This question requires some explaining, so please bear with me.
Contrary to popular belief, inertia scrolling (the very smooth 60fps scrolling) is not enabled on web pages in Mobile Safari by default. As it makes a world of difference in user experience, I have enabled it by dynamically applying this CSS to the HTML and BODY element of the page, after a Modernizr test for iOS specifically:
<style>
.touchscroll {
overflow: auto;
-webkit-overflow-scrolling: touch;
position:relative;
height:100%;
}
.touchscroll body {
height:100%;
overflow: auto;
-webkit-overflow-scrolling: touch;
position:relative;
}
</style>
The above basically makes the body element a scrollable element and by means of -webkit-overflow-scrolling: touch, one gets the smooth intertia scrolling effect on the entire page. Some more background on this solution can be found here (disclaimer: article by myself).
It works, so far, so good. The problem is that this solution effectively disables another highly desired behavior of Mobile Safari: normally, when scrolling down, it will make the address bar smaller, and hide the bottom bar of the browser entirely. They re-appear when scrolling back up.
Unfortunately, the above technique disables this for some reason. Yes, we've got super smooth scrolling, yet the browser bar is always large and the bottom bar permanently stays visible, both taking up valuable space.
My question therefore is, can I have both? I want the super smooth scrolling on the entire page, yet I also want the default hiding behavior of browser elements when scrolling.
An example of a site where I am using this is here:
http://www.jungledragon.com/
If you open that in Mobile Safari, you will see the smooth scrolling, yet not the hiding of browser elements when scrolling down.
I think you're setting both the <html> and the <body> element to scroll. You should apply these CSS rules to 1 element you want to be able to scroll.
So either the html or body, not both.
TLDR;
Everything works fine unless I try to scroll down the page with my touch start inside of a horizontally scrolling div, because page has the elastic scrolling effect while not at bottom or top. Removing jQuery Mobile fixes this problem. This is only happening in IOS, Android is fine. TLDR;
I'm having an issue with jQuery Mobile and scrolling.
I have a page that is greater than my screen (on iPhone 5s). This page has 2 horizontally scrolling divs on it with images.
The scrolling divs are as follows
HTML:
<div class="list">
<input type="radio" name="cover" value="26" id="Cover26" data-role="none" class="offScreen">
<label for="Cover26">
<span class="check"></span>
<img src="http://placehold.it/110x170" class="background">
</label>
</div>
CSS:
.list{width:auto;height:190px;overflow:hidden;overflow-x:auto;overflow-y:visible;white-space:nowrap;-webkit-overflow-scrolling:touch;}
.list label{width:110px;height:170px;margin:0 8px 5px;padding:0;position:relative;overflow:hidden;vertical-align:top;display:inline-block;}
.list input{position:absolute;top:-999px;left:-999px;}
This scrolling works fine horizontally, but when I touch inside one of these divs and pull up on the screen to scroll down the page, the page has the elastic scrolling effect(see images). Scrolling down the page works find if my touch starts outside the horizontal div.
First view of page
Elastic scrolling happening when page isn't at bottom
At actual bottom of page
Elastic scrolling happening when page isn't at the top
Scrolling up and down the page is only possible when the touch starts outside of the horizontally scrolling div. If I remove jQuery Mobile this issue no longer happens. I believe it has something to do with jQuery Mobile's vmouse events. But I haven't been able to tell for certain and I'm not sure if I can remove those event handlers and have the page still work with jQuery Mobile.
Form as far as I can tell this is only happening on IOS. I've tried and android phone and everything works as expected.
I've been stuck on this for a while and can't figure out what else I can do to fix it. Any ideas are helpful. Thanks for looking!
For anyone that would like a demo here are some I'm hosting. I would have put them on jsfiddle but jsfiddle doesn't support setting viewport for the mobile page to render properly.
Page with jQuery Mobile which doesn't work
Same page without jQuery Mobile which does work
The problem appears to be caused by the below CSS styles.
#cover-builder-page, #page-builder-page {
width:100%;
height:100%;
}
When you set page's height to 100%, it sets height according to available space in viewport. If you set min-height to 100% it will work, or just remove it all together.
Demo (1)
(1) Tested on iPhone 5 - Safari
I have a mobile application running Backbone.js and jQuery mobile. Because I have Backbone.js and for performance reasons I have disabled all the JQM routing and transitions. I understand that storing scroll location is a feature available in JQM, but I am unable to utilize that (as far as I know).
I have a list view with a potentially long list of items. When the user taps one on the mobile device, it stores the current scroll position and renders a new view. When the user taps the "back" button, it goes back one in the history.
clickLink: ->
window.lastScroll = $(window).scrollTop()
render: ->
...
if window.lastScroll
$.mobile.silentScroll window.lastScroll
window.lastScroll = undefined
This works as desired on desktop Safari, but when I try it using it on iOS Safari (both simulator and the real thing), there is an issue with the fixed footer navbar.
If the user taps back, the listview is scrolled down as intended, but then if they tap the footer navbar, it is as if they tapped under it, whatever list item is under it will be activated instead. If the user scrolls a little bit before tapping the navbar, everything works fine.
Does anyone have any ideas? Perhaps there is a better approach that would avoid this issue all together.
Thanks in advance for the help.
Could it be related to this bug?
Form elements can lose click hit area in position: fixed containers
(linked from here JQuery Mobile 1.1.0 docs )
I see there is a workaround in the first link - worth a try?
Chad Smith Answered this Mobile Safari bug on fixed positioned button after scrollTop programmatically changed...?
His method worked best for me. Here is his response:
I got around it by adding a 101% high div then (almost) immediately removing it.
Try:
<style>
.iosfix {
height: 101%;
overflow: hidden;
}
</style>
and when you scroll:
window.scrollTo(0, _NEW_SCROLLTOP_);
$('body').append($('<div></div>').addClass('iosfix'));
setTimeout(function() {
$('.iosfix').remove();
}, 500);
It also works with jQuery.scrollTo.
See an example here.
I have a one page scrolling site width smooth scrolling links. Fixed position nav with links to anchors. Pretty straight forward.
Everything works fine on desktop browsers, but on the iPad (iOS 5 Mobile Safari) links work fine initially, but efter the page gets scrolled (by top nav links), all links including top nav links "get blocked" and can't be clicked. I have to adjust the viewport vertical scroll, then the links works again.
Thankful for any help!
Using this scrolling function:
$('nav ul a').bind('click',function(event){
var $anchor = $(this);
$('html, body').stop().animate({
scrollTop: $( $anchor.attr('href')).offset().top - 60
}, 1200,'easeInOutExpo');
event.preventDefault();
});
The same Problem is described here: anchor links not working properly on ipad
Found the solution here: https://stackoverflow.com/a/9198836/1145706
I've solved this with a trick. I've created invisible divs over the menu items that changes it's position when page scrolls (simulating afixed element over the real position: fixed menu items). When user clicks or hover over those invisble divs the real ones are called
when using [-webkit-overflow-scrolling: touch;], the scrolling area does work well,
but it causes touch events stopping work out of the scrolling area.
Is there anyone had the same problem? Who can give me some official links about this new scrolling feature?
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>ios5 scroll</title>
<style type="text/css">
header {
background: red;
width: 300px;
height:44px;
}
.scroll {
width: 300px;
height:300px;
background: yellow;
overflow: scroll;
-webkit-overflow-scrolling: touch;
}
</style>
</head>
<body>
<div id="container">
<header>
<button onclick="alert('header');">won't work?</button>
</header>
<div class="scroll">
<button onclick="alert('scroll');">It works</button>
<div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div>
<div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div>
<div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div><div>text</div>
</div>
</div>
</body>
</html>
2011-12-27: I have fixed this problem but I still no wonder the real reason.
In my case, I have several sections in one web page, each section has a scroll area and a header, each time only one section is showed and use css3 animation combined with transform to switch sections. when add [-webkit-overflow-scrolling] in the scroll area of all sections, touch events stop working randomly, so I just add [-webkit-overflow-scrolling] in the section which is showed currently and remove it when the section is hidden. That works well but I still don't know what causes this problem.
I have the same issue, and I can also replicate it every time. I have a page that resizes elements to fit the screen when the orientation of the iPad changes. If at any point the element no longer needs to scroll, it will stop doing so thereafter even if the element is resized back to where it needs to scroll (e.g. flipping back to landscape for me). So it's definitely a bug, but I do have a workaround:
When resizing the element, I'm resetting the -webkit-overflow-scrolling to auto, then setting it back to touch. However, you have to introduce a delay between the two (50ms is working fine, didn't try any lower). So what I did was added an attribute of "scrollable" to the elements, and used the code below (using jQuery):
$("[scrollable]").css("-webkit-overflow-scrolling", "auto");
window.setTimeout(function () { $("[scrollable]").css("-webkit-overflow-scrolling", "touch") }, 100);
Hope this helps!
This is caused by having an <iframe> on the page. Many scripts create <iframes> to do their work including social tracking buttons (Facebook, Twitter, G+), analytics tracking (Google, etc.), and libraries like PhoneGap.
It doesn't matter how the <iframe> is displayed. display: none; visibility: hidden; width: 0; height: 0 does not fix it. If an <iframe> is on the page it will happen, sometimes intermittently and sometimes always.
The only solution I've found so far (which is turning out to not be very workable in a production app) is to delete all <iframes> on the page, create them only when needed (for example, when I need to call a PhoneGap API), and then delete them when finished.
I confirm I saw the same issue on a web app using extensively touch events and list scrolls.
Before iOS5 I was using iScroll, and everything was working fine;
With iOS5, I used -webkit-overflow-scrolling:touch to scroll lists to get faster scrolls.
The consequence is I met random occurrences of touch events no more working on various parts of the app. The issues generally occur after I scrolled a list. it affects randomly elements outside the scrolled area, typically a footer menu.
Reloading the app when in 'frozen touch' state doesn't unfreezes it : to unfreeze it, I had to close the safari tab, open a new one and reload, until I met again the issue while using the app.
The issue is seen on iPad2, iPhone 4, iPhone 3GS, all on iOS 5.0
Eventually, I deactivated the overflow touch scroll and came back to iScroll, and things work well as in iOS4 .
-webkit-overflow-scrolling + CSS3 Animations + Phonegap API calls = touch stops responding.
My phonegap app will work fine until I make a call to a Phonegap API, at which point the touch will stop responding on mainly the first element that has a event attached to it in the current view. A view for my app is body > div.current with the rest of the divs display none.
I can replicate this every time.
It is clearly a bug in iOS5.
Here's a variation on a few of the answers already listed.
My specific issue was that reorientation caused scrolling to stop working completely when -webkit-overflow-scrolling: touch was applied to an element.
Example: Landscape orientation is shorter and needs a scrollbar. Portrait is tall enough that no scrollbar is needed. Reorient to landscape; scrollbar is present but non-functional.
listen for the orientationchange event
do something which triggers a layout change on the scrolling element
ensure that the change is significant enough that the rendering engine doesn't optimize it away. For example, hiding then immediately showing does not seem to do anything. Anything that uses setTimeout() seems to work (perhaps it is the different execution context, I don't know).
Fading in and out works, or hiding and then showing with a short delay works (though it flashes). #Sari's solution for changing the scroll properties works and does not cause any visible redraw.
$(window).on("orientationchange", function () {
// use any valid jQuery selector
var elements = $("[data-touchfix=true]");
elements.css("-webkit-overflow-scrolling", "auto");
window.setTimeout(function () {
elements.css("-webkit-overflow-scrolling", "touch");
}, 100);
});
Note that I haven't tested this fix beyond my iPad 3 other than to ensure that it doesn't cause script errors in Chrome or IE 7/8/9.
In case this is of any use...Incorporating PhoneGap I was using Zepto to append ajax-loaded, scrollable content into the dom. I was then applying a css transition on it. There were no iFrames on the page.
I was experiencing the same issue as mentioned here, where scrolling would just stop working. When I copied the generated code into a separate file and tried that on the iOS simulator - everything worked as expected.
I eventually got it to work by querying the height of the parent container - just before the css transition. By adding var whatever = $('#container').height(); the scrolling worked.
To improve a little bit ThinkingStiff's excelent answer, you can avoid blinking
- if overflow:hidden is set
- if instead of 'auto' value just remove property:
$('.scroll').css({'overflow':'hidden','-webkit-overflow-scrolling':''});
window.setTimeout(function () { $('.scroll').css({'overflow':'auto','-webkit-overflow-scrolling':'touch'})},50);