android can't find class from external jar

Question

I am trying to create a simple test app that basically extends the Android Hello World tutorial app by invoking some simple functionality from an external JAR. However, when

Answer 1

i. Generate Jar for your external Classes

ii. Copy to Libs folder of your Android Project

iii. Open Eclipse->Right Click on Jar->Add To Build Path.

iv. Clean Project and Run Application.

Answer 2

There's no need to build the external jar. Try removing it from your build path and follow these steps:

1. Create a folder in the root of your Android project called libs.
2. Add the jar to that folder.
3. Right-click the jar and click to add to build path.
4. Clean your project and try it again.