So, how I solved this problem:
- 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 doesn’t worked – clean and rebuild project.