How to center an image inside a button, using jQuery Mobile? - jquery-mobile

I'm new to jQuery mobile and Phonegap. Sorry if this is not the place to ask for this question.
I'm trying to put a custom image inside a button (not the small icon to the left or to the right but a bigger image).
I use the following code:
<a data-role="button" data-corners="false" data-shadow="false" >
<img src="images/car.png" />
</a>
In the rendering, the image is not centered but goes right.
I have also tried using a class="car-icon" and the corresponding css3 rule:
.ui-icon-car-icon {
background-image: url("car.png");
}
.ui-icon-car-icon {
text-align: center;
}
Any help will be greatly appreciated (I have spent the whole night trying to fix this).
Thanks in advance.

Try using the thing, like this: http://jsfiddle.net/den232/sFupf/
<button><img src="http://doc.jsfiddle.net/_downloads/jsfiddle-logo.png" height=35 width=35 ></button>
Good luck!

You can try setting your image as the background of your link <a>, and centering it using background-position: center center;:
HTML:
<a id="mybutton" data-role="button" data-corners="false" data-shadow="false" > </a>
CSS:
#mybutton {
background: url('car.png') no-repeat scroll 0 0 transparent;
background-position: center center;
}

Related

Material list does not scroll in mobile devices

I am using mat-list and I can't scroll it on mobile devices.
It is a mat-nav-list with some mat-list-item inside, the structure of my list is something like:
<mat-nav-list>
<a mat-list-item matTooltip="dashboard" routerLink="/dashboard">
<mat-icon matListIcon>dashboard</mat-icon>
</a>
...
</mat-nav-list>
I can scroll normally in desktop with the mouse but when I am in a mobile browser I see every mat-list-item with this:
element.style {
user-select: none;
-webkit-user-drag: none;
touch-action: none;
-webkit-tap-highlight-color: transparent;
}
Is the browser applies that CSS itself?
If I try to override with inline style nothing change, how can I solve it?
In my case, the CSS style came from mat-list-item.
So the only thing I can do is to override it directly.
[mat-list-item]{
touch-action: auto !important;
}

Why is my position:sticky not working on iOS?

I'm in the process of coding a sticky notification bar seated at the bottom of a mobile screen. I want the bar to be stuck at the bottom of the users screen until the user has reached the scroll position of where the bar is actually positioned in the code (which is just before the footer of the page).
I have pretty much copied the "doctor" example from this page: https://alligator.io/css/position-sticky/
My problem is: On my page, the bar works fine when using Android Devices or when simulating a mobile device by adjusting the Browser width on my Desktop Computer. However, on iOS, the bar is not sticky, i.e. it just sits at its position and doesn't stick to the bottom of the screen until reached. This applies to both Safari and Google Chrome.
The weird thing is: On the previously mentioned alligator.io page, it works just fine on my iOS device.
I suspect this is some kind of Webkit problem having to do with the code surrounding the bar, but I cannot isolate it. I have tried debugging by adjusting my code as far as possible to the example from alligator.io, but I cannot get it to work. I have also tried looking for any overflow:auto in parent elements - without success. I have been trying to fix this for several hours and am sick and tired of the problem and could use another pair of eyes to help me find what I'm overlooking.
#jobalarm_mobile {
display: table;
font-size: 18px;
width: 100%;
height: 40px;
background: #ff8400;
color: white;
font-weight: 400;
text-align: center;
position: -webkit-sticky;
position: sticky;
bottom: -50px;
align-self: flex-end;
}
<a href="#" class="jobAlertToggle">
<div id="jobalarm_mobile">
<i class="fa fa-bell"></i>
<span>Jobalarm aktivieren</span>
<label class="switch">
<input type="checkbox">
<span class="slider round"></span>
</label>
</div>
</a>
You can visit the live page I am working on at (hidden on request of the customer, please contact me privately).
Simply start any (suggested) search and the bar will pop up (or not, if you are using iOS...)
Thanks in advance for your help.
I feel like an idiot for answering my own question, but I figured out what is causing the problem.
I hope this will help developers facing the same problem because I could not find anywhere defining this behavior.
As you can see, in my code, there is a wrapper (specifically a link) around the element, on which I use my position:sticky:
<a href="#" class="jobAlertToggle">
<div id="jobalarm_mobile">
<i class="fa fa-bell"></i>
<span>Jobalarm aktivieren</span>
<label class="switch">
<input type="checkbox">
<span class="slider round"></span>
</label>
</div>
</a>
For some reason, this is not a problem for Chrome or Firefox on Desktop as well as Android, as they seem to ignore this container, probably because it doesn't define any positioning behavior. This is why it works on other devices. However, iOS does not ignore the container and therefor positions the div relative to its parent container, which is the link. After removing the link for test purposes, it worked on all devices.
This is the real answer
position: -webkit-sticky;
position: -moz-sticky;
position: -o-sticky;
position: -ms-sticky;
position: sticky;
and works!!!
Some of the tips in my answer here may help, notably adding display: block to your container may do the trick.
For me nothing worked except jQuery/javascript in this way: give the element you need to be sticky position:absolute and left: 0, then use javascript to calculate offset of the window to the left, and add that offset to the left property of your element:
#stickyElement {
position: absolute;
left: 0;
}
function scrolling(){
$('.someElementScrollingLeft').on('scroll', function() {
let offset = $(this).scrollLeft();
/* For me it only didn't work on phones, so checking screen size */
if($( window ).width() <= 768)
{
let stickyElement = $('#stickyElement');
stickyElement.css("left", offset);
}
});
}
In my case in full screen menu it was overflow-y: auto. I eliminated this issue by adding: overscroll-behavior: contain.
I visited a website and may be I found solution for you.
Try this it may can help you:
#jobalarm_mobile {
display: none !important;
}
and then place your notification <a> tag at the end (after <footer> tag)
//write this css
.jobAlertToggle{
display: none;
}
#media (max-width: 767px)
.jobAlertToggle{
display: block;
width: 100%;
position:sticky;
position:-webkit-sticky;
bottom:-50px;
}
#jobalarm_mobile {
display: table;
font-size: 18px;
width: 100%;
height: 40px;
background: #ff8400;
color: white;
font-weight: 400;
text-align: center;
-webkit-align-self: flex-end;
align-self: flex-end;
}
For my problem it was:
I had { contain: paint; } in ancestor (container above inside-container).
Changed it to { overflow: clip; }
Sticky would not work if contain: paint was present regardless of having overflow: clip.
This was tested on Iphone 15.4.1. Other tested devices didn't break with contain: paint (tested on chrome, ipad, android)
I had so many problems with this issue as well. The sticky position wouldn't work on my phone - not in Safari or Chrome.
I tried placing the element that I wanted sticky in the top of the surrounding wrapper - it worked! Apparently the sticky position can't really work if there is something above it inside the same parent-wrapper. You don't have to change your order or design, you can just create a wrapper that's around the content, with the sticky element in the top.
<div class="container">
<p>Some text above the sticky element</p>
<div class="inside-container">
<div class="sticky-element">
<p>This is sticky</p>
</div>
<p>Some more text, that scrolls past the sticky element.</p>
</div>
</div>
I think the Problem is, that Safari (the Browser of iOS) does not support position: sticky properly. See this Article (https://caniuse.com/#feat=css-sticky). Read the Known Issues Section to find aut more. Maybe, you have to deactivate it for iOS and show a note on your Page, that its not working properly.
I hope, I could help you.
Use for ios position: -webkit-sticky and for other case position: sticky

Using custom icons on left and right in jquery mobile list

I'm trying to figure out how to add custom icons on the left and right side of a list item. I found this example (see link and code below) but if you notice the icon does not show up, it's just an empty circle. At first I thought it was because the link was invalid but I tried it on my page with my own image but the same thing happened. Unfortunately I only have a reputation of 13 so I am not allowed to post pictures, however here is a sample of how I would like the li item to have icons on both ends.
-*****************************-
| icon_left TEXT icon_right |
-*****************************-
<html>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.css" />
<script src="http://code.jquery.com/jquery-1.6.4.min.js"></script>
<script src="http://code.jquery.com/mobile/1.0.1/jquery.mobile-1.0.1.min.js"></script>
<style>
.ui-icon-myapp-smiley {
background-image: url(http://swiftthemes.com/forums/images/icons/icon6.png) !important;
}
</style>
<div data-role="page">
<div data-role="content">
<ul data-role="listview">
<li data-icon="myapp-smiley">My LI!!!</li>
</ul>
</div>
</div>
</html>
Code on jsfiddle page http://jsfiddle.net/KYaQT/
jQM 1.0.1 is quite old and outdated now. You should upgrade to 1.4 and jQuery 1.9 or greater.
<ul data-role="listview" data-inset="true" >
<li data-icon="myicon"><span class="ui-icon-myicon2 ui-btn-icon-notext inlineIcon"></span>Text in list item 1</li>
</ul>
.ui-icon-myicon:after {
background-image: url("http://people.mozilla.org/~shorlander/files/australis-linux-svg-test/images-linux/toolbarButton-bookmark.svg");
}
.ui-icon-myicon2:after {
background-image: url("http://forum.librecad.org/images/gear.png");
}
.inlineIcon {
display: inline-block;
position: relative;
vertical-align: middle;
margin-right: 6px;
}
For the icon on the right you had the correct approach. Set the data-icon attribute on the <LI>. In jQM 1.4, the CSS uses the pseudo :after element for the background image.
To add an icon on the left, you can put a span inline with the text and add CSS to position it.
If you don't want the gray disk behind the icon, set the background color transparent:
.ui-icon-myicon2:after {
background-image: url("http://forum.librecad.org/images/gear.png");
background-color: transparent;
}
Here is a DEMO

Jquery Mobile CSS problems

I am trying to get an anchor in jquery to line up horizontally right next to a checkbox in a list structure. I previously had the checkbox inside of the anchor object, and this produced the result I wanted but now I want the checkbox to have a separate functionality then the anchor element, thus I wish to separate them. The CSS I am using is as follows, and as you can see from Jsfidle, it looks horrible with the checkbox floating to the top right spot of the button. Answers on here have noted that using field contain or display:inline would fix the problem but I have been unable to get it to work.
<div data-role="main" class="ui-content">
<h3>Some header</h3>
<ul data-role="listview" id = "tasklistTasks">
<li>
<div data-role="fieldcontain" style=" display:inline" >
<input type="checkbox">
Go here
</div>
</li>
<li>
<div data-role="fieldcontain" style=" display:inline" >
<input type="checkbox">
Go here
</div>
</li>
</ul>
</div>
I am using Jquery 2.1 and Jquery mobile 1.4.2. Thanks for any help
The reason for this behavior is that the checkbox is getting the CSS from the jquery mobile CSS you have applied. Inside that particular CSS, your checkbox class' CSS is getting overridden and it has :
margin: -11px 0 0 0;
due to which it is coming to the top left corner of your parent div.
If you are not using CDN of that CSS and you have that downloaded version, you can modify this with :
.ui-checkbox input, .ui-radio input {
position: absolute;
left: .466em;
width: 22px;
height: 22px;
margin: 12px 0 0 0;
outline: 0!important;
z-index: 1;
display: inline-block;
}
You can also see yourself by debugging it in your browser.
Here is how it looks now and i guess this is what you wanted:
http://jsfiddle.net/appleBud/bWFYv/2/
Hope this helps.

ASP MVC3 Use image as link to a different View/Controller

Sorry if this is a benign question but still new to ASP MVC3 - what is the best syntax for using an image as a link? It needs to navigate to the Index.cshtml page of another Controller (called Home).
What I have below causes the image to completely disappear:
<a href="#Url.Action("Index", "Home")><img src="#Url.Content("~/Content/images/Monet3.png")" id="MonetSig" /></a>
I think that there is a closing " missing after #Url.Action("Index", "Home") it might be the problem
I would use CSS to give the anchor a background image. This way you can easily change the image for mobile or tablets:
CSS:
#MonetSig {
display: block;
width:100px; /* change this to your image width and height */
height:100px;
background: url('../images/Monet3.png') no-repeat;
}
Html:
<a id="MonetSig" href="#Url.Action("Index", "Home")"></a>

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