Android Jar libraries

Question

How do you setup a project that can result in a jar library file that can be used for android? I want to create a custom library across all projects.

Few other quest

Answer 1

There is nothing special you need to do to your project setup to create a jar file that will work in an Android app. Just create a normal Java project in Eclipse.

1. It doesn't need to be compiled against Android at all. You can include any jar file as long as it doesn't reference classes that aren't included in Android. Just include your jar file in your build path of your Android projects in Eclipse, and it will automatically be included in your APK file.

2. Not sure but I assume all classes in the jar file get included in the APK.

3. I don't think just including some classes in a jar vs. in the project directly will make any difference in the resulting APK.