Wifi Connect-Disconnect Listener

Android WiFi State Listener

Depending on what you mean by "connections/disconnections" you might not be observing the correct broadcast action. ConnectivityManager.CONNECTIVITY_ACTION triggers when a default connection is fully established or lost.

You might be more interested in WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION or WifiManager.SUPPLICANT_STATE_CHANGED_ACTION, which trigger as the association state of the WiFi radio changes.

I have tried some things with BroadcastReceivers but failed

If the above actions don't satisfy your needs, I would encourage you to elaborate on the failures you are experiencing.

I need a event to detect Internet connect/disconnect

This is all covered (including the difference between being on the network and having the network connect you to the Internet) at http://msdn.microsoft.com/en-us/library/ee264321(VS.85).aspx. I hope you meant to put that Windows 7 tag on your post, because all this is pretty new.

The key is INetworkListManager.get_IsConnectedToInternet() which pretty much does what it says on the tin. You have to jump around a bit to register for the events etc. The Code Pack wraps some of that up for you and has a network sample you can adapt.

Android: Internet connectivity change listener

Try this

public class NetworkUtil {
    public static final int TYPE_WIFI = 1;
    public static final int TYPE_MOBILE = 2;
    public static final int TYPE_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_NOT_CONNECTED = 0;
    public static final int NETWORK_STATUS_WIFI = 1;
    public static final int NETWORK_STATUS_MOBILE = 2;

    public static int getConnectivityStatus(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (null != activeNetwork) {
            if(activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
                return TYPE_WIFI;

            if(activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
                return TYPE_MOBILE;
        } 
        return TYPE_NOT_CONNECTED;
    }

    public static int getConnectivityStatusString(Context context) {
        int conn = NetworkUtil.getConnectivityStatus(context);
        int status = 0;
        if (conn == NetworkUtil.TYPE_WIFI) {
            status = NETWORK_STATUS_WIFI;
        } else if (conn == NetworkUtil.TYPE_MOBILE) {
            status = NETWORK_STATUS_MOBILE;
        } else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
            status = NETWORK_STATUS_NOT_CONNECTED;
        }
        return status;
    }
}

And for the BroadcastReceiver

public class NetworkChangeReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(final Context context, final Intent intent) {

        int status = NetworkUtil.getConnectivityStatusString(context);
        Log.e("Sulod sa network reciever", "Sulod sa network reciever");
        if ("android.net.conn.CONNECTIVITY_CHANGE".equals(intent.getAction())) {
            if (status == NetworkUtil.NETWORK_STATUS_NOT_CONNECTED) {
                new ForceExitPause(context).execute();
            } else {
                new ResumeForceExitPause(context).execute();
            }
       }
    }
}

Don't forget to put this into your AndroidManifest.xml

 <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
 <uses-permission android:name="android.permission.INTERNET" />
 <receiver
        android:name="NetworkChangeReceiver"
        android:label="NetworkChangeReceiver" >
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE" />
            <action android:name="android.net.wifi.WIFI_STATE_CHANGED" />
        </intent-filter>
    </receiver>

Hope this will help you Cheers!

Android - Correct way to detect disconnecting from a particular wifi ssid?

NETWORK_STATE_CHANGED_ACTION was the answer in the end. The device having the problem registering this event started working when another app (which would also be listening for similar events) was uninstalled! No idea how or why an app could block events registering with another app. The final solution ended up being;

    String action = intent.getAction();

    if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION))
    {
        WifiManager manager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);
        NetworkInfo networkInfo = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
        NetworkInfo.State state = networkInfo.getState();

        if(state == NetworkInfo.State.CONNECTED)
        {
            String connectingToSsid = manager.getConnectionInfo().getSSID().replace("\"", "");
            WifiStateHistory.recordConnectedSsid(connectingToSsid);
//connected
        }

        if(state == NetworkInfo.State.DISCONNECTED)
        {
            if(manager.isWifiEnabled())
            {
                String disconnectedFromSsid = WifiStateHistory.getLastConnectedSsid();
//disconnected
            }
        }
    }

Wifi-Direct always disconnects after thirty minutes

This appears to be a bug in the LineageOS build I am using, as it only happens when the tablet is the group owner. When the phone is the group owner, the disconnection doesn't happen.

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