xcode 在 iPhone 上将方向设置为纵向
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Set Orientation to Portrait on iPhone
提问by 109221793
I have an application that consists of a login, 3 tables, and then an image.
我有一个应用程序，它由一个登录名、3 个表和一个图像组成。
You can rotate the image to landscape mode but what I want to be able to do is when the 'back' button is pushed and the app returns to the previous screen, I was the app to automatically rotate to give a portrait view.
您可以将图像旋转到横向模式，但我想要做的是当“后退”按钮被按下并且应用程序返回到前一个屏幕时，我是一个自动旋转以提供纵向视图的应用程序。
Is there any way of doing this?
有没有办法做到这一点？
采纳答案by tc.
If the previous view controller only supports portrait (see shouldAutorotateToInterfaceOrientation:) then it should automatically rotate.
如果之前的视图控制器只支持纵向（参见shouldAutorotateToInterfaceOrientation:），那么它应该自动旋转。
If the previous view controller supports landscape but you want it to rotate to portrait if it was originally in portrait, you can probably force it by changing what shouldAutorotateToInterfaceOrientation:returns when navigating back. I wouldn't recommend this; it's inconsistent UI (and it's a bit tedious to figure out what navigation is going on).
如果以前的视图控制器支持横向，但如果它最初是纵向的，您希望它旋转为纵向，则可以通过更改shouldAutorotateToInterfaceOrientation:导航返回时返回的内容来强制它。我不会推荐这个；它是不一致的用户界面（并且弄清楚正在发生的导航有点乏味）。
There are various ways to set the view controller interface orientation (-[UIDevice setOrientation:]will attempt to trigger an autorotation), but then you're into the realm of private APIs and potential rejection.
有多种方法可以设置视图控制器界面方向（-[UIDevice setOrientation:]将尝试触发自动旋转），但是您将进入私有 API 和潜在拒绝的领域。
回答by iutinvg
For previous controller:
对于以前的控制器：
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
if (UIInterfaceOrientationIsPortrait(toInterfaceOrientation)) {
return YES;
}
return NO;}
回答by klaaspieter
Override shouldAutorotateToInterfaceOrientation:in your table view controller and only return the orientation you want.
shouldAutorotateToInterfaceOrientation:在您的表视图控制器中覆盖并仅返回您想要的方向。
This might not actually switch back the orientation, so if this alone doesn't work you might have to call setStatusBarOrientation:animated:on UIApplicationin your table view controller's viewWillAppear:or viewDidAppear:methods.
这可能不是真正切换回方向，因此，如果仅此不工作，你可能会要求setStatusBarOrientation:animated:对UIApplication您的表视图控制器viewWillAppear:或viewDidAppear:方法。
