我有一个应用程序，它在iOS 7下运行良好，但当为iOS 8构建时，放松段不起作用.
我创建了一个新项目，添加了一个模式(navigationcontroller和tableviewcontroller)，并try 使用一个展开模式.不幸的是，它也不起作用.要展开到的方法位于"设计视图"控制器中.展开序列是通过故事板(tableviewcontroller中的导航栏按钮)创建的.当我点击该按钮时，什么也没有发生.没有日志(log)输出，模式也不会消失.它似乎也只影响模态序列.push/popover正常展开.
有没有人有过类似的问题，并且知道我如何解决它？
Apple has FIXED this bug in iOS 8.1
Temporary solutions for iOS 8.0
只有在下一种情况下，放松阶段才会起作用:
View structure: UITabBarController -> UINagivationController -> UIViewController1 -> UIViewController2
通常(在iOS 7、8.1中)，当从UIViewController2放松到UIViewController1时，它会在UIViewController1中呼叫viewControllerForUnwindSegueAction.
但是在iOS 8.0和8.0中.x、 它将在UITabBarController中调用viewControllerForUnwindSegueAction而不是UIViewController1，这就是为什么unwind segue不再工作的原因.
Solution:通过创建自定义UITabBarController并使用自定义UITabBarController来覆盖UITabBarController中的viewControllerForUnwindSegueAction.
For Swift
CustomTabBarController.敏捷的
import UIKit
class CustomTabBarController: UITabBarController {
override func viewControllerForUnwindSegueAction(action: Selector, fromViewController: UIViewController, withSender sender: AnyObject?) -> UIViewController? {
var resultVC = self.selectedViewController?.viewControllerForUnwindSegueAction(action, fromViewController: fromViewController, withSender: sender)
return resultVC
}
}
For old school Objective-C
CustomTabBarController.H
#import <UIKit/UIKit.h>
@interface CustomTabBarController : UITabBarController
@end
CustomTabBarController.M
#import "CustomTabBarController.H"
@interface CustomTabBarController ()
@end
@implementation CustomTabBarController
-(UIViewController *)viewControllerForUnwindSegueAction:(SEL)action fromViewController:(UIViewController *)fromViewController withSender:(id)sender
{
return [self.selectedViewController viewControllerForUnwindSegueAction:action fromViewController:fromViewController withSender:sender];
}
@end
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DO NOT USE ANY SOLUTIONS BELOW THIS POINT (they are out of date and just for reference)
Latest update on Sep 23
My new solution is pushing to a view that embedded in a navigation controller, and config that navigation controller to hide bottom bar on push(a tick box in IB). Then you will have a view looks like a modal view, the only different is the animate of pushing and popping. You can custom if you want
Updated:下面的解决方案实际上是tab bar下的modal view，这将导致进一步的视图布局问题.
将segue类型更改为Present As Popover将仅适用于iPhones和on iOS7 your app will crash的iOS8.
同样，为了解决这个问题，我将segue的演示设置为当前上下文(我的应用程序仅适用于iphone).
默认和全屏将不起作用.
