UITabBarController Rotation Issues in ios 6

问题:

Ack! I had my tabbar rotation issues resolved finally in iOS 5, but iOS 6 and xcode seem to have broken things... here is what I have:

Target App Summary includes: Supported Interface Orientations - Portraint, Landscape Left, Landscape Right

Every Single View in the App has the following methods:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
    return ((interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown) &&
            (interfaceOrientation != UIInterfaceOrientationLandscapeLeft) &&
            (interfaceOrientation != UIInterfaceOrientationLandscapeRight));
} else {
    return YES;
}
}

- (BOOL)shouldAutorotate
{
NSLog(@"am I called1?");
return NO;
}

-(NSUInteger)supportedInterfaceOrientations{
   NSLog(@"am I called?");
   return UIInterfaceOrientationMaskPortrait;
}

In the views that are not part of the tab bar, rotation is blocked. In ALL the views of the tabbar (there are 5) the app never calls ShouldAutorotate and so rotates. It does seem supportedInterfaceOrientations gets called once when a view loads, but not when it appears if I switch between views, because I get the NSLog, but it seems to ignore the MaskPortrait setting.

I have to leave the landscape enabled in the target because I have a single video player view that needs to rotate (and it does so, fine)

Is this a tabbar bug in iOS 6? Do I need to disable the rotation of the views differently? The shouldautorotatetointerfaceorientation worked great in ios 5

I've been at it for a while

Thanks, Zack

回答1:

Zack, I ran into this same issue. It's because you have your viewController embedded inside of a TabBar Controller or UINavigationController and the calls to these methods are happening inside those instead of your normal View (Changed in iOS6).

I ran into this issue because I was presenting a viewController embedded inside a UINavigationController on all my modal views that had Navigation to different views (Signup Process, Login, etc).

My simple fix was to create a CATEGORY for UINavigationController that includes these two methods. I have shouldAutorotate returning NO anyway because I don't want my modal views rotating. Your fix may be this simple, give it a try. Hope it helps.

I created a category and named it autoRotate and selected theUINavigationController option. The M+H file are below.

#import "UINavigationController+autoRotate.h"

@implementation UINavigationController (autoRotate)

-(BOOL)shouldAutorotate {
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

@end

... and the category .h:

#import <UIKit/UIKit.h>

@interface UINavigationController (autoRotate)

-(BOOL)shouldAutorotate;
- (NSUInteger)supportedInterfaceOrientations;

@end

回答2:

If you have a tab bar like I did, the only thing you need to do is to add the following to your delegate .m file,

#import "AppDelegate.h"

//UITabBarController category to set the view rotations for ios 6
@implementation UITabBarController (Background)

-(BOOL)shouldAutorotate
{
    //I don't want to support auto rotate, but you can return any value you want here
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations {
    //I want to only support portrait mode
    return UIInterfaceOrientationMaskPortrait;
}

@end


/////here starts the implementation of the app delegate which is gonna be whatever you currently have on your .m delegate

@implementation AppDelegate

// delegate methods and other stuff

@end

回答3:

I also had the issue that I needed some views to rotate and others not with several Navigation Controllers. I did this by telling the NavigationController to look in the view controller. Here is what I did.

I create a UINavigationController class called RootNavigationController and designated that class as the Custom Class for the Navigation Controllers in storyboard. In the RootNavigationController.m I added the following methods;

- (BOOL)shouldAutorotate {

    return [self.visibleViewController shouldAutorotate];
}

- (NSUInteger)supportedInterfaceOrientations {
    return [self.visibleViewController supportedInterfaceOrientations];    
}

In each view controller .m file I also added the following methods.

- (BOOL)shouldAutorotate {
    //return yes or no
}

- (NSUInteger)supportedInterfaceOrientations{
    //return supported orientation masks
}

Doing this allows me to set orientation for each view in its view controller.

Worked for me anyway…

回答4:

My situation is:

• UITabBarController has 2 items: 2 Navigation controller
• UINavigationController1 withRootView: ViewController1
• UINavigationController2 withRootView: ViewController2.
• Now i want ViewController1 set shouldAutorotate:NO/maskPortrait and ViewController2 set shouldAutorotate/MaskAll.

So my implement: Create UITabBarController category and UINavigationCntroller category like

UITabBarController+autoRotate.h

@interface UITabBarController (autoRotate)

-(BOOL)shouldAutorotate;
- (NSUInteger)supportedInterfaceOrientations;

@end

UITabBarController+autoRotate.m

#import "UITabBarController+autoRotate.h"

@implementation UITabBarController (autoRotate)

- (BOOL)shouldAutorotate {
    return [self.selectedViewController shouldAutorotate];
}
- (NSUInteger)supportedInterfaceOrientations {
    return [self.selectedViewController supportedInterfaceOrientations];
}

@end

UINavigationController+autoRotate.h

@interface UINavigationController (autoRotate)

-(BOOL)shouldAutorotate;
- (NSUInteger)supportedInterfaceOrientations;

@end

UINavigationController+autoRotate.m

@implementation UINavigationController (autoRotate)

- (BOOL)shouldAutorotate {
    return [self.visibleViewController shouldAutorotate];
}

- (NSUInteger)supportedInterfaceOrientations {
    return [self.visibleViewController supportedInterfaceOrientations];
}

@end

UIViewController1.m

- (BOOL)shouldAutorotate {
    return NO;
}
- (NSUInteger)supportedInterfaceOrientations {
   return UIInterfaceOrientationMaskPortrait;;
}

UIViewController2.m

- (BOOL)shouldAutorotate {
   return YES;
}
- (NSUInteger)supportedInterfaceOrientations {
   return UIInterfaceOrientationMaskAll;
}

It worked like a charm!

回答5:

In my case, I had a navigation controller embedded within a UITabBarController, and what worked was creating a category like Kunani defined, but extendind UITabBarController instead of UINavigationController. It worked like a charm :)

#import "UINavigationController+autoRotate.h"

@implementation UINavigationController (autoRotate)

-(BOOL)shouldAutorotate {
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskPortrait;
}

@end

And .h file:

#import <UIKit/UIKit.h>

@interface UINavigationController (autoRotate)

-(BOOL)shouldAutorotate;
- (NSUInteger)supportedInterfaceOrientations;

@end

回答6:

This will do it in Swift

extension UITabBarController {
    public override func shouldAutorotate() -> Bool {
        if let selected = self.selectedViewController {
            return selected.shouldAutorotate()
        } else {
            return false
        }
    }

    public override func supportedInterfaceOrientations() -> Int {
        if let selected = self.selectedViewController {
            return selected.supportedInterfaceOrientations()
        } else {
            return Int(UIInterfaceOrientationMask.Portrait.rawValue)
        }
    }
}

extension UINavigationController {
    public override func shouldAutorotate() -> Bool {
        return self.visibleViewController.shouldAutorotate()
    }

    public override func supportedInterfaceOrientations() -> Int {
        return self.visibleViewController.supportedInterfaceOrientations()
    }
}

回答7:

https://stackoverflow.com/a/30632505/2298002

there are a lot of ambiguous or unforeseen results when handling this situation, especially when it comes to maintaining the orientation for only a specific view controller and not effecting the rest of the app. this algorithm seems to hand all for me

https://stackoverflow.com/a/30632505/2298002

回答8:

You should add this thing in the UIViewController1.m to make sure that the previous orientation status is reconstructed:

 (void)viewDidAppear:(BOOL)animated 
{

    [[UIDevice currentDevice] performSelector:NSSelectorFromString(@"setOrientation:") 
    withObject:(id)UIInterfaceOrientationPortrait];
}

Perfect!