Android: Checking network connectivity return not connected when connected to wifi/3g in Broadcast receiver

Question

I want to check if device in connected or not in broadcastReceiver. below is my code :

public boolean isOnline(Context context) {
NetworkInfo info = (Network         


        

Answer 1

I believe the way you can do this is,

Register a Broadcast Receiver with an IntentFilter of ConnectivityManger.Connectivity_Action

private BroadcastReceiver receiverDataChange;

private void registerData(){

    try {
        receiverDataChange = new bcr_ToggleData();
        IntentFilter filterData = new IntentFilter();
        filterData.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
        registerReceiver(receiverDataChange, filterData);

    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    }}

Then in your Broadcast receiver class

public class bcr_ToggleData extends BroadcastReceiver {


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

    String action = intent.getAction();

    if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION)) {

        TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
        int state = telephonyManager.getDataState();
        switch (state){

            case TelephonyManager.DATA_DISCONNECTED: // off
                Log.d("DavidJ", "DISCONNECTED");
                break;

            case TelephonyManager.DATA_CONNECTED: // on
                Log.d("DavidJ", "CONNECTED");
                break;
        }
    }
}

}

This fires off when you go into your settings and turn on/off mobile data.

Hope this helps! :)