导航栏后退按钮弹出视图控制器
当点击导航控制器上的后退按钮时，视图是否会从堆栈中弹出？如果是这样，我该如何测试或确保它正确执行（换句话说，创建一个正确的导航控制器）？
我需要看看视图是否真的被弹出。有什么我可以使用 NSLog 来显示堆栈或其他内容的东西吗？
谢谢，
When hitting the Back button on a navigation controller, does the view get popped off the stack? If so, how can I test that or make sure that it does it correctly (in other words, created a proper navigation controller)?
I need to see if the view is actually getting popped. Is there anything I can NSLog that shows me the stack or something?
Thanks,
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是的，视图是从堆栈中弹出的。您可以检查堆栈的大小（视图数）来确认这一点。
Yes, the view is popped from the stack. You can check the size of the stack (number of views) to confirm this.
viewController 正在从堆栈中弹出，是的。您还可以在
- (void)viewWillAppear和- (void)viewDidAppear中使用NSLog(@"%@", self.navigationController.viewControllers);如果您不相信 Apple 工程师做得很好，请查看父 viewController 的方法以查看差异。The viewController is getting popped from the stack yes. You can also
NSLog(@"%@", self.navigationController.viewControllers);in- (void)viewWillAppearand- (void)viewDidAppearmethods of the parent viewController to see the differences if you don't trust that Apple engineers did a good job with it.NSLog(@"%@", self.navigationController.viewControllers);会在导航堆栈中提供 viewcontrollers 数组。您可以在视图消失之前和另一个视图出现之后对它们进行 nslogNSLog(@"%@", self.navigationController.viewControllers);would give the viewcontrollers array in navigation stack.you can nslog them before the view disappears and after the other view appears