ios - Xamarin 表单检查 iOS 上的 wifi 连接
<p><p>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:</p>
<pre><code>public bool IsWifiConnected()
{
IEnumerable<ConnectionProfile> profiles = Connectivity.ConnectionProfiles;
return profiles.Contains(ConnectionProfile.WiFi);
}
</code></pre>
<p>不幸的是，该方法从连接开始建立并且尚未完全准备好(仍在握手)的那一刻起返回 true。有没有办法检查连接是否完全准备好？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>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:</p>
<pre><code>public bool IsWifiConnected()
{
var profiles = Connectivity.ConnectionProfiles;
var access = Connectivity.NetworkAccess;
if (profiles.Contains(ConnectionProfile.WiFi) && access == NetworkAccess.Internet)
{
return true;
}
else
{
return false;
}
}
</code></pre>
<p>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:</p>
<pre><code>public class ConnectivityTest
{
public ConnectivityTest()
{
// Register for connectivity changes, be sure to unsubscribe when finished
Connectivity.ConnectivityChanged += Connectivity_ConnectivityChanged;
}
void Connectivity_ConnectivityChanged(object sender, ConnectivityChangedEventArgse)
{
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.
}
}
}
</code></pre>
<p>请注意，您可以在 <a href="https://learn.microsoft.com/en-us/xamarin/essentials/connectivity?context=xamarin%2Fxamarin-forms&tabs=android" rel="noreferrer noopener nofollow">https://learn.microsoft.com/en-us/xamarin/essentials/connectivity?context=xamarin%2Fxamarin-forms&tabs=android</a> 上的 Xamarin Essentials 文档中找到所有这些示例。 </p></p>
<p style="font-size: 20px;">关于ios - Xamarin 表单检查 iOS 上的 wifi 连接，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/54374861/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/54374861/
</a>
</p>
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