Flutter Deep Linking (with GoRouter v17.x)

Goal

Implement secure, professional Deep Links (HTTPS Domain Association) to successfully route organic URLs, marketing campaigns (Google Ads), and Magic Link auth payloads directly into a Flutter application. Avoid older Custom URL Schemes (myapp://) whenever possible, guaranteeing a seamless fallback to web browsers if the app is currently uninstalled.

Instructions

1. Android App Links Setup

AndroidManifest.xml

Insert the intent-filter explicitly instructing Android to autoVerify the HTTPS domain. This lives directly inside the core <activity> tag (usually .MainActivity):