pos-xamarin 使用Xamarin.Forms的Pangpang POS客户端。 如何使用PosSDK 获得PosSDK服务: PosSDK PosSDK => DependencyService . Get < PosSDK>(); 调用API var result = await PosSDK . CallAPI < Account>( " /account/login " , new { tenant = this . Tenant , username = this . Username , password = this . Passwo