解雇子项后，父UIViewController方向不应更改

Question

假设我有三个UI控制器（A，B，C）。

A是我的根控制器，在ShouldAutoRotate方法内，我返回YES。 我做了从A到B的礼物视图（B =＆gt;在ShouldAutoRotate方法中我返回肖像）然后从B我将presentModal转换为C（C应该能够旋转到任何方向）。

现在在C里面我能够将模拟器旋转到任何方向，整个视图旋转完美。这就是问题，当C是风景时我解雇它，B里面的所有物体都会变得混乱！同样的事情发生在A。

我只需要在C !!上进行旋转。

谢意。

Answer 1

在App代理

中

@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viewController A，B

中

- (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viewController C

中

- (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];
}

希望这能解决您的问题

Answer 2

您需要允许来自项目信息的所有方向

然后覆盖实现所有这些方法以在每个视图控制器中定位iOS 6 +以启用和禁用方向。

supportedInterfaceOrientations

shouldAutorotate

shouldAutorotateToInterfaceOrientation

Answer 3

强制将C旋转为纵向，然后解除它

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