iOS6的旋屏控制技巧

在iOS5.1 和 之前的版本中, 我们通常利用 shouldAutorotateToInterfaceOrientation: 来单独控制某个UIViewController的旋屏方向支持,比如:

 

 

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



 

但是在iOS6中,这个方法被废弃了,使用无效。

 

shouldAutorotateToInterfaceOrientation:

Returns a Boolean value indicating whether the view controller supports the specified orientation. (Deprecated in iOS 6.0. Override the supportedInterfaceOrientations andpreferredInterfaceOrientationForPresentation methods instead.)

 

 

实践后会发现,通过supportedInterfaceOrientations的单独控制是无法锁定屏幕的。

 

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}



 

多次实验后总结出控制屏幕旋转支持方向的方法如下:

子类化UINavigationController,增加方法

 

 

- (BOOL)shouldAutorotate
{
    return self.topViewController.shouldAutorotate;
}

- (NSUInteger)supportedInterfaceOrientations
{
    return self.topViewController.supportedInterfaceOrientations;
}


并且设定其为程序入口,或指定为 self.window.rootViewController

 

随后添加自己的view controller,如果想禁止某个view controller的旋屏:(支持全部版本的控制)

 

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

-(BOOL)shouldAutorotate
{
    return NO;
}

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskPortrait;
}

 

 

如果想又开启某个view controller的全部方向旋屏支持:

 

 

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

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationMaskAllButUpsideDown;
}

-(BOOL)shouldAutorotate
{
    return YES;
}



从而实现了对每个view controller的单独控制。

 


顺便提一下,如果整个应用所有view controller都不支持旋屏,那么干脆:

 

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

posted on 2014-12-01 10:42  Jason_Luo  阅读(130)  评论(0)    收藏  举报

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