title: cannot resolve symbol "ActionBarActivity" in android studio 2.1.1
body: <p>I am starting development of android apps so i downloaded android studio so, when i imported ActionBarActivity class from the source of android it's giving me error 
  like this:-</p>
  
  <p>Please check the error here:</p>
  
  <p><img src="https://i.stack.imgur.com/qkpeI.jpg" alt="please check the error here"></p>
  
  <p>I have tried many things like changing the path and everything but nothing works here is the image of my installed SDKs in android studio:-</p>
  
  <p>Please check the SDK tools here:</p>
  
  <p><img src="https://i.stack.imgur.com/9gRsJ.png" alt="please check the SDK tools here"></p>
  
  <p>Please help me if anyone knows what to do about this error</p>