java.lang.NoClassDefFoundError: org.achartengine.renderer.XYMultipleSeriesRenderer解决办法

AChartEngine在做android绘图，achartengine.jar导进项目仍报java.lang.NoClassDefFoundError: org.achartengine.renderer.XYMultipleSeriesRenderer，上网找了些资料，找到如下解决方法：

在Eclipse中：

1. Right click your project - go to build path - select Configure buildpath
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)

完成上述操作如果还报异常，android编译后，SDK17中有些组件用的jar文件名为lib，可以把放achartengine.jar文件名改为libs。