Step 1:
Here: http://opensource.adobe.com/wiki/display/flexsdk/Download+Flex+ 3 download Versions later than 3.0.1.1728
Step 2:
Decompress and download the package to yourFlexThe sdks directory installed by builder, which is stored in AdobeFlexBuilder 3 plug-in/sdks.
Step 3:
Open nowFlexBuilder preferences, open the menuFlex-> InstalledFlexSdks: click Add.
Step 4:
Browse the new SDK installed in step 2, give it a unique name, and click OK
Step 5:
Set the new SDK as the default SDK
Step 6:
Create a newFlexProject
Step 7:
Set the type of the project to Web application.
Step 8:
Right-click the new project and choose Properties. BrowseFlexCompiler, make sure 3.0.1.1739 is the default SDK, SetFlash PlayerVersion: 10.0.0
Step 9:
ConversionFlexBuild path, expand library 3.0.1.1739, and delete the playerglobal. SDK
Step 10: click on add SWC
Step 11:
View Step 2 new SDK installation path: Frameworks/libs/Player/10/playerglobal. SWC
Step 12:
Expand playerglobal. SWC and double-click link type. Change it to external.
Step 13:
Modify the followingCode:
Finally, open the new project root file and useFlash Player10. Create a new object. It's very clear.