我不知道如何在iOS 6中进行纵向和颠倒

Question

I am using:

- (NSUInteger)supportedInterfaceOrientations {

    return UIInterfaceOrientationMaskPortrait; 

}

How would I use this for Portrait and Upside down in iOS6?

this works for landscape left UIInterfaceOrientationMaskLandscapeLeft

and this for Landscape right UIInterfaceOrientationMaskLandscapeRight

and this for both landscapes UIInterfaceOrientationMaskLandscape

Answer 1

You need to return a valid bitmask of the orientations you wish to support:

For portrait and portrait upside down:

- (NSUInteger)supportedInterfaceOrientations {

    return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown);

}

You can see a list of the supported orientation masks

It's important to note also, that you need to list portrait upside down in your supported orientations as well:

Answer 2

You need to use the bitwise OR operator for each supported orientation.

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait |
        UIInterfaceOrientationMaskPortraitUpsideDown; 
}

Add another bitwise OR for each orientation you want to support. Typically, when you see a constant with the word "mask" in it, they are meant to be combined in this way.

Answer 3

I had me too the same problem here

Your should solve your problem too.

• allow the rotations
• at top components need to allow again

Watch carefully those methods, seems similar, but aren't