I'm struggling with a case where I've done good research on how to it. It works for everyone but not for me!!
Environment:
So I've created a project and selected Progressive Web Application (PWA) from the get-go to have everything I need auto-generated. Also made the app ASP.NET Core hosted.
The startup project is Rihal.Server in standalone mode (not IIS or Docker).
When I launch the application I get the default prompt in Chrome to install app. When I click the "+" icon I get the default Blazor icon and the app's name "Rihal". So far so good. When I change the icon and name, I still keep getting the defaults!
It's like the manifest is completely ignored.
I've developed other parts of this app and then came around to change the icon and name:
Replaced the default icon (same icon used for 192 at a smaller resolution)
Updated my manifest.json for the 192 size and name/short name: (I've also tried adding multiple sizes).
{ "name": "Rihal Timesheet", "short_name": "Timesheet", "start_url": "./", "display": "standalone", "background_color": "#ffffff", "theme_color": "#03173d", "icons": [ { "src": "icon-512.png", "type": "image/png", "sizes": "512x512" }, { "src": "icon-192.png", "type": "image/png", "sizes": "192x192" } ] }
Other files if relevant:
Rihal.Client service-worker.js
// In development, always fetch from the network and do not enable offline support. // This is because caching would make development more difficult (changes would not // be reflected on the first load after each change). self.addEventListener('fetch', () => { });
Rihal.Client service-worker.published.js
// Caution! Be sure you understand the caveats before publishing an application with // offline support. See https://aka.ms/blazor-offline-considerations self.importScripts('./service-worker-assets.js'); self.addEventListener('install', event => event.waitUntil(onInstall(event))); self.addEventListener('activate', event => event.waitUntil(onActivate(event))); self.addEventListener('fetch', event => event.respondWith(onFetch(event))); const cacheNamePrefix = 'offline-cache-'; const cacheName = `${cacheNamePrefix}${self.assetsManifest.version}`; const offlineAssetsInclude = [ /\.dll$/, /\.pdb$/, /\.wasm/, /\.html/, /\.js$/, /\.json$/, /\.css$/, /\.woff$/, /\.png$/, /\.jpe?g$/, /\.gif$/, /\.ico$/ ]; const offlineAssetsExclude = [ /^service-worker\.js$/ ]; async function onInstall(event) { console.info('Service worker: Install'); // Fetch and cache all matching items from the assets manifest const assetsRequests = self.assetsManifest.assets .filter(asset => offlineAssetsInclude.some(pattern => pattern.test(asset.url))) .filter(asset => !offlineAssetsExclude.some(pattern => pattern.test(asset.url))) .map(asset => new Request(asset.url, { integrity: asset.hash })); await caches.open(cacheName).then(cache => cache.addAll(assetsRequests)); } async function onActivate(event) { console.info('Service worker: Activate'); // Delete unused caches const cacheKeys = await caches.keys(); await Promise.all(cacheKeys .filter(key => key.startsWith(cacheNamePrefix) && key !== cacheName) .map(key => caches.delete(key))); } async function onFetch(event) { let cachedResponse = null; if (event.request.method === 'GET') { // For all navigation requests, try to serve index.html from cache // If you need some URLs to be server-rendered, edit the following check to exclude those URLs const shouldServeIndexHtml = event.request.mode === 'navigate'; const request = shouldServeIndexHtml ? 'index.html' : event.request; const cache = await caches.open(cacheName); cachedResponse = await cache.match(request); } return cachedResponse || fetch(event.request); }
Rihal.Client csproj file
<Project Sdk="Microsoft.NET.Sdk.Web"> <PropertyGroup> <TargetFramework>netstandard2.1</TargetFramework> <RazorLangVersion>3.0</RazorLangVersion> <ServiceWorkerAssetsManifest>service-worker-assets.js</ServiceWorkerAssetsManifest> </PropertyGroup> <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'"> <DebugType>embedded</DebugType> <DebugSymbols>true</DebugSymbols> </PropertyGroup> <ItemGroup> <PackageReference Include="Microsoft.AspNetCore.Blazor.HttpClient" Version="3.2.0-preview3.20168.3" /> <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="3.2.0" /> <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Build" Version="3.2.0" PrivateAssets="all" /> <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="3.2.0" PrivateAssets="all" /> <PackageReference Include="Microsoft.Authentication.WebAssembly.Msal" Version="3.2.0" /> <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.5" /> <PackageReference Include="System.Net.Http.Json" Version="3.2.1" /> </ItemGroup> <ItemGroup> <ProjectReference Include="..\Shared\Rihal.Shared.csproj" /> </ItemGroup> <ItemGroup> <ServiceWorker Include="wwwroot\service-worker.js" PublishedContent="wwwroot\service-worker.published.js" /> </ItemGroup> </Project>
Open the browsers debug window. Chrome or the new Edge. While it is open right click the refresh button on your page select => Empty cache and hard reload.
I found you can do this in the clients csproj file. Forcing and update in the service worker.
<Target Name="PublishServiceWorker" AfterTargets="CopyFilesToPublishDirectory">
<WriteLinesToFile File="$(PublishDir)wwwroot\service-worker.js" Lines="/* $([System.Guid]::NewGuid()) */" />
</Target>