Proguard failing with 25.1.6 release of Android tools

Question

I downloaded the 25.1.6 release of Android tools today and I'm noticing that proguard is falling over with this error:

Error:Execution failed for task ':app:transformClassesWithNewClassShrinkerForDebug'.
> /usr/local/opt/android-sdk/tools/proguard/proguard-android.txt line 43:15 extraneous input '[]' expecting ')'

I'm certain that I've not changed anything in the proguard-android.txt file. Line 43 reads for me as follows:

void set*(%[]);

I'm noticing that the file here...

https://android.googlesource.com/platform/sdk/+/android-6.0.1_r43/files/proguard-android.txt

... is different to what I have on my machine? Is that file the latest version of the file that I should have?

Answer 1

Just to know several options:

The thing that helped me is replacing corresponding proguard-android.txt file with the one from this page

And just in case the page goes away saving its content here:

# This is a configuration file for ProGuard.
# http://proguard.sourceforge.net/index.html#manual/usage.html
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-verbose
# Optimization is turned off by default. Dex does not like code run
# through the ProGuard optimize and preverify steps (and performs some
# of these optimizations on its own).
-dontoptimize
-dontpreverify
# Note that if you want to enable optimization, you cannot just
# include optimization flags in your own project configuration file;
# instead you will need to point to the
# "proguard-android-optimize.txt" file instead of this one from your
# project.properties file.
-keepattributes *Annotation*
-keep public class com.google.vending.licensing.ILicensingService
-keep public class com.android.vending.licensing.ILicensingService
# For native methods, see http://proguard.sourceforge.net/manual/examples.html#native
-keepclasseswithmembernames class * {
    native <methods>;
}
# keep setters in Views so that animations can still work.
# see http://proguard.sourceforge.net/manual/examples.html#beans
-keepclassmembers public class * extends android.view.View {
   void set*(***);
   *** get*();
}
# We want to keep methods in Activity that could be used in the XML attribute onClick
-keepclassmembers class * extends android.app.Activity {
   public void *(android.view.View);
}
# For enumeration classes, see http://proguard.sourceforge.net/manual/examples.html#enumerations
-keepclassmembers enum * {
    public static **[] values();
    public static ** valueOf(java.lang.String);
}
-keepclassmembers class * implements android.os.Parcelable {
  public static final android.os.Parcelable$Creator CREATOR;
}
-keepclassmembers class **.R$* {
    public static <fields>;
}
# The support library contains references to newer platform versions.
# Don't warn about those in case this app is linking against an older
# platform version.  We know about them, and they are safe.
-dontwarn android.support.**

Answer 2

Hmm, it looks the tools/proguard folder in my local copy of the Android SDK is not updated by the Android SDK Manager. I just downloaded the Android SDK afresh from here...

http://developer.android.com/sdk/index.html

... and replaced the tools/proguard folder in that distribution over the tools/proguard in my local copy of the Android SDK and the error's gone.

Would be great if the tools/proguard folder was updated via the Android SDK Manager.