Windows phone 被动扩展、Akavache和Refit对于Windows Phone'；内部卡

我想在我的应用程序和应用程序中使用

问题是，根据我的逻辑，Windows Phone不喜欢我这样做，我做了以下几点：

var defer = Observable.Defer(() =>
    BlobCache.Secure.GetAndFetchLatest("Semesters", () => _api.GetSemesters())
        .Select(x => x.Single(semester => semester.AbredgedName == "H2014"))
        .SelectMany(currentSemester => BlobCache.Secure.GetAndFetchLatest("Schedule_" + currentSemester.AbredgedName,
            () => _api.GetSchedule(currentSemester.AbredgedName)))
        );

defer.Subscribe(scheduleVms => {
    foreach (var activity in scheduleVms)
    {
        Debug.WriteLine("1 {0}", activity.Name);
    }
});

Observable.Timer(TimeSpan.FromSeconds(4)).Subscribe(_ =>
{
    defer.Subscribe(scheduleVms => {
        foreach (var activity in scheduleVms)
        {
            Debug.WriteLine("2 {0}", activity.Name);
        }
    });
});

我获取学期（从缓存，然后获取），选择想要的学期（我将H2014放在测试中），获取所选（多个）学期的时间表（从缓存，然后获取，如下所示：

var defer = Observable.Defer(() =>
    BlobCache.Secure.GetAndFetchLatest("Semesters", () => _api.GetSemesters())
        .Select(x => x.Single(semester => semester.AbredgedName == "H2014"))
        .SelectMany(currentSemester => BlobCache.Secure.GetAndFetchLatest("Schedule_" + currentSemester.AbredgedName,
            () => _api.GetSchedule(currentSemester.AbredgedName)))
        );

defer.Subscribe(scheduleVms => {
    foreach (var activity in scheduleVms)
    {
        Debug.WriteLine("1 {0}", activity.Name);
    }
});

Observable.Timer(TimeSpan.FromSeconds(4)).Subscribe(_ =>
{
    defer.Subscribe(scheduleVms => {
        foreach (var activity in scheduleVms)
        {
            Debug.WriteLine("2 {0}", activity.Name);
        }
    });
});

如果我使用的TimeSpan.FromSeconds为5或更多，它会满足我的要求，就像我给Windows Phone呼吸的时间一样。否则（在5-ish下），我得到的例外情况如下：

var defer = Observable.Defer(() =>
    BlobCache.Secure.GetAndFetchLatest("Semesters", () => _api.GetSemesters())
        .Select(x => x.Single(semester => semester.AbredgedName == "H2014"))
        .SelectMany(currentSemester => BlobCache.Secure.GetAndFetchLatest("Schedule_" + currentSemester.AbredgedName,
            () => _api.GetSchedule(currentSemester.AbredgedName)))
        );

defer.Subscribe(scheduleVms => {
    foreach (var activity in scheduleVms)
    {
        Debug.WriteLine("1 {0}", activity.Name);
    }
});

Observable.Timer(TimeSpan.FromSeconds(4)).Subscribe(_ =>
{
    defer.Subscribe(scheduleVms => {
        foreach (var activity in scheduleVms)
        {
            Debug.WriteLine("2 {0}", activity.Name);
        }
    });
});

引发异常：mscorlib.ni.dll中的“System.NotSupportedException” 堆栈跟踪：

at MS.Internal.Modern.InternalNetworkStream.BeginRead(Byte[] buffer, Int32 offset, Int32 count, AsyncCallback callback, Object state)
at System.IO.Stream.<BeginEndReadAsync>b__d(Stream stream, ReadWriteParameters args, AsyncCallback callback, Object state)
at System.Threading.Tasks.TaskFactory`1.FromAsyncTrim[TInstance,TArgs](TInstance thisRef, TArgs args, Func`5 beginMethod, Func`3 endMethod)
at System.IO.Stream.BeginEndReadAsync(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.Stream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
at System.Net.Http.DelegatingStream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
at System.Net.Http.DelegatingStream.ReadAsync(Byte[] buffer, Int32 offset, Int32 count, CancellationToken cancellationToken)
at System.IO.Stream.<CopyToAsyncInternal>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Refit.RequestBuilderImplementation.<>c__DisplayClass2a`1.<<buildCancellableTaskFuncForMethod>b__29>d__2c.MoveNext()

位于MS.Internal.Modern.InternalNetworkStream.beginhead（字节[]缓冲区、Int32偏移量、Int32计数、异步回调、对象状态）
在System.IO.Stream.b_u\d（Stream-Stream、ReadWriteParameters-args、AsyncCallback-callback、Object-state）
在System.Threading.Tasks.TaskFactory`1.FromAsyncTrim[TInstance，TArgs]（TInstance thisRef，TArgs args，Func`5 beginMethod，Func`3 endMethod）
在System.IO.Stream.BeginEndarAsync（字节[]缓冲区，Int32偏移量，Int32计数）
位于System.IO.Stream.ReadAsync（字节[]缓冲区、Int32偏移量、Int32计数、CancellationToken CancellationToken）
位于System.Net.Http.DelegatingStream.ReadAsync（字节[]缓冲区、Int32偏移量、Int32计数、CancellationToken CancellationToken）
位于System.Net.Http.DelegatingStream.ReadAsync（字节[]缓冲区、Int32偏移量、Int32计数、CancellationToken CancellationToken）
在System.IO.Stream.d_uu2.MoveNext（）中
---来自引发异常的上一个位置的堆栈结束跟踪---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess（任务任务）
在System.Runtime.CompilerServices.TaskWaiter.HandleNonSuccessAndDebuggerNotification（任务任务）中
在Refit.RequestBuilderImplementation.c__显示Class2A`1.d__2c.MoveNext（）时

通缉行为：

获取缓存学期->获取该学期的缓存时间表，获取该学期的时间表

获取学期->获取该学期的缓存时间表，获取该学期的时间表

我试过：

• 链条无需重新安装，即可正常工作
• 链接选择了GetSchedule和GetSemesters，但没有链接，并且它可以工作

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如果你们对周围的工作或我做错的事情有什么想法，请告诉我！

你们设法解决了吗？你们设法解决了吗？