protected override void OnElementChanged(VisualElementChangedEventArgs e)
{
base.OnElementChanged(e);
if (e.OldElement != null || Element == null)
{
return;
}
try {
// - Implement the customisation here
Console.WriteLine("Hello from iOS app");
AuthPage authPage = (AuthPage)this.Element;
// - Setup the facebook auth screen
authPage.showFacebookAuth = () => {
Console.WriteLine("This is Facebook Auth Screen");
var auth = new OAuth2Authenticator(
clientId: NetworkingConstants.FACEBOOK_APP_ID,
scope: "",
authorizeUrl: new Uri(NetworkingConstants.FACEBOOK_AUTH_URL),
redirectUrl: new Uri(NetworkingConstants.FACEBOOK_REDIRECT_URL));
auth.AllowCancel = true;
// - If authorization succeeds or is canceled, .Completed will be fired.
auth.Completed += (sender, eventArgs) =>
{
// - We presented the UI, so it's up to us to dismiss it.
this.DismissViewController(true, null);
// - And call the handler for acces token
authPage.didGetFacebookAccessToken(eventArgs.Account.Properties["access_token"]);
};
this.PresentViewController(auth.GetUI(), true, null);
};
// - Setup the google auth screen
authPage.showGoogleAuth = () => {
Console.WriteLine("This is Google Auth Screen");
};
} catch (Exception ex) {
System.Diagnostics.Debug.WriteLine(@" ERROR: ", ex.Message);
}
}