android - How to make Proguard ignore external libraries?

Question

I want to use Proguard mainly for obfuscation reasons.

My problem is that I have three libraries, Twitter4J and two signpost libraries. These libraries caused errors when I tried to create an signed APK. To get over this I put the following in the proguard.config file...

-dontwarn org.apache.commons.codec.binary.** 
-dontwarn org.slf4j.** 
-dontwarn com.sun.syndication.io.**
-dontwarn com.sun.syndication.feed.synd.*   

While this got rid of the errors in the console, when i loaded my signed APK onto my mobile phone it instantly crashed. The DDMS said this was due to a class not found in Twitter4J.

Getting rid of the "dontwarns" above did not help. Neither did adding dontshrink dontoptimise.

I would like Proguard to completely ignore the libraries (as they are open source anyway). Is this possible?

Answer 1

Try this:

-keep class javax.** { *; }
-keep class org.** { *; }
-keep class twitter4j.** { *; }

Cf post from @CaspNZ: Android Proguard with external jar