achartengine各种统计图形示例代码，支持android2.1以上，里面的achartengine用的是最新的0.7版本，需要统计图开地的可以参考一下。-achartengine various statistical graphic sample code to support more than android2.1, the inside achartengine is the latest 0.7 version, need charts open to refer to.