Question

所以我开始获得的iOS应用程序现在正在我们的开发中。它基本上是一个音乐艺术家/内容聚合设置。

我们遇到的第一个错误是典型的未捕获异常终止。特别是在“音乐”标签上开始播放歌曲之后，如果用户返回“主页”标签并返回“音乐”标签以停止播放歌曲，则播放终止。

我已经包含了下面的日志，因为我正在向任何愿意指出我如何解决这个问题的人提出帮助！我对objective-c和xcode相当新，所以任何帮助都非常感谢，我将欠你一个！（请随时向我询问您可能需要进一步协助的更多信息，我很乐意遵守。）

谢谢！

EDITED：在@autoreleasepool的大括号里面是我被引导到SIGABRT的原因。如果您需要更多，请告诉我们！

#import <UIKit/UIKit.h>

#import "AppDelegate.h"

int main(int argc, char * argv[])
{
    @autoreleasepool {
        return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
    }
}

下面的原始日志消息

2013-12-02 01:04:46.971 The Deep North[10640:70b] AVPlayerStatusReadyToPlay
2013-12-02 01:04:48.896 The Deep North[10640:70b] Now playing: Broken Clocks
2013-12-02 01:04:49.951 The Deep North[10640:70b] *** Terminating app due to uncaught exception 'NSRangeException', reason: 'Cannot remove an observer <MusicViewController 0x10d037390> for the key path "status" from <AVPlayer 0x10d01ebb0> because it is not registered as an observer.'
*** First throw call stack:
(
    0   CoreFoundation                      0x00000001019b7795 __exceptionPreprocess + 165
    1   libobjc.A.dylib                     0x000000010171a991 objc_exception_throw + 43
    2   CoreFoundation                      0x00000001019b75ad +[NSException raise:format:] + 205
    3   Foundation                          0x000000010131a109 -[NSObject(NSKeyValueObserverRegistration) _removeObserver:forProperty:] + 500
    4   Foundation                          0x0000000101319eb3 -[NSObject(NSKeyValueObserverRegistration) removeObserver:forKeyPath:] + 95
    5   The Deep North                      0x00000001000036ea -[MusicViewController playSong:] + 442
    6   UIKit                               0x000000010037e096 -[UIApplication sendAction:to:from:forEvent:] + 80
    7   UIKit                               0x000000010037e044 -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 17
    8   UIKit                               0x0000000100452450 -[UIControl _sendActionsForEvents:withEvent:] + 203
    9   UIKit                               0x00000001004519c0 -[UIControl touchesEnded:withEvent:] + 530
    10  UIKit                               0x0000000100682c3d _UIGestureRecognizerUpdate + 5149
    11  UIKit                               0x00000001003b2925 -[UIWindow _sendGesturesForEvent:] + 928
    12  UIKit                               0x00000001003b35e5 -[UIWindow sendEvent:] + 910
    13  UIKit                               0x000000010038cfa2 -[UIApplication sendEvent:] + 211
    14  UIKit                               0x000000010037ad7f _UIApplicationHandleEventQueue + 9549
    15  CoreFoundation                      0x0000000101946ec1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
    16  CoreFoundation                      0x0000000101946792 __CFRunLoopDoSources0 + 242
    17  CoreFoundation                      0x000000010196261f __CFRunLoopRun + 767
    18  CoreFoundation                      0x0000000101961f33 CFRunLoopRunSpecific + 467
    19  GraphicsServices                    0x0000000101ec93a0 GSEventRunModal + 161
    20  UIKit                               0x000000010037d043 UIApplicationMain + 1010
    21  The Deep North                      0x0000000100009bc3 main + 115
    22  libdyld.dylib                       0x00000001052ec5fd start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException

停止音乐播放器后SIGABRT（应用程序自行终止）

0 个答案: