iphone - iOS 应用程序在启动时崩溃

Question

我的应用程序的最新版本已开始在某些用户启动时崩溃。 iTunes 中只有 1 个崩溃报告，如下所示。我无法在任何设备上重现。

两个版本之间的变化是

1. 集成了两个第三方库(iNotify、openUDID)
2. 从 GCC 编译器切换到 Apple LLVM 3.1 编译器(新库需要 arc 支持)
3. 在启用 arc 的情况下编译新库的代码，为项目的其余部分禁用 arc。

我在我的 iNotify 的 appdelegate 的 didFinishLaunchingWithOptions 中添加了 1 行。从堆栈跟踪来看，我不认为它在那里崩溃。

有点不知所措。任何帮助，将不胜感激。谢谢!

Hardware Model:      iPhone4,1
Process:         MyAPP [3251]
Path:            /var/mobile/Applications/228BBF42-A374-4773-8C18-EFA47CE98C02/MyAPP.app/MyAPP
Identifier:      MyAPP
Version:         ??? (???)
Code Type:       ARM (Native)
Parent Process:  launchd [1]

Date/Time:       2012-05-03 19:50:07.917 -0500
OS Version:      iPhone OS 5.1 (9B179)
Report Version:  104

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x00000000, 0x00000000
Crashed Thread:  0

Last Exception Backtrace:
0   CoreFoundation                    0x3729e88f __exceptionPreprocess + 163
1   libobjc.A.dylib                   0x357a4259 objc_exception_throw + 33
2   CoreFoundation                    0x372a1a9b -[NSObject doesNotRecognizeSelector:] + 175
3   CoreFoundation                    0x372a0915 ___forwarding___ + 301
4   CoreFoundation                    0x371fb650 _CF_forwarding_prep_0 + 48
5   UIKit                             0x33aa9f93 -[UIAlertView(Private) _popoutAnimationDidStop:finished:] + 855
6   UIKit                             0x3395fc53 -[UIViewAnimationState sendDelegateAnimationDidStop:finished:] + 471
7   UIKit                             0x3396557d -[UIViewAnimationState animationDidStop:finished:] + 53
8   QuartzCore                        0x341fbc2f CA::Layer::run_animation_callbacks(void*) + 203
9   libdispatch.dylib                 0x344f6ee7 _dispatch_main_queue_callback_4CF$VARIANT$mp + 195
10  CoreFoundation                    0x372712ad __CFRunLoopRun + 1269
11  CoreFoundation                    0x371f44a5 CFRunLoopRunSpecific + 301
12  CoreFoundation                    0x371f436d CFRunLoopRunInMode + 105
13  GraphicsServices                  0x32101439 GSEventRunModal + 137
14  UIKit                             0x33978e7d UIApplicationMain + 1081
15  MyAPP                          0x00002bfb main (main.m:14)
16  MyAPP                          0x00002bb4 0x00002bb4


Thread 0 name:  Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib            0x3571d32c __pthread_kill + 8
1   libsystem_c.dylib                 0x3186b208 pthread_kill + 48
2   libsystem_c.dylib                 0x31864298 abort + 88
3   libc++abi.dylib                   0x34e70f64 abort_message + 40
4   libc++abi.dylib                   0x34e6e346 _ZL17default_terminatev + 18
5   libobjc.A.dylib                   0x357a4350 _objc_terminate + 140
6   libc++abi.dylib                   0x34e6e3be _ZL19safe_handler_callerPFvvE + 70
7   libc++abi.dylib                   0x34e6e44a std::terminate() + 14
8   libc++abi.dylib                   0x34e6f81e __cxa_rethrow + 82
9   libobjc.A.dylib                   0x357a42a2 objc_exception_rethrow + 6
10  CoreFoundation                    0x371f4506 CFRunLoopRunSpecific + 398
11  CoreFoundation                    0x371f4366 CFRunLoopRunInMode + 98
12  GraphicsServices                  0x32101432 GSEventRunModal + 130
13  UIKit                             0x33978e76 UIApplicationMain + 1074
14  MyAPP                          0x00002bf4 main (main.m:14)
15  MyAPP                          0x00002bac 0x00002bac

Thread 1 name:  Dispatch queue: com.apple.libdispatch-manager
Thread 1:
0   libsystem_kernel.dylib            0x3570d3a8 kevent + 24
1   libdispatch.dylib                 0x344f7f04 _dispatch_mgr_invoke + 708
2   libdispatch.dylib                 0x344f7c22 _dispatch_mgr_thread + 30

Thread 2 name:  WebThread
Thread 2:
0   libsystem_kernel.dylib            0x3570d004 mach_msg_trap + 20
1   libsystem_kernel.dylib            0x3570d1fa mach_msg + 50
2   CoreFoundation                    0x372723ec __CFRunLoopServiceMachPort + 120
3   CoreFoundation                    0x37271124 __CFRunLoopRun + 876
4   CoreFoundation                    0x371f449e CFRunLoopRunSpecific + 294
5   CoreFoundation                    0x371f4366 CFRunLoopRunInMode + 98
6   WebCore                           0x32eb40f0 _ZL12RunWebThreadPv + 396
7   libsystem_c.dylib                 0x3182c72e _pthread_start + 314
8   libsystem_c.dylib                 0x3182c5e8 thread_start + 0

Thread 3:
0   libsystem_kernel.dylib            0x3571dcd4 __workq_kernreturn + 8
1   libsystem_c.dylib                 0x31826f36 _pthread_wqthread + 610
2   libsystem_c.dylib                 0x31826cc8 start_wqthread + 0

Thread 4 name:  com.apple.CFSocket.private
Thread 4:
0   libsystem_kernel.dylib            0x3571d570 __select + 20
1   CoreFoundation                    0x3727663a __CFSocketManager + 726
2   libsystem_c.dylib                 0x3182c72e _pthread_start + 314
3   libsystem_c.dylib                 0x3182c5e8 thread_start + 0

Thread 5:
0   libsystem_kernel.dylib            0x3571dcd4 __workq_kernreturn + 8
1   libsystem_c.dylib                 0x31826f36 _pthread_wqthread + 610
2   libsystem_c.dylib                 0x31826cc8 start_wqthread + 0

一些额外的代码。

appdelegate中定义了一个alertview如下:

#import <UIKit/UIKit.h>


@class MyAPPViewController;


@interface MyAPPAppDelegate : NSObject <UIApplicationDelegate> {
    UIViewController *rvc;
    UIAlertView *m_cAlertControl;
}

@property (nonatomic, retain) IBOutlet UIWindow *window;


-(BOOL)shouldNag;
-(void)shouldEnableUI:(BOOL)pIsEnable;
-(void)updateRunCount;

@end

以及在应用程序委托(delegate)中实现的方法如下:

-(void)shouldEnableUI:(BOOL)pIsEnable
{ 
    if(NO == pIsEnable)
    {
        if (nil == m_cAlertControl) {
        m_cAlertControl = [[UIAlertView alloc] init];
    }
    m_cAlertControl.backgroundColor = [UIColor clearColor];
    m_cAlertControl.opaque = NO;
    [m_cAlertControl setHidden:YES];
    [m_cAlertControl show];
}
else {
    if (nil != m_cAlertControl) {
        [m_cAlertControl dismissWithClickedButtonIndex:0 animated:YES];
    }
}

View Controller 对方法的调用如下:

[appDelegate shouldEnableUI:NO];

Answer 1

在看到崩溃日志问题时，似乎是在 UIAlertViewDelegate 发布后对其进行了调用。

您需要在使用警报的 Controller 中释放它 -

-(void)dealloc {
    self.alertView.delegate = nil; //setting delegate to nil
    self.alertView = nil; //if you have defined alert as property
    //other release statements of your controller
    [super dealloc];
}

如果您需要一些其他信息，您可以添加您的应用程序的一些代码，或者您的应用程序不是这种情况。

编辑 1 -

-(void)dealloc {
    m_cAlertControl.delegate = nil; //setting delegate to nil
    [m_cAlertControl release];

    //other release statements of your controller
    [super dealloc];
}