android判断网络连接

public boolean isConnected(Context mContext){    ConnectivityManager connectManager = null;     connectManager = (ConnectivityManager ) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);    boolean isWifi = connectManager.getNetworkInfo (ConnectivityManager.TYPE_WIFI ).isConnectedOrConnecting();    boolean isEthernet = connectManager.getNNetworkInfo (ConnectivityManager.TYPE_ETHERNET ).isConnectedOrConnecting();    if((isWifi || isEthernet) == false){        return false;    }else       return true;}