UITabBarController应用程序和pushViewController失败
我创build了一个TabBarController应用程序与UINavigationControllers ，A，B和C内的三个ViewControllers 。我已经创build了一切以编程方式。 现在我想在这些TabBar项目之一中推送一些ViewController。
例如，如果我在ViewController B和我按下一个button我想做一个pushViewController到ViewController：D，如果我按下新的button在DI想要去一个新的ViewController大肠杆菌，只要我想我应该可以回来NavigationController后退button。
问题是当我试图从D回到B，我有一个新的D和B之间的空ViewController，我得到这个错误：
首先，我在B中按下NEXTbuttonD：
2013-10-30 01:00:07.076 Wplanet[11964:70b] nested push animation can result in corrupted navigation bar 2013-10-30 01:00:07.444 Wplanet[11964:70b] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted. 2013-10-30 01:00:07.582 Wplanet[11964:70b] Unbalanced calls to begin/end appearance transitions for <DViewController: 0x8aa7260>.
这里的应用程序不会崩溃。
其次，我在D，我想回到B（通过backButton在导航栏中）：
第一次按下后退button，在导航栏中出现一个空的viewController（在D和B之间）。 然后我按下新的BackButton和应用程序崩溃与此错误：
2013-10-30 01:03:54.790 Wplanet[12001:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Can't add self as subview' *** First throw call stack: ( 0 CoreFoundation 0x01ce25e4 __exceptionPreprocess + 180 1 libobjc.A.dylib 0x01a658b6 objc_exception_throw + 44 2 CoreFoundation 0x01ce23bb +[NSException raise:format:] + 139 3 UIKit 0x0083adfb -[UIView(Internal) _addSubview:positioned:relativeTo:] + 113 4 UIKit 0x0082e9b1 -[UIView(Hierarchy) addSubview:] + 56 5 UIKit 0x007c7766 __53-[_UINavigationParallaxTransition animateTransition:]_block_invoke + 1701 6 UIKit 0x008353ef +[UIView(Animation) performWithoutAnimation:] + 82 7 UIKit 0x007c6c96 -[_UINavigationParallaxTransition animateTransition:] + 1155 8 UIKit 0x00901e4e -[UINavigationController _startCustomTransition:] + 3446 9 UIKit 0x0090e0c7 -[UINavigationController _startDeferredTransitionIfNeeded:] + 688 10 UIKit 0x0090ecb9 -[UINavigationController __viewWillLayoutSubviews] + 57 11 UIKit 0x00a48181 -[UILayoutContainerView layoutSubviews] + 213 12 UIKit 0x0083e267 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 355 13 libobjc.A.dylib 0x01a7781f -[NSObject performSelector:withObject:] + 70 14 QuartzCore 0x045d52ea -[CALayer layoutSublayers] + 148 15 QuartzCore 0x045c90d4 _ZN2CA5Layer16layout_if_neededEPNS_11TransactionE + 380 16 QuartzCore 0x045c8f40 _ZN2CA5Layer28layout_and_display_if_neededEPNS_11TransactionE + 26 17 QuartzCore 0x04530ae6 _ZN2CA7Context18commit_transactionEPNS_11TransactionE + 294 18 QuartzCore 0x04531e71 _ZN2CA11Transaction6commitEv + 393 19 QuartzCore 0x04532544 _ZN2CA11Transaction17observer_callbackEP19__CFRunLoopObservermPv + 92 20 CoreFoundation 0x01caa4ce __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 30 21 CoreFoundation 0x01caa41f __CFRunLoopDoObservers + 399 22 CoreFoundation 0x01c88344 __CFRunLoopRun + 1076 23 CoreFoundation 0x01c87ac3 CFRunLoopRunSpecific + 467 24 CoreFoundation 0x01c878db CFRunLoopRunInMode + 123 25 GraphicsServices 0x02ee59e2 GSEventRunModal + 192 26 GraphicsServices 0x02ee5809 GSEventRun + 104 27 UIKit 0x007d3d3b UIApplicationMain + 1225 28 Woowplanet 0x0000592d main + 141 29 libdyld.dylib 0x0258a70d start + 1 30 ??? 0x00000001 0x0 + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException
我曾尝试这样做：
appDelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // TAB BAR CONTROLLER UITabBarController *tabBarController = [[UITabBarController alloc] init]; AViewController *aVC = [[AViewController alloc] init]; // nombre tab abr controller aVC.title = @"A"; UINavigationController *nav1 = [[UINavigationController alloc] initWithRootViewController:aVC]; nav1.navigationBar.topItem.title = nil; BViewController *bVC = [[BViewController alloc] init]; bVC.title = @"bVC"; UINavigationController *nav2 = [[UINavigationController alloc] initWithRootViewController:sherpaVC]; nav2.navigationBar.topItem.title = nil; CViewController *cVC = [[CViewController alloc] init]; cVC.title = @"cVC"; UINavigationController *nav3 = [[UINavigationController alloc] initWithRootViewController:cVC]; nav3.navigationBar.topItem.title = nil; [tabBarController setViewControllers:@[nav1,nav2,nav3]]; [tabBarController setSelectedIndex:1]; self.window.rootViewController = tabBarController; self.window.backgroundColor = [UIColor whiteColor]; [self.window makeKeyAndVisible]; return YES; }
BViewController代码：
- (void)viewDidLoad { [super viewDidLoad]; UILabel *titleLbl = [[UILabel alloc] initWithFrame:CGRectMake(75, 75, 200, 14)]; [titleLbl setTextColor:UIColorFromRGB(0x7B2F19)]; [titleLbl setFont:[UIFont systemFontOfSize:14]]; [titleLbl setBackgroundColor:[UIColor clearColor]]; [titleLbl setText:@"I am in Bcontroller"]; [self.view addSubview:titleLbl]; UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(75, 175, 200, 14)]; [btn setBackgroundColor:[UIColor blueColor]]; [btn setTitle:@"Next" forState:UIControlStateNormal]; [btn addTarget:self action:@selector(next) forControlEvents:UIControlEventAllTouchEvents]; [self.view addSubview:btn]; } -(void)next { DViewController *dVC = [[DViewController alloc] init]; [self.navigationController pushViewController:dVC animated:YES]; }
你的问题是使用UIControlEventAllTouchEvents作为addTarget：action：forControlEvents：方法的参数。 这导致“next”方法被调用两次。 将其更改为UIControlEventTouchUpInside，它应该正常工作。