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));
}
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;
}