For some strange reason, when I load my web app on chrome, jquery mobile is flawless but when I try it on my iphone, it never renders properly. The page just crashes and looks awfully bad. I decided to use the cdn because I was told it was faster.
<!-- the three things that jQuery Mobile needs to work -->
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
I copied the above snippet directly from the jquery site. Any suggestions as to why am getting different behaviors?
Related
I've had a look at other solutions proposed to other similar questions on StackOverflow and I can't seem to get my favicon to display for my Rails page in Chrome (at least on the desktop, it works for Chrome on my iPad weirdly).
I've tried having it as an .ico, as a .png, and currently have it as a Base64 string as proposed in response to a similar question. All of these work in Firefox, but will not work in Chrome.
The page is deployed using Heroku, and the link href tag is in the head tag.
The page is at https://www.resnate.com.
EDIT: Code:
<head>
<meta property="og:title" content="Resnate: The Music Social Network." />
<meta property="og:description" content="Music, Gigs and Merch." />
<meta property="og:image" content="/assets/previewimg2-c6c3bbb488ce1d2360bb605f93adc8421afe44813c1de1e324aa008858dbba18.png" />
<title>Resnate: Music, Gigs, Merch.</title>
<link rel="stylesheet" media="screen" href="/assets/application.self-a2388fc8a11c59fee992af9cba7099a53de4bd515465610aa19c43a3b90054f6.css?body=1" data-turbolinks-track="true" />
<link href='//fonts.googleapis.com/css?family=Lato:400,900' rel='stylesheet' type='text/css'>
<script src="/assets/jquery.self-c64a74367bda6ef8b860f19e74df08927ca99d2be2ac934e9e92d5fd361e0da4.js?body=1" data-turbolinks-track="true"></script>
<script src="/assets/jquery_ujs.self-d602bdfe68ffc63b9f9cc512872aa3cfff046228a0a36e90dd476e8ef54c1b09.js?body=1" data-turbolinks-track="true"></script>
<script src="https://js.pusher.com/2.2/pusher.min.js"></script>
<link href="data:image/x-icon;base64,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" rel="icon" type="image/x-icon" />
<meta name="csrf-param" content="authenticity_token" />
<meta name="csrf-token" content="nM46FYSVzSqJFGHsAMGU/IrPXSNExiq25L5Q7vJp2ZP+f3uj1u9isqrpgNna/mAl1X0eABdwsP6YYt8qzgDHTA==" />
<!--[if lt IE 9]>
<script src="https://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
</head>
I know this question is two years old now, but as I have been struggling with this exact problem for 3+ hours surfing the net without finding a solution to my case (I was doing everything people suggested in all its flavors) and I have just suddenly make it work, I think I'm going to post my experience just in case I can save the pain to the next victim.
My setup was exactly the same as OP's: Rails app with a favicon displaying in every single browser but Chrome. I tried to follow #toddmetheny answer without success.
It turns out that as this app I'm working in loads a whole lot of scripts inside <head>, where you place the favicon <link> tags becomes important. I don't really know why this happens (would be much appreciated if someone could either confirm or destroy my theory), but I guess that while Chrome is loading those scripts, as it has not yet found any <link> tag referencing a favicon, it requests the default /favicon.ico. I noticed this while looking at the Network tab: Chrome always requested /favicon.ico while the other browsers requested the one referenced in the <link> tag as expected.
I don't know if this might have been the cause to OP's problem (as I see he loads some scripts too), but the solution was as simple as moving the favicon_link_tag block to the top of <head>, just after <meta> tags.
Hope this helps some desperate folks out there!
Try using the rails helper favicon_link_tag.
Make sure your icon is saved in app/assets/images. Clear your browser cache to ensure you're using the latest.
I have just started using jQuery Mobile for an ASP.NET site which will have certain pages designed expressly for touch/tablet access. JQM certainly seems the way to go, but for some reason I am unable to get icons to show, even when I keep it very simple and only use CDN hosted JS and CSS, as follows:
<head runat="server">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.4.4/jquery.mobile-1.4.4.min.css" />
<script src="http://code.jquery.com/jquery-1.11.1.min.js"></script>
<script src="http://code.jquery.com/jquery.mobile-1.4.4.min.js" ></script>
</head>
and then in the body:
<div data-role="main" class="ui-content">
Options
This all seems standard. The only possible thing I can think of is that I am testing using a Microsoft Surface 2 running Windows 8.1 RT and IE11 - but surely this can't be the problem? Can anyone confirm that this should work?
Jon
mmh.. this should work but also, you should avoid data-rel="dialog" (deprecated) but instead data-rel="popup" and set data-dialog="true" in the dialog page.
I have a very simple HTML5 iPhone web application that works almost perfectly; there is only one issue: between the launch image and the app homescreen, a completely white screen appears (i.e. flickers) for about one second.
I'm downloading the app to my phone from the web by using the "Add to Home Screen" button. The javascript file (functions.js) and stylesheet are both very small files.
Has anyone had this problem? Are there any ways to work around/fix it?
index.html
<!doctype html>
<html manifest="demo.manifest">
<head>
<meta charset="UTF-8">
<title>HTML5 Application</title>
<link rel="stylesheet" type="text/css" href="style.css" />
<link rel="apple-touch-icon-precomposed" href="Icon#2x.png" />
<link rel="apple-touch-startup-image" href="Default#2x.png" />
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="viewport" content="user-scalable=no, width=device-width" />
</head>
<body>
<div id="wrapper">...</div>
</body>
<script type="text/javascript" src="function.js"></script>
</html>
demo.manifest
CACHE MANIFEST
index.html
Default#2x.png
functions.js
style.css
.htaccess
AddType text/cache-manifest .manifest
EDIT #1: I have done some more research and came upon this answer:
Clearing the screen and other artifacts while rendering is a common issue of HTML rendering due to the progressive nature of HTML. The concept is that the browser should draw as early and often as possible and render styles/scripts/content as they become available. It's possible the markup has an issue where all rendering is delayed until some content or a script is available.This could happen if:
You have dynamic heights based on image dimensions but you haven't
set the image dimensions in the markup or CSS.
Your layout is based on tables and you aren't using 'table-layout:fixed` in CSS.
Your HTML uses inline scripts with document.write().
You have some kind of onLoad() function that reveals/modifies content.
You link to an external stylesheet.
You're using uncacheable external content or you've disabled caching.
You're using external content that's returning 404 or isn't available offline.
I have followed all the suggestions in this answer, but it does not rid my web app of the white flicker. Are there any hacks to get around this issue?
EDIT #2: I have tried using no Javascript and a stylesheet with only:
body { background-color: black }
But there is still a white flicker. Since this appears to be an issue with all web applications like this, my question is: Are there any hacks to work around this issue?
CSS selectors are pretty slow on iOS (greedy CSS reset scripts have terrible performance too).
Head initiated javascript self loading DOM-ready scripts and CSS selectors running together compound the issue further. As you have both CSS and javascript requests in the head, there is a small but appreciable delay processing the body, especially the body's background colour.
Most HTML5 frameworks are moving to deferred script loading. As a minmum you want to get the stylesheet loaded first and worry about javascript second. Try putting the css at the top and scripts at the bottom, then inlining a default background colour (not image - there's an appreciable delay on iOS 5 rendering scaled background images and CSS gradients).
You can also try the async attribute on iOS5+, but I haven't tried it myself.
Hope this helps :)
Alright, seems like a basic and annoying problem. I think the best way to tackle this would be via AJAX (Asynchronous JavaScript and XML). I'm sure you probably already know what this is, but it's just a way to basically send a request from JavaScript for a file elsewhere and then load it into the page or parse it however you wish.
A little more advanced approach
For your example, I recommend you comment out the line of CSS that has the background-image like this:
.bg-container {
/* background-image: url(img/bg.png); /* commented out */
}
Note that the second comment just makes it easier to comment and uncomment the one line while debugging your code.
Now just add a simple img tag to your body, and make the src of it an ajax loader (you can find the spinning wheel generators anywhere). From here you can write some JavaScript to load the image, get rid of the spinner, and replace it.
Two simpler approaches
This solution doesn't appeal to me, I don't think most people would like it anyways. That's why I use 'Bootloader.js' which is a little AJAX loading tool I wrote a couple of months ago to help people with these sort of problems.
It's easy to use, aside from the script include, just add this meta tag:
<meta name="bootloader" content="enabled,forms('selectorOfForms'),a('selectorOfAnchors')">
The forms and anchors is optional, if you use it, it will make all your forms and links asynchronous (not for cross-domain use yet). The forms are not easy to setup, you can read the documentation on that if you would like.
Finally, set up your body like this:
<body>
<div id="body">
<!-- All the content should go here -->
</div>
<!-- This will disappear on first ajax load -->
</body>
And there you have it, this will handle everything for you.
Final suggestion
If you don't like any of these options, or want a limited yet customizable option, I recommend you use Image LazyLoader by Mika Tuupola (included with Bootloader.js) and also available at: http://www.appelsiini.net/projects/lazyload
Tell me how it goes, and what you use! XD
This problem occurs with even simple sites.
Take this for example: it shows a website with a background of #ccc with a splashscreen of #ccc for the iphone 7.
<!doctype html>
<html style="background-color: #ccc;">
<head>
<title>iOS web app</title>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-title" content="iOS web app">
<meta name="viewport" content="initial-scale=1">
<link href="https://placehold.it/750x1294" media="(device-width: 375px) and (device-height: 667px)
and (-webkit-device-pixel-ratio: 2)" rel="apple-touch-startup-image">
</head>
<body style="background-color: #ccc;">
<h1>iOS web app</h1>
</body>
</html>
https://imgur.com/a/tGiREVM
You can see a white flicker while the app loads.
Faster loading apps feel worse, slightly epileptic, with the white flash. And if the splash screen is dark, it looks worse again.
I have a simple app developed with jQuery Mobile and implemented in PhoneGap. It works fine in the iPad 4.3 simulator, but not on iPad 5.0 simulator and an actual iPad running iOS 5...
This is the head section of the html file:
<head>
<meta charset="utf-8"/>
<meta name="apple-mobile-web-app-capable" content="yes"/>
<meta name="apple-mobile-web-app-status-bar-style" content="black"/>
<meta content="width=device-width,minimum-scale=1,maximum-scale=1" name="viewport"/>
<link rel="apple-touch-icon" href="icon.png"/>
<link rel="apple-touch-icon" sizes="72x72" href="icon.png"/>
<link rel="apple-touch-icon" sizes="114x114" href="icon.png"/>
<title>App demo</title>
<link rel="stylesheet" href="scripts/jquery.mobile-1.0rc2.min.css"/>
<link href="css/style.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="scripts/jquery-1.6.4.min.js"/>
<script type="text/javascript" src="scripts/jquery.mobile-1.0rc2.min.js"/>
<script type="text/javascript" src="scripts/general.js"></script>
<script type="text/javascript" src="scripts/app.js"/>
</head>
When I run it on iPad simulator 4.3 everything works great. But on 5.0 it just shows a blank screen. Same with the actual iPad with iOS 5. If however I remove the script references it sort of "works" in that it shows the content of the HTML page, but of course without the styling and functionality of jQuery Mobile... Including any jQuery at all seems to break it, e.g. if i leave in only the reference to jquery-1.6.4.min.js it won't work either. Or one of my custom js files for that matter.
Does anyone know what's going on here? Does it have something to do with placement of the file references? I think I have placed them in the correct order (jQuery first, then jQuery mobile and then my custom js)... It doesn't seem like it never works, I tried this app http://coenraets.org/blog/2011/10/sample-application-with-jquery-mobile-and-phonegap/ and that works fine. It has the script references rather strangely placed at the bottom of the file, just before the closing body tag. But I tried doing that too, and then the jQuery Mobile stuff didn't kick in at all (although I could see the content).
And still, since it works in the 4.3 simulator I don't think there is something really wrong with my code, but then why doesn't it work in 5.0?
This question here on stack overflow seems to suggest that the UIWebView in iOS5 requires external script links to have an actual closing tag rather than simply ending with '/>'.
Try to change the links to:
<script type="text/javascript" src="scripts/jquery-1.6.4.min.js"></script>
Does that change anything?
I'm trying to migrate a Phonegap app wich uses jQuery Mobile to Blackberry. When I start the app, which runs fine on Android and iOS. I see no styles, javascript whatsoever.
I figured, that Blackberry webworks apps use different file paths than iOs and Android. I find this file path thing a bit odd in general.
Like when you use a file path in an HTML file like for <img src="res/img/..."> the normal relative path is fine for Android and iOS. BUT if you specify a file path in JS you need "file:///android_asset/www/res/img" for Android while "res/img/" is fine for iOS. But anyways... what's the case with Blackberry here?
Do external JavaScript and CSS files require something like the following?
<link rel="stylesheet" href="local:///lib/jquerymobile/jquery.mobile.min.css" />
or should it work the normal way by just specifinging the relative path?
Besides that, are there other pitfalls? Like I heard about file naming issues when using "dashes", "underscores", whatsoever.
Would be great if someone with exerience with Phonegap apps for BB could share their experiences.
This is what i have:
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="viewport" content="width=device-width, height=device-height,
initial-scale=1.0, 'maximum-scale=1.0, 'minimum-scale=1.0, user-scalable=no" />
<!-- PhoneGAP -->
<script src="json2.js" type="text/javascript"></script>
<script src="phonegap-1.0.0.js" type="text/javascript"></script>
<!-- JQuery Mobile -->
<link rel="stylesheet" href="resources/jquery.mobile-1.0rc1/jquery.mobile-1.0rc1.min.css" />
<script src="resources/jquery-1.6.4.min.js"></script>
<script src="resources/jquery.cookie.js"></script>
<script src="resources/jquery.mobile-1.0rc1/jquery.mobile-1.0rc1.min.js"></script>
That´s the order that works, check the src attribs to know where you must copy the jqm library.
Good luck!