Very nice. I do have a question that you or someone else here may be able to answer. When using a cache manifest and the user visits the site while they are online does the browser use the cached files or does it ignore manifested files and download based on src. What I am thinking is this could be used to give better web app performance over cell networks. If the browser uses cached files even when on line then you could manifest things like the iui frame work, all css, js, and images along with the initial index page. Then let Ajax load the rest as needed. The only data that would need to be transferred would be HTML fragments and you have greatly reduced load times for the user. Any thoughts or comments.
Vic Hudson Phone: (859) 806-1773 Personal: [email protected] School: [email protected] Work: [email protected] On Feb 28, 2010, at 19:53, Alex Zylka <[email protected]> wrote: > Ok, so I said that I would create some sort of offline webapp tutorial > thing. So here goes: > > There is one important thing that you need for this simple, easy to > use solution. It's PHP. If you don't have it, you'll have to list all > of the files you want to cache manually. > > Step 1. Create a PHP file called manifest.php > Step 2. Put the following into it: > > <?php > header('Content-Type: text/cache-manifest'); > echo "CACHE MANIFEST\n"; > > $hashes = ""; > > $dir = new RecursiveDirectoryIterator("."); > foreach(new RecursiveIteratorIterator($dir) as $file) { > if ($file->IsFile() && > $file != "./manifest.php" && > substr($file->getFilename(), 0, 1) != ".") > { > echo $file . "\n"; > $hashes .= md5_file($file); > } > } > echo "# Hash: " . md5($hashes) . "\n"; > ?> > > Step 3. Put manifest.php in the directory of the webapp that you want > to use offline > Step 4. Replace your <html> tag with <html manifest="manifest.php"> in > the index.html, index.php, etc. file > > Note: That md5 hash is necessary so that every time you add a new > file, or edit one, the hash changes, forcing the device that is using > the webapp offline to re-cache, and update its offline files. > > Alex > > P.S. A more in-depth tutorial, that manually list files, with an > example can be found here: > http://www.thecssninja.com/javascript/how-to-create-offline-webapps-on-the-iphone > > -- > You received this message because you are subscribed to the Google > Groups "iPhoneWebDev" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected] > . > For more options, visit this group at > http://groups.google.com/group/iphonewebdev?hl=en > . > -- You received this message because you are subscribed to the Google Groups "iPhoneWebDev" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/iphonewebdev?hl=en.
