【iOS】ios6.0 UINavigationController支持屏幕自动旋转

问题描述:

当从页面A跳转到页面B时,使用的是UINavigationController的presentViewController:animated:completion:方法。如果页面A是纵向UI,而页面B则在xib配置中是横向UI,不论在B的viewController实现文件中如何设置,从A到B跳转后,B为纵向显示,无法受其控制。

 

原因:

猜测是因为presentViewController:animated:completion:时,旋转控制权在parentViewController上,B页面无法拿到控制权。

 

解决方案:

重写UINavigationController的旋转方法,使viewController能够拿到旋转权。

代码如下:

UINavigationController+Rotation_IOS6.h

@interface UINavigationController (Rotation_IOS6)

 -(BOOL)shouldAutorotate;
 -(NSUInteger)supportedInterfaceOrientations;
 -(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation;

 @end

UINavigationController+Rotation_IOS6.m

@implementation UINavigationController (Rotation_IOS6)
 -(BOOL)shouldAutorotate {
     return [[self.viewControllers lastObject] shouldAutorotate];
 }
 
 -(NSUInteger)supportedInterfaceOrientations {
     return [[self.viewControllers lastObject] supportedInterfaceOrientations];
 }
 
 - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
     return [[self.viewControllers lastObject] preferredInterfaceOrientationForPresentation];
 }
 @end
posted @ 2013-06-14 16:36  风倾清凌  阅读(2277)  评论(0编辑  收藏  举报