I have updated my android SDK with Android 5.0 (API 21); I have also updated Platform tools and Build tools.

I am getting The following classes could not be found: - android.support.v7.widget.RecyclerView (Fix Build Path, Edit XML, Create Class) error after adding RecycleView in layout xml file.

My layout xml file looks like follows:

can anyone tell me what's going wrong. Why I am getting this error, even after downloading complete set of software (new SDK, build tools, platform tools etc)

Note: I am using eclipse IDE