iOS9导航栏后退按钮不起作用 [英] iOS9 Navigation Bar Back Button not working

问题描述

一切在iOS 9之前都能完美运行.

Everything works perfectly before iOS 9.

但是，当应用程序在iOS 9上运行时，轻按后退"按钮不会发生任何事情，因此我无法返回并保持灰色状态.

However, when the app is running on iOS 9, nothing happens when back button is tapped so I am not able to go back as well as it keeps greyed out.

此外，我无法在第一次搜索后选择下一个视图.
例如，
主页->点按一个按钮即可查看1->依次查看1
->轻按按钮以查看2->什么也没发生

Also, I am not able to segue to the next view after the first segue.
For example,
HomePage -> tap a button to segue to view 1 -> Segued to View 1
-> tap on a button to segue to view 2 -> nothing happens

我使用下面的代码执行segue，

I uses the code below to perform segue,

UIViewController *push = 
[self.storyboard instantiateViewControllerWithIdentifier:@"storyboard_id"];
[self.navigationController pushViewController:push animated:YES];

此问题仅在iPhone上发生
但该应用在模拟器上运行时可以完美运行.

This issue only happens at iPhone
but the app works flawlessly when running on a simulator.

谢谢您的帮助.

推荐答案

最后，问题已解决. 我已经创建了一个新项目，并使用相同的方法执行segue，并且完美地进行了segu.所以我排除了Xcode可能导致问题的可能性.而且我发现我已经通过NSRunLoop在我的应用程序代表处为应用程序传递了设备的令牌，我不知道为什么会导致这种奇怪的问题，我决定将设备令牌保存在NSUserdefault中，然后在主页上获取它.并将其解析到服务器.因此，在我现在拿走NSRunLoop之后，它现在就像魅力一样.

Finally, the problem is solved. I have been create a new project and use the same method to perform segue and it segued flawlessly. So I excluded the possibility of Xcode might cause the problem. And I found that I have passed the device token for apps at my app delegate by a NSRunLoop, I don't why it will cause such a weird problem, I decide to save the device token at NSUserdefault, then get it at the home page and parse it to server. So it works like a charm now after I take away the NSRunLoop now.

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