iOS 6 – 强制 UINavigationController 内的 UIViewController 旋转
<p><p>我有一个 <code>UINavigationController</code> 堆栈中的所有 <code>UIViewController</code> 都是纵向的，除了最后一个是横向的。我当前的实现在推送时以纵向显示最后一个 ViewController ，但我可以旋转到横向，并且不能旋转回纵向。 <strong>如何在 View 被推送时强制旋转为横向？</strong></p>
<p>我的 <code>UINavigationController</code> 子类:</p>
<pre><code>@interface RotationViewController : UINavigationController
@end
@implementation RotationViewController
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
if (self.topViewController.class == )
{
return UIInterfaceOrientationMaskLandscape;
}
return UIInterfaceOrientationMaskPortrait;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
if (self.topViewController.class == )
{
return UIInterfaceOrientationLandscapeLeft;
}
return UIInterfaceOrientationPortrait;
}
@end
</code></pre>
<p>我只想要横向的 ViewController :</p>
<pre><code>@implementation LoadingViewController
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscape;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return UIInterfaceOrientationLandscapeLeft;
}
@end
</code></pre>
<p>其他 ViewController 不实现这些方法中的任何一个。</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我也有同样的情况。所以你可以在你的应用程序中实现下面的代码</p>
<pre><code>- (void)viewDidAppear:(BOOL)animated
{
;
[ setStatusBarOrientation:UIInterfaceOrientationLandscapeLeft animated:NO];
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(270));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
[.view setTransform:landscapeTransform];
self.navigationController.view.bounds = CGRectMake(0.0, 0.0, 480, 320);
self.navigationController.navigationBar.frame = CGRectMake(0.0, 20.0, 480, 44.0);
}
-(void)viewWillDisappear:(BOOL)animated
{
;
[ setStatusBarOrientation:UIInterfaceOrientationPortrait animated:NO];
CGAffineTransform landscapeTransform = CGAffineTransformMakeRotation(degreesToRadian(0));
landscapeTransform = CGAffineTransformTranslate (landscapeTransform, 0.0, 0.0);
[.view setTransform:landscapeTransform];
self.navigationController.view.bounds = CGRectMake(0.0, 0.0, 320, 480);
self.navigationController.navigationBar.frame = CGRectMake(0.0, 20.0, 320.0, 44.0);
}
#define degreesToRadian(X) (M_PI * (X)/180.0)
</code></pre>
<p>注意:-</p>
<p><strong>以上代码是针对iphone实现的。因此，如果您将其用于 ipad，请更改边界。</strong></p>
<p>你不需要实现</p>
<pre><code>- (BOOL)shouldAutorotate
- (NSUInteger)supportedInterfaceOrientations
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
</code></pre>
<p> ViewController 中的函数....所以删除这些方法....</p></p>
<p style="font-size: 20px;">关于iOS 6 – 强制 UINavigationController 内的 UIViewController 旋转，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/15127645/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/15127645/
</a>
</p>
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