I have a PWA that works on a desktop browser and shows the install icon in the address bar (Brave and Chrome browsers). There is a manifest.json and the service worker (sw.js) is recognised, and DevTools show it as running. So I am reasonably sure my code is complete.
This is my sw.js file:
// Service Worker const cacheName = "paul-address"; const filesToCache = [ "/test/", "/test/index.html", "/test/js/index.js", "/test/styles/styles.css" ]; self.addEventListener("install", e => { console.log("[ServiceWorker**] Install"); e.waitUntil( caches.open(cacheName).then(cache => { console.log("[ServiceWorker**] Caching app shell"); return cache.addAll(filesToCache); }) ); }); self.addEventListener("activate", event => { caches.keys().then(keyList => { return Promise.all( keyList.map(key => { if (key !== cacheName) { console.log("[ServiceWorker] - Removing old cache", key); return caches.delete(key); } }) ); }); }); // sw.js - Cache-first strategy for static assets self.addEventListener('fetch', event => { // Only handle GET requests if (event.request.method !== 'GET') return; const url = new URL(event.request.url); // Cache-first for static assets if (url.pathname.match(/\.(css|js|png|jpg|jpeg|gif|svg|ico)$/)) { event.respondWith( caches.match(event.request) .then(response => { if (response) { console.log('Serving from cache:', event.request.url); return response; } // Fetch and cache new resources return fetch(event.request) .then(response => { // Don't cache non-successful responses if (!response || response.status !== 200 || response.type !== 'basic') { return response; } const responseToCache = response.clone(); caches.open(CACHE_NAME) .then(cache => { cache.put(event.request, responseToCache); }); return response; }); }) .catch(() => { // Return fallback for images if (event.request.destination === 'image') { return caches.match('/images/fallback.png'); } }) ); } }); However, when I test it on an Android device, I get no Install prompt on either Brave or Chrome browsers.
If I manually go to "Add to home screen" it doesn't quite work as I hoped.
On Brave it presents me with two options: Install and Add a shortcut. Even when I select Install despite the screen saying 'Installing ..." it actually only creates a home screen shortcut.
On Chrome it both Installs or Adds a shortcut, depending on which option I select, but not without manually selecting.
What I really want is for Install to work as expected, i.e. to actually install the PWA like an app and a prompt to appear automatically for the user to start the install of the app.
