CODEWITHSUNDEEP
androidgsonobfuscationproguard
GuilhE
GuilhE

Reputation: 11861

Android Proguard ExceptionInInitializerError and RuntimeException

I want to obfuscate my .apk and I'm having some troubles with Proguard. Using eclipse I've enabled this:

# To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):
proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt

I'm using 4 external libs:

I guess I'm having trouble with gson:

private static Type MY_DATA_TYPE = new TypeToken<Pair<Map<Point, Void>, Integer>>() {}.getType();

Every time I use it:

FATAL EXCEPTION: main
java.lang.ExceptionInInitializerError at com.myapp.MyActivity.onCreate(Unknown Source)

...

Caused by: java.lang.RuntimeException: Missing type parameter.
at com.google.gson.reflect.TypeToken.getSuperclassTypeParameter(Unknown Source)
at com.google.gson.reflect.TypeToken.<init>(Unknown Source)

I'm using this options but I guess it wont help:

-keepattributes Exceptions, InnerClasses, *Annotation*, EnclosingMethod

-dontskipnonpubliclibraryclassmembers
-libraryjars .../libs/android-support-v4.jar
-libraryjars .../libs/nine-old-android-lib.jar
-libraryjars .../libs/gson-2.2.2.jar
-libraryjars .../libs/commons-io-2.4.jar


-keep class java.** { *; }
-keep class android.** { *; }
-keep class org.** { *; }
-keep class com.google.** { *; }
-keep class com.facebook.** { *; }
-keep class com.nineoldandroids.** { *; }

How can I solve this and create an obfuscated .apk that works properly?
Thanks for your time.

Upvotes: 3

Views: 4654

Answers (2)

Shahidul
Shahidul

Reputation: 3037

Proguard configuration as shown by google gson proguard example.

google gson proguard configuration link

##---------------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.
-keepattributes Signature

# For using GSON @Expose annotation
-keepattributes *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.** { *; }

# Prevent proguard from stripping interface information from TypeAdapterFactory,
# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
-keep class * implements com.google.gson.TypeAdapterFactory
-keep class * implements com.google.gson.JsonSerializer
-keep class * implements com.google.gson.JsonDeserializer

##---------------End: proguard configuration for Gson  ----------

Upvotes: 1

GuilhE
GuilhE

Reputation: 11861

Guess this is a gson "problem", here's the solution:

-keepattributes Signature
-keep class sun.misc.Unsafe { *; }
-keep class com.google.gson.examples.android.model.** { *; }

Thanks to https://groups.google.com/forum/#!topic/google-gson/6XuHfOoZIKo

Upvotes: 8

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