问题
How can I use import fl.data.DataProvider; in Adobe CS4. When I try to import it showing
1172: Definition fl.controls could not be found.
回答1:
the fl library will not show up in your IDE until you drag a component that actually uses it (in this case, a component that uses a data provider) into your library.
you can manually add fl to your class path if you want so that it's always there, but it's not more useful since you'll need the target component in your library during compile time anyway. it's by design. components have a built-in "Component Shim" that exposes its code package to your IDE.
来源：https://stackoverflow.com/questions/4224044/import-fl-data-dataprovider-is-not-working-in-adobe-cs4