Question

我试图按照方法在我的观点上强制横向显示：

- (NSUInteger)supportedInterfaceOrientations {
    return UIInterfaceOrientationMaskLandscape;
}

- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationLandscapeLeft;
}

- (BOOL)shouldAutorotate{
    return YES;
}

两者都没有奏效。请注意，我正在模拟器和iPad上进行测试。

由于

Answer 1

以下是我使用NavigationViewController将我的一个视图强制为Landscape的方法：

实现了这个答案：https://stackoverflow.com/a/12662433/2394787
View控制器中的导入消息：objc / message.h
在viewDidLoad方法中添加了以下代码：

objc_msgSend（[UIDevice currentDevice]，@ selector（setOrientation :)，UIInterfaceOrientationLandscapeLeft）;

希望它有所帮助。

Answer 2

接受的答案似乎不适用于iOS 7.1.2。（它在模拟器上工作，但在设备上运行时不起作用。）

这似乎有效：

[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIInterfaceOrientationPortrait] forKey:@"orientation"];

[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger:UIInterfaceOrientationLandscapeLeft] forKey:@"orientation"];

Answer 3

int shouldShowInLandscape = 0;

-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {


    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(forceToLandscape:)
                                                 name:@"yourNameNotification"
                                               object:nil];

}

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

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
    {
              return UIInterfaceOrientationMaskLandscapeLeft;
    } else {
            if(shouldShowInLandscape)
            {
                return UIInterfaceOrientationMaskLandscape;
            }
            return UIInterfaceOrientationMaskPortrait;
    }
}

-(void) forceToLandscape:(NSNotification*) theNot
{
    shouldShowInLandscape = [[theNot object] intValue];

}

//来自UIViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    [[NSNotificationCenter defaultCenter]
     postNotificationName:@"yourNameNotification"
     object:[NSString stringWithFormat:@"1"]];
}

-(void) viewDidDisappear:(BOOL)animated
{

        [[NSNotificationCenter defaultCenter]
     postNotificationName:@"yourNameNotification"
     object:[NSString stringWithFormat:@"0"]]; 

}

//删除notificationCenter

力量景观ios 7

3 个答案: