azure 移动服务无法在 xamarin.android 上运行

Question

I'm trying to implement Azure Mobile Services in my Xamarin.Forms app.

I'm following this link and it works on iOS but not on Android. It throws this exception:

MobileServiceInvalidOperationException - "The server did not provide a response with the expected content."

I have tried switching between HTTP and HTTPS but could not get it working. It works on Android (native) as well, just not on Xamarin.Android

Any help?

Answer 1

Your issue is tracked here , and seems to be because of the following:

we don't support.Net Core 2.1 in the SDK today. Unfortunately, we don't have a workaround today and like Ela said, the we don't have an ETA for a new release or other SDK to use for.Net Core 2.1 compatibility yet, so your only workaround is to stick with.Net Core 2.0 for now.

There seems to be a temporary work around here , by brendanzagaeski to in the call to new MobileServiceClient():

• Either pass in an HttpClientHandler instance
• Or pass in an instance of AndroidClientHandler

It seems like AndroidClientHandler is the one that works the most often.

Answer 2

Check if "microsoft.azure.mobile.client" is referenced on your project. If not, try installing a lower version of the "microsoft.azure.mobile.client" through nuget package on your project add the using directive and then update the "microsoft.azure.mobile.client" through nuget package. And update any pending package.