Look for the Wi - Fi connection?

Hi guys,.

I used the code below to check for the Wi - Fi connection

I referred follow url:http://developer.blackberry.com/cascades/files/webinars/dealing_with_data.pdf

    bool available = false;

    foreach(QNetworkInterface interface,QNetworkInterface::allInterfaces())
    {
        if(interface.flags().testFlag(QNetworkInterface::IsUp) && interface.name().compare(QString("ti0")) == 0)
        {
            available = true;

        }
            }

But it's always fail.

What I'm missing here?

You're right, using the QNetworkInterface class that we are able to determine if the interface is in place, and able to connect to an AP or down (off). But it is not an obvious way to determine the interface is actually connected to an access point.

So far I have has some success by using this code:

bool Downloader::isWifiOnline()
{
    bool available = false;
    foreach(QNetworkInterface interface,QNetworkInterface::allInterfaces())
    {
        if(interface.flags().testFlag(QNetworkInterface::IsUp) && interface.name().compare(QString("tiw_sta0")) == 0)
        {
            if (interface.addressEntries().count() > 1)
                available = true;
        }
    }
    return available;
}

It seems that the interface has a number of addressEntries 2 when it is connected to the access point. and less when it is not. This allows us to determine if the interface has a configured IP address, where probably connected to an access point. It is possible that the user manually configures the ip address of the wireless interface, which can result in a false positive.

For now it seems to work, but I have still a few test cases to try. I hope that others may chime about how they determine if the phone is connected to an access point.

See you soon,.

Eric

Tags: BlackBerry Developers

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