Xcode: how to build a landscape only iphone program

Question

in Xcode, I tried to design a landscape only user interface.

I both set UIViewController and UIView controls to landscape model. but when I placed the controls, like

Answer 1

In project plist setup Initial interface orientation field in Landscape (left home button). Also setup Supported interface orientations field.

And override method -(BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation) interfaceOrientation in your ViewController:

- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{
    return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}