UITabBarController演示模式AutoRotate问题

Question

我有UITabBarController的SubClass来处理旋转问题：

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

-(NSUInteger)supportedInterfaceOrientations{
    return [self.selectedViewController supportedInterfaceOrientations];
}

-(BOOL)shouldAutorotate{
    return YES;
}

现在，我从tabbatcontroller中的一个UIViewController展示一个新的UIViewController

MainVC *mainVC = [[MainVC alloc] initWithNibName:@"MainVC" bundle:nil];
UINavigationController *mainNav = [[UINavigationController alloc] initWithRootViewController:mainVC];

radioNav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:mainNav animated:YES];

在这个新的导航中，我想禁用自动旋转，只允许纵向旋转：

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
    return NO;
}

-(NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait;
}

-(BOOL)shouldAutorotate{
    return NO;
}

但是旋转仍然有效，当我旋转屏幕时，应用程序转到横向屏幕，我如何解决这个问题？

Answer 1

您还应该创建UINavigationController的子类，并将以下代码放在子类中：

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // You do not need this method if you are not supporting earlier iOS Versions
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

-(BOOL)shouldAutorotate
{
    return NO;
}

然后，初始化一个子类的实例：

MainVC *mainVC = [[MainVC alloc] initWithNibName:@"MainVC" bundle:nil];
MYSubclassedNavigationController *mainNav = [[MYSubclassedNavigationController alloc] initWithRootViewController:mainVC];

radioNav.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:mainNav animated:YES];