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.
Related
Before anyone thinks this is a simple question or is a possible duplicate, please read the full post.
I'm developing an Android application and have implemented a WebView to act as part of the application. The WebView shows content from a website which is made with bootstrap and is mobile friendly. However, the CSS messes up here and there and as a result, the entire application looks odd and elements seem to be 'out of place'.
For example, I place a box and some text inside a container and place it specifically using CSS margins. Like below:
.testcontainer {
border: 1px solid red;
height: 50px
width: 100%;
}
.testcontainer .box {
height: 50px;
width: 50px;
background-color: blue;
display: inline-block;
vertical-align: top;
}
.testcontainer .text {
font-size: 16px;
display: inline-block;
vertical-align: top;
border: 1px solid blue;
}
<div class="testcontainer">
<div class="box"></div>
<div class="text">Testing</div>
</div>
Now all is good on a MacBook Safari and Opera browser and the text's border is pixel perfect and is aligned with the top of the blue box etc. However, on the WebView inside the application, the text is around 2px off and in some cases, 5px and so on. Why? I've tried to use em instead of px for font-size but the same issue occurs. What am I missing?
I am having problem with some CSS stuff. Have a look at : http://codepen.io/anon/pen/rxQQpv .
ul {
list-style: none;
}
ul li {
background: #333;
color: #fff;
width: 100px;
float: left;
text-align: center;
}
<ul>
<li>Test1</li>
<li>Test2</li>
</ul>
When I open the same in Android Google chrome, it looks like:
Screenshot from my Android Browser
Notice there is a little space between the 2 li blocks. How do I remove that ? And why is it there ?
Add a border of the same color as the background. It will work:
ul li{
border: 1px solid #333;
}
Or you can add the borders only on left and right if you like it better.
ul li{
border-left: 1px solid #333;
border-right: 1px solid #333;
}
I think you must set the li css rule margin:0 and padding:0 to solve your problem.
Try adding display: block to your li element:
ul li {
display: block;
}
Which Android device / version are you testing on? I wasn't able to reproduce the issue.
The best solution I found is to use another div which spans in the background of both of these divs with the same colour. My webapp had more than 20 consecutive such blocks. Hence adding border to them didnt work well. This solution works the best.
I have run into a very strange and incredibly annoying rendering bug in the Android WebView. I have tested this in a bunch of other browsers both on the computer and on my phone, and it does what its supposed to, but not in the WebView.
The blue box should be the same height as the header (30px) with text vertically centered in it, but instead, it is rendered as 25px. The only fix I've found, which doesn't make any sense, is to set the line-height of the blue box to 35px only on Android WebView, but this is a terrible hack.
css
body { margin: 0; }
#header {
height: 30px;
background-color: red;
position: absolute;
top: 0;
left: 0;
right: 0;
}
#button {
float: right;
line-height: 30px;
background-color: blue;
color: wheat;
vertical-align: middle;
}
html
<body>
<div id="header>
<div id="button"></div>
</div>
</body>
This is caused by the font boosting feature from webkit. There is actually a bug assigned to your problem: Bug 84186
Having the same problem as you, I actually created a javascript library that tries to fix the issue automatically. Be warned though, it's still in BETA status.
I'm developing a website that has custom lightboxes. When the user activates a lightbox, there is a gray translucent div that comes behind the active lightbox. I've noticed on tablets (ios and android) there is about a 10 pixel margin on the right side where a scrollbar would be. I've tried the following CSS and it hasn't removed it:
#media (max-width: 767px) {
#gray_out {
margin-left: -20px;
margin-right: -20px;
}
}
html, body {
margin:0;
padding:0;
}
div, p, a, li, td { -webkit-text-size-adjust:none; }
Here is what it looks like on a desktop:
Here is what it looks like on a tablet:
Notice the bright yellow sliver.
The code for the div that provides the graying:
z-index: 99999;
background-color: rgba(0, 0, 0, 0.74902);
left: 0px;
right: 0px;
margin: 0px;
width: 802px;
height: 2034px;
position: absolute;
top: -0.00006103515625px;
The top value is generated with jQuery. Any advice would be greatly appreciated.
I can't provide a direct link to the site, and for this situation jsFiddle can't help because of the nature of the issue. Bear with me.
It seems obvious in hindsight, maybe there is a more elegant solution but eventually this is what I came up with:
#media (max-width: 1000px) {
#gray_out {
margin-left: -20px ;
margin-right: -20px;
width: 105%;
}
#home_footer, #home_header, #home_row_1, #home_row_2, #home_row_3 {
margin-left: -15px;
margin-right: -15px;
width: 102%;
}
}
Removing padding/margins wouldn't work, and that 10px sliver was actually interfering with more than the gray div, so I just made everything that much wider on mobile devices. I've tested it on a couple different versions of the iPad and a handful of Android devices on browserstack and it seems to be working well enough.
I have my website and it looks great everywhere however I'm not a professional coder for Android. I do not know the extra quirks it has and I'm not sure hoe much I really need to know. Is there a way to single it out like in conditional comments for IE?
Here is my website and the banner and logo appear off to the left hand side of the screen. I have a Samsung Galaxy 3 and this is what my banner looks like on it.
Now I realize why this is happening, it's because they are both absolutely positioned and obviously the margin-left is making it go off screen. However I can't change that without destroying the layout for all the regular desktop browsers.
#site-title { background: url(img/heavensgate-logo.jpg) no-repeat; width: 229px;height: 297px; position: absolute; top: 0px; left: 50%; margin-left: -438px; z-index: 2; border: 0px; text-indent: -9999px; }
#banner { position: absolute; top: 165px; width:868px; left: 50%; margin-left: -448px; z-index: 1; padding: 15px; background-color:
#fff; border: 1px solid #b4b4b4; }
<h1 id="site-title"><span>Heavens Gate Winery</span></h1>
<div id="banner">
<img src="http://heavensgatewinery.ca/wp-content/uploads/banner8.jpg" style="position: absolute; visibility: hidden; top: 0px; left: 0px; border: 0px none;">
</div>
I'm confused as to how I should work with getting the banner and logo to work with Android. Any help is appreciated.
When you need to position elements with absolute positioning you should almost always do so inside a relative positioned element.
<div style="position:relative;"><div style="position:absolute;"></div></div>
Although this is not the problem described there, the Android browser has another issue regarding absolute positioning; absolutely positioned DIVs disappear. The solution Paweł Komarnicki found is -webkit-backface-visibility: hidden:
<div style="position: relative">
<div style="position: absolute; -webkit-backface-visibility: hidden">
</div>
</div>
My problem is in my Android (Samsung) that unless the other answers, left: in px gives the right position (absolute) but left: in % goes to position 0. Even e.g.
left: 10px;
left: 20%;
goes to position 0, calc() does not work either in left:, but works in width in a limited way.
So I think % does not work for left: in an Android. So I thought in the above problem left:50% was the problem, I am wondering it was solved with position relative / absolute. I did the same but no solution! No difference either when using -webkit-backface-visibility!
The solution: in stead of left: 17%, use left: calc(17%) and the other fixed px for left: are taken, but % does not work!!!
I did some testing that I suppose is relevant to this question. I wanted to center a SVG element inside a div.The code was not rendered correctly in Android 4.2.2. Now when I change translate to translate3d the problem is fixed. I've a made a piece of code that you can see both translate and translate3d side-by-side. My Android browser only renders the translate3d version correctly; possibly because of forced hardware acceleration. Note that I used a tiny Javascript code to copy the svg from one div to another. Here's the code snippet and the codepen:
Codepen: https://codepen.io/ehsabd/pen/yxOPOe
document.getElementById('test-translate3d').innerHTML = document.getElementById('test-translate').innerHTML;
#test-translate, #test-translate3d{
background: lightgray;
margin:20px;
float: left;
position:relative;
padding:100px;
}
#test-translate svg, #test-translate3d svg{
position:absolute;
width:100px;
left: 50%;
top: 50%;
}
#test-translate svg{
-webkit-transform: translate(-50%,-50%);
}
#test-translate3d svg{
-webkit-transform: translate3d(-50%,-50%,0);
}
<!--I've tested this on Android 4.2.2 native browser and I've seen that the first heart from left (which uses translate is not centered but the second heart (translate3d) is appropriately centered)-->
<div id="test-translate">
<svg
id="svg19871"
sodipodi:docname="remigho_like(paths).svg"
viewBox="0 0 604.96 556.17"
version="1.1"
inkscape:version="0.48.5 r10040"
>
<g
id="layer1"
inkscape:label="Calque 1"
inkscape:groupmode="layer"
transform="translate(-69.568 -427.74)"
>
<path
id="path18741"
sodipodi:nodetypes="csscssccc"
style="color:#000000;stroke:#000000;stroke-width:53.15;fill:none"
inkscape:connector-curvature="0"
d="m586.75 734.03c37.196-28.491 61.2-73.36 61.2-123.83 0-86.088-69.799-155.89-155.89-155.89-48.272 0-91.426 21.952-120.02 56.407-28.592-34.455-71.746-56.407-120.02-56.407-86.088 0-155.89 69.799-155.89 155.89 0 50.469 24.003 95.338 61.2 123.83l214.72 223.3z"
/>
</g>
</svg>
</div>
<div id="test-translate3d"></div>