objective-c - 自动旋转 iOS 8 导航 Controller

Question

我有某些由UINavigationController(推送和弹出)管理的viewControllers。我想将不同的 viewControllers 限制为不同的 orientation，例如第一个应该仅在 Portrait 中，第二个在 portrait 中，landscape 中的第三个和第四个可以是 portrait 和 landscape 两者。我在 storyBoard 的 isInitialViewController 上设置了一个 ViewController，

- (BOOL) shouldAutorotate{
return NO;

}

工作没有任何问题，但是当我将导航 Controller (通过推送和弹出管理这四个 View )设置为storyBoard中的isInitialViewController时，该函数停止被调用，现在自动。如何使用此 UINavigationController 作为 isInitialViewController 停止自动旋转这些 View 。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

只需子类 UINavigationController 并重写适当的方法:

.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