将android库项目转换为jar文件

Question

I have a create an android library project which has to be given to a 3rd party application,I have two requirements,

1)convert the library project into a jar file (or),

2)Make the source code in the library project obfuscated.

Basically i dont want to 3rd party application developer to get my source code.

Please help! thanks in advance!

Answer 1

The ProGuard -Application lets you shrink and obfuscate your code. It is from the Android developers, so you can assume it is safe to use it.

Answer 2

This is the closest that you can get:

1: Create a regular Android library project, and get it working.

2: Copy that Android library project into another directory.

3: Create a JAR from the compiled Java classes from the original Android library project, and put that JAR in the libs/ directory of the copy you made in Step #2. You should be able to run ProGuard on this JAR manually, though I haven't tried that.

4: Remove everything inside the src/ directory of the copied library project, leaving behind and empty src/ directory.

5: ZIP up or otherwise distribute the copied Android library project.

Answer 3

This is what you need to do:

1. Create your library project. Write a test application that tests your library. Build your library project. You could use ant/maven through eclipse. Most libraries now need gradle support because applications are now using Android Studio. Mark your project as a library by going to Project -> Properties -> Android and select the Is Library checkbox. Check this link: http://developer.android.com/tools/projects/projects-eclipse.html .

2. If you don't want a 3rd party app developer to see your source files, you need to enable proguard. This tool shrinks, obfuscates your code. The application that uses your library has a lot of control over what code needs obfuscation. For example, an application can decide that it wants all packages starting with com.blah.blah* to not be obfuscated by specifying the -keep option in its proguard config file. This will prevent certain sections of code from getting obfuscated. You should allow default obfuscation for libraries unless you decide to use components which don't function with obfuscation (like annotations or reflections).

By enabling proguard, a third party developer will not get access to your source on reverse-engineering your apk. Use wisely!