我们将iOS 6应用程序迁移到iOS 7，而不是通过一些小的调整来改变任何东西。我们在3,4,4S和5S iPhone上测试了应用，并报告没有问题。
现在有两个用户报告应用程序在启动时崩溃。我建议他们中的一个完全删除应用程序并再次安装，这导致应用程序顺利运行。
他将崩溃日志转发给我，但它有点神秘。任何人都可以帮我解决这个问题吗？
编辑：符号化的崩溃日志
Incident Identifier: 687B278C-313F-4533-81E8-0003428A3362
CrashReporter Key: b25d61923c16e6a67af8ea7bf81643ba93f4d1ea
Hardware Model: iPhone4,1
Process: RunControl [3488]
Path: /var/mobile/Applications/DB78DB79-2AB2-4ADD-89C8-BACDBB6BCCF3/RunControl.app/RunControl
Identifier: com.gsddl.RunControl
Version: 1.5 (1.5)
Code Type: ARM (Native)
Parent Process: launchd [1]
Date/Time: 2014-03-10 09:49:34.065 +0100
OS Version: iOS 7.0.6 (11B651)
Report Version: 104
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread: 3
Last Exception Backtrace:
0 CoreFoundation 0x2dbbbf46 __exceptionPreprocess + 126
1 libobjc.A.dylib 0x37f4b6aa objc_exception_throw + 34
2 CoreFoundation 0x2dbbbe88 +[NSException raise:format:] + 100
3 Foundation 0x2e4dd448 -[NSString stringByAppendingString:] + 84
4 RunControl 0x000b2302 -[RunControlAppDelegate downloadData] (RunControlAppDelegate.m:297)
5 Foundation 0x2e59fc82 __NSThread__main__ + 1058
6 libsystem_pthread.dylib 0x38572c18 _pthread_body + 136
7 libsystem_pthread.dylib 0x38572b8a _pthread_start + 98
8 libsystem_pthread.dylib 0x38570c8c thread_start + 4
Thread 0:
0 libsystem_kernel.dylib 0x38509014 0x384f7000 + 73748
1 libsystem_pthread.dylib 0x38572a74 pthread_create + 156
2 Foundation 0x2e50fb00 -[NSThread start] + 284
3 RunControl 0x000b20c4 -[RunControlAppDelegate initData] (RunControlAppDelegate.m:274)
4 RunControl 0x000b0f58 -[RunControlAppDelegate application:didFinishLaunchingWithOptions:] (RunControlAppDelegate.m:32)
5 UIKit 0x3039f2fa -[UIApplication _handleDelegateCallbacksWithOptions:isSuspended:restoreState:] + 270
6 UIKit 0x3039ed4a -[UIApplication _callInitializationDelegatesForURL:payload:suspended:] + 1386
7 UIKit 0x3039934e -[UIApplication _runWithURL:payload:launchOrientation:statusBarStyle:statusBarHidden:] + 710
8 UIKit 0x3033441a -[UIApplication handleEvent:withNewEvent:] + 3126
9 UIKit 0x3033371c -[UIApplication sendEvent:] + 68
10 UIKit 0x30398b38 _UIApplicationHandleEvent + 660
11 GraphicsServices 0x327cf70a _PurpleEventCallback + 606
12 GraphicsServices 0x327cf2f2 PurpleEventCallback + 30
13 CoreFoundation 0x2db869dc __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 32
14 CoreFoundation 0x2db86976 __CFRunLoopDoSource1 + 342
15 CoreFoundation 0x2db8514a __CFRunLoopRun + 1394
16 CoreFoundation 0x2daefc22 CFRunLoopRunSpecific + 518
17 CoreFoundation 0x2daefa06 CFRunLoopRunInMode + 102
18 UIKit 0x30397dd4 -[UIApplication _run] + 756
19 UIKit 0x30393044 UIApplicationMain + 1132
20 RunControl 0x000b0f1a main (main.m:16)
21 RunControl 0x000b0edc start + 36
Thread 1:
0 libsystem_kernel.dylib 0x384f783c 0x384f7000 + 2108
1 libdispatch.dylib 0x38442e08 _dispatch_mgr_invoke + 228
2 libdispatch.dylib 0x3843239e _dispatch_mgr_thread$VARIANT$up + 34
Thread 2:
0 libsystem_kernel.dylib 0x3850ac7c 0x384f7000 + 81020
1 libsystem_pthread.dylib 0x38570dc6 _pthread_wqthread + 306
2 libsystem_pthread.dylib 0x38570c80 start_wqthread + 4
Thread 3 Crashed:
0 libsystem_kernel.dylib 0x3850a1fc 0x384f7000 + 78332
1 libsystem_pthread.dylib 0x38573a2e pthread_kill + 54
2 libsystem_c.dylib 0x384baff8 abort + 72
3 libc++abi.dylib 0x377e9cd2 abort_message + 70
4 libc++abi.dylib 0x378026e0 default_terminate_handler() + 248
5 libobjc.A.dylib 0x37f4b91e _objc_terminate() + 190
6 libc++abi.dylib 0x378001c4 std::__terminate(void (*)()) + 76
7 libc++abi.dylib 0x377ffa18 __cxa_throw + 112
8 libobjc.A.dylib 0x37f4b77e objc_exception_throw + 246
9 CoreFoundation 0x2dbbbe88 +[NSException raise:format:] + 100
10 Foundation 0x2e4dd448 -[NSString stringByAppendingString:] + 84
11 RunControl 0x000b2302 -[RunControlAppDelegate downloadData] (RunControlAppDelegate.m:297)
12 Foundation 0x2e59fc82 __NSThread__main__ + 1058
13 libsystem_pthread.dylib 0x38572c1a _pthread_body + 138
14 libsystem_pthread.dylib 0x38572b8a _pthread_start + 98
15 libsystem_pthread.dylib 0x38570c8c thread_start + 4
Thread 3 crashed with ARM Thread State (32-bit):
r0: 0x00000000 r1: 0x00000000 r2: 0x00000000 r3: 0x00002060
r4: 0x00000006 r5: 0x026f1000 r6: 0x00000000 r7: 0x026effb4
r8: 0x16dbd9d0 r9: 0x00000001 r10: 0x16d52ce0 r11: 0x00000000
ip: 0x00000148 sp: 0x026effa8 lr: 0x38573a33 pc: 0x3850a1fc
cpsr: 0x00000010
和RunControlAppDelegate.m（约297）：
[295] - (void) downloadData {
[296] NSString *stringURL = [config valueForKey:@"Users"];
[297] NSURL *url = [NSURL URLWithString:[self.URL stringByAppendingString:stringURL]];
[298] NSData *urlData = [NSData dataWithContentsOfURL:url];
...
答案 0 :(得分：0)
我冒昧地猜测你的更新包括64位更新iOS7 + iPhone5，你的数据可能格式化格式不正确：
ie：[NSString stringWithFormat：@“Some foo％d”];
这可能适用于32位int，但在64位平台上会失败。
编译二进制文件时是否有任何警告？
答案 1 :(得分：0)
对stringURL的引用确实是nil，导致了崩溃。这是由于愚蠢的竞争条件。