向右推动animation导致损坏的导航栏

我UINavigationControllerinheritance从UIRTLNavigationController.m执行从右到左（不正常行为）推我已经添加在这个问题的底部，并得到这些警告：

  nested push animation can result in corrupted navigation bar Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted. 

我已经研究了这些错误，发现一个类阻止你接收它们： https ： //github.com/Plasma/BufferedNavigationController

我已经将BufferedNavigationController .h和.m添加到我的项目中，将BufferedNavigationController.h中的行更改为：@interface BufferedNavigationController：UIRTLNavigationController，并将BufferedNavigationController设置为IB中的UINavigationController自定义子类。

视图仍然从右到左，方法被调用内部BufferedNavigationController，但我仍然得到有关嵌套和..Navigation Bar子视图树可能会损坏的警告..

任何帮助，将不胜感激。

UIRTLNavigationController.m：

 #import "UIRTLNavigationController.h" @implementation UIRTLNavigationController - (id)initWithRootViewController:(UIViewController *)rootViewController { self = [super initWithRootViewController:rootViewController]; if (!self) return nil; return self; } - (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated { NSLog(@"pushViewController"); // Add the viewController and a fake controller without animation. Then pop the fake controller with animation. UIViewController *fakeController = [[[UIViewController alloc] init] autorelease]; [super setViewControllers:[[self viewControllers] arrayByAddingObjectsFromArray:[NSArray arrayWithObjects:viewController, fakeController, nil]] animated:NO]; [super popViewControllerAnimated:animated]; } - (void)popViewControllerAnimatedStep2:(UIViewController *)viewController { // Push the new top controller with animation [super pushViewController:viewController animated:YES]; // Remove the view that should have been popped NSMutableArray *arr = [NSMutableArray arrayWithArray:[self viewControllers]]; [arr removeObjectAtIndex:[[self viewControllers] count]-2]; [super setViewControllers:[NSArray arrayWithArray:arr] animated:NO]; } - (UIViewController *)popViewControllerAnimated:(BOOL)animated { NSLog(@"popViewControllerAnimated"); if (animated) { // Save the controller that should be on top after this pop operation UIViewController *newTopController = [[self viewControllers] objectAtIndex:[[self viewControllers] count]-2]; // Remove it from the stack. Leave the view that should be popped on top NSMutableArray *arr = [NSMutableArray arrayWithArray:[self viewControllers]]; [arr removeObjectAtIndex:[[self viewControllers] count]-2]; [super setViewControllers:[NSArray arrayWithArray:arr] animated:NO]; // Schedule the next step [self performSelector:@selector(popViewControllerAnimatedStep2:) withObject:newTopController afterDelay:0]; return [arr objectAtIndex:[arr count]-1]; } return [super popViewControllerAnimated:NO]; } - (void)dealloc { [super dealloc]; } @end 

Answer 1

我不知道你是否创build自定义的UINavigationController只是为了执行一个自定义的过渡，如果你这样做，有一个更简单的方法来做到这一点。 像下面的代码一样

 -(void)makeMyCustomAnimation { YourDestinationViewController *destinationController = [YourDestinationViewController alloc] initWithNib.....];//add the missing code fot ini CATransition* transition = [CATransition animation]; transition.duration = .25; //you can change this value to fit your needs transition.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseInEaseOut]; //kCAMediaTimingFunctionLinear //kCAMediaTimingFunctionEaseIn //kCAMediaTimingFunctionEaseOut //kCAMediaTimingFunctionEaseInEaseOut //kCAMediaTimingFunctionDefault transition.type = kCATransitionPush; //kCATransitionMoveIn; //kCATransitionPush, //kCATransitionReveal //kCATransitionFade transition.subtype = kCATransitionFromRight; //kCATransitionFromLeft, //kCATransitionFromRight //kCATransitionFromTop, //kCATransitionFromBottom [self.navigationController.view.layer addAnimation:transition forKey:kCATransition]; [self.navigationController pushViewController:destinationController animated:NO]; 

}

你可以通过改变subtype值来改变你的转换方向（我可能会设置错误的子types值，我会继续混合它们）

你也可以使用相同的方法来pop视图控制器。 一世

如果你想使用segues，只需要创build一个自定义的segue，并且通过添加前面的代码来添加-(void)perform方法，就必须使用[self sourceViewController];来获得视图控制器[self sourceViewController]; 和[self destinationViewController];

Answer 2

对我来说，问题是一个接一个地推动控制器，一个接一个地导致了几个过渡animation。 这个链接帮助了我： https : //github.com/Plasma/BufferedNavigationController/blob/master/BufferedNavigationController.m

我从这个堆栈溢出中得到了答案： iOS：popViewController出乎意料的行为