Social Media Login Helper (Google, Facebook & Apple)

Make Google, Facebook, and Apple OAuth logins work reliably inside your iOS WebView app with the built-in social login helpers.

Google, Facebook, and other OAuth providers restrict logins from embedded WebViews (e.g., Google's "disallowed_useragent" error). The Social Login Helper built into WebViewGold makes these logins work reliably inside your iOS app — without changing your website's login flow.

How It Works:

You define URL prefixes that appear during the login flow of your web app. As soon as one of these trigger URLs loads, WebViewGold opens the login in a dedicated popup login window with an adjusted user agent that the OAuth provider accepts. After a successful login, the flow returns to your web app automatically. Sign in with Apple (appleid.apple.com) is detected and handled automatically — no configuration needed.

Configuration:

Open Config.swift and define the trigger URL prefixes for your login flow:

var google_login_helper_triggers: [String] = ["https://accounts.google.com", "https://accounts.youtube.com"]
var facebook_login_helper_triggers: [String] = ["https://m.facebook.com", "https://www.facebook.com"]

• google_login_helper_triggers — URL prefixes that load during a Google login on your website.
• facebook_login_helper_triggers — URL prefixes that load during a Facebook login on your website.

To find the right trigger URLs, start your website's login flow in a desktop browser and note which URLs the OAuth redirect goes through.

Open an Auth URL in the External Browser:

As an alternative approach, you can hand over a login URL to the system browser explicitly (the session then lives in the browser, not in the app):

window.location.href = "googlelogin://" + encodeURIComponent("https://accounts.google.com/o/oauth2/v2/auth?...");

WebViewGold decodes the URL after the googlelogin:// prefix and opens it externally.

When to Use the Helper:

Try the simpler options first — in many cases they already solve login issues:

• Open the login domain in an in-app browser tab or external browser via the URL Handling API (e.g., specialLinkHandlingOptions, safariblacklist).
• Set a Custom User Agent (useragent_iphone / useragent_ipad).

If the login still fails in-app, the Social Login Helper triggers are the recommended solution.