Xamarin Forms iOS中的网络连接更改时如何获得通知 [英] How to get notified when network connection changes in Xamarin Forms iOS

问题描述

我的应用程序中有一个要求，我需要显示图像以指示该应用程序是否已连接到网络.我能够使用James Montemagno的Connectivity Plugin实现此功能，但我想使用可达性类.当我实现Reachability类时，永远不会触发OnChange方法.当我打开或关闭wifi时，永远不会调用OnChange.

I have a requirement in my app where I need to display an image to indicate whether the app is connected to network or not.I was able to do it using the Connectivity Plugin by James Montemagno.But I want to implement it using Reachability class.When I implement the Reachability class the OnChange method never fires.When I turn ON or turn OFF the wifi the OnChange is never called.Can somebody guide me on how to achieve this?

 public static event EventHandler ReachabilityChanged;
static void OnChange(NetworkReachabilityFlags flags)
        {
            ReachabilityChanged?.Invoke(null, EventArgs.Empty);
        }

推荐答案

在PCL App()中放置以下代码

Put below code in your PCL App()

CrossConnectivity.Current.ConnectivityChanged += (object sender, Plugin.Connectivity.Abstractions.ConnectivityChangedEventArgs e) =>
{
    bool IsInternetConnected = e.IsConnected;
}

您可以使用Messaging Center传递连接状态，请参考此

You can pass connectivity status using Messaging Center refer this

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