Flex导出pdf碰到的诡异问题的解决方法

问题描述：
在as中import org.alivepdf.data.Grid;并实例化Grid。按道理应该不会报错，但是报错了：
1046: 找不到类型,或者它不是编译时常数: Grid。
Can not resolve a multiname reference unambiguously. mx.containers:Grid (from C:\Program Files\Adobe\Flex Builder 3 Plug-in\sdks\3.2.0\frameworks\libs\framework.swc(mx/containers/Grid)) and org.alivepdf.data:Grid (from D:\workspace\TSJM3.0_FLEX\libs\AlivePDF.swc(org/alivepdf/data/Grid)) are available.

解决办法：
由var grid:Grid=new Grid(xmlarr, 50,80, new RGBColor(0x0038FF), new RGBColor(0x00CCFF), true, new RGBColor(0x0), .1);

明确指定Grid的来源（包路径）：
var grid:org.alivepdf.data.Grid
=new org.alivepdf.data.Grid(xmlarr, 50,80, new RGBColor(0x0038FF), new RGBColor(0x00CCFF), true, new RGBColor(0x0), .1);