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update web for example
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liodali committed Jul 6, 2024
1 parent 94f666c commit c8fd10a
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Showing 4 changed files with 20 additions and 67 deletions.
Binary file added example/web/icons/Icon-maskable-192.png
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Binary file added example/web/icons/Icon-maskable-512.png
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75 changes: 8 additions & 67 deletions example/web/index.html
Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,11 @@
For more details:
* https://developer.mozilla.org/en-US/docs/Web/HTML/Element/base
This is a placeholder for base href that will be replaced by the value of
the `--base-href` argument provided to `flutter build`.
-->
<base href="/">
<base href="$FLUTTER_BASE_HREF">

<meta charset="UTF-8">
<meta content="IE=Edge" http-equiv="X-UA-Compatible">
Expand All @@ -23,77 +26,15 @@
<meta name="apple-mobile-web-app-title" content="example">
<link rel="apple-touch-icon" href="icons/Icon-192.png">

<!-- Favicon -->
<link rel="icon" type="image/png" href="favicon.png"/>

<title>example</title>
<link rel="manifest" href="manifest.json">
</head>
<body>
<!-- This script installs service_worker.js to provide PWA functionality to
application. For more information, see:
https://developers.google.com/web/fundamentals/primers/service-workers -->
<script>
var serviceWorkerVersion = null;
var scriptLoaded = false;
function loadMainDartJs() {
if (scriptLoaded) {
return;
}
scriptLoaded = true;
var scriptTag = document.createElement('script');
scriptTag.src = 'main.dart.js';
scriptTag.type = 'application/javascript';
document.body.append(scriptTag);
}

if ('serviceWorker' in navigator) {
// Service workers are supported. Use them.
window.addEventListener('load', function () {
// Wait for registration to finish before dropping the <script> tag.
// Otherwise, the browser will load the script multiple times,
// potentially different versions.
var serviceWorkerUrl = 'flutter_service_worker.js?v=' + serviceWorkerVersion;
navigator.serviceWorker.register(serviceWorkerUrl)
.then((reg) => {
function waitForActivation(serviceWorker) {
serviceWorker.addEventListener('statechange', () => {
if (serviceWorker.state == 'activated') {
console.log('Installed new service worker.');
loadMainDartJs();
}
});
}
if (!reg.active && (reg.installing || reg.waiting)) {
// No active web worker and we have installed or are installing
// one for the first time. Simply wait for it to activate.
waitForActivation(reg.installing ?? reg.waiting);
} else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
// When the app updates the serviceWorkerVersion changes, so we
// need to ask the service worker to update.
console.log('New service worker available.');
reg.update();
waitForActivation(reg.installing);
} else {
// Existing service worker is still good.
console.log('Loading app from service worker.');
loadMainDartJs();
}
});

// If service worker doesn't succeed in a reasonable amount of time,
// fallback to plaint <script> tag.
setTimeout(() => {
if (!scriptLoaded) {
console.warn(
'Failed to load app from service worker. Falling back to plain <script> tag.',
);
loadMainDartJs();
}
}, 4000);
});
} else {
// Service workers not supported. Just drop the <script> tag.
loadMainDartJs();
}
{{flutter_bootstrap_js}}
</script>
<!--<script src="packages/flutter_osm_web/src/asset/map_init.js"></script>-->
</body>
</html>
12 changes: 12 additions & 0 deletions example/web/manifest.json
Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,18 @@
"src": "icons/Icon-512.png",
"sizes": "512x512",
"type": "image/png"
},
{
"src": "icons/Icon-maskable-192.png",
"sizes": "192x192",
"type": "image/png",
"purpose": "maskable"
},
{
"src": "icons/Icon-maskable-512.png",
"sizes": "512x512",
"type": "image/png",
"purpose": "maskable"
}
]
}

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