rules outside FileWrites -- the SDK adds them to @(ProguardConfiguration) inside _CreateBaseApkWithAapt2 and registers the file as a FileWrite, so an incremental Release build that skips the resource link loses them and ships an APK that dies inflating FitWindowsFrameLayout. Verified on a Pixel 9 emulator (API 36) with the obfuscated Release APK: launch, connection list, Add Connection form, and a Bolt connection attempt that exercises the network/TLS stack and surfaces the driver's error dialog. The AAB carries mapping.txt, so Play retraces Java stacks itself. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
23 lines
1.2 KiB
INI
23 lines
1.2 KiB
INI
# App-level R8 keep rules, on top of the ones .NET for Android generates
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# (see proguard_xamarin.cfg and the _AndroidObfuscateDex target in the csproj).
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# The .NET runtime resolves this one by name from native code -- no DEX
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# reference points at it, so R8 renames it and startup dies with
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# "ClassNotFoundException: net.dot.android.ApplicationRegistration".
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# The SDK's own config only covers net.dot.jni.** and net.dot.android.crypto.**,
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# because upstream never obfuscates.
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-keep class net.dot.android.** { *; <init>(...); }
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# The trimmer's generated keep rules (proguard_project_references.cfg) cover the
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# Java *methods* the bindings call, but not their fields -- upstream never
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# obfuscates, so the gap never showed. A bound property backed by a Java field
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# reads it through JNI by name, and renaming breaks that:
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# NoSuchFieldError: no "Landroidx/lifecycle/Lifecycle$State;" field "DESTROYED"
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# NoSuchFieldError: no "I" field "left" in class "Landroidx/core/graphics/Insets;"
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# Only the API surface a binding can reach needs it; private fields still get
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# renamed, and class names -- what Play's report counts -- are untouched by this.
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-keepclassmembers class * {
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public <fields>;
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protected <fields>;
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}
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