How to resolve a library conflict (apache commons-codec)
问题 I have a problem with Android libraries. I would like use the method Hex.encodeHexString(Byte Array) from the library org.apache.commons.codec.binary.Hex (version 1.6) On my Android platform (SDK 2.3.1), the commons-codec library version 1.3 already exist but the method doesn't exist yet in this version (only encodeHex() ). I added the jar library of version 1.6 into my Eclipse project (into /libs directory) but when I run the project on Emulator, I get this : E/AndroidRuntime(1632): FATAL