ios - 在 Xamarin.IOS 中使用 Office 365 API 时出现 NullReferenceException

首先我遇到了这个问题: Using Office 365 API in Xamarin.Android

现在在 Xamarin IOS 中测试相同，我得到了另一个

{System.NullReferenceException: Object reference not set to an instance of an object
  at Microsoft.Office365.OAuth.Authenticator.GetRefreshToken (System.String resource) [0x00000] in <filename unknown>:0 
  at Microsoft.Office365.OAuth.Authenticator+<GetAuthenticationResult>d__c.MoveNext () [0x00000] in <filename unknown>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:62 
  at System.Runtime.CompilerServices.TaskAwaiter`1[Microsoft.Office365.OAuth.AuthenticationInfo].GetResult () [0x00034] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/TaskAwaiter_T.cs:59 
  at Microsoft.Office365.OAuth.Authenticator+<AuthenticateAsync>d__6.MoveNext () [0x00000] in <filename unknown>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000b] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.ExceptionServices/ExceptionDispatchInfo.cs:62 
  at System.Runtime.CompilerServices.TaskAwaiter`1[Microsoft.Office365.OAuth.AuthenticationInfo].GetResult () [0x00034] in /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Runtime.CompilerServices/TaskAwaiter_T.cs:59 
  at Office365InXamarinApps.ViewModel.ContactsViewModel+<EnsureClientCreated>d__9.MoveNext () [0x00046] in c:\DevApps\GitHub\Office365InXamarinApps\scr\Office365InXamarinApps\Office365InXamarinApps\ViewModel\ContactsViewModel.cs:76 }

代码在这里:https://github.com/saramgsilva/Office365InXamarinApp

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Best Answer-推荐答案

Office 365 API Preview 有问题，我无法使用它，因此我使用 Office 365 REST API 创建了另一个演示。

https://github.com/saramgsilva/Office365RESTAPISample

关于ios - 在 Xamarin.IOS 中使用 Office 365 API 时出现 NullReferenceException，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24541318/