Question

I want to create an application that doesn’t use Portrait mode.

I am not sure if I need to edit the plist or have code in addition to the plist

Answer 1

Code found here

Launching in Landscape Mode

Applications in iPhone OS normally
launch in portrait mode to match the
orientation of the Home screen. If you
have an application that runs in both
portrait and landscape modes, your
application should always launch in
portrait mode initially and then let
its view controllers rotate the
interface as needed based on the
device’s orientation. If your
application runs in landscape mode
only, however, you must perform the
following steps to make it launch in a
landscape orientation initially.

• In your application’s Info.plist file, add the UIInterfaceOrientation
  key and set its value to the
  landscape mode. For landscape
  orientations, you can set the value
  of this key to
  UIInterfaceOrientationLandscapeLeft
  or
  UIInterfaceOrientationLandscapeRight.

• Lay out your views in landscape mode and make sure that their
  autoresizing options are set
  correctly.

• Override your view controller’s shouldAutorotateToInterfaceOrientation:
  method and return YES only for the
  desired landscape orientation and NO
  for portrait orientations.