ios - Xamarin 表单检查 iOS 上的 wifi 连接

Question

我正在开发一个以编程方式连接到热点的应用程序。我需要检查连接是否完全建立，为此我使用 Xamarin.Essentials.Connectivity 包和以下方法:

public bool IsWifiConnected()
{
    IEnumerable<ConnectionProfile> profiles = Connectivity.ConnectionProfiles;
    return profiles.Contains(ConnectionProfile.WiFi);
}

不幸的是，该方法在连接开始建立且尚未完全准备好(仍在握手)时返回 true。有没有办法检查连接是否已完全准备好？

Answer 1

是的，您也可以使用 Xamarin.Essentials.Connectivity 来做到这一点。按照您的示例，您可以执行以下操作:

public bool IsWifiConnected()
{
    var profiles = Connectivity.ConnectionProfiles;
    var access = Connectivity.NetworkAccess;

    if (profiles.Contains(ConnectionProfile.WiFi) && access == NetworkAccess.Internet)
    {
         return true;
    }
    else
    {
         return false;
    }
}

您还可以在连接配置文件或网络访问更改时收到事件，如下所示:

public class ConnectivityTest
{
     public ConnectivityTest()
     {
         // Register for connectivity changes, be sure to unsubscribe when finished
         Connectivity.ConnectivityChanged += Connectivity_ConnectivityChanged;
     }

     void Connectivity_ConnectivityChanged(object sender, ConnectivityChangedEventArgs  e)
     {
         var access = e.NetworkAccess;
         var profiles = e.ConnectionProfiles;

         if (profiles.Contains(ConnectionProfile.WiFi) && current == NetworkAccess.Internet)
         {
              //Here you can do whatever you want to do when the connection profile is wifi and has internet access.
         }
         else
         {
              //Here you can execute what ever you want if the connection profile is not wifi or has no internet access.
         }
     }
}

请注意，您可以在 https://learn.microsoft.com/en-us/xamarin/essentials/connectivity?context=xamarin%2Fxamarin-forms&tabs=android 上的 Xamarin Essentials 文档中找到所有这些示例。