android - achartengine demo compiling, but runtime error

Question

I followed demo instructions on page http://www.achartengine.org/content/goodies.html

i successfully imported the demo project, but every chart give throws a NoClassDefFoundError at runtime, similar to this:

java.lang.NoClassDefFoundError:
org.achartengine.model.XYMultipleSeriesDataset

achartengine-1.0.0.jar is on build path, and it is reported under 'Referenced Libraries'. I guess this is a newbie problem, but I decided to report it since I just imported the demo project 'as is' and tried to run it on my phone.

Do I need other steps, not listed on 'goodies' page?

Answer 1

I found a good answer on google groups, tested it and it seems to be working:

The only thing that I have ever came across in this case is the export of the jar ... if that makes sense.

In Eclipse:

1. Right click your project - go to build path - select Configure build path
2. go to the "Order and Export" tab
3. Check the "achartengine-1.0.0.jar box and then single click its name
4. move it up so its right below the Android dependancies (sometimes this can make a difference if you have multiple Jars)

click ok then clean your project. (Project -> Clean...)