appcompat_v7: Error retrieving parent for item: No resource found that matches the given name

Question

I am trying to build the Android project that uses appcompat_v7 library.

For that, I created my project through Eclipse -> New Android Sample Project and added my cu

Answer 1

1. Right Click on the supporting library;
2. Click on Properties;
3. On the left side click on "Android";
4. Select the right "Android 5.0 - API 21" and click OK;
5. Clean the support library: Project -> Clean;

Repeat the above steps for your project.