Implicit conversion from enumeration type 'UIInterfaceOrientation' to different enumeration type 'UIDeviceOrientation'

Question

I am getting the above compiler warning for the code below. I understand the difference between Interface and Device orientation, but am unsure how to amend to remove the warning. Can anyone help ?

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
if (ViewController != NULL) {
    [ViewController configureForDeviceOrientation:toInterfaceOrientation];
}
if (Controller != NULL) {
    [Controller configureForDeviceOrientation:toInterfaceOrientation];
}
currentOrientation = toInterfaceOrientation;
}

can you put method signature for **configureForDeviceOrientation** method — Rahul Sharma, Dec 07 '11 at 10:24
See also: http://stackoverflow.com/questions/7015709/xcode-getting-warning-implicit-conversion-from-enumeration-type-uideviceorient — Brian, Feb 11 '14 at 22:54

score 6 · Accepted Answer · answered Dec 07 '11 at 10:26

6

just cast it [Controller configureForDeviceOrientation:(UIDeviceOrientation)toInterfaceOrientation];

answered Dec 07 '11 at 10:26

RolandasR

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26

Thanks - good idea and works well here as the same method is being used correctly elsewhere. – GuybrushThreepwood Dec 07 '11 at 10:41
6

actually it considered "bad practice" :) – RolandasR Dec 07 '11 at 11:07
I tried the same as: `UIDeviceOrientation orientation = (UIDeviceOrientation)[[UIApplication sharedApplication] statusBarOrientation];` but a new warning: `Enumeration values 'UIDeviceOrientationUnknown', 'UIDeviceOrientationFaceUp', and 'UIDeviceOrientationFaceDown' not handled in switch` any escape? – geekay Feb 06 '12 at 17:00
I think there is no escape just one solution (work around) to have switch case to handle these 3 interfaceOrientations. Anyhow I don't need these three to be handled at all in this scenario. @Ohnomycoco it is indeed a bad practice. its a cul-de-sac but. – geekay Feb 06 '12 at 17:03

score 2 · Answer 2 · answered Dec 07 '11 at 10:26

Your method configureForDeviceOrientation: is expecting to be passed a UIDeviceOrientation enum and not a UIInterfaceOrientation which you are passing in.

If you correct your method to accept a UIInterfaceOrientation from the willRotateToInterfaceOrientation: method, then you'll resolve the issue.

Implicit conversion from enumeration type 'UIInterfaceOrientation' to different enumeration type 'UIDeviceOrientation'

2 Answers2