自动旋转 iOS 8 导航控制器

Question

我有某些viewControllers 由UINavigationController 管理（推送和弹出）。我想将不同的viewControllers 限制为不同的orientations，比如第一个应该只在Portrait，第二个在portrait，第三个在landscape，第四个可以是portrait 和landscape。我从storyBoard 在isInitialViewController 上设置了ViewController，

- (BOOL) shouldAutorotate{
return NO;

}

工作没有任何问题，但是当我从storyBoard 将navigation controller（通过推送和弹出管理这四个视图）设置为isInitialViewController 时，此函数停止被调用，现在autoratates。如何使用 UINavigationController 作为 isInitialViewController 停止 autorotating 这些视图。我使用以下函数取决于它是哪个ViewController

- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
return (interfaceOrientation == UIDeviceOrientationPortrait);//choose portrait or landscape}

- (BOOL) shouldAutorotate{
return NO;
}

- (NSUInteger)supportedInterfaceOrientations
{
//return UIInterfaceOrientationMaskLandscape;
return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{ 
//    return UIInterfaceOrientationLandscapeLeft |
//    UIInterfaceOrientationLandscapeRight;
return UIInterfaceOrientationPortrait;
}

Answer 1

只需继承 UINavigationController 并覆盖适当的方法：

.h 文件：

@interface CustomUINavigationController : UINavigationController
@property   BOOL canRotate;
@end

.m 文件：

@implementation CustomUINavigationController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}



- (NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}

- (BOOL)shouldAutorotate
{
    return self.canRotate;
}
@end

Answer 2

如果您为 UINavigation Controller 和 Override 界面方向方法创建 Objective C 类别会怎样...我想您尝试控制 Autorotation。

Objective C 类别 http://rypress.com/tutorials/objective-c/categories