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?!?

First the error on "R"... that brings the error "cannot be resolved to a variable".
The fix is to add: 

```
import android.R;

```

Ok... was easy. One minute on Stackoverflow and the solution is served.
Then..... BANG... immediatly the second error: 

* setContentView(R.layout.activity\_main);
generates "activity\_main cannot be resolved or is not a field"
* getMenuInflater().inflate(R.menu.main, menu);
generates "main cannot be resolved or is not a field".

At this point I've read many (too much) post over this issue, but without to see the light...

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... 

Any suggestion is appreciated ?