net affirm

public class NetHelper {


/**
* 判断是否联网网络
* @param context
* @return
*/
public static boolean IsHaveInternet(final Context context)
{
try
{
ConnectivityManager manger = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo info = manger.getActiveNetworkInfo();
return (info != null && info.isConnected());
} catch (Exception e) {
return false;
}
}

}