问题
How does jQuery mobile hide mobile safari's addressbar? I think I need a similar solution, but i don't want to use jQuery mobile ...
I tried:
http://davidwalsh.name/hide-address-bar
but that doesn't work in my case.
My first child of the body is an absolute positioned div
with -webkit-overflow-scrolling: touch;
The -webkit-overflow-scrolling property seems to cause this problem,
without that property it works fine.
Part of this problem is the address bar always stays in foreground, even if I scroll the page down per hand. this is caused by the absolute positioning.
But, without absolute positioning, "-webkit-overflow-scrolling: touch;" doesn't work ...
After a big fight with thousends of lines jquery-mobile code, i ended up with this ;)
Solution
<!DOCTYPE html>
<html>
<head>
<title>title</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<!-- viewport -->
<meta content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" name="viewport" />
<style type='text/css'>
body {
background: #E0E0E0;
margin: 0;
padding: 0;
}
.page-wrapper {
width: auto;
}
/* native overflow scrolling */
.mobile-touch-overflow {
overflow: auto;
-webkit-overflow-scrolling: touch;
-moz-overflow-scrolling: touch;
-o-overflow-scrolling: touch;
-ms-overflow-scrolling: touch;
overflow-scrolling: touch;
}
.mobile-touch-overflow,
.mobile-touch-overflow * {
/* some level of transform keeps elements from blinking out of visibility on iOS */
-webkit-transform: rotateY(0);
}
.page-header {
display: block;
background: gray;
border-bottom: 1px solid #CDCDCD;
padding: 10px;
}
.page-content {
padding: 10px;
}
.page-footer {
display: block;
border-top: 1px solid #CDCDCD;
margin-left: 10px;
margin-right: 10px;
padding: 10px;
padding-left: 0;
padding-right: 0;
text-align: center;
font-size: 12px;
color: #FFF;
}
</style>
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script type="text/javascript">
/*
* utils
*/
var utils = {
supportTouchOverflow : function(){
return !!utils.propExists( "overflowScrolling" );
},
supportOrientation : function(){
return ("orientation" in window && "onorientationchange" in window);
},
//simply set the active page's minimum height to screen height, depending on orientation
getScreenHeight : function(){
var orientation = utils.getOrientation(),
port = orientation === "portrait",
winMin = port ? 480 : 320,
screenHeight = port ? screen.availHeight : screen.availWidth,
winHeight = Math.max( winMin, $( window ).height() ),
pageMin = Math.min( screenHeight, winHeight );
return pageMin;
},
// Get the current page orientation. This method is exposed publicly, should it
// be needed, as jQuery.event.special.orientationchange.orientation()
getOrientation : function() {
var isPortrait = true,
elem = document.documentElement,
portrait_map = { "0": true, "180": true };
// prefer window orientation to the calculation based on screensize as
// the actual screen resize takes place before or after the orientation change event
// has been fired depending on implementation (eg android 2.3 is before, iphone after).
// More testing is required to determine if a more reliable method of determining the new screensize
// is possible when orientationchange is fired. (eg, use media queries + element + opacity)
if ( utils.supportOrientation() ) {
// if the window orientation registers as 0 or 180 degrees report
// portrait, otherwise landscape
isPortrait = portrait_map[ window.orientation ];
} else {
isPortrait = elem && elem.clientWidth / elem.clientHeight < 1.1;
}
return isPortrait ? "portrait" : "landscape";
},
silentScroll : function(ypos) {
setTimeout(function() {
window.scrollTo( 0, ypos );
}, 20 );
},
propExists : function(prop) {
var fakeBody = $( "<body>" ).prependTo( "html" ),
fbCSS = fakeBody[ 0 ].style,
vendors = [ "Webkit", "Moz", "O" ],
uc_prop = prop.charAt( 0 ).toUpperCase() + prop.substr( 1 ),
props = ( prop + " " + vendors.join( uc_prop + " " ) + uc_prop ).split( " " );
for ( var v in props ){
if ( fbCSS[ props[ v ] ] !== undefined ) {
fakeBody.remove();
return true;
}
}
},
hideAdressbar : function(){
if(utils.supportTouchOverflow()){
$('.mobile-touch-overflow').height( utils.getScreenHeight() );
}
utils.silentScroll(1);
}
};//utils end
// WINDOW LOAD
$(window).load(function(){
utils.hideAdressbar();
});
</script>
</head>
<body>
<div class="page-wrapper mobile-touch-overflow">
<header class="page-header">Header</header>
<div class="page-content">
<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###
<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###
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<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###<br>###
</div>
<footer class="page-footer">Footer</footer>
</div>
</body>
</html>
works fine, tested in android 2.1 & iphone4(ios5+)
there was another Problem with this code, fixed here: Hide address bar in mobile Safari when scrolling (touchOverflow)
回答1:
FINAL EDIT, SOLVED
It has nothing to do with -webkit-overflow-scrolling, but rather your height: 100%. (Don't know why I missed it before).
The only difference between your file is the <meta> tag changes outlined below and commenting out height in the CSS.
Tested on iPhone 4S/iOS 5.1.
ORIGINAL RESPONSES
This is what we use:
window.addEventListener("load",function() {
setTimeout(function(){
window.scrollTo(0, 1);
}, 0);
});
It works everytime.
And we only use addEventListener since the only phones we care about are webkit based...
EDIT
Your -webkit-overflow-scrolling div shouldn't matter here. Have you tried placing it 1 pixel down on the page? Regardless, any scroll down should just cover the top pixel of your absolutely positioned div.
EDIT
So I loaded one of your examples and this is popping up in the error console: (this doesn't fix the issue, but...)
Viewport argument value "device-width;" for key "width" not recognized. Content ignored.
/dev/1/:7Viewport argument value "1.0;" for key "initial-scale" was truncated to its numeric prefix.
/dev/1/:7Viewport argument value "1.0;" for key "maximum-scale" was truncated to its numeric prefix.
Looking at your <meta> tag I see:
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;">
You need to use a , not a ;
<meta content="width=device-width, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" name="viewport" />
回答2:
I'm adding this because I wasted some time debugging this. The scroll bar will only hide if the page is longer than the viewport. If your page is too short, and can't scroll, then this code does not hide the address bar.
This is right, no reason to hide if there isn't any content to make space for, but it did take me a couple minutes to figure out why it was working on some pages and not others.
window.addEventListener("load",function() {
setTimeout(function(){
window.scrollTo(0, 1);
}, 0);
});
回答3:
This is the code JQM uses:
// Scroll page vertically: scroll to 0 to hide iOS address bar, or pass a Y value
silentScroll: function( ypos ) {
if ( $.type( ypos ) !== "number" ) {
ypos = $.mobile.defaultHomeScroll;
}
// prevent scrollstart and scrollstop events
$.event.special.scrollstart.enabled = false;
setTimeout(function() {
window.scrollTo( 0, ypos );
$( document ).trigger( "silentscroll", { x: 0, y: ypos });
}, 20 );
setTimeout(function() {
$.event.special.scrollstart.enabled = true;
}, 150 );
}
回答4:
<meta name="apple-mobile-web-app-capable" content="yes" />
来源：https://stackoverflow.com/questions/9798158/how-does-jquery-mobile-hide-mobile-safaris-addressbar