Implementing NetworkStatusBroadcastReceiver example - xamarin.android

Question

I'm attempting to implement a BroadcastReceiver that will tell me when the network status has changed. I'll be using that to sync local data back to the main server when I get internet connection back after losing it.
As a start I was looking at this example: http://fizzylogic.nl/2013/08/17/xamarin-android-by-example-monitoring-the-network-status/
public class NetworkStatusMonitor
{
private NetworkState _state;
public NetworkStatusMonitor ()
{
}
public NetworkState State {
get {
UpdateNetworkStatus ();
return _state;
}
}
public void UpdateNetworkStatus() {
_state = NetworkState.Unknown;
// Retrieve the connectivity manager service
var connectivityManager = (ConnectivityManager)
Application.Context.GetSystemService (
Context.ConnectivityService);
// Check if the network is connected or connecting.
// This means that it will be available,
// or become available in a few seconds.
var activeNetworkInfo = connectivityManager.ActiveNetworkInfo;
if (activeNetworkInfo.IsConnectedOrConnecting) {
// Now that we know it's connected, determine if we're on WiFi or something else.
_state = activeNetworkInfo.Type == ConnectivityType.Wifi ?
NetworkState.ConnectedWifi : NetworkState.ConnectedData;
} else {
_state = NetworkState.Disconnected;
}
}
}
public enum NetworkState
{
Unknown,
ConnectedWifi,
ConnectedData,
Disconnected
}
Then my broadcast receiver looks like this:
[BroadcastReceiver()]
public class NetworkStatusBroadcastReceiver: BroadcastReceiver {
public event EventHandler ConnectionStatusChanged;
public override void OnReceive (Context context, Intent intent)
{
if (ConnectionStatusChanged != null)
ConnectionStatusChanged (this, EventArgs.Empty);
}
}
Now my question is... Where do I initialize this and where do I put the following Start() and Stop() methods?
public event EventHandler NetworkStatusChanged;
public void Start ()
{
if (_broadcastReceiver != null) {
throw new InvalidOperationException (
"Network status monitoring already active.");
}
// Create the broadcast receiver and bind the event handler
// so that the app gets updates of the network connectivity status
_broadcastReceiver = new NetworkStatusBroadcastReceiver ();
_broadcastReceiver.ConnectionStatusChanged += OnNetworkStatusChanged;
// Register the broadcast receiver
Application.Context.RegisterReceiver (_broadcastReceiver,
new IntentFilter (ConnectivityManager.ConnectivityAction));
}
void OnNetworkStatusChanged (object sender, EventArgs e)
{
var currentStatus = _state;
UpdateNetworkStatus ();
if (currentStatus != _state && NetworkStatusChanged != null) {
NetworkStatusChanged (this, EventArgs.Empty);
}
}
public void Stop() {
if (_broadcastReceiver == null) {
throw new InvalidOperationException (
"Network status monitoring not active.");
}
// Unregister the receiver so we no longer get updates.
Application.Context.UnregisterReceiver (_broadcastReceiver);
// Set the variable to nil, so that we know the receiver is no longer used.
_broadcastReceiver.ConnectionStatusChanged -= OnNetworkStatusChanged;
_broadcastReceiver = null;
}
Sorry for the probably silly question but still new to Xamarin and Android.

Answer 1

I think following link is helpful. I get the notification when the network status changes.
networkstatusbroadcastreceiver See Bradley's answer on the bottom of the page.