xcode 如何仅在纵向设置方向？
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how to set orientation in Portrait only?
提问by Devin
I want to set UIViewController in Portrait, I tried to add
我想在人像中设置 UIViewController，我尝试添加
- (UIInterfaceOrientation) preferredInterfaceOrientationForPresentation {
return UIInterfaceOrientationPortrait;
}
- (UIInterfaceOrientationMask)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskPortrait;
}
- (BOOL)shouldAutorotate {
return [UIApplication sharedApplication].statusBarOrientation != UIDeviceOrientationPortrait;
}
But when I take my phone in Landscape, then enter this UIViewController,
但是当我在横向拿我的手机时，然后输入这个 UIViewController，
I will run into Landscape first, then rotate to portrait!
我会先遇到横向，然后旋转到纵向！
but I don't want it shows landscape, I want it show portrait immediate,
但我不希望它显示风景，我希望它立即显示肖像，
Is there any wrong setting?
有什么错误设置吗？
EDIT
编辑
I called the error ViewController "vcA", it present from "vcB"
我将错误视图控制器称为“vcA”，它来自“vcB”
in vcB's viewDidAppear, I called
在 vcB 中viewDidAppear，我打电话给
[self presentViewController:vc animated:NO completion:nil];
[self presentViewController:vc animated:NO completion:nil];
then vcA will show in landscape(if vcB was in landscape),
然后 vcA 将显示为横向（如果 vcB 为横向），
if add a few delay like:
如果添加一些延迟，例如：
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(.5 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
[self presentViewController:vc animated:NO completion:nil];
});
it will show portrait, but I do not know why it happen!
它会显示肖像，但我不知道为什么会这样！
ANSWER
回答
Finally, I found root cause!
终于，我找到了根本原因！
when I launch app, it stay in Portrait mode,
After launch, vcB is first VC I called,
Phone stay in landscape, so when
viewDidAppearin vcB, it call rotate to LandscapeAt same time in viewDidAppear, I also call
present:vcASo currently, view have to do both rotate to landscape and present vcA(should in Portrait!!)
Then the bad situation happened!
当我启动应用程序时，它保持纵向模式，
启动后，vcB是我调用的第一个VC，
手机保持横向，所以
viewDidAppear在 vcB 时，它调用旋转到横向同时在viewDidAppear中，我也调用
present:vcA所以目前，视图必须同时旋转到横向和呈现 vcA（应该在纵向！！）
然后糟糕的情况发生了！
Solution
解决方案
Just disable rotate for first launch in "vcB", then in viewDidAppear, it will only call present:vcA
只需禁用旋转以在“vcB”中首次启动，然后在viewDidAppear，它只会调用present:vcA
Thanks all a lot!
非常感谢大家！
回答by Akash KR
Go to General settings of your xcode project
Find deployment info
Check the device orientation to portrait only.
转到 xcode 项目的常规设置
查找部署信息
仅检查设备方向为纵向。
OR
或者
- (void)viewWillAppear:(BOOL)animated {
[[UIDevice currentDevice] setValue:[NSNumber numberWithInteger: UIInterfaceOrientationPortrait]forKey:@"orientation"];
}
- (BOOL)shouldAutorotate{
return NO;
}
回答by Rokon
- Select your project->Target->Project->General
- Check and uncheck according to the screenshot(Under Deployment)
- Make sure you check requires full screen or else you can not submit your app to app store.
- 选择您的项目->目标->项目->常规
- 根据截图勾选和取消勾选（部署中）
- 确保您检查需要全屏，否则您无法将您的应用程序提交到应用程序商店。
