无法停止设备旋转

Question

我已经发布了一个问题here。其中一位哥们回答并给出了解决方案。尽管该解决方案适用于少数视图控制器，但在视图中它不起作用。当我在选项卡栏项上输入具有 TabController + 导航控制器的视图控制器时，代码不起作用。并且视图可以旋转。

我在 iOS 6.1 中使用了以下代码

//For iOS6
- (BOOL)shouldAutorotate {
    return NO;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationPortrait;
}
- (NSUInteger)supportedInterfaceOrientations {
   return UIInterfaceOrientationMaskPortrait;
}

我也必须在 iOS 7 中实现相同的功能。 请帮忙

Answer 1

shouldAutorotate, supportedInterfaceOrientations, preferredInterfaceOrientationForPresentation

如果上述方法在navigationcontroller 的任何tabbarcontroller 内，则不会调用viewcontroller。如果这些方法在 tabbarcontroller 或导航控制器中声明，那么它们将被调用。

为了解决这个问题，创建一个类FixedOrientationTab，它是UITabBarController 的子类，导航类OrientationEnabledNavigation，它是UINavigationController 的子类。然后在FixedOrientationTab和OrientationEnabledNavigation内部实现shouldAutorotate, supportedInterfaceOrientations, preferredInterfaceOrientationForPresentation方法。

OrientationEnabledNavigation.h

#import <UIKit/UIKit.h>

@interface OrientationEnabledNavigation : UINavigationController

@end

OrientationEnabledNavigation.m

#import "OrientationEnabledNavigation.h"

@interface OrientationEnabledNavigation ()

@end

@implementation OrientationEnabledNavigation

- (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.
}

- (BOOL)shouldAutorotate
{
    return [self.topViewController shouldAutorotate];
//    return NO;
}

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

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.topViewController preferredInterfaceOrientationForPresentation];
}

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

@end

FixedOrientationTab.h

#import <UIKit/UIKit.h>

@interface FixedOrientationTab : UITabBarController

@end

FixedOrientationTab.m

#import "FixedOrientationTab.h"

@interface FixedOrientationTab ()

@end

@implementation FixedOrientationTab

- (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.
}

- (BOOL)shouldAutorotate
{
    return [self.selectedViewController shouldAutorotate];
    //    return NO;
}

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

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return [self.selectedViewController preferredInterfaceOrientationForPresentation];
}


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

@end

如果您想在项目中使用导航控制器，请使用OrientationEnabledNavigation 和标签栏FixedOrientationTab。之后，如果您在 viewcontroller 中实现 shouldAutorotate, supportedInterfaceOrientations, preferredInterfaceOrientationForPresentation 这些方法，那么它们将被调用。

希望这会有所帮助.. :)

编辑 正如 Jeev 指出的另一种方法是在您的应用程序委托的开头添加一些代码：

对于UITabBarController

@implementation UITabBarController (AutoRotationForwarding)

-(BOOL)shouldAutorotate
{
    if ([self.selectedViewController respondsToSelector:@selector(shouldAutorotate)]) {
        return [self.selectedViewController shouldAutorotate];
    }
    else {
        return YES;
    }
}

- (NSUInteger)supportedInterfaceOrientations {
    if ([self.selectedViewController respondsToSelector:@selector(supportedInterfaceOrientations)]) {
        return [self.selectedViewController supportedInterfaceOrientations];
    }
    else {
        return UIInterfaceOrientationMaskAll;
    }
}

@end

对于UINavigationController

@implementation UINavigationController (AutoRotationForwarding)

-(BOOL)shouldAutorotate
{
    if ([self.topViewController respondsToSelector:@selector(shouldAutorotate)]) {
        return [self.topViewController shouldAutorotate];
    }
    else {
        return YES;
    }
}

-(NSUInteger) supportedInterfaceOrientations {
    if([self.topViewController respondsToSelector:@selector(supportedInterfaceOrientations)])
    {
        return [self.topViewController supportedInterfaceOrientations];
    }
    return UIInterfaceOrientationMaskPortrait;
}

@end

Answer 2

我有 UINavigationController 包含 UIViewController。

您应该通过子类 UINavigationController 禁用 UINavigationController 中的旋转并实现

- (BOOL)shouldAutorotate
{
return YES;
}

- (NSUInteger)supportedInterfaceOrientations
{
// return some
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation
{
// return some thing that you want
}

希望对你有所帮助。

Answer 3

由于我使用的是 TabBarController，我得到的唯一可行的解​​决方案是创建一个类别。

所以只需创建一个类别

这是该类别的 .h 类，我将其命名为 AutoRotationtab

#import <UIKit/UIKit.h>
#import "AppDelegate.h"

@interface UITabBarController (AutoRotationTab)

@end

这是该类别的 .m 类

#import "UITabBarController+AutoRotationTab.h"

@implementation UITabBarController (AutoRotationTab)

-(BOOL)shouldAutorotate
{
if(globalvariable_shouldRotate)
{
    return YES;
}
else
{
    return NO;
}
}


- (NSUInteger)supportedInterfaceOrientations
{

if(globalvariable_shouldRotate)
{
    return UIInterfaceOrientationMaskAll;
}
else
{
    return UIInterfaceOrientationMaskPortrait;
}
}

只要创建这个类别，看看魔法，它就起作用了