How to detect when WIFI Connection has been established in Android?

Question

I need to detect when I have network connectivity over WIFI. What broadcast is sent to establish that a valid network connection has been made. I need to validate that a v

Answer 1

Here is an example of my code, that takes into account the users preference of only allowing comms when connected to Wifi.

I am calling this code from inside an IntentService before I attempt to download stuff.

Note that NetworkInfo will be null if there is no network connection of any kind.

private boolean canConnect()
{
    ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);

    boolean canConnect = false;
    boolean wifiOnly = SharedPreferencesUtils.wifiOnly();

    NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
    if(networkInfo != null)
    {
        if(networkInfo.isConnected())
        {
            if((networkInfo.getType() == ConnectivityManager.TYPE_WIFI) ||
               (networkInfo.getType() != ConnectivityManager.TYPE_WIFI && !wifiOnly))
            {
                canConnect = true;
            }
        }
    }

    return canConnect;
}