有谁能帮我解决这个崩溃?它在加载时在某些UIWebView实例之间来回切换时会间歇性地发生 .
崩溃通常略有不同,但它始终是具有类似堆栈跟踪的“WebThread”崩溃 .
这是两个崩溃的相关部分:
Date/Time: 2011-11-08 14:29:01.165 -0500
OS Version: iPhone OS 5.0 (9A334)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000006
Crashed Thread: 4
Thread 4 name: WebThread
Thread 4 Crashed:
0 ??? 0x00000006 0 + 6
1 WebCore 0x32a36154 -[QuickLookHandleAsDelegate connection:didReceiveData:lengthReceived:] + 72
2 QuickLook 0x30bee2c2 -[QLThreadInvoker connectionDidReceiveDataLengthReceived:] + 90
3 CoreFoundation 0x3537a226 -[NSObject performSelector:withObject:] + 38
4 Foundation 0x32ce2752 __NSThreadPerformPerform + 346
5 CoreFoundation 0x353efafe __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 10
6 CoreFoundation 0x353ef2ca __CFRunLoopDoSources0 + 210
7 CoreFoundation 0x353ee070 __CFRunLoopRun + 648
8 CoreFoundation 0x353714d8 CFRunLoopRunSpecific + 296
9 CoreFoundation 0x353713a0 CFRunLoopRunInMode + 100
10 WebCore 0x324c912a _ZL12RunWebThreadPv + 398
11 libsystem_c.dylib 0x35ba1c18 _pthread_start + 316
12 libsystem_c.dylib 0x35ba1ad4 thread_start + 4
Date/Time: 2011-11-08 15:09:01.410 -0500
OS Version: iPhone OS 5.0 (9A334)
Report Version: 104
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000034
Crashed Thread: 4
Thread 4 name: WebThread
Thread 4 Crashed:
0 ??? 0x00000034 0 + 52
1 CoreFoundation 0x3537a226 -[NSObject performSelector:withObject:] + 38
2 Foundation 0x32ce2752 __NSThreadPerformPerform + 346
3 CoreFoundation 0x353efafe __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 10
4 CoreFoundation 0x353ef2ca __CFRunLoopDoSources0 + 210
5 CoreFoundation 0x353ee070 __CFRunLoopRun + 648
6 CoreFoundation 0x353714d8 CFRunLoopRunSpecific + 296
7 CoreFoundation 0x353713a0 CFRunLoopRunInMode + 100
8 WebCore 0x324c912a _ZL12RunWebThreadPv + 398
9 libsystem_c.dylib 0x35ba1c18 _pthread_start + 316
10 libsystem_c.dylib 0x35ba1ad4 thread_start + 4
3 回答
我看到你有iOs 5.0 . 您正在加载Office文档(docx,xls)的文件?
如果是这样,那么你的情况与我的相同 . 此问题仅在具有5.0的系统(此处为iPad和iPad 2)上重现,并且在您尝试在完成加载文件之前停止
UIWebView
对象时会发生此问题 . 是否通过调用stopLoading
或loadRequest
txt文件不会发生这种情况 .
如果是这样,它起源于
WebThread
从行开始:并跳转到一些随机指针,如:
如果您的UIWebView在后台,请检查您的UIWebViewDelegate委托是否仍然有效(即未发布) . 这个问题可能是由于webview尝试调用您的委托
在加载完成后的后台 .
要扩展@ K1w1Geek的答案,问题可能是用户在尝试发送委托回调之前关闭Web视图并且因为它不存在而崩溃 . 这并不一定与加载特定文档类型有关,因为我在浏览Salesforce网站时遇到此崩溃 .
因此,如果您有关闭按钮,请尝试停止加载并在关闭之前将委托设置为nil: