解除子级后，不应更改父级UIViewController方向

Question

假设我有三个UI控制器（A、B、C）。

A是我的根控制器，在ShouldAutoRotate方法中我返回YES。我确实将ModalView从A介绍给B（B=

现在在C中，我可以将模拟器旋转到任何方向，整个视图都可以完美旋转。这就是问题所在，当C是横向的，而我将其忽略时，B中的所有对象都将变得一团糟！！同样的事情也发生在A身上。

我只需要在C上旋转！！

免费。

Answer 1

强制旋转C到肖像，然后再关闭它

[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];

Answer 2

您需要允许项目信息中的所有方向

然后重写实现所有这些方法以在每个视图控制器中以iOS 6为目标，以启用和禁用方向。

supportedInterfaceOrientations

shouldAutorotate

shouldAutorotateToInterfaceOrientation

Answer 3

应用内代理

@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (nonatomic) BOOL shouldRotate;
@end

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    if (self.shouldRotate == YES) {
        return UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortrait;
    }
    return UIInterfaceOrientationMaskPortrait;
}

在视图中控制器A、B

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    ((AppDelegate *)[[UIApplication sharedApplication] delegate]).shouldRotate = NO;
    [self supportedInterfaceOrientations];

    [self shouldAutorotate:UIInterfaceOrientationPortrait];

    [[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

- (BOOL)shouldAutorotate:(UIInterfaceOrientation)interfaceOrientation{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait;
}

在视图控制器C

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    ((AppDelegate *)[[UIApplication sharedApplication] delegate]).shouldRotate = YES;

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}

- (BOOL)shouldAutorotate:(UIInterfaceOrientation)interfaceOrientation{
    return YES;

}

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait|UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight;
}

- (IBAction)closeVC:(id)sender {
    NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
    [[UIDevice currentDevice] setValue:value forKey:@"orientation"];
    AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
    appDelegate.shouldRotate = NO;

    [self supportedInterfaceOrientations];

    [self shouldAutorotate:UIInterfaceOrientationPortrait];

    [self dismissViewControllerAnimated:YES completion:nil];
}

希望这能解决你的问题