title: Eclipse and Android ADT error on the first app created in setContentView(R.layout.activity_main)
body: <p>I have no word. How is possible that Google permit a thing like this?!?!
  I've read a thousand of documentation before to download Eclipse + Android ADT.
  After installation, like every time I made an installation of a new development system, I try to write the simple app: "hallo world".
  How is possible that a simply stuff like "hallo world" don't goes?!?</p>
  
  <p>First the error on "R"... that brings the error "cannot be resolved to a variable".
  The fix is to add: </p>
  
  <pre><code>import android.R;
  </code></pre>
  
  <p>Ok... was easy. One minute on Stackoverflow and the solution is served.
  Then..... BANG... immediatly the second error: </p>
  
  <ul>
  <li>setContentView(R.layout.activity_main);
  generates "activity_main cannot be resolved or is not a field"</li>
  <li>getMenuInflater().inflate(R.menu.main, menu);
  generates "main cannot be resolved or is not a field".</li>
  </ul>
  
  <p>At this point I've read many (too much)  post over this issue, but without to see the light...</p>
  
  <p>I repeat, is incredible that a system to develop app for the most widespread mobile operating system has errors at the first installation.....
  Sure will be my fault... </p>
  
  <p>Any suggestion is appreciated ? </p>