onRedirectUri doesn't work for Ionic

I’ve been trying to set up Auth0 login within my Ioniv v1 project but it doesn’t seem to work with the steps given in documentation - https://auth0.com/docs/quickstart/native/ionic/01-login

After successful login and redirect to the app, the ‘onRedirectUri’ method never gets called. I also tried passing a callback to the ‘login’ function of my Auth0 service (where the login session is initiated) but that callback too, never gets fired.
It is really frustrating and I would appreciate if someone can quickly help me through this issue.
Below is the relevant code -

    $ionicPlatform.ready(function () {
        function handleUrl(url) {
            console.log('open url ', url);
            return $state.go('login');
        window.handleOpenURL = handleUrl;

function login(callback) {
var client = new Auth0Cordova(auth0Config);

    var options = {
        scope: 'openid profile offline_access'

    client.authorize(options, function (err, authResult) {
        if (err) {
            throw new Error(err);
        if (authResult && authResult.accessToken && authResult.idToken) {