Question

在我的项目中，我只允许纵向旋转，但对于一个ViewController，我想启用横向。我将此ViewController呈现为ModalViewController，我尝试使用方法- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation或iOS 6方法，例如-(NSUInteger) supportedInterfaceOrientations，但实际上没有任何效果。虽然这些方法被调用，但视图没有旋转。

在此之后，我试图通过听取这些通知来调整myslef：

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(didRotate:)
                                             name:UIDeviceOrientationDidChangeNotification
                                           object:nil];

但即使我能够在方法view中手动旋转didRotate：它非常混乱，我无法旋转StatusBar。

我真的很想使用像shouldAutorotateToInterfaceOrientation这样的标准方法，但我不知道怎么做。任何人吗？

Answer 1

在appate delegate.m

中添加此内容

# pragma mark - Rotation

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window
{
    if ([self.window.rootViewController isKindOfClass:[MVYSideMenuController class]]) {

        // Get topmost/visible view controller
        UIViewController *currentViewController = [self.window.rootViewController.childViewControllers lastObject];
        // Check whether it implements a dummy methods called canRotate
        if ([currentViewController respondsToSelector:@selector(canRotate)]) {
            // Unlock landscape view orientations for this view controller
            return UIInterfaceOrientationMaskAllButUpsideDown;
        }
    }

    // Only allow portrait (standard behaviour)
    return UIInterfaceOrientationMaskPortrait;
}
-(void)canRotate
{
}

然后添加此方法

-(void)canRotate
{
    // just define the method, no code required here
}

在每个要提供旋转的ViewController（.m文件）中。您还可以在此处使用-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation方法在设备旋转时做出反应：

-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
    switch (orientation) {
        case 1:
        case 2:
            //NSLog(@"portrait");
            break;

        case 3:
        case 4:
            //NSLog(@"landscape");
            break;
        default:
            //NSLog(@"other");
            break;
    }
}

Answer 2

为需要旋转的屏幕子类化导航控制器。

在.m

// Older versions of iOS (deprecated) if supporting iOS < 5
 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation    {
return UIInterfaceOrientationIsLandscape(toInterfaceOrientation);
}

// iOS6
 - (BOOL)shouldAutorotate {
return YES;
 }

 // iOS6
 - (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskLandscape;
}

这将覆盖iOS 6摘要页面中设置的旋转方法。

在iOS 6中，视图控制器仅查找父级或根控制器的旋转方法

Answer 3

你只能在viewDidLoad和viewWillAppear中调用shouldAutoRotateToInterfaceOrientation，如下所示：

[self shouldAutorotateToInterfaceOrientation];

应该在ViewController中调用方法

Answer 4

enter image description here

实现在所有控制器中并返回特定控制器所需的interfaceOrientation

For All

- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) interfaceOrientation{

 return YES;
}

景观

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return ((interfaceOrientation == UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight));
}

For Portrait

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return ((interfaceOrientation == UIInterfaceOrientationPortrait) || (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown));
}

仅允许在一个视图控制器上进行自动旋转

4 个答案: