[Bug report] proguard

[Reginer]

What is the proguard ?

-keep class com.google.mlkit.** { *; }
-dontwarn com.google.mlkit.**

Is there anything smaller than this range?

[Reginer]

When I use AGP8, I don't need to add obfuscation rules to make it work, but when I upgrade to AGP9, it crashes due to obfuscation. Adding the above obfuscation rules does work, but the rules seem too general. Are there more specific obfuscation rules available?

Caused by:

java.lang.NullPointerException:Attempt to read from field 'r9.d com.google.mlkit.vision.barcode.internal.zzg.r9.d a' on a null object reference
com.google.mlkit.vision.barcode.internal.zzg.com.google.mlkit.vision.barcode.internal.zzh zzb(com.google.mlkit.vision.barcode.BarcodeScannerOptions)(zzg.java:1)
com.google.mlkit.vision.barcode.BarcodeScanning.com.google.mlkit.vision.barcode.BarcodeScanner getClient(com.google.mlkit.vision.barcode.BarcodeScannerOptions)(BarcodeScanning.java:3)
com.king.mlkit.vision.barcode.analyze.BarcodeScanningAnalyzer.void <init>(com.google.mlkit.vision.barcode.BarcodeScannerOptions)(BarcodeScanningAnalyzer.java:51)
com.king.mlkit.vision.barcode.analyze.BarcodeScanningAnalyzer.void <init>(int,int[])(BarcodeScanningAnalyzer.java:44)

[Cuyer]

I added following keep rules:

-keep class com.google.mlkit.vision.barcode.** { *; }
-keep class com.google.mlkit.vision.common.** { *; }
-keep class com.google.mlkit.common.** { *; }

In my case it works. I am working with KMM project and I have MLKit in shared module and in gradle there I added:

kotlin {
    androidLibrary {
        namespace = "app"
        withJava()
    }
}

Additionally I added following to my convention plugin for shared libraries

 optimization {
                            consumerKeepRules.apply {
                                publish = true
                                file("consumer-proguard-rules.pro")
                            }
                        }

This I added to my convention plugin, which configures build types for Android

                    getByName("release") {
                        isMinifyEnabled = true
                        proguardFiles(
                            getDefaultProguardFile("proguard-android-optimize.txt"),
                            "proguard-rules.pro"
                        )
                    }

I don't know which one really helped.

[Reginer]

I added following keep rules:

-keep class com.google.mlkit.vision.barcode.** { *; }
-keep class com.google.mlkit.vision.common.** { *; }
-keep class com.google.mlkit.common.** { *; }

In my case it works. I am working with KMM project and I have MLKit in shared module and in gradle there I added:

kotlin {
androidLibrary {
namespace = "app"
withJava()
}
}
Additionally I added following to my convention plugin for shared libraries

optimization {
consumerKeepRules.apply {
publish = true
file("consumer-proguard-rules.pro")
}
}
This I added to my convention plugin, which configures build types for Android

                getByName("release") {
                    isMinifyEnabled = true
                    proguardFiles(
                        getDefaultProguardFile("proguard-android-optimize.txt"),
                        "proguard-rules.pro"
                    )
                }

I don't know which one really helped.

-keep class com.google.mlkit.common.** { *; }

include

-keep class com.google.mlkit.vision.barcode.** { *; }
-keep class com.google.mlkit.vision.common.** { *; }

It's actually the same as what I wrote above.

[Junzz0]

The original rules that come with barcode scanning are:

# We keep all fields for every generated proto file as the runtime uses
# reflection over them that ProGuard cannot detect. Without this keep
# rule, fields may be removed that would cause runtime failures.
-keepclassmembers class * extends com.google.android.gms.internal.mlkit_vision_barcode_bundled.zzeh {
  <fields>;
}

# This prevents the names of native methods from being obfuscated and prevents
# UnsatisfiedLinkErrors.
-keepclasseswithmembernames class * {
    native <methods>;
}

However, it is not compatible with AGP 9's strictFullModeForKeepRules.

For now, I'm bypassing it using android.r8.strictFullModeForKeepRules=false.

Looking forward to the official support for AGP9 directly.

#1007