How to make works cordova-based app with ProGuard

Question

Im trying to build cordova-based app with obfuscation enabled.
IBM MobileFirst Platform Foundation version is 7.1.0.00.20151227-1730.

My steps:
- create new classic mfp project (used as environment runtime)
- create new mfp cordova project with Android Env (used as client app)
- push new client app to environment
- uncomment proguard.config option in project.properties
- add proper keystore configuration in project.properties - configure app for release
- run ant release as usual

Output: I get huge amount of warnings
[proguard] Note: duplicate definition of program class ...

Then build failes
[proguard] Warning: there were 1 unresolved references to program class members. [proguard] Your input classes appear to be inconsistent. [proguard] You may need to recompile them and try again. [proguard] Alternatively, you may have to specify the option [proguard] '-dontskipnonpubliclibraryclassmembers'. BUILD FAILED

And this is on newly created project. Nothing changed. Just added keystore.

How should I properly configure ProGuard?

Answer 1

The problem in your case has to do with classes that have package private access modifiers on fields or methods. These get obfuscated by default. Thus the warning "Warning: there were 1 unresolved references to program class members."

As suggested you could use -dontskipnonpubliclibraryclassmembers in proguard-project.txt (see below). For details on this and other config parameters, check http://proguard.sourceforge.net/manual/usage.html

Change android/proguard configuration in proguard-project.txt (see http://tools.android.com/recent/proguardimprovements)