jquery mobile for BlackBerry z10 image link zooms - javascript

I'm developing a mobile app for BlackBerry z10 with jquery mobile for BlackBerry 10. I used an image as a button, but when I double tap the image, the whole app zooms.
This is the code I used:
<img src="images/buttons/page1.png"/>
but the other images are not zooming at all (image with no links).
What seems to be the problem while I'm having this code here:
<meta name="viewport" content="user-scalable=0, initial-scale=0.45, maximum-scale=0.45, minimum-scale=0.45, width=device-width, height=device-height" charset="UTF-8"/>
Can anyone help me to get rid of this.
Thanks in advance.

This is one method that I found, Please check it:
<meta id="viewport" name="viewport" content="width=device-width, height=device-height, user-scalable=no/">
Another method would be:
<script>
var meta = document.createElement("meta");
meta.setAttribute('name','viewport');
meta.setAttribute('content','initial-scale='+ (1/window.devicePixelRatio) + ',user-scalable=no');
document.getElementsByTagName('head')[0].appendChild(meta);
</script>

Try using a virtual click event. Maybe it is because the click event is meant for mouse click, and the BB Z10 is a touch screen device where you tap to select something.
<img src="images/buttons/page1.png"/>
$("#show_something").on("vclick",function(e){
// show something code
e.preventDefault();
});

Related

Benalman Js does not working in Ipad. hashchange

I using Benalman JS to control the back button window redirect url to home.
I tested in normal browser and Android phone, it work accordingly.
But it does not work in Ipad,
here is a part of the code.
<!DOCTYPE html>
<html>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="jquery.min.js"></script>
<script src="jquery.ba-hashchange.min.js"></script>
<script>
// control back button
// includes in js mean contains
if(!window.location.href.includes('#state')){
history.pushState(null ,document.title, '#state'); // forwards
}
// Bind an event handler.
jQuery(window).bind('hashchange', function(e) {
window.location = _contextPath + "/home/";
});
</script>
</html>
I notice that in Ipad the url will not append the "#state".
I suspect history.pushState not work in Ipad.
How can I fix this?
Thank you
The problem fixed after I change
includes
To
indexOf
Nothing to do with Benalman Js library. This js can excluded.
Thank you.

Change Chrome tab color with JavaScript or jQuery

In Chrome you can set the color of a tab with the meta tag:
<meta name="theme-color" content="#FFA000">
In my website, I have several sections color-coded. To make it look better, I would like to dynamically change the tab's color according to the currently opened section. I have tried doing it with jQuery:
$("meta[name='theme-color']").attr('content', '#455A64');
But it doesn't work. I would be very glad if someone can tell me if/how you can change this meta value during runtime.
Edit: After some checks I noticed that the code does change the meta tag content, but Chrome doesn't update the tab color.
For this who land on this page from Google looking for a vanilla JS solution:
document.querySelector('meta[name="theme-color"]').setAttribute('content', '#123456');
Your jQuery code is correct. If you want to flicker the title bar and drive your users off, try this:
<!DOCTYPE html>
<html>
<head>
<title>Unicorns!</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">
<meta name="theme-color" content="#FF0000">
</head>
<body>
<h1>Unicorns are <b id="x">#FF0000</b></h1>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script>
$(function() {
var i = 0;
var colors = ["#FF0000", "#FFFF00", "#00FF00", "#00FFFF", "#0000FF"];
setInterval(function() {
var color = colors[i = i++ > 4 ? 0 : i];
$("meta[name='theme-color']").attr('content', color);
$("#x").text(color);
}, 500);
});
</script>
</body>
</html>
I've tested this on my Nexus 5 with Chrome 40.0.2214.89 and Android version 5.1.1, and seen it work. Not sure what to think of this type of feature yet though... :P
Not all fiddle tools will allow you to show the effect though, because I think use of iframes may prevent you from reproducing it properly. I've found that Plnkr did work though. Visiting this demo Plnkr showed the effect on abovementioned device.
Turns out, it doesn't work with android Chrome versions 43.x & 44.x. In other versions all the Code above works. In version 45.x it even fades from one color to the other, making it look really cool!

How to open a new window on iphone's standalone (fullscreen) mode

<!doctype html>
<html>
<head>
<title>page</title>
<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0, maximum-scale=1.0"/>
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
</head>
<body>
<script>
function goToPage() {
var pageUrl = 'http://www.google.com/';
window.open(pageUrl);
}
</script>
<div id="installBtn" onclick="goToPage()">go to page</div>
</body>
</html>
The expected action is: when touch the div, a new window opens.
This code works great in the iPhone's safari.
But when I tap "+" -> "Add to Home Screen", and press "go to page", no window is opened, and the page loads in the same screen.
How to force, by javascript, a new window to open in the standalone mode?
The below question does mention a possible JavaScript solution out of the top voted answers, which constructs the anchor element and dispatches the 'click' event on it.
Question: Force link to open in mobile safari from a web app with javascript
Answer: https://stackoverflow.com/a/8833025/1441046
Alternatively if you can use an anchor element (I know you asked how to do it in JavaScript) you can do the following:
<a id="installBtn" href="http://www.google.com/" target="_blank">go to page</a>
Other related questions:
iPhone window.open(url, '_blank') does not open links in mobile Safari
This works for me. Doesn't work when requesting it from html, only from JS.
window.open('[url]','_system');
you can use childbrowser to open in the standalone mode
Or you can use this
window.location = url(your Url);
There you go! (if you still need it)
<script>
if(window.navigator.standalone === true)
document.write('Standalone');
else
document.write('Web browser');
</script>
R.

How do I hide the address bar on iPhone?

How do I hide the address bar on iPhone?
I tried two different methods so far:
The scroll down one pixel trick with JavaScript on page load
And the following meta tags:
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=0;" /><meta name="apple-mobile-web-app-capable" content="yes" />
Also this:
<meta names="apple-mobile-web-app-status-bar-style" content="black-translucent" />
I am completely confused.
PS: Oh, I forgot a really important thing: the web page itself does not overflow the browser window. It probably is the reason why the 1 pixel scrolldown trick does not work.
I can't make it bigger, since the hit thing about the design, that everyone can scroll, but this page folds... :)
I just hit this myself. If the address bar is not hiding, the reason may simply be the page is not long enough to scroll.
When the
window.scrollTo(0,1)
is called the page MUST be longer than the window so a scrolling event can occur.
Only when the scrolling even occurs will mobile safari hide the address bar.
🔴 UPDATE: Apple removed support for minimal-ui in iOS 8 so this is no longer a useful answer :(
For new googlers looking into this: As of iOS 7.1 there's a new minimal-ui mode that works on mobile Safari:
It's enabled by setting the minimal-ui property on the viewport:
<meta name="viewport" content="minimal-ui">
You can also use it in conjunction with other properties like so:
<meta name="viewport" content="width=device-width, minimal-ui">
Of note, there's no minimum content length requirement as there is with the scrollTo hack. There's a great overview of this new mode here. (That's where the above image comes from.) He also lists some shortcomings.
The only official documentation I could find on this is a note in Apple's iOS 7.1 release notes:
A property, minimal-ui, has been added for the viewport meta tag key that allows minimizing the top and bottom bars on the iPhone as the page loads. While on a page using minimal-ui, tapping the top bar brings the bars back. Tapping back in the content dismisses them again.
For example, use <meta name="viewport" content="width=1024, minimal-ui”>.
Of course, since this only works in iOS 7.1 and above, it's usefulness may be limited.
Unless something has changed in recent iOS versions, the scroll down trick is the only one that reliably works, I've had no issues with this version:
/mobile/i.test(navigator.userAgent) && !location.hash && setTimeout(function() {
window.scrollTo(0, 1);
}, 1000);​
I didn't care about any other mobile platform for this particular page though, it was redirecting based on agent...you may want to change the regex to check for iPhone specifically, e.g. replace /mobile/ with /iPhone/.
I think this version is actually better. It tests to see if the user has already begun scrolling, which is an issue I noticed in my mobile project.
/Mobile/.test(navigator.userAgent) && !location.hash && setTimeout(function () {
if (!pageYOffset) window.scrollTo(0, 1);
}, 1000);
You can run the function when the site content is ready instead of using timeout
addEventListener("load", function() {
window.scrollTo(1, 0);
}, false);
Try:
setTimeout(function () {
window.scrollTo(0, 1);
}, 1000);
If using jQuery, put it at the end of $(document).ready();. The time-out allows for the browser to determine the height of the page...
In case none of these solutions work and you are running into the very narrow issue that I faced, here's what fixed it for me.
I had this in my CSS
html{position: relative; height: 100%; overflow: hidden;}
This css applies a fix to one of my pages only, so I restricted it with a condition to that page, and the address bar is now behaving correctly on all other pages.
I have been searching around on this full screen web app as well and i found this.
http://www.onlywebpro.com/2015/07/19/optimizing-full-screen-mobile-web-app-for-ios/
Basically you need add the following in your header:
<meta name="viewport" content = "width = device-width, initial-scale = 1.0, minimum-scale = 1, maximum-scale = 1, user-scalable = no" />
//App name
<meta name="apple-mobile-web-app-title" content="App name" />
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
//APP ICONS
<link rel="apple-touch-icon" href="/img/icon.png">
<link rel="apple-touch-icon" sizes="76x76" href="/img/icon.png">
<link rel="apple-touch-icon" sizes="120x120" href="/img/icon.png">
<link rel="apple-touch-icon" sizes="152x152" href="/img/icon.png">
Open the site in Safari
Tap on the "Open with" icon ( arrow pointing upwards and box below it) beside refresh button at the URL bar
Select "Add to home screen"
Go to the homescreen and open the "App name"
Voila! website with no URL bar or navigation buttons!
<meta name="apple-mobile-web-app-capable" content="yes" />
iPhone Configuring Web Applications
I think it will never be solved unless the content is more than the browser window.
Here is some code that will hide the URL on load, on orientation change, and on a touchstart (the touchstart should only be used if you have a persistent hidden URL, which is a whole other can of worms - if you don't, remove that part of the script).
if( !window.location.hash && window.addEventListener ){
window.addEventListener("load", function() {
setTimeout(function(){
window.scrollTo(0, 0);
}, 0);
});
window.addEventListener( "orientationchange",function() {
setTimeout(function(){
window.scrollTo(0, 0);
}, 0);
});
window.addEventListener( "touchstart",function() {
setTimeout(function(){
window.scrollTo(0, 0);
}, 0);
});
}
<meta charset="utf-8"><meta name="description" content="{MF_PLUGIN_SETTING:HOME_DESCRIPTION}"/><meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,minimum-scale=1"/><meta name="apple-mobile-web-app-capable" content="yes"><meta name="mobile-web-app-capable" content="yes">
This is used for adding a ios web app to the homescreen without the searchbar.

Mobile Safari scrollTo w/ textarea bug

Have stumbled upon what seems to be a bug with how mobile safari renders the cursor when a window.scrollTo() is executed while a user is entering text into a textarea. Have attached source code which illustrates the issue. I'm wondering if anyone has any advice on how I might work around this.
The issue: If a user is entering text into a textarea and a window.scrollTo() is executed, the cursor remains rendered at the position the textarea used to be, not at it's current position.
To recreate: Load the following web page using mobile safari. Touch the textarea, which will open the keyboard. Type a couple of characters and wait. As text is added dynamically to the page, and the window scrolled, you'll see the cursor artifact
Have tried setting the focus() back to the textarea after the scroll, but that doesn't seem to have any effect.
Thanks!
<html>
<head>
<meta id="viewport" name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0; user-scalable=no;" />
<style type="text/css" media="screen">
textarea {
margin-top:50px;
}
</style>
<script type="text/javascript" charset="utf-8">
window.addEventListener('load', function() {
setTimeout(addContent,5000);
}, false);
function addContent() {
var elem = document.createElement('p');
elem.appendChild(document.createTextNode('Some new text'))
document.getElementById('newContentContainer').appendChild(elem);
window.scrollTo(0,20);
setTimeout(addContent,5000);
}
</script>
</head>
<body>
<div id="newContentContainer"></div>
<div>
<textarea></textarea>
</div>
</body>
</html>
Here's a photo which shows the problem:
I'm pretty sure this may solve the problem, and most likely will also make the on-screen keyboard flash off and back on for a tiny bit too. Call this code after you use scrollTo():
yourTextArea.blur();
yourTextArea.focus();

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