offline-caching | 易学教程

Chrome reporting html5 cache manifest mime type incorrectly

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I'm trying to set up a cache manifest for a site and am having little luck. A demo page is here: http://www.matthewlehner.ca The HTML I'm using has this structure: <!DOCTYPE html> <html manifest="manifest.appcache"> </html> .htaccess in the root folder has the following entry: AddType text/cache-manifest appcache AddType text/cache-manifest .appcache Response from `curl -I http://www.matthewlehner.ca/manifest.appcache ' HTTP/1.1 200 OK Date: Sun, 11 Sep 2011 00:04:30 GMT Server: Apache Last-Modified: Sat, 10 Sep 2011 07:53:30 GMT ETag: "18a84003-32-4ac9196f95280" Accept-Ranges: bytes Content

How does facebook or instagram app retain images or data after entering the app with no internet connection?

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In Facebook app, for example, I login with my internet connection. Then I close the app, turn off the internet and close all my system tabs. Then even though my internet connection is off, I see the images and data that had been previously loaded still retained. How does Facebook app do that? What should I do if wanted to implement such a feature in my Android app? i use 'Picasso' Library for caching, loading... images from internet : http://square.github.io/picasso/ Automatic memory and disk caching Picasso.with(context) .load(url) .resize(50, 50) .centerCrop() .into(imageView) for data, you

How to cache/download google map v2 tile programmatically?

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How to cache/download google map v2 tile programmatically?, is it possible? Bcos according to this prntscr.com/3cyiqf its not possible but as I have seen this link TileProvider using local tiles I thought that if Android provides TileProvider class to load/use tile from the asset than it should be something available for caching/downloading a tile programmatically/run time My Actual requirement is : If user is connected with internet at that time he can able to download/cache a tile of specific area or he can download/cache, visible map in the phone screen only and whenever he goes offline at

An unknown error occurred when fetching the script (Service Worker)

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When going offline, I get the following error by my service worker: (unknown) #3016 An unknown error occurred when fetching the script my service worker looks like this: var version = 'v1' this.addEventListener('install', function(event){ event.waitUntil( caches.open(version).then(cache => { return cache.addAll([ 'https://fonts.googleapis.com/icon?family=Material+Icons', 'https://fonts.googleapis.com/css?family=Open+Sans:400,600,300', './index.html' ]) }) ) }) this.addEventListener('fetch', function(event) { event.respondWith( caches.match(event.request).then(function(resp) { // if it's not in

Android Offline and online Apps using cache & Phonegap

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my experience with cache in Android using Phonegap . 1. I want to create one app which should work online as well as offline. 2. If internet connectivity is there it should use otherwise use the history. Now it working with the online ..but i need to work my app in off line too. for the checking network connection : function onDeviceReady() { navigator.network.isReachable("phonegap.com", reachableCallback, {}); navigator.notification.alert("Server Is Ready"); } // Check network status // function reachableCallback(reachability) { // There is no consistency on the format of reachability var

How to implement offline capable Single Page Application with Breeze.js and HTML5 local storage

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I have working Single Page Application using Breeze.js for Data Access. It uses the Breeze.js to execute queries against the local cache and the data is requested only once at start up. Only the data updates are posted back on the server afterwards. I am looking for a solution to make the application connection aware. If the mobile device does not have internet connection the changes will be saved locally with Breeze.js and HTML5 local storage. When the mobile device is back online the changes will be synched to the remote data storage. Any guidelines how to implement that requirement? Thanks

AVAssetDownloadDelegate methods for HLS caching not getting called

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I have followed the tutorial given here for HLS caching, but the control never reaches to any of the delegates ( of AVAssetDownloadDelegate ). Am I missing anything? Here is code I wrote - (void)setupAssetDownloader { NSURL *assetURL = [NSURL URLWithString:@"STREAMING_HOST/video/hls/3729170.m3u8"]; AVURLAsset *hlsAsset = [AVURLAsset assetWithURL:assetURL]; urlSessionConfiguration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:@"assetDowloadConfigIdentifier"]; avAssetDownloadSession = [AVAssetDownloadURLSession sessionWithConfiguration:urlSessionConfiguration

Angular 4 documentation offline computer [closed]

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I would like to find a local/offline version of the Angular 4 documentation ( https://angular.io/docs ), that I could use in an offline environement (no internet access at all, zeal and its alternatives) could not be used unfortunatly. After many hours of searches it seems that nobody could find a simple solution for this task, only for the angularJS 1.0 version.. I have also tried cloning the angular documentation project without success on running it locally without internet available. Go to DevDocs.io this website first Then go to Preference from Menu Check item that you want to get in list

Got this error with retrofit2 & OkHttp3. Unable to resolve host “<host-name>”: No address associated with hostname

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I am using the retrofit 2 and OkHttp3 to request data from server. I just added a offline cache code but It's not working as expected. I got the error "Unable to resolve host "<>": No address associated with hostname." This occurs when It's try to get the retrieve data from the cache(when no internet connection). A code snippet is below. public static Interceptor provideCacheInterceptor() { return new Interceptor() { @Override public Response intercept(Chain chain) throws IOException { Response response = chain.proceed(chain.request()); // re-write response header to force use of cache

Cache asset via freshness in Angular 6 Service Worker

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I'm trying to integrate the Angular Service Worker into a existing project. If I understood it correctly there are two cases how data gets cached in Angular SW. It is possible to prefetch or lazyupdate the asset data and to cache specific API calls and other XHR requests. What I'm trying to achieve is to load an specific asset first via network, if the request runs into a timeout or is not accessible it will be served via the cache. Just like the freshness strategy when caching API calls. But it seems that there's no possible way to configure such a freshness loading mechanism for a JS file

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