7

我有 2 个视图控制器。我希望第一个视图控制器仅是纵向模式，而第二个视图控制器应该支持所有方向。请帮我。

在 AppDelegate 类中，我的代码是：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    UINavigationController * navController = [[UINavigationController alloc] initWithRootViewController:self.viewController];
    self.window.rootViewController = self.viewController;
  //  [self.window addSubview:navController.view];
    [self.window makeKeyAndVisible];   
    return YES;
}
- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    NSLog(@"supportedInterfaceOrientationsForWindow");
    return  UIInterfaceOrientationMaskAllButUpsideDown;
}

第一个 ViewController 代码是：

-(BOOL)shouldAutorotate
{
    return NO;
}


-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}
// Tell the system which initial orientation we want to have
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationMaskPortrait;
}

第二个 ViewController 代码是：

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAllButUpsideDown;
}

-(BOOL)shouldAutorotate
{
    return YES;
}

// Tell the system which initial orientation we want to have
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationMaskAllButUpsideDown;
}

我检查的是第一个和第二个 ViewController 没有调用“shouldAutorotate”方法。

您的快速帮助将非常可观。谢谢。卡希夫

4

3 回答 3

8

尝试为第二个 UIViewController 设置supportedInterfaceOrientations，如下所示：

- (BOOL) shouldAutorotate
{
    return YES;
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskLandscapeRight; // add any other you want
}

此外，在第一个 UIViewController 中以相同的方法仅启用肖像。

也许您还需要在第二个 UIViewController 需要支持的项目设置中启用这些方向。

[编辑#1：添加示例应用程序]

在这里，您可以使用示例应用程序来解决您的问题，希望如此。

AppDelegate.h

#import <UIKit/UIKit.h>

@class FirstViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) FirstViewController *viewController;

@end

AppDelegate.m

#import "AppDelegate.h"

#import "FirstViewController.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    self.viewController = [[FirstViewController alloc] initWithNibName:@"FirstViewController" bundle:nil];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application
{
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
}

- (void)applicationWillEnterForeground:(UIApplication *)application
{
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

- (void)applicationWillTerminate:(UIApplication *)application
{
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
}

@end

第一视图控制器.h

#import <UIKit/UIKit.h>

@interface FirstViewController : UIViewController

- (IBAction)goToSecondViewController:(id)sender;

@end

第一视图控制器.m

#import "FirstViewController.h"
#import "SecondViewController.h"

@interface FirstViewController ()

@end

@implementation FirstViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self)
    {
        // Custom initialization
    }

    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

-(BOOL)shouldAutorotate
{
    return NO;
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAll;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationMaskPortrait;
}

- (IBAction)goToSecondViewController:(id)sender
{
    SecondViewController *svc = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
    [self presentViewController:svc animated:NO completion:nil];
}

@end

SecondViewController.h

#import <UIKit/UIKit.h>

@interface SecondViewController : UIViewController

- (IBAction)goToFirstViewController:(id)sender;

@end

第二视图控制器.m

#import "SecondViewController.h"

@interface SecondViewController ()

@end

@implementation SecondViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

    if (self)
    {
        // Custom initialization
    }

    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAll;
}

-(BOOL)shouldAutorotate
{
    return YES;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeLeft;
}

- (IBAction)goToFirstViewController:(id)sender
{
    [self dismissViewControllerAnimated:NO completion:nil];
}

@end

FirstViewController.xib

FirstViewController.xib

SecondViewController.xib

SecondViewController.xib

于 2012-09-20T07:48:49.213 回答
2

根据您的描述，第一个视图控制器被推入导航控制器。shouldAutorotate您对and的方法定义supportedInterfaceOrientations是绝对正确的。在方向更改期间，您的导航控制器的 shouldRotate 只会触发并且不会触发您的第一个视图控制器（导航控制器的子级） shouldAutorotate。所以你必须category在你的视图控制器或单独的文件中导航控制器并在需要的地方导入它。UINavigation Controller 类别的代码如下。

.h 文件有这个代码

    @interface UINavigationController (autoRotate)

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

@end

.m 文件有这个代码

  #import "UINavigationController+autoRotate.h"

@implementation UINavigationController (autoRotate)

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

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

如果您在单独的文件中编写类别，则必须在您的第一个和第二个视图控制器中导入 .h 文件作为#import "UINavigationController+autoRotate"

于 2013-03-29T06:36:25.670 回答
0

一个简单的解决方案：

实施 ：- (NSUInteger)supportedInterfaceOrientations

当从 AppDelegate.m 询问时

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window

有关更多详细信息，请参见此处： iOS 6 横向和纵​​向

于 2013-02-05T09:56:13.590 回答