if mobile data is on and wifi is also on but does not have data.then how to send request by WIFI

Question

Use this code if you want to use only Wifi. Please ensure that android version should be greater then 21.

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static void stayOnWifi(Context context) {
    final ConnectivityManager connection_manager =
            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkRequest.Builder request = new NetworkRequest.Builder();
    request.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);

    connection_manager.registerNetworkCallback(request.build(), new ConnectivityManager.NetworkCallback() {

        @Override
        public void onAvailable(Network network) {
            ConnectivityManager.setProcessDefaultNetwork(network);
        }
    });
}

score 4 · Answer 1 · edited Feb 02 '20 at 08:15

Use when you want to send request from WIFI if wifi has not data.

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static void stayOnWifi(Context context) {
    final ConnectivityManager connection_manager =
            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkRequest.Builder request = new NetworkRequest.Builder();
    request.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);

    connection_manager.registerNetworkCallback(request.build(), new ConnectivityManager.NetworkCallback() {

        @Override
        public void onAvailable(Network network) {
            ConnectivityManager.setProcessDefaultNetwork(network);
        }
    });
}

use this method when you want to send request from wifi if wifi does not have any data. the issue of above code is when you forcefully set the data use priority.if we set wifi priority app will unable to use mobile data and if set priority for mobile data data then app will not able to use wifi no matter wifi has data or not.

Solution For Problem We should use Broadcast,Means when we want to send request from wifi which has no data use above method and after completing use the broadcast,it sets the available data which can be mobile or wifi. means restriction will remove.

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

public static void stayOnMobileData(Context context) {
    final ConnectivityManager connection_manager =
            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkRequest.Builder request = new NetworkRequest.Builder();
    request.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
    request.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
    connection_manager.registerNetworkCallback(request.build(), new ConnectivityManager.NetworkCallback() {
        @Override
        public void onAvailable(Network network) {
            ConnectivityManager.setProcessDefaultNetwork(network);
        }
    });
}

Broadcast

public class NetworkStateChangeBroadcast extends BroadcastReceiver {
    @RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)

    @Override
    public void onReceive(Context context, Intent intent) {
        if (in.bets.bettywifi.ui.common.BaseActivity.checkNetworkStatus(context)) {
            final ConnectivityManager connMgr = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);

            final android.net.NetworkInfo wifi = connMgr
                    .getNetworkInfo(ConnectivityManager.TYPE_WIFI);

            final android.net.NetworkInfo mobile = connMgr
                    .getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
            if (wifi.isConnected()) {

                BaseActivity.stayOnWifi(context);
            } else if (mobile.isConnected()) {

                BaseActivity.stayOnMobileData(context);

            }
        }
    }
}

score 0 · Answer 2 · edited Feb 02 '20 at 08:15

@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public static void stayOnWifi(Context context) {
    final ConnectivityManager connection_manager =
            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkRequest.Builder request = new NetworkRequest.Builder();
    request.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);

    connection_manager.registerNetworkCallback(request.build(), new ConnectivityManager.NetworkCallback() {

        @Override
        public void onAvailable(Network network) {
            ConnectivityManager.setProcessDefaultNetwork(network);
        }
    });
}

if mobile data is on and wifi is also on but does not have data.then how to send request by WIFI

2 Answers2

Solution For Problem We should use Broadcast,Means when we want to send request from wifi which has no data use above method and after completing use the broadcast,it sets the available data which can be mobile or wifi. means restriction will remove.

Broadcast