App links: page action or menu option to open the current page in an external app

[jhugman]

We can already detect if a URL is openable by a user-installed external app.

Show a page action and menu option to open the current page in that app.

Bonus: If the user has already selected a default, then show the app icon and name.

┆Issue is synchronized with this Jira Task

[jhugman]

@topotropic This is the simplest path forward. Where should this bit of UI go?

[jhugman]

@topotropic have talked about this with @shortlander, re: using the existing permission prompts.

we considered using a similar UI as the one we use for permissions (bottom sheet) --- when you open permission.site with FF Preview and enable camera for example you can see it. Another idea that floated around was something simpler, like when you longpress on a link, open it in the background and see the snackbar that gives you the option to switch to the tab.

TL; DR

1. use the existing permission style prompts
2. use a snackbar.

@shorlander: do you have any preference?

[jhugman]

@shorlander : "Can we put this in a Quick Action Bar, perhaps using the app's icon".

Yes, but we'll also need a default icon when the user has not selected yet selected an app, and there are two non-browser apps available.

[jhugman]

[jhugman]

[abodea]

Hi @jhugman, I did some testing on the following websites/apps on the Latest Nightly build 7/31 using a Samsung Galaxy S10+(Android 9), Google Pixel 3a XL(Android 9).
I marked them with works/doesn't work meaning that the button Open in app appear or not on the website.
There are few websites that works correctly like your example with Reddit.
I have two questions:
It is fine do keep this bug for tracking all the examples below, or should I add another one in the Fenix repo regarding this issue?
Should we have for all websites a redirection to the play store in case we don't have the app installed?

For more details please see the information below:

Command	Description/Status
Whatsapp	Need to tap on "Get it on Google Play" resulting a redirect within the browser to the playstore, the "Open in App" is displayed and by pressing it you are redirected to the playstore app.
TikTok	Doesn't work
Youtube Music	Works
Youtube	Works
Instagram	Need to tap on "Get it on Google Play" resulting a redirect within the browser to the playstore, the "Open in App" is displayed and by pressing it you are redirected to the playstore app.
Facebook	Doesn't work
Facebook Messenger	Need to tap on "Get it on Google Play" resulting a redirect within the browser to the playstore, the "Open in App" is displayed and by pressing it you are redirected to the playstore app.
OLX	Works
Pinterest	Works
Netflix	Doesn't work
Booking	Doesn't work, from the the lower section of the page "Continue in the app" by tapping "Open App" redirects you to the Playstore app
AirBnb	Works
Ebay	List all new or modified files
AliExpress	Doesn't work
AliBaba	Doesn't work
Tumblr	Works