How to open app from a link without asking user to decide between browser or app, just open my app immediately

Question

I have this intent-filter that I want that every time user clicks a link to eeexample.com to open my app:

Answer 1

Here are a couple of places you can use to verify that .well-known/assetlinks.json is accessible, which is an important prerequisite for removing the disambiguation dialog.

https://developers.google.com/digital-asset-links/tools/generator

https://digitalassetlinks.googleapis.com/v1/statements:list?source.web.site=https://YOUR_WEBSITE&relation=delegate_permission/common.handle_all_urls

As for my case, despite everything checks, the disambiguation dialog just wouldn't go away. It turned out that I was also using FirebaseUI Auth for GitHub (https://github.com/firebase/FirebaseUI-Android/tree/master/auth), which uses firebase_web_host; if it's defined something other than the value defined in android:host, then android:autoVerify also fails as well.

The problem was, firebase_web_host was buried somewhere outside of my code, so it wasn't exactly obvious why android:autoVerify was failing. One easy way to find out is to check adb log when installing the app; you should see something like

IntentFilterIntentSvc: Verification .. complete. Success:true. Failed hosts:.

If you see Success:false, it should show which hosts failed, so that should give you a clue on where to look.