Users cannot add topic pages to the mobile screen (when opening a topic)

nat · October 8, 2024, 9:11am

I don’t think that is possible unfortunately.

The “Add to Home Screen” functionality requires every web app to define a start_url, in which we have defined it as the root URL of your forum.

Here’s what our a2hs manifest looks like:

github.com

discourse/discourse/blob/229773e7a8603ef85fd25e28980be9961832a0d5/app/controllers/metadata_controller.rb#L53


      
          icon_url_base =
            UrlHelper.absolute("/svg-sprite/#{Discourse.current_hostname}/icon/#{primary_color}")
          
          manifest = {
            name: SiteSetting.title,
            short_name:
              SiteSetting.short_title.presence ||
                SiteSetting.title.truncate(12, separator: " ", omission: ""),
            description: SiteSetting.site_description,
            display: display,
            start_url: Discourse.base_path.present? ? "#{Discourse.base_path}/" : "/",
            background_color: "##{ColorScheme.hex_for_name("secondary", scheme_id)}",
            theme_color: "##{ColorScheme.hex_for_name("header_background", scheme_id)}",
            icons: [],
            share_target: {
              action: "#{Discourse.base_path}/new-topic",
              method: "GET",
              enctype: "application/x-www-form-urlencoded",
              params: {
                title: "title",
                text: "body",

Topic		Replies	Views
Add to homescreen banner on Android Announcements feedback	71	19369	December 2, 2017
Criteria to ensure Discourse instance will work as a Chrome webapp on mobile Support	13	1887	June 8, 2024
Orientating users with a Discourse 'homepage' UX	24	3930	November 4, 2019
Fully support Android Chrome's "Add to Homescreen" Feature	29	14029	April 22, 2016
Force Mobile Homepage Theme component	17	5748	July 15, 2025

Users cannot add topic pages to the mobile screen (when opening a topic)

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