來自崩潰日誌的更多詳細信息Xamarin.iOS

Question

一個我的測試飛行用戶每次加載應用程序時都會遇到崩潰。我一直無法在我的測試設備或模擬器上重現這一點。

我有崩潰報告，並相信我已完全符號化，在此之後blog。

但是我不能錯誤映射回我的代碼：

Date/Time:   2017-09-04 20:37:34.8879 +0100 
Launch Time:   2017-09-04 20:36:50.5258 +0100 
OS Version:   iPhone OS 10.2.1 (14D27) 
Report Version:  104 

Exception Type: EXC_BAD_ACCESS (SIGABRT) 
Exception Subtype: KERN_INVALID_ADDRESS at 0x0000000000000000 
Triggered by Thread: 0 

Thread 0 name: 
Thread 0 Crashed: 
0 libsystem_kernel.dylib   0x0000000185433014 __pthread_kill + 8 
1 libsystem_pthread.dylib   0x00000001854fb450 pthread_kill + 112 (pthread.c:1366) 
2 libsystem_c.dylib    0x00000001853a7400 abort + 140 (abort.c:91) 
3 planit       0x00000001da8 mono_handle_native_crash (mini-exceptions.c:2548) 
4 libsystem_platform.dylib  0x00000001854f5348 _sigtramp + 52 (sigtramp.c:115) 
5 libsystem_pthread.dylib   0x00000001854fb450 pthread_kill + 112 (pthread.c:1366) 
6 libsystem_c.dylib    0x00000001853a7400 abort + 140 (abort.c:91) 
7 planit       0x0000000101333414 xamarin_printf (runtime.m:2218) 
8 planit       0x0000000101271a9c mono_invoke_unhandled_exception_hook (exception.c:1084) 
9 planit       0x00000001e4 mono_handle_exception_internal (mini-exceptions.c:1886) 
10 planit       0x00000001a84 mono_handle_exception (mini-exceptions.c:2117) 
11 planit       0x000000010122d458 mono_arm_throw_exception (exceptions-arm64.c:411) 
12 planit       0x000000010041c278 throw_exception + 168 
13 planit       0x000000010032289c System_Runtime_ExceptionServices_ExceptionDispatchInfo_Throw + 44 
14 planit       0x00000001003252e4 System_Runtime_CompilerServices_AsyncMethodBuilderCore__c__ThrowAsyncb__6_0_object + 84 
15 planit       0x0000000100c2f808 UIKit_UIKitSynchronizationContext__Postc__AnonStorey0__m__0 (UIKitSynchronizationContext.cs:24) 
16 planit       0x0000000100c1be34 Foundation_NSAsyncActionDispatcher_Apply (NSAction.cs:163) 
17 planit       0x00000001003ecc24 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 244 
18 planit       0x0000000101243010 mono_jit_runtime_invoke (mini-runtime.c:2526) 
19 planit       0x00000001012a7df0 do_runtime_invoke (object.c:2829) 
20 planit       0x00000001012a7d50 mono_runtime_invoke (object.c:2983) 
21 planit       0x00000001000a8204 native_to_managed_trampoline_1(objc_object*, objc_selector*, _MonoMethod**, unsigned int) (registrar.m:25) 
22 planit       0x00000001000a853c -[__MonoMac_NSAsyncActionDispatcher xamarinApplySelector] (registrar.m:4355) 
23 Foundation      0x0000000186f79048 __NSThreadPerformPerform + 340 (NSThread.m:1247) 
24 CoreFoundation     0x0000000186412b5c __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 24 (CFRunLoop.c:1943) 
25 CoreFoundation     0x00000001864124a4 __CFRunLoopDoSources0 + 524 (CFRunLoop.c:1989) 
26 CoreFoundation     0x00000001864100a4 __CFRunLoopRun + 804 (CFRunLoop.c:2821) 
27 CoreFoundation     0x000000018633e2b8 CFRunLoopRunSpecific + 444 (CFRunLoop.c:3113) 
28 GraphicsServices    0x0000000187df2198 GSEventRunModal + 180 (GSEvent.c:2245) 
29 UIKit       0x000000018c3857fc -[UIApplication _run] + 684 (UIApplication.m:2650) 
30 UIKit       0x000000018c380534 UIApplicationMain + 208 (UIApplication.m:4092) 
31 planit       0x0000000100c6fc10 wrapper_managed_to_native_UIKit_UIApplication_UIApplicationMain_int_string___intptr_intptr (/<unknown>:1) 
32 planit       0x0000000100c2de8c UIKit_UIApplication_Main_string___intptr_intptr (UIApplication.cs:79) 
33 planit       0x0000000100c2de4c UIKit_UIApplication_Main_string___string_string (UIApplication.cs:63) 
34 planit       0x00000001000cbef4 planit_Application_Main_string__ (Main.cs:13) 
35 planit       0x00000001003ecc24 wrapper_runtime_invoke_object_runtime_invoke_dynamic_intptr_intptr_intptr_intptr + 244 
36 planit       0x0000000101243010 mono_jit_runtime_invoke (mini-runtime.c:2526) 
37 planit       0x00000001012a7df0 do_runtime_invoke (object.c:2829) 
38 planit       0x00000001012aa7bc do_exec_main_checked (object.c:4624) 
39 planit       0x000000010122cc68 mono_jit_exec (driver.g.c:1040) 
40 planit       0x0000000101337168 xamarin_main (monotouch-main.m:482) 
41 planit       0x00000001000c75bc main (main.m:79) 
42 libdyld.dylib     0x00000001853215b8 start + 4 

任何人都可以點我在正確的方向？

Answer 1

我們跟蹤異常情況的方式是讓我們的測試人員查看通過掛接到iOS的全局異常處理程序並使用我們編寫的類將信息記錄到IO的應用程序。

類：

using System; 
using System.IO; 
using UIKit; 

namespace namespace.TestingLogs 
{ 
    public static class ApplicationLog 
    { 
     private static string _filename = "LogFile-"; 

     public static void CreateFile(string SessionFilename) 
     { 
      _filename += SessionFilename; 

      var docs = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); 
      var filename = Path.Combine(docs, _filename); 
      var Device = UIDevice.CurrentDevice; 
      File.AppendAllText(filename, ("======Device Information======" + Environment.NewLine)); 
      File.AppendAllText(filename, ("Battery Level: " + Device.BatteryLevel + Environment.NewLine)); 
      File.AppendAllText(filename, ("Model: " + Device.Model + Environment.NewLine)); 
      File.AppendAllText(filename, ("System Version: " + Device.SystemVersion + Environment.NewLine)); 
      File.AppendAllText(filename, ("[" + DateTime.UtcNow.ToString() + "]" + "======Start Log======" + Environment.NewLine + Environment.NewLine)); 
      Console.WriteLine("[] = " + filename); 
     } 

     public static void AppendFile(string appendText) 
     { 
      var txt = Environment.NewLine + appendText; 

      var docs = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments); 
      var filename = Path.Combine(docs, _filename); 
      File.AppendAllText(filename, txt); 
     } 
    } 

    public class ExitAppException : Exception 
    { 
     public ExitAppException() { } 
     public ExitAppException(string message) : base(message) { } 
     public ExitAppException(string message, Exception inner) : 
     base(message, inner) 
     { } 
    } 
} 

鉤到全球未處理的事件做在 'FinishedLaunching' 方法如下AppDelegate.cs：

 AppDomain.CurrentDomain.UnhandledException += (object sender, UnhandledExceptionEventArgs e) => 
     { 
      try 
      { 
       //Record the error in our application logs 

       ApplicationLog.AppendFile(
        DateTime.Now.ToString() + " : " + "[CRITICAL GLOBALLY HANDLED EXCEPTION] - Critical exception has been hit! - Message: " + e.ExceptionObject + 
         Environment.NewLine + Environment.NewLine + 
          "========= Critcal Error has been hit, application closed =========" + 
           Environment.NewLine + Environment.NewLine 
        ); 
      } 
      catch (Exception genEx) 
      { 
       var Error = genEx.Message; 
      } 
     }; 

無論使用哪種寫法最適合你明顯。隨意使用字符串生成器而不是我們這樣做，但一般的概念是相同的。然後，用戶可以下載「macgo iphone explorer」（它是免費的）並訪問應用程序文檔文件夾，日誌文件將會在那裏，然後他們只需通過電子郵件發送給您。希望這有所幫助。