VideoPlayer

I'm writing a small Video application and ran into some issues. First of all in the "OnCreate" Event i create the videoplayer and Setup everything. So far it works great but have the following issues:

1. The Video is not shown in the middle of the Screen when i hold my phone vertically.
2. The Video doesn't fill the Screen when i hold my phone horizontally.
3. The Video re-starts each time i rotate my phone(probably because of the "OnCreate" Event?)

Here the code from the AXML file:

Also is there a way to avoid showing the app Name at the top of my application?? i haven't found a way to hide it or remove it since i want my application to cover the whole Screen without any Information at the top.

Hope someone can help me out.