Ios 6 horizontal and vertical screen Conversion

The root controller of the program uses UINavigationController. The following code is used:

1. Add code to appdelegate:

-(NSUInteger) application :( UIApplication *) application supportedInterfaceOrientationsForWindow :( UIWindow *) window

{

Return UIInterfaceOrientationMaskAll;

}

2. Add a category to UINavigationController and add the following code to the implementation file:

-(BOOL) shouldAutorotate

{

Return [[self topViewController] shouldAutorotate];

}

 

-(NSUInteger) supportedInterfaceOrientations

{

Return [[self topViewController] supportedInterfaceOrientations];

}

 

-(UIInterfaceOrientation) preferredInterfaceOrientationForPresentation

{

Return [[self topViewController] preferredInterfaceOrientationForPresentation];

}

3. Add a horizontal screen (you can change the direction of the portrait screen ):

-(NSUInteger) supportedInterfaceOrientations {

Return UIInterfaceOrientationMaskLandscapeRight; // you can change it to any direction.

}

-(BOOL) shouldAutorotate {

Return YES;

}

 

-(BOOL) shouldAutorotateToInterfaceOrientation :( UIInterfaceOrientation) interfaceOrientation {

Return interfaceOrientation = UIInterfaceOrientationLandscapeRight;

}

4. The most important thing is that the navigation controller cannot be used for switching between pages. You must use:

[Self presentViewController: navigationController animated: YES completion: Nil];