presentViewController不支持iOS 6中的方向

Question

我正在使用此代码

if ([self respondsToSelector:@selector(presentViewController:animated:completion:)])
    {
        [self presentViewController:navigationControllerCustom animated:YES completion:nil];
    }
    else
    {
        [self presentModalViewController:navigationControllerCustom animated:YES];
    }

我的应用程序有两个方向纵向和纵向颠倒.此代码适用于iOS 5.1,但方向在iOS 6上不起作用

我也在navigationControllerCustom课上添加了这段代码

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

-(NSUInteger)supportedInterfaceOrientations
{
    return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown);
}

请帮我解决这个问题.

提前致谢.

Answer 1

您必须将此包含在您的应用程序委托中:

- (NSUInteger)application:(UIApplication *)application supportedInterfaceOrientationsForWindow:(UIWindow *)window{
    return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
}

还要确保View Controller都具有以下功能,对我来说工作正常.

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

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
}

该文档还说,UINavigationController's它不会查询其顶级View Controller支持的方向,尽管开发者论坛上的苹果工程师确实这么说......似乎它没有.因此,您应该添加一个类别UINavigationController,这是我使用的类别:

#import "UINavigationController+autorotate.h"

@implementation UINavigationController (autorotate)

- (NSUInteger)supportedInterfaceOrientations{
    return UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskPortraitUpsideDown;
}

@end

有关AutoRotate如何在iOS 6上运行的更多信息,请查看此答案