0

我正在使用以下代码：

 @IBAction func popToRoot(sender:UIBarButtonItem){

    navigationController.popToViewController(foodforteethViewController(), animated: false)

}

此函数与自定义后退按钮链接，并且 h 文件链接在 objective-c/swift 桥接文件中。问题是我收到如下错误：

2014-07-19 23:35:40.842 FoodForTeeth[9040:238499] * 断言失败 -[UINavigationController popToViewController:transition:], /SourceCache/UIKit_Sim/UIKit-3232.3/UINavigationController.m:5345 2014-07-19 23: 35:40.845 FoodForTeeth[9040:238499] *由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“无法获取弹出视图控制器。” *第一次抛出调用堆栈：( 0 CoreFoundation 0x00000001023ec995exceptionPreprocess + 165 1 libobjc.A.dylib 0x000000010209b9a3 objc_exception_throw + 45 2 CoreFoundation 0x00000001023ec7fa +[NSException raise:format:arguments:] + 106 3 Foundation 0x0000000101cc637f -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 195 4 UIKit 0x0000000100b456b6 -[UINavigationController popToViewController：过渡：] + 762 5 FoodForTeeth 0x00000001000272fe _TFC12FoodForTeeth9dietDiary9popToRootfS0_FCSo15UIBarButtonItemT_ + 302 6 FoodForTeeth 0x00000001000274f2 _TToFC12FoodForTeeth9dietDiary9popToRootfS0_FCSo15UIBarButtonItemT_ + 66 7 UIKit 0x00000001009f76b6 -[UIApplication sendAction:to:from:forEvent:] + 75 8 UIKit 0x00000001009f76b6 -[UIApplication sendAction:to:from:forEvent:] + 75 9 UIKit 0x0000000100af91c0 -[UIControl _sendActionsForEvents:withEvent:] + 467 10 UIKit 0x0000000100af858f -[UIControl touchesEnded:withEvent:] + 522 11 UIKit 0x0000000100a3c3b8 -[UIWindow _sendTouchesForEvent:] + 735 12 UIKit 0x0000000100a3cce3 -[UIWindow sendEvent:] + 683 13 UIKit 0x0000000100a0a1a1 -[UIApplication sendEvent:] + 246 14 UIKit 0x0000000100a1707a _UIApplicationHandleEventFromQueueEvent + 17591 15 UIKit 0x00000001009f3269 _UIApplicationHandleEventQueue + 1967 16 CoreFoundation 0x0000000102322a31 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION] + 246 14 UIKit 0x0000000100a1707a _UIApplicationHandleEventFromQueueEvent + 17591 15 UIKit 0x00000001009f3269 _UIApplicationHandleEventQueue + 1967 16 CoreFoundation 0x0000000102322a31 __CFRUNTIONLOOP_IS_OURCE_FORM_OUT] + 246 14 UIKit 0x0000000100a1707a _UIApplicationHandleEventFromQueueEvent + 17591 15 UIKit 0x00000001009f3269 _UIApplicationHandleEventQueue + 1967 16 CoreFoundation 0x0000000102322a31 __CFRUNTIONLOOP_IS_OURCE_FORM_OUT+ 17 17 CoreFoundation 0x000000010231826d __CFRunLoopDoSources0 + 269 18 CoreFoundation 0x00000001023178a4 __CFRunLoopRun + 868 19 CoreFoundation 0x00000001023172d6 CFRunLoopRunSpecific + 470 20 GraphicsServices 0x0000000105475bbc GSEventRunModal + 161 21 UIKit 0x00000001009f6288 UIApplicationMain + 1282 22 FoodForTeeth 0x0000000100054db3 main + 115 23 libdyld.dylib 0x0000000102b45145 start + 1 ) libc++ abi.dylib：以 NSException (lldb) 类型的未捕获异常终止

怎么了？

4

2 回答 2

1

您不能弹出不在NavigationController堆栈中的视图控制器。您应该像这样弹出

如果你想弹出到 rootViewController 比有直接方法使用这个

 @IBAction func popToRoot(sender:UIBarButtonItem){


        self.navigationController.popToRootViewControllerAnimated(false)
}
于 2014-07-19T22:50:48.460 回答
0

回到特定视图控制器的另一种方法是使用展开转场：展开转场 是什么以及如何使用它们？

于 2014-11-25T18:13:39.713 回答