iOS 屏幕旋转控制

最新推荐文章于 2025-07-10 12:33:51 发布

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今天主要给大家讲一下在iOS开发中怎样控制屏幕的旋转。

在iOS6之前的版本中，我们经常用 shouldAutorotateToInterfaceOrientation: 方法来控制一个UIViewController的旋转方向支持，如：

<span style="font-size:18px;">- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}</span>

但是在iOS6.0中这个方法被废弃了。

<span style="font-size:18px;">// Applications should use supportedInterfaceOrientations and/or shouldAutorotate..
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation NS_DEPRECATED_IOS(2_0, 6_0) __TVOS_PROHIBITED;</span>

新的控制方式是通过两个方法一起来控制的

<span style="font-size:18px;">// New Autorotation support.
- (BOOL)shouldAutorotate NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
- (UIInterfaceOrientationMask)supportedInterfaceOrientations NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;
// Returns interface orientation masks.
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;</span>

通过实践得出结论，如果window的根视图是一个UINavigationController对象，对屏幕旋转方向的控制方法如下：

<span style="font-size:18px;">- (BOOL)shouldAutorotate  
{  
    return self.topViewController.shouldAutorotate;  
}  
  
- (NSUInteger)supportedInterfaceOrientations  
{  
    return self.topViewController.supportedInterfaceOrientations;  
}  </span>

然后在添加的UIViewController中添加一下代码控制屏幕的旋转（支持所有版本）

<span style="font-size:18px;">- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation  
{  
    return (interfaceOrientation == UIInterfaceOrientationPortrait);  
} 

- (BOOL)shouldAutorotate{
    return NO;
}

- (NSUInteger)supportedInterfaceOrientations{
     return UIInterfaceOrientationMaskPortrait;
}</span>

<span style="font-size:18px;">
</span>

<span style="font-size:18px;">
</span>

<span style="font-size:18px;">开启全部方向支持 </span>

<span style="font-size:18px;">- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation  
{  
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);  
}  
  
-(NSUInteger)supportedInterfaceOrientations  
{  
    return UIInterfaceOrientationMaskAllButUpsideDown;  
}  
  
-(BOOL)shouldAutorotate  
{  
    return YES;  
}  </span>