i have included view-port meta tag in header i.e.
<meta name="view-port" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0"/>
but in iPhone screen..its allow user to zoom screen using pinch in/pinch out.
document.documentElement.addEventListener('touchstart', function (event) {
if (event.touches.length > 1) {
event.preventDefault();
}
}, false);
Related
In previous iOS (12 and before) or any Android phone, we are able to use the [Add to Home Screen] in Safari (or any browser in Android) and hide the toolbars of a PWA by using the following techniques:
in Index.html:
<head>
<meta name="viewport" content="viewport-fit=cover, width=device-width,initial-scale=1.0, maximum-scale=1.0, shrink-to-fit=no">
<link rel="apple-touch-icon" href="/customicon.png"/>
<meta name="mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="application-name" content="BGBG01">
<meta name="apple-mobile-web-app-title" content="BGBG01">
<meta name="msapplication-starturl" content="/">
<link rel="manifest" href="manifest.json">
</head>
Create a file manifest.json in the root directory, with the following content:
{
"name": "App Full Name",
"short_name": "AppName",
"lang": "zh-CN",
"start_url": "/",
"scope": "/",
"display": "standalone"
}
However, since iOS 13, the above method does not work anymore, the toolbars persist and we need to click the aA on the left hand side of the Address Bar, then choose [Hide Tool Bar] EVERY TIME, in order to hide the toolbars of the PWA.
So how can we hide the toolbars?
Edit
Just want to emphasize that the following js code does not work as well:
<script>
if (navigator.userAgent.match(/iPhone/i) || navigator.userAgent.match(/iPad/i)) {
/* iOS hides Safari address bar */
window.addEventListener("load",function() {
setTimeout(function() {
window.scrollTo(0, 1);
}, 1000);
});
}
</script>
or
<body>
<button id="goFS">Go fullscreen</button>
<script>
var goFS = document.getElementById("goFS");
goFS.addEventListener("click", function() {
document.body.requestFullscreen();
}, false);
</script>
</body>
And the solution provided by this link is also not working:
https://codepen.io/akikoo/pen/xdaic
Can be smart and efficiently for your case this method?
Using this minimal webmanifest the menu bar disappear for you too?
{
"name": "My Super App",
"short_name": "My App",
"display": "standalone",
"scope": "/my-app-path/",
"start_url": "/my-app-path/"
}
we are making an HTML5 app where width is not know at design time.
So we change the viewport tag at runtime to match the desidered size.
e.g.
<meta name="viewport" id="viewport-meta" content="width=' + params.mobilePortraitWidth + ', initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
The problem on iOS is that after we change the viewport size, view is not correctly scaled until we double tap the screen.
EDIT, after double tap is all fine, so: how can we "DOUBLE TAP" programmatically?
Thank you very much
NSString *js = #"var t=document.createElement('meta'); t.name="viewport"; t.content="initial-scale=1.0, maximum-scale=3.0"; document.getElementsByTagName('head')[0].appendChild(t);";
[myWebView stringByEvaluatingJavaScriptFromString:js];
EDIT
Thanks for update.
I had very similar issue and remember that setting viewport meta tag solved it.
If you are trying to modify this meta tag just after loading html, try doing that in webViewDidFinishLoad (loadRequest is asynchronous).
Another solution would be to read your html file into NSString and replace that meta tag before loading it to webView.
Hope it helps!
Thank you very much for your replies, I would like to share the solution we found after some test on iPhone 5s with iOS 9.2 and iPad Air with iOS 8.4.
Basically, to make it work, we didn't set initial-scale=1.0, maximum-scale=1.0, user-scalable=no
Following a working example
<html>
<head>
<meta name="viewport" id="viewport-meta" content="width=device-width, user-scalable=no" />
<style>
html, body { -webkit-text-size-adjust: 100%; }
h1 { padding: 1em; background-color: #FF80BB; }
</style>
</head>
<body>
<h1>I am the page content</h1>
<button id="s320">Set 320</button><br />
<button id="s640">Set 640</button><br />
<button id="s960">Set 960</button>
<script>
function setViewportWidth(newWidth) {
var m = document.getElementById("viewport-meta");
m.setAttribute('content', 'width=' + newWidth + ', user-scalable=no');
}
document.getElementById("s320").onclick = function () { return setViewportWidth(320); };
document.getElementById("s640").onclick = function () { return setViewportWidth(640); };
document.getElementById("s960").onclick = function () { return setViewportWidth(960); };
</script>
</body>
</html>
My problem is for my webpage designed for iOS. When testing on iPhone 5 (Safari) it loads fine in portrait mode then flips fine to landscape mode. But when going back to Portrait from Landscape it zooms in. I don't have this issue with iOS Chrome thought.
I've tried lots of different meta tags like :
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" >
But they seem to only cover the opposite issue of going from portrait to landscape zooming.
Some help would be greatly appreciated. I've spend many hours searching without success.
Here's a link if you wish to try it on a mobile device: http://www.blueberry-studio.co.uk/Robomoco_Websites/Device_iPhone_5/
and here's the code used:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta http-equiv="X-UA-Compatible" content="chrome=1,IE=edge" />
<meta name="viewport" content="user-scalable=no, width=1280" />
<meta name="apple-mobile-web-app-capable" content="yes"/>
<style type="text/css">
#media screen and (orientation:portrait)
{
#robomocomobileportrait_hype_container {
display: block;
}
#robomocomobilelandscape_hype_container{
display: none;
}
}
#media screen and (orientation:landscape)
{
#robomocomobileportrait_hype_container {
display: none;
}
#robomocomobilelandscape_hype_container {
display: block;
}
}
</style>
<div id="robomocomobileportrait_hype_container" style="position:relative;overflow:hidden;width:1280px;height:2260px;">
<script type="text/javascript" charset="utf-8" src="Robomoco_mobile_portrait.hyperesources/robomocomobileportrait_hype_generated_script.js?71837"></script>
</div>
<div id="robomocomobilelandscape_hype_container" style="position:relative;overflow:hidden;width:1280px;height:720px;">
<script type="text/javascript" charset="utf-8" src="Robomoco_mobile_landscape.hyperesources/robomocomobilelandscape_hype_generated_script.js?17049"></script>
</div>
I've found a way that resolves my problem:
var alsoenlarge = true;
$(function(){
if(isScalePossible()){
$('body').css({overflow:'hidden'}); //geen scrollbars
$('#scalecontainer').css({position: 'absolute', margin: 0}); //centreren met de hand na resize
// Run scale function on start
scaleSite();
scaleSite();
// run scale function on browser resize
$(window).resize(scaleSite);
}
});
function scaleSite()
{
windoww = $(window).width();
sitew = $('#scalecontainer').width();
f = windoww/sitew;
if(!alsoenlarge && f>1) f = 1;
$('#scalecontainer').css({
"-moz-transform" : "scale("+f+")",
"-webkit-transform" : "scale("+f+")",
"-ms-transform" : "scale("+f+")",
"-o-transform" : "scale("+f+")",
"transform" : "scale("+f+")",
"left" : ((windoww-(sitew*f))/2)+"px"
});
}
function isScalePossible()
{
can = 'MozTransform' in document.body.style;
if(!can) can = 'webkitTransform' in document.body.style;
if(!can) can = 'msTransform' in document.body.style;
if(!can) can = 'OTransform' in document.body.style;
if(!can) can = 'transform' in document.body.style;
if(!can) can = 'Transform' in document.body.style;
return can;
}
And my content in this div:
<div id="scalecontainer"> </div>
I've been trying to test my code on my iphone 4, I am running iOS6.
Everything looks fine and dandy inside of the iphone when in portrait mode, however when I switch to landscape everything is zoomed in! Any suggestions? My viewport code is below along with the css condition.
<meta name="viewport" content="width=device-width, minimum-scale=1.0, maximum-scale=1.5, user-scalable=0" />
#media screen and (max-device-width: 480px) {
#sidebar {
width:38px;
}
.menuhide {
display:none;
}
.menushow {
display:inline;
}
#mainframe {
margin-left:38px;
}
}
Thanks again!
Maybe using this:
<meta name="viewport" content="width=device-width, initial-scale=1.0 user-scalable=0">
On my jQuery Mobile project I'm using the following code:
<meta name="viewport" content="width=device-width, minimum-scale=1, maximum-scale=1">
I'm getting the Safari browser address bar and nav footer. How can I hide those so I can just have my app showing?
You can setup a few meta tags to tell iOS that your site can be added to the Home Screen as a web app. Once launched from there, all of the Safari elements are hidden.
Check out the section titled "Hiding Safari User Interface Components" here.
You can specify start up splash screen images and custom icons for the app as it appears on the home screen.
<meta name="viewport" content="width=device-width, minimum-scale=1, maximum-scale=1">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
<link rel="apple-touch-icon" href="apple-touch-icon-57x57.png" />
<link rel="apple-touch-icon" sizes="72x72" href="apple-touch-icon-72x72.png" />
<link rel="apple-touch-icon" sizes="114x114" href="apple-touch-icon-114x114.png" />
<link rel="apple-touch-startup-image" href="apple-touch-startup-image-320x460.png" />
<link rel="apple-touch-startup-image" sizes="768x1004" href="apple-touch-startup-image-768x1004.png" />
You should not need a <meta> tag. jQuery mobile should take care of hiding the address bar on iOS. Never been able to get the nav footer disappear myself.
Rob,
try adding below script. This should do the trick of opening new request in the same window
<script type="text/javascript">
window.onload = function () {
var a = document.getElementsByTagName("a");
for (var i = 0; i < a.length; i++) {
if (a[i].className.match("noeffect")) {
// Does nothing
}
else {
a[i].onclick = function () {
window.location = this.getAttribute("href");
return false;
};
}
}
};
</script>