Android 10 wifi connection can't reach gateway

Question

I try to make a simple app that connect the smartphone to a specify wifi network and redirect to a webview that show a webserver connected on the wifi network by flashing a

Answer 1

I finally found the solution, just need to add a line that tell the app to bind the process to the wifi network you just connect.

connectivityManager.bindProcessToNetwork(network);

The final code :

public void successFlash(String ssid, String password) {

WifiNetworkSpecifier specifier = new WifiNetworkSpecifier.Builder()
        .setSsid(ssid)
        .setWpa2Passphrase(password)
        .build();

NetworkRequest request = new NetworkRequest.Builder()
        .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
        .removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
        .setNetworkSpecifier(specifier)
        .build();

ConnectivityManager connectivityManager = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);


ConnectivityManager.NetworkCallback networkCallback = new ConnectivityManager.NetworkCallback() {

    public void onAvailable(Network network) {
                connectivityManager.bindProcessToNetwork(network);
                openActivity_redirect_webview();
    }

    @Override
    public void onUnavailable() {
        // do failure processing here..
        openQrcodeActivity();
    }

};
connectivityManager.requestNetwork(request, networkCallback);

}