Error generating signed APK due to proguard rules - proguard

Question

Generating signed APK giving error after I updated Android Studio to 3.3-rc01 and enabled R8 code shrinking.
It is giving following proguard error :
Error: ~/app/proguard-rules.pro, offset: 2613, line: 74, column: 7, Expected char '-' at ~/app/proguard-rules.pro:74:7
-dump class_files.txt
before android studio 3.3-rc01 and without R8 code shrinking it was working perfectly fine.
Any workarounds for this or I have to disable the proguard rules now.
Following is my proguard-rules.pro file
# Add project specific ProGuard rules here.
# You can control the set of applied configuration files using the
# proguardFiles setting in build.gradle.
#
# For more details, see
# http://developer.android.com/guide/developing/tools/proguard.html
# If your project uses WebView with JS, uncomment the following
# and specify the fully qualified class name to the JavaScript interface
# class:
#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
# public *;
#}
# Uncomment this to preserve the line number information for
# debugging stack traces.
#-keepattributes SourceFile,LineNumberTable
# If you keep the line number information, uncomment this to
# hide the original source file name.
#-renamesourcefileattribute SourceFile
# Retrofit does reflection on generic parameters and InnerClass is required to use Signature.
-keepattributes Signature, InnerClasses
# Retain service method parameters when optimizing.
-keepclassmembers,allowshrinking,allowobfuscation interface * {
#retrofit2.http.* <methods>;
}
# Ignore annotation used for build tooling.
-dontwarn org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
# Ignore JSR 305 annotations for embedding nullability information.
-dontwarn javax.annotation.**
# Guarded by a NoClassDefFoundError try/catch and only used when on the classpath.
-dontwarn kotlin.Unit
# Top-level functions that can only be used by Kotlin.
-dontwarn retrofit2.-KotlinExtensions
# A resource is loaded with a relative path so the package of this class must be preserved.
-keepnames class okhttp3.internal.publicsuffix.PublicSuffixDatabase
# Animal Sniffer compileOnly dependency to ensure APIs are compatible with older versions of Java.
-dontwarn org.codehaus.mojo.animal_sniffer.*
# OkHttp platform used only on JVM and when Conscrypt dependency is available.
-dontwarn okhttp3.internal.platform.ConscryptPlatform
-dontwarn javax.xml.stream.**
-dontwarn rx.internal.util.unsafe.**
#Glide proguard rules
-keep public class * implements com.bumptech.glide.module.GlideModule
-keep public class * extends com.bumptech.glide.module.AppGlideModule
-keep public enum com.bumptech.glide.load.resource.bitmap.ImageHeaderParser$** {
**[] $VALUES;
public *;
}
-keep class android.support.v7.widget.LinearLayoutManager { *; }
-keep public class * extends android.support.v7.widget.RecyclerView$LayoutManager {
public <init>(...);
}
##---------------Begin: proguard configuration common for all Android apps ----------
-optimizationpasses 5
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontskipnonpubliclibraryclassmembers
-dontpreverify
-verbose
-dump class_files.txt
-printseeds seeds.txt
-printusage unused.txt
-optimizations !code/simplification/arithmetic,!field/*,!class/merging/*
-allowaccessmodification
-keepattributes *Annotation*
-renamesourcefileattribute SourceFile
-repackageclasses ''
-keep class com.qikcircle.qiketask.models.** { *; }
-keep class android.support.v4.** {*;}
-keep public class * extends android.app.Activity
-keep public class * extends android.support.v4.app.Fragment
-keep public class * extends android.app.Application
-keep public class * extends android.app.Service
-keep public class * extends android.content.BroadcastReceiver
-keep public class * extends android.content.ContentProvider
-keep public class * extends android.app.backup.BackupAgentHelper
-keep public class * extends android.preference.Preference
-keep public class com.android.vending.licensing.ILicensingService
-dontnote com.android.vending.licensing.ILicensingService
# Explicitly preserve all serialization members. The Serializable interface
# is only a marker interface, so it wouldn't save them.
-keepclassmembers class * implements java.io.Serializable {
static final long serialVersionUID;
private static final java.io.ObjectStreamField[] serialPersistentFields;
private void writeObject(java.io.ObjectOutputStream);
private void readObject(java.io.ObjectInputStream);
java.lang.Object writeReplace();
java.lang.Object readResolve();
}
# Preserve all native method names and the names of their classes.
-keepclasseswithmembernames class * {
native <methods>;
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembernames class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
# Preserve static fields of inner classes of R classes that might be accessed
# through introspection.
-keepclassmembers class **.R$* {
public static <fields>;
}
# Preserve the special static methods that are required in all enumeration classes.
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep public class * {
public protected *;
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
##---------------End: proguard configuration common for all Android apps ----------
##---------------Begin: proguard configuration for Gson ----------
# Gson uses generic type information stored in a class file when working with fields. Proguard
# removes such information by default, so configure it to keep all of it.
# For using GSON #Expose annotation
# Gson specific classes
-keep class sun.misc.Unsafe { *; }
#-keep class com.google.gson.stream.** { *; }
# Application classes that will be serialized/deserialized over Gson
-keep class com.google.gson.examples.android.model.** { *; }
##---------------End: proguard configuration for Gson ----------
#removing logs
-assumenosideeffects class android.util.Log {
public static boolean isLoggable(java.lang.String, int);
public static int v(...);
public static int i(...);
public static int w(...);
public static int d(...);
public static int e(...);
}
#for getting crash reports
-assumenosideeffects class android.util.Log {
public static int v(...);
public static int d(...);
}
#Crashlytics proguard rules
-keepattributes SourceFile,LineNumberTable
-keep public class * extends java.lang.Exception
-ignorewarnings
-keep class * {
public private *;
}

Answer 1

I've tried the dump directive with Proguard (I didn't use it before) and all works fine.
[...]
## Strip Log.d
-assumenosideeffects class android.util.Log {
public static *** d(...);
}
-dump foo.txt
[...]
And I find my foo.txt under ./app/foo.txt
Printing classes to [./app/foo.txt]...
Then I enable R8 in legacy mode:
# For the bravests
android.enableR8=true
# For the crazyest. Must be enable also the previous setting
#android.enableR8.fullMode=true
And I got your error.
Without this line I can compile my APK even in full mode without any (apparent) issue.
So I confirm that this directive is not supported. Remember that R8 is still in beta. If you want you can submit an issue on the link I posted in comment.
Opened the issue here.

Answer 2

for me i had to remove the first line " public private *; " in my prograuard.pro file