ios - preferredInterfaceOrientationForPresentation 没有被调用

Question

我有一个场景，其中我有一个带有 5 个选项卡的 UITabbarController。每个选项卡都包含一个 UINavigationController。

现在在 UINavigationController rootViewController 之一中，当我选择一个选项时，将推送另一个 View Controller 。现在我希望另一个 View Controller 只是风景。

以下是我的 UITabBarController 和 UINavigationController 类的 Orientation 代码

@implementation UITabBarController (rotation)

-(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 if(DEVICE_IS_IPAD)
        return UIInterfaceOrientationMaskAll;
    else
        return UIInterfaceOrientationMaskPortrait;
}

-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    if ([self.selectedViewController respondsToSelector:@selector(supportedInterfaceOrientations)]) {
        return [self.selectedViewController preferredInterfaceOrientationForPresentation];
    }
    return 0;
}

@end

@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;
}

-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    if ([self.topViewController respondsToSelector:@selector(supportedInterfaceOrientations)]) {
        return [self.topViewController preferredInterfaceOrientationForPresentation];
    }
    return UIInterfaceOrientationPortrait | UIInterfaceOrientationLandscapeLeft | UIInterfaceOrientationLandscapeRight | UIInterfaceOrientationPortraitUpsideDown;
}
@end

我只想成为 Landscape 的 ViewController 的代码是:

-(BOOL)shouldAutorotate
{
    return YES;
}

-(NSUInteger)supportedInterfaceOrientations
{
    if(DEVICE_IS_IPAD)
        return UIInterfaceOrientationMaskLandscape;
    else
        return UIInterfaceOrientationMaskPortrait;
}

-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
    return UIInterfaceOrientationLandscapeLeft;
}

主要问题是 preferredInterfaceOrientationForPresentation 根本没有为 UITabbarController 或 UINavigationBarController 甚至我想显示的 View Controller 调用。

你能告诉我我做错了什么吗？

谢谢。

Answer 1

您可能忘记将supportedInterfaceOrientationsForWindow 添加到您的 AppDelegate 中？

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    return  UIInterfaceOrientationMaskAll;
}