Hide or autohide top bar Is it possible to hide or autohide the top bar which is still present on the top of Android screen? My version of Android is 2.2. 

The top bar is distracting for me while reading. I'm using Aldiko, ezPDF Reader, Infinity for reading. Most distracting is the wifi icon which is changing when something happens with the connection.

And the top bar is using space on a small display which can be better utilized (e.g. in Teamviewer) 

Some video players can hide the top bar (default Video player) and some can't (Act1 Video player - which I like more but don't use because of the top bar).

Thank you.
You can hide the top bar if you use a different launcher like @CustomiZer stated, but it will Only hide it when you are on the home screen. When you open apps, if they are not Full Screen apps, the top bar will still be present.

This is part of "core" android, and it is not something that can be changed, currently, via a setting or 3rd party application.