A child div with "pointer-events: auto" does not receive any events when parent has "pointer-events: none" on mobile. Same thing works perfectly on desktop browsers. Why is that?
Here's my setup:
HTML
<div class="top">
<div class="top-content">
<p>top content</p>
</div>
</div>
<div class="bottom">
<div class="bottom-content-positioning-helper"></div>
<div class="bottom-content">
<p>bottom content</p>
</div>
</div>
CSS
.top {
width: 100%;
height: 300px;
position: absolute;
left: 0;
top: 0;
right: 0;
z-index: 500;
overflow: auto;
}
.top-content {
background-color: red;
width: 100%;
height: 600px;
text-align: center;
}
.bottom {
position: absolute;
top: 150px;
right: 0;
bottom: 0;
left: 0;
z-index: 1000;
overflow: auto;
pointer-events: none;
}
.bottom-content-positioning-helper {
background-color: yellow;
width: 100%;
height: 150px;
display: inline-block;
vertical-align: top;
opacity: 0.5;
pointer-events: none;
}
.bottom-content {
background-color: green;
width: 100%;
text-align: center;
display: inline-block;
vertical-align: top;
pointer-events: auto;
}
The two parent divs "top" and "bottom" with are stacked vertically. Both have a content div nested inside that is larger in height than their parent. As both parents also have "overflow: auto", they scroll their content. Nothing special until here.
When scrolling "bottom-content", it covers "top" until its middle and then crops any further scrolling.
In order to still be able to scroll "top-content" with a cursor in the lower half of "top", (while "bottom-content" is at scroll position 0), "pointer-events: none" and "auto" are used on "bottom" and "bottom-content".
Please check out my JSFiddle to better understand what's happening here.
Everything is working just fine on desktop browsers. But not at all on mobile. I tested it:
within a cordova app on iOS and android
on chrome and safari on iOS
on chrome on android
On mobile "bottom-content" is not scrolling, as it is not receiving any events. Even though, it is explicitly told to do so with "pointer-events: auto"...
Any hint much appreciated!
Ok, I still don't know why this is happening, but I found a way around it. I now read the touch events on the "bottom" element and reapply them to the scrollTop() property of THE SAME element via javascript. This sounds a bit weird, as this should be happening on its own, but it totally works! And the performance impact is minimal.
var lastScrollTop = 0;
var startY;
$(".bottom-content").on("touchstart", function(e){
//necessary for mobile browsers
startY = e.originalEvent.touches[0].clientY;
lastScrollTop = $(".bottom").scrollTop();
});
$(".bottom-content").on("touchmove", function(e){
//necessary for mobile browsers
var currentY = e.originalEvent.touches[0].clientY;
var scrollDistance = startY - currentY;
$(".bottom").scrollTop(scrollDistance + lastScrollTop);
e.preventDefault();
});
Here's the updated JSFiddle. Make sure to check it on desktop and on mobile again!
Related
I have a mobile web chat app as shown screenshot
, I have a textbox at the bottom of screen which is in footer and on android browsers, the textbox is not coming up on focus whereas in ios its working fine. Can any one help. developement in ReactJs.
footer: {
zIndex: 2,
bottom: 0,
boxSizing: "border-box",
left: 0,
position: "absolute",
right: 0,
background: "#fff",
position: "relative",
padding: "0 10px",
boxShadow: "0px -1px 10px 0px rgba(0,0,0,.12)"
}
You have used the position property twice one is absolute and another is relative.
Try using only one value and see the result. Hope it will work.
I just used a simple logic by using jquery
Here I am Use HTML :
<div></div>
<footer>
<input type="text"/>
</footer>
Here I am use Jquery :
$(document).ready(function(){
$('div').click(function(){
$('footer').removeClass('make-top');
});
$('footer > input').click(function(){
$('footer').addClass('make-top');
});
});
Here the CSS :
div{
height:200px;
}
footer{
z-index: 2;
bottom: 0;
box-sizing: border-box;
left: 0;
position: fixed;
right: 0;
background: #fff;
position: relative;
padding: 0 10px;
box-shadow: 0px -1px 10px 0px rgba(0,0,0,.12);
transition:.5s;
}
#media (max-width:600px){
.make-top{
bottom:100px;// Mention the keyboard layout actual height.
}
}
Just take the keycode while the back button pressed : and remove this class via jquery..
I hope this will help.
Issues fixed. my main div when media max-width: 767px i was giving height 100% !important. this was stopping android webpages not to show textbox as the height was important and i removed it. but this was not causing issue in IOS browsers.
https://i.stack.imgur.com/SLPy5.png
The site I am talking about is currently live. It works quite well for me. There is just one mistake that drives me crazy:
On the standard Android Browser (tested on 4.1.2, LG), the logo is stretched and resized in a very bad way. You can see a demo below.
The CSS for positioning and sizing the logo is quite simple, using position: absolute on a position: fixed element:
Markup
<div class="fixed">
<div id="logo">
<a href="logo-link">
<img src="logo.jpg" height="55" width="34">
</a>
</div>
</div>
CSS:
* {box-sizing: border-box} /* bootstrap system */
.fixed {
position: absolute;
top: 0;
left: 0;
right: auto;
bottom: auto;
height: 85px;
}
.logo {
width: 85px;
position: absolute;
top: 0;
left: 0;
right: auto;
bottom: auto;
}
img {
margin: 20px 27px;
max-width: 40px;
height: auto;
display: inline-block;
}
Working blind because I don't have that browser, but I suspect the issue will be the right:auto bottom:auto.
.fixed {
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 85px;
}
#logo {
width: 85px; height:85px;
position: absolute;
top: 0;
left: 0;
background-color:pink;
}
#logo a { display:block; width: 85px; height:85px; }
img { margin:15px 25px; }
Since the width is known, try replacing auto with the actual numbers.
Here is a Fiddle: https://jsfiddle.net/mnkx66zj/
You should also want to increase the clickable area on your link by making logo-link display block, and make it equal to parent size.
My FF DE44+ inspector says that the parent <a> is sized 0x24 and the <img> sized 240x164 (which are inline values). The parent has no z-index while the image has z-index: 1500.
It seems to me that the android browser has no width and height parent values it can reference while while the bottom: auto and right: auto forces it to do.
Further more, looking at the code of the 'live' site there is more to it than you are claiming in your question, because you give the values of the small image but the CSS of the big one (which also has left: auto, while the small one has no bottom, left, right at all).
You better take another good look at your code and revise the code in your question to reflect the code of the 'live' version, otherwise we will not be able to properly help you.
The task is to display block at center horizontally and vertically inside other block. I use this code
<div class="parent">
<div class="child"></div>
</div>
.parent {
background-color: #AFAFAF;
bottom: 0;
left: 0;
position: absolute;
right: 0;
top: 0;
width: 100%;
}
.child {
background-color: #FF0000;
bottom: 0;
height: 200px;
left: 0;
margin: auto;
position: fixed;
right: 0;
top: 0;
width: 200px;
}
and it works great on browsers and iOS devices, but this is the case in mobile android devices (not tablet): the inner div gets pinned to the top left corner, but when I inspect element using Adobe Edge Inspect I see that highlighted area for this inner div is displayed correctly. How can I fix this issue with centering on Android mobile? The size of inner block will change so the desigion should be universal.
I used to align div horizontally and verticaly the way you're doing but it seems like this technique is not really cross browser. Instead I took a look at the way Facebook was doing.
The demo on JsFiddle
The HTML :
<table>
<tr>
<td><div class="square">Some text</div></td>
</tr>
</table>
The CSS :
html, body {
height: 100%;
width: 100%;
}
table {
margin: 0px auto;
height: 100%;
}
.square {
width: 150px;
height: 150px;
background-color: red;
}
NOTE : I recently took a look and it seems like Facebook changed the way they do it. They are still using table display properties but no more the table, tr and td tag (div instead).
The easiest way with your markup is {left:50%;margin-left:-100px;}.
Then the same with height. {top:50%;margin-top:-100px;}
In summary:
.child {
background-color: #FF0000;
height: 200px;
left: 50%;
position: fixed;
top: 50%;
width: 200px;
margin: -100px 0 0 -100px;
}
I'm using the new panel widget from jQuery mobile. But i think it has a bug. I can't scroll inside the panel if its content is bigger then the actual "content".
To see what I mean, please check out this on an Android device and try to scroll inside the panel.
you can add two attributes in css to fix the scroll
height: 100%;
overflow-y: scroll;
<div data-role="panel" id="mypanel" style=" height: 100%; overflow-y: scroll;">
I hope this work in Android, Please try.
Problem is fixed with jquery-mobile 1.3 RC1.
Try to clear ui-panel-inner and add overflow: scroll to ui-panel
.ui-panel {
width: 17em;
min-height: 100%;
border-width: 0;
position: absolute !important;
overflow: scroll !important;
top: 0;
display: block;
padding: 0 !important;
margin: 0 !important;
}
.ui-panel-inner:after {
content: '.';
height: 0;
font-size: 0;
clear: both;
visibility: hidden;
display: block;
}
I am using phonegap to build android app. The problem right now I am facing is that when I scroll down in listview the tabs icon's border at the bottom becomes rough and deteriorated. Could someone help me out why this is happening and how to solve it? I am adding all the images using css.
Update
Here is my code
css
footer {
position:fixed;
width: 100%;
height: 60px;
bottom:0;
left:0;
padding: 0;
line-height: 100px;
z-index:2;
background: url(../../assets/img/tabbg.png) repeat-x;
}
footer ul {
list-style-type: none;
margin: 0; padding: 0;
text-align: center;
}
footer ul li {
display: block;
float: left;
width: 33%; line-height: 50px;
margin-right: 0.5%;
height: 58px;
text-align: center;
overflow: hidden;
}
footer ul li.one {
margin-left: 0.5%;
}
footer ul li a {
display: block;
text-decoration: none;
margin: 1px;
height: 100%; width: 100%;
}
footer ul li a.home {
background: url(../../assets/img/home3.png) center no-repeat;
}
footer ul li a.profile {
background: url(../../assets/img/camera2.png) center no-repeat;
}
footer ul li a.cam {
background: url(../../assets/img/profile2.png) center no-repeat;
}
Here is my html for tabs
<footer>
<ul>
<li class="one"></li>
<li></li>
<li></li>
</ul>
</footer>
Without seeing exactly the issue you're getting it's difficult to know if it's this however I'm having problems porting an App I built for the iPhone in PhoneGap to Android (still using PhoneGap).
I'm finding that using position Fixed causes issues and I've also had problems using width:100% (trying to cater for any-width phone) as opposed to a specific pixel value. Using overflow:hidden on whole-page divs also seems to be flaky.
I was getting display issues where elements would disappear and reappear. I'm still having problems using css rotate.
Using position:absolute and setting page-size div dimensions using window.innerWidth and innerHeight seems to cure things.
A bit non-specific I'm afraid but it may help..
I'd missed off the target-densityDpi field from the viewport metatag which appears to be crucial.
Leaving it out means the phone scales down everything by a factor of 1.5 I'm confused as to why unless background graphics dimensions cause this behaviour. I noticed window.innerWidth and window.innerHeight were reporting 320*533 instead of the actual 480x800 screen size.
While it looked fine I suspect the effort of scaling everything was taking too many resources - I was getting draw timeouts in LogCat - and I guess this caused the dropouts and flicker.
The scaling is also causing the rough edges. When static the phone anti-aisled the edges but when you drag an element its edges became pixelated.