Android客户端无法获取数据，但.net客户端从SignalR服务器获取数据

Apologize for the long question! I am new in SignalR. Please help me to solve my problem. I have SignalR server in web, I am getting data from .net client site but unable to get data from my Android client side. When my debugger arrived to "hub.invoke" is just stop. I have tired a lot with different codes but un-success.Apologize for the long question! I am new in Si