androidjqueryiosjquery-mobileiscrollview

fixed header scrolls/drags in jquery mobile

I am working on mobile web app using jquery mobile and phonegap. I developed a hello world app. It has header, footer and contents area. Header and footer are fixed using data-position="fixed" attribute. But the problem with header and footer is, when I scroll down and when the contents a finished and there is not need to scroll anymore then its header drags down(for flexibility or indication and there are not more contents). As in other ios apps, this feature exists but in those apps the header and footer does not drags up and down the contents area only drags. Please see the picture what I mean

enter image description here

As in above picture the header is dragged towards bottom side which I do not want. I want only the content area to have this feature. How can I make it this way so that contents area drags only when there are no more contents available to see?

Any help css, jquery or jquery mobile trick?

Update

HTML code here

<div data-role="page">

        <div data-role="header" id="header" data-position="fixed">
            <h1>Page Title</h1>
        </div><!-- /header -->

        <div data-role="content" id="contents">
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
        </div><!-- /content -->

        <div data-role="footer" data-position="fixed">
            <h4>Page Footer</h4>
        </div><!-- /footer -->
    </div><!-- /page -->
Solution

  • Unfortunately your example is not going to work because iOS will not allow you that.

    Solution 1 - iOS and Android

    Thankfully there's a 3rd party jQuery Mobile plugin that will help you with this problem and it works like a charm. This is an iOS and Android solution.

    What you need is a iScrollView plugin made on a basis of iScroll plugin.

    I can't make you a jsFiddle example because it don't work with iScrollView, at least I can't make it work so here an example that you can just copy into new HTML file and try it on your iOS.

    First here's a working online example I made: http://www.fajrunt.org/

    HTML : 

    <!DOCTYPE html>
<html lang="en">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no"/>
    <meta name="apple-mobile-web-app-capable" content="yes">
    <meta name="apple-mobile-web-app-status-bar-style" content="black">
    <title>Demo</title>

    <link rel="stylesheet" href="http://www.fajrunt.org/css/jquery.mobile-1.3.1.min.css" />
    <link rel="stylesheet" href="http://www.fajrunt.org/css/jquery.mobile.iscrollview.css" />
    <link rel="stylesheet" href="http://www.fajrunt.org/css/jquery.mobile.iscrollview-pull.css" />   

    <script src="http://www.fajrunt.org/js/jquery-1.9.1.min.js"></script>
    <script src="http://www.fajrunt.org/js/jquery.mobile-1.3.1.js"></script>    
    <script src="http://www.fajrunt.org/js/iscroll.js"></script>
    <script src="http://www.fajrunt.org/js/jquery.mobile.iscrollview.js"></script> 
</head>

<body>
    <div data-role="page" class="index-page">

    <div data-role="header" data-position="fixed" data-tap-toggle="false" data-transition="none" data-id="header">
        <h1>INDEX PAGE</h1>
    </div>

    <div data-role="content" class="example-wrapper" data-iscroll>
        <p>some content that will be scrolled</p>
        <p>Some more content that will be scrolled</p>
        <ul data-role="listview">
        <li>Item 1</li>
        <li>Item 2</li>
        </ul>
        <p>Even more content. It will scroll whatever is in the data-iscroll div.</p>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>
        <h1>Hello Cirrus.</h1>         
    </div>

    <div data-role="footer" data-position="fixed" data-tap-toggle="false" data-transition="none" data-id="footer">
        <h1>My Footer</h1>
    </div>

    </div>
</body>
</html>

    As you can see this example works like magic. One more thing, if you didn't know that iScrollview can also fix another problem. Lets say you have scrolled to the bottom of your page and there's a button to the another page. When you click it usually page will jump to the top and only then page will transition to an another page. This is not an error, this is just how viewpoint works. But tnx to iScrollView you page will just transition from that point and when you get back your page will still be at the same position.

    One last thing if you are an iOS developer, iScrollView doesn't have anything to do with UIScrollView.

    Solution 2 - iOS only

    There's a pure css fix for your problem but it will only work on iOS that is way I am showing it as a second solution.

    Again this is not my solution and official page can be found here: http://outof.me/native-scrolling-in-jquery-mobilephonegap-applications/

    With some page changes you can initiate iOS page scrolling with jQuery Mobile.

    HTML :

    <!DOCTYPE html>
<html>
<head>
    <title>Scrollable Content Demo</title>
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <!-- jQuery Mobile styles -->
    <link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />

    <!-- Fix for scrolling on iOS prior to iOS 6 -->
    <style type="text/css">
        body {
            margin: 0;
        }

        div#container {
            position: absolute;
            width: 100%;
            top: 0;
            bottom: 0;
        }

        div[data-role="header"] {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
        }

        div[data-role="content"] {
            position: absolute;
            top: 41px;
            bottom: 0;
            left: 0;
            right: 0;
        }

        .scrollable {
            overflow-y: scroll;
            -webkit-overflow-scrolling: touch;
        }

            /* iOS specific fix, don't use it on Android devices */
        .scrollable > * {
            -webkit-transform: translateZ(0px);
        }
    </style>

    <script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
    <script type="text/javascript">
        $(document).one('mobileinit', function () {

            // Setting #container div as a jqm pageContainer
            $.mobile.pageContainer = $('#container');

            // Setting default page transition to slide
            $.mobile.defaultPageTransition = 'slide';

        });
    </script>
    <script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>

</head>
<body>
<div id="container">

    <div data-role="page">
        <div data-role="header" data-position="fixed">
            <h1>Scrollable Content</h1>
        </div>

        <div data-role="content" class="scrollable">
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>
            <h1>Hello Cirrus.</h1>   
        </div>
        <div data-role="footer" data-position="fixed">
            <h1>Footer</h1>
        </div>      
    </div>

</div>
</body>
</html>

    Last question

    Regarding your second question. When you finally reach bottom or if you are on a top of a page you will not be able to prevent bouncing. Only way you can prevent bouncing is if you prevent scrolling. And this is not on option in your case, you need scrolling to access bottom of the page.

    Final notes

    If you want to find out more about iScroll + iScrollView, how they work with working examples then take a look at this article.