设备方向

Question

I dont know why the device orientation doesn't work.

In the project properties:

In my code I have:

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

I probe it in my iphone and doesn't change.

Is something missing?

Thank you in advance

Edited (info.plist)

Answer 1

Open your info.plist file in XCode and add a line - Supported interface orientation of type array.

Hit the plus button next to it and list all orientations you want to use. You can set different settings for iPhone and iPad .

Answer 2

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

return NO;

}

Answer 3

Where in your code is shouldAutorotateToInterfaceOrientation: implemented? It should be a method of each and every subclass of UIViewController .

Try making sure that it's working by putting a log statement or breakpoint in shouldAutorotateToInterfaceOrientation: . If it's not being called, a view controller somewhere else is deciding your valid orientations for you.