/**
* 判断系统的网络是否可用
* @return
*/
private bool isNetworkConnected()
{
bool net = false;
ConnectivityManager connManager = (ConnectivityManager)this.GetSystemService(ConnectivityService);
// connManager.ActiveNetworkInfo ==null 手机无法连接网络
if (connManager.ActiveNetworkInfo != null)
{
//获得 wifi 连接管理
NetworkInfo networkInfo = connManager.GetNetworkInfo(ConnectivityType.Wifi);
//获得 GPRS 连接管理
NetworkInfo gp = connManager.GetNetworkInfo(ConnectivityType.Mobile);
if (networkInfo != null && networkInfo.IsAvailable != false )
{
Toast.MakeText(this, "WIFI打开！", ToastLength.Long).Show();
net = true;
}
// gp.IsConnected==false 有信号无网络
if (gp!=null && gp.IsConnected != false)
{
Toast.MakeText(this, "有信号gprs打开！", ToastLength.Long).Show();
net = true;
}
}
return net;
}