无法识别的选择器isPitched被调用 [英] unrecognized selector isPitched called

问题描述

在我的应用中，我正在显示带有注释的地图，并且用户可以在表格视图(在模式视图控制器中)中浏览注释列表.

In my app, I am displaying a map with annotations, and the user can browse the list of annotations in a table view (in a modal view controller).

我遇到了一个怪异的错误，可以在设备和模拟器(iOS 7& 8)上重现.

I am experiencing a weird bug that I can reproduce both on device and in the simulator (iOS 7 & 8).

在倾斜模式下，如果我尝试在POI表格视图中选择一个项目，它将执行以下操作之一:

When in pitched mode, if I try to select an item in my POI table view, it does one of these :

• 将地图中心更改为地图上的随机点，而不是所选注释.
• 对我放在下面的消息(启用了NSZombies)感到震惊.

-[__ NSCFString isPitched]:无法识别的选择器已发送到实例0x7f24e6e0

-[__NSCFString isPitched]: unrecognized selector sent to instance 0x7f24e6e0

我尝试了几种方法来解决此错误，但没有成功.而令我困惑的是，我找不到关于isPitched方法的任何信息.它不在我的代码中，也没有在Apple文档中.

I tried several methods to solve this bug, but with no success. And what puzzles me is I can't find any information on the isPitched method. It isn't in my code, neither in Apple documentation.

有人对MapKit和这些类型的问题了解更多吗? 另外，当用户在列表中选择POI时，您是否知道停用音高的方法?也许可以防止该错误.

Does someone knows more on MapKit and these types of problem ? Alternatively, would you know a way to deactivate the pitch when a user select a POI in the list ? Maybe it would prevent the bug.

:刚刚发现'isPitched'方法实际上是

EDIT : Just found that the 'isPitched' method is actually part of VectorKit ! Doesn't really help, though. No documentation on VectorKit...

添加了堆栈跟踪.

-[__NSCFString isPitched]: unrecognized selector sent to instance 0x7db84870
2015-02-28 14:25:08.501 Cartel 2015[2481:178443] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSCFString isPitched]: unrecognized selector sent to instance 0x7db84870'
*** First throw call stack:
(
    0   CoreFoundation                      0x00afb946 __exceptionPreprocess + 182
    1   libobjc.A.dylib                     0x00784a97 objc_exception_throw + 44
    2   CoreFoundation                      0x00b035c5 -[NSObject(NSObject) doesNotRecognizeSelector:] + 277
    3   CoreFoundation                      0x00a4c3e7 ___forwarding___ + 1047
    4   CoreFoundation                      0x00a4bfae _CF_forwarding_prep_0 + 14
    5   VectorKit                           0x02dd09c1 __86-[VKMapCameraController _animateToPosition:pitch:yaw:duration:timingCurve:completion:]_block_invoke + 1809
    6   VectorKit                           0x02d88645 -[VKAnimation onTimerFired:] + 357
    7   VectorKit                           0x02d9895e -[VKScreenCanvas animateWithTimestamp:] + 686
    8   VectorKit                           0x02d9850e -[VKScreenCanvas updateWithTimestamp:] + 46
    9   VectorKit                           0x02d71e69 -[VKMapView onTimerFired:] + 89
    10  libobjc.A.dylib                     0x0079a771 -[NSObject performSelector:withObject:] + 70
    11  VectorKit                           0x0323463c -[GGLDisplayLink _displayLinkFired:] + 60
    12  QuartzCore                          0x041abcad _ZN2CA7Display15DisplayLinkItem8dispatchEv + 45
    13  QuartzCore                          0x041abb83 _ZN2CA7Display11DisplayLink14dispatch_itemsEyyy + 311
    14  QuartzCore                          0x041ac067 _ZN2CA7Display16TimerDisplayLink8callbackEP16__CFRunLoopTimerPv + 123
    15  CoreFoundation                      0x00a558d6 __CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 22
    16  CoreFoundation                      0x00a5525d __CFRunLoopDoTimer + 1309
    17  CoreFoundation                      0x00a146ba __CFRunLoopRun + 2090
    18  CoreFoundation                      0x00a13bcb CFRunLoopRunSpecific + 443
    19  CoreFoundation                      0x00a139fb CFRunLoopRunInMode + 123
    20  GraphicsServices                    0x03f4324f GSEventRunModal + 192
    21  GraphicsServices                    0x03f4308c GSEventRun + 104
    22  UIKit                               0x00f318b6 UIApplicationMain + 1526
    23  Cartel 2015                         0x0001110d main + 141
    24  libdyld.dylib                       0x046aaac9 start + 1
    25  ???                                 0x00000001 0x0 + 1

推荐答案

好，我设法通过以下修复来防止崩溃.

OK, I managed to prevent the crash with the following fix.

当我在列表中选择一个POI时，我触发了一个视图控制器的委托方法，该方法从tableView控制器的didSelect方法中处理MapView.如果您有同样的问题，那么我想您到目前为止已经明白我的意思了.

When a POI is selected in my list, I trigger a delegate method of the view controller that handles the MapView from the didSelect method of the controller of the tableView. If you have the same problem, I assume you understand what I mean, so far.

在这种方法中，我要求MapView以POI的坐标为中心.

In this method, I asked the MapView to center itself on the coordinates of the POI.

现在，要解决仅在用户跟踪模式设置为倾斜"(遵循您的方向)时才会发生的问题，我只是在方法的开头添加了一行以停用此跟踪模式:

Now, to solve the problem that only happened when the user tracking mode was set to "pitched" (following your orientation), I simply added a line to deactivate this tracking mode at the beginning of my method :

[mapView setUserTrackingMode: MKUserTrackingModeNone] ;

这删除了随机出现的崩溃.请注意，这不会导致违反直觉的行为，因为在用户移动地图时会自动停用此跟踪模式.

This removed the crashes that randomly appeared. Notice that it doesn't result in a counterintuitive behavior because this tracking mode is automatically deactivated when the user moves the map.

所以问题为我解决了，但是如果您有关于此isPitched选择器以及真正引起问题的原因的任何信息，非常欢迎在此处发布！

So problem solved for me but if you have any information about this isPitched selector and what really caused the problem, you're very welcome to post it here !

这篇关于无法识别的选择器isPitched被调用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！