【发布时间】：2014-05-26 08:44:00
【问题描述】：
我正在开发使用 Parse Android SDK 的应用程序。应用程序在调试模式下正常工作，但是当我在发布模式下编译它时出现以下错误。执行解析查询时发生错误。不是在我初始化解析时。
[MonoDroid] UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
[MonoDroid] at Parse.PlatformHooks+<RequestAsync>d__19.MoveNext () [0x00000] in <filename unknown>:0
[MonoDroid] --- End of stack trace from previous location where exception was thrown ---
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[MonoDroid] at Parse.Internal.InternalExtensions+<>c__DisplayClass7`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]].<OnSuccess>b__6 (System.Threading.Tasks.Task t) [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.TaskActionInvoker+FuncTaskInvoke`1[System.Threading.Tasks.Task`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]]].Invoke (System.Threading.Tasks.Task owner, System.Object state, System.Threading.Tasks.Task context) [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.Task.InnerInvoke () [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.Task.ThreadStart () [0x00000] in <filename unknown>:0
[MonoDroid] --- End of stack trace from previous location where exception was thrown ---
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[MonoDroid] at Parse.Internal.InternalExtensions+<>c__DisplayClass7`1[System.Collections.Generic.IEnumerable`1[Parse.ParseObject]].<OnSuccess>b__6 (System.Threading.Tasks.Task t) [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.TaskActionInvoker+FuncTaskInvoke`1[System.Threading.Tasks.Task`1[System.Collections.Generic.IEnumerable`1[Parse.ParseObject]]].Invoke (System.Threading.Tasks.Task owner, System.Object state, System.Threading.Tasks.Task context) [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.Task.InnerInvoke () [0x00000] in <filename unknown>:0
[MonoDroid] at System.Threading.Tasks.Task.ThreadStart () [0x00000] in <filename unknown>:0
[MonoDroid] --- End of stack trace from previous location where exception was thrown ---
[MonoDroid] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[MonoDroid] at System.Runtime.CompilerServices.TaskAwaiter`1[System.Collections.Generic.IEnumerable`1[Parse.ParseObject]].GetResult () [0x00000] in <filename unknown>:0
[MonoDroid] at ParseDAL.ParseCaller+<Init>c__async0.MoveNext () [0x00000] in <filename unknown>:0
[mono]
[mono] Unhandled Exception:
[mono] System.NullReferenceException: Object reference not set to an instance of an object
[mono] at Parse.PlatformHooks+<RequestAsync>d__19.MoveNext () [0x00000] in <filename unknown>:0
[mono] --- End of stack trace from previous location where exception was thrown ---
[mono] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[mono] at Parse.Internal.InternalExtensions+<>c__DisplayClass7`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]].<OnSuccess>b__6 (System.Threading.Tasks.Task t) [0x00000] in <filename unknown>:0
[mono] at System.Threading.Tasks.TaskActionInvoker+FuncTaskInvoke`1[System.Threading.Tasks.Task`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]]].Invoke (System.Threading.Tasks.Task owner, System.Object state, System.Threading.Tasks.Task context) [0x00000] in <filename unknown>:0
[mono] at System.Threading.Tasks.Task.InnerInvoke
[mono-rt] [ERROR] FATAL UNHANDLED EXCEPTION: System.NullReferenceException: Object reference not set to an instance of an object
[mono-rt] at Parse.PlatformHooks+<RequestAsync>d__19.MoveNext () [0x00000] in <filename unknown>:0
[mono-rt] --- End of stack trace from previous location where exception was thrown ---
[mono-rt] at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x00000] in <filename unknown>:0
[mono-rt] at Parse.Internal.InternalExtensions+<>c__DisplayClass7`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]].<OnSuccess>b__6 (System.Threading.Tasks.Task t) [0x00000] in <filename unknown>:0
[mono-rt] at System.Threading.Tasks.TaskActionInvoker+FuncTaskInvoke`1[System.Threading.Tasks.Task`1[System.Tuple`2[System.Net.HttpStatusCode,System.Collections.Generic.IDictionary`2[System.String,System.Object]]]].Invoke (System.Threading.Tasks.Task owner, System.Object state, System.Threading.Tasks.Task context) [0x00000] in <filename unknown>:0
[mono-rt] at System.Threading.Tasks.Task
以下是代码：
ParseClient.Initialize("App Id", "Dot Net Key");
var userQuery = ParseObject.GetQuery ("Table Name");
var userData = await userQuery.FindAsync ();
foreach (var ud in userData) {
Console.WriteLine ("UD " + ud.Get<string>(Constants.COL_USER_NAME));
}
我尝试了所有链接器选项“不链接”、“链接所有程序集”、“链接 SDK 程序集”。但应用仍然崩溃。
【问题讨论】：
-
是否有可以禁用的发布模式优化？也许其中之一是造成它的原因。
-
当我禁用优化时没有任何改变，感谢您的提示
-
@SeeSharp 当我在“调试”模式下编译后端代码 DLL 并在我的前端项目中引用它们时，它在发布和调试模式下都可以正常工作。当我们将请求发送到服务器（响应挂起）时，有时会发生此异常。并且网络断开或服务器无法访问。我不知道如何处理它，或者停止崩溃。
-
并确保您已在发布模式下添加了“Internet”权限。在调试模式下，Internet 权限会自动添加到清单文件中。
-
我已经发送了一个项目来解析支持，它重新创建了这个问题。重播是他们将推荐合适的团队。所以还在等待。如果有新的东西出现，我会与您保持联系
标签： c# android linq xamarin parse-platform