Try this:
Import support library as a project from
"sdk/extras/android/support/v7/appcompat"
.Reference library in your project (for Eclipse,
"Properties - Android - Add"
).- Build projects (for Eclipse,
"Projects - Build All"
). Make sure, you have"android.support.v7.appcompat"
in your main project gen folder.
If it still doesn't solve your problem, restart eclipse.
then clean and rebuild project
If the problem persists, remove the support library from you computer and redownload it and follow above mentioned steps.