ios - NSInvalidArgumentException'，原因 : 'Receiver () has no segue with identifier ' ''

Question

> 2014-09-20 18:04:45.564 storyboard_demo[6919:60b] 嵌套推送

animation can result in corrupted navigation bar 2014-09-20 18:04:45.921 storyboard_demo[6919:60b] Finishing up a navigation transition in an unexpected state. Navigation Bar subview tree might get corrupted. 2014-09-20 18:04:46.442 storyboard_demo[6919:60b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver () has no segue with identifier 'third'' * First throw call stack: ( 0 CoreFoundation 0x017ed1e4 exceptionPreprocess + 180 1 libobjc.A.dylib
0x0156c8e5 objc_exception_throw + 44 2 UIKit
0x0034d48c -[UIViewController shouldPerformSegueWithIdentifier:sender:] + 0 3 storyboard_demo
0x0000254e -[secondViewController btn_second:] + 110 4
libobjc.A.dylib 0x0157e880 -[NSObject performSelector:withObject:withObject:] + 77 5 UIKit
0x0022e3b9 -[UIApplication sendAction:to:from:forEvent:] + 108 6
UIKit 0x0022e345 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 61 7 UIKit
0x0032fbd1 -[UIControl sendAction:to:forEvent:] + 66 8 UIKit
0x0032ffc6 -[UIControl _sendActionsForEvents:withEvent:] + 577 9
UIKit 0x0032f243 -[UIControl touchesEnded:withEvent:] + 641 10 UIKit
0x0026dddd -[UIWindow _sendTouchesForEvent:] + 852 11 UIKit
0x0026e9d1 -[UIWindow sendEvent:] + 1117 12 UIKit
0x002405f2 -[UIApplication sendEvent:] + 242 13 UIKit
0x0022a353 _UIApplicationHandleEventQueue + 11455 14 CoreFoundation 0x0177677f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION + 15 15 CoreFoundation 0x0177610b __CFRunLoopDoSources0 + 235 16 CoreFoundation 0x017931ae __CFRunLoopRun + 910 17 CoreFoundation
0x017929d3 CFRunLoopRunSpecific + 467 18 CoreFoundation
0x017927eb CFRunLoopRunInMode + 123 19 GraphicsServices
0x037e15ee GSEventRunModal + 192 20 GraphicsServices
0x037e142b GSEventRun + 104 21 UIKit
0x0022cf9b UIApplicationMain + 1225 22 storyboard_demo
0x00002e4d main + 141 23 libdyld.dylib
0x01e3470d start + 1 24 ???
0x00000001 0x0 + 1 ) libc++abi.dylib: terminating with uncaught exception of type NSException

(lldb)

Answer 1

分两步完成。

btn_second: 可以发布一个通知，表明它已被按下，然后返回到“first”。 'first' 收到通知并设置标志。在 viewWillAppear 中，“first”检查标志并在设置后执行“third”segue。