我正在尝试从 SKScene 展示一个 UIViewController 但是,应用程序崩溃了,这是我的代码:
1- :
UIViewController *vc = self.view.window.rootViewController;
helpVC = [[HelpViewController alloc]initWithNibName:@"HelpViewController" bundle:nil];
[vc presentViewController: helpVC animated: YES completion:nil];
2-
helpVC = [[HelpViewController alloc]initWithNibName:@"HelpViewController" bundle:nil];
SKScene *sks = (SKScene*)helpVC;
[self.view presentScene:sks];
我的应用在这两种情况下都崩溃了,感谢您的帮助
崩溃原因:
2014-02-08 16:38:29.119 BrickRacer[13883:70b] -[UIView presentScene:]: unrecognized selector sent to instance 0x10bb7ea50
2014-02-08 16:38:29.122 BrickRacer[13883:70b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIView presentScene:]: unrecognized selector sent to instance 0x10bb7ea50'
*** First throw call stack:
(
0 CoreFoundation 0x0000000101fe8795 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x0000000101d4b991 objc_exception_throw + 43
2 CoreFoundation 0x0000000102079bad -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x0000000101fda09d ___forwarding___ + 973
4 CoreFoundation 0x0000000101fd9c48 _CF_forwarding_prep_0 + 120
5 BrickRacer 0x000000010000bb6d -[ViewController viewDidLoad] + 317
6 BrickRacer 0x000000010000b996 -[HelpViewController viewDidLoad] + 54
7 UIKit 0x0000000100971fe4 -[UIViewController loadViewIfRequired] + 562
8 UIKit 0x00000001009721bd -[UIViewController view] + 29
9 UIKit 0x000000010097f03f -[UIViewController viewControllerForRotation] + 54
10 UIKit 0x0000000100977f5f -[UIViewController _visibleView] + 87
11 UIKit 0x0000000100bb7f89 -[UIWindowController transition:fromViewController:toViewController:target:didEndSelector:animation:] + 4550
12 UIKit 0x000000010097c579 -[UIViewController presentViewController:withTransition:completion:] + 4769
13 BrickRacer 0x000000010001c6a9 -[Menu help] + 521
14 BrickRacer 0x000000010001c43a -[Menu touchesBegan:withEvent:] + 554
15 SpriteKit 0x00000001017d8712 -[SKView touchesBegan:withEvent:] + 611
16 UIKit 0x00000001008bba84 -[UIWindow _sendTouchesForEvent:] + 300
17 UIKit 0x00000001008bc633 -[UIWindow sendEvent:] + 988
18 UIKit 0x0000000100895fa2 -[UIApplication sendEvent:] + 211
19 UIKit 0x0000000100883d7f _UIApplicationHandleEventQueue + 9549
20 CoreFoundation 0x0000000101f77ec1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
21 CoreFoundation 0x0000000101f77792 __CFRunLoopDoSources0 + 242
22 CoreFoundation 0x0000000101f9361f __CFRunLoopRun + 767
23 CoreFoundation 0x0000000101f92f33 CFRunLoopRunSpecific + 467
24 GraphicsServices 0x0000000102abe3a0 GSEventRunModal + 161
25 UIKit 0x0000000100886043 UIApplicationMain + 1010
26 BrickRacer 0x000000010000ea93 main + 115
27 libdyld.dylib 0x0000000104ab15fd start + 1
28 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
最佳答案
不要尝试直接从 SKScene
呈现 UIViewController
,这会破坏 MVC 模式。 SKScene
是 View
的一部分,View
不应该知道 ViewController
的任何信息。
相反,您可以使用 NSNotificationCenter
通知 SKScene
的 UIViewController
它应该显示另一个 UIViewController
:
在 SKScene
的 UIViewController
中:
- (void)awakeFromNib {
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:@selector(goToGameOverViewController:)
name:@"GoToGameOverViewController"
object:nil];
}
.
-(void)goToGameOverViewController:(NSNotification *) notification {
// Perform a segue or present ViewController directly
//[self performSegueWithIdentifier:@"GameOverSegue" sender:self];
HelpViewController *helpVC = [[HelpViewController alloc]initWithNibName:@"HelpViewController" bundle:nil];
[self presentViewController:helpVC animated: YES completion:nil];
}
.
- (void) dealloc
{
// If you don't remove yourself as an observer, the Notification Center
// will continue to try and send notification objects to the deallocated
// object.
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
在SKScene
中:
- (void)gameOver {
[[NSNotificationCenter defaultCenter]
postNotificationName:@"GoToGameOverViewController" object:self];
}
关于ios - 从 SKScene 呈现 UIViewController,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/21578391/