Why does the items get misplaced in constraint layout, is constraint layout better than relative layout (Newbie Here) Which one is recommended
" but when I create an Activity in a Constraint Layout, the items get
misplaced during runtime why is that so?"
This happens because you must not be adding all the required constraints for your views.
For example: If your view has only it's top aligned to another view, on rendering, it may move anywhere horizontally since it's left or right isn't aligned.
I suggest that you look into the official documentation and examples. You could also search for YouTube tutorials on ConstraintLayout.
Constraint layout is better than the relative layout as it provides you the both feature of relative layout and the linearlayout. you can provide the weight to views in coordinatorlayout which was absent in the relative Layout to do so earlier we need to add another layer of a linearlayout
Related
This is my code:
<table>...Some content...</table>
<table>...Another content...</table>
I want to put the second table on top of the first table. This is to be used as an email template (in some clients position and margin are not available).
Those are the only two options available (outside of transform, which definitely won't work if position isn't available) that will allow one element to invade another element's space. If you can't use position or margin, then you're out of luck, and you need to re-evaluate what you are trying to achieve and why. Any chance you could do this with images?
There are always ways...not always elegant, but when you have limited options, 'works' is often all you really need. IMO, creativity is as much about solving a problem with limited options as it is thinking 'outside the box'.
Most email clients allow you to set 'height', so simply wrap the first table (the background) in a div and give that div height:0px;. the table will overflow the div, but the next element won't respect it's space because it has 0 height, and will effectively be layered in front.
http://jsfiddle.net/L0d3tnzu/
If you want the size of the tables to match exactly, you'll probably have to explicitly set heights and widths, but the fiddle above illustrates the basic concept. Hope this helps!
EDIT:
Based on the additional info in the comment (the second table should only partly overlap the first table) here is an updated fiddle: https://jsfiddle.net/acq3ob6y/1/
EDIT #2:
Dang. Outlook switching to the Word/Office rendering engine for HTML/CSS might be the only way possible to get WORSE than the IE version. Sigh. (Thanks to #Gortonington for the comment/clarification, though!)
Ok, then, the idea of a background image is only a problem for retina displays (if you want them to be all crisp and beautiful and retina-ie), and retina devices are going to be handling CSS in a more modern way (hopefully!), so how about this as a solution: Media Query targeting device resolution loads CSS with the double-size img and uses css background-size to constrain it: http://jsfiddle.net/tcyjo7ok
Third try is a charm? At least the list of options is growing...
The only way to overlay two elements across email clients is through use of background images. Even this can be broken in some clients and requires a lot of conditional and reiterate code (backgrounds.cm is good resource for email bg images).
This is the only option that will display in MOST clients. Even this is still very restricted and not very agile to use (but that is true in ALL email coding). Most other techniques will only work for a couple clients and break completely in all others.
I create a table in jquery-mobile and the table present different from what I want it to be when the device's/screen's width is too small.
This is what I expect (when I open in web preview)
This is what it be in mobile simulator
I want each row represent in the same line
[Position] [Level] [DeleteBtn]
Not the seperate line
[Position]
[Level]
[DeleteBtn]
Thank you for suggestions or solutions.
Ps. I also want the Damaged Position(s): label to align the same horizontal position of the plus button. If you know the solution, it will be welcome. ;)
I think it's the "reflow" data-mode.
Check it out here.
If you want to keep it, you should make sure there is enough space for all columns (otherwise, it will break into a stacked presentation)
A similar question that might help: here.
Also, according to jquery, reflow is the default, so removing it shouldn't help
I have to implement this grid of divs. It won't change often, but it may at some point (meaning a box may be removed, and another resized). Each black box will eventually contain an image or a word, but that's not important.
How do I pull this off? Is there a more elegant way than by absolutely positioning every single box and manually entering every X/Y/width/height?
A grid based approach would be my recommendation.
Something like: http://960.gs/
EDIT (some more options)
http://developer.yahoo.com/yui/grids/
http://cssgrid.net/
http://weknowwhatyouredoing.com/
I'm trying to make a table like this one where I have a profile image to the left, a bold title/name and text underneath the bold title/name, and date/time stamp underneath that... basically the same views as on that website (http://weknowwhatyouredoing.com/) or better (or twitter tweets).
Anybody know of any tutorials on how accomplish this? I'm currently using table with multiple columns but it seems that when one cell is big, all the cells in that row become the same height and i don't like that. In android this is called a list view but i'm not sure what it is in the html/css world, any help please? Thanks in advance
You could make multiple tables floating next to each other. The elements on the website you show aren't aligned as fa as I can tell.
A tutorial on rowspan and colspan can be found here.
If you make the image span 3 rows, you can put the bold text, content and date stamp each into one row. With valign you can vertically position elements within a row if the row becomes higher than the content. This will probably happen if the 3 rows together are higher than the one spanning row containing the image.
As a quick fix for your issue with the equal row heights, you could use the same layout method as they use on weknowwhatyouredoing.com.
Wrap each column in a separate <div>, and then place your <table> inside.
4 containers, 4 tables with independent row heights.
You shall give a look at the Twitter Bootstrap CSS library Twitter Bootstrap
It's pure HTML5/CSS using only divs.
for improve your knowleges in HTML, you can see W3C (Word Wibe Web Consortium) specs. For sample, if you see this page, W3C explain all structure, attributes, for Table element.
You can find lot of tutorial in google ( search "tutorial create Table HTML" ).
Also, you can help you to understand website structure with browser plugins that display hover element in specific website. ( firebug for Firefox and Chrome, Dragonfly for Opera browser...)
Why not use multiple list elements? Tables definitely don't give you flexibility for responsive designs. Making multiple columns of list elements can be rearranged as needed with limited restrictions
How do I overlay widgets in Qt?
I want to create some widgets and place them out-of-layout, but rather tweak their size and position when some other widget's geometry is changed.
Something like the buttons on the screenshot:
You just need to create your QPushButton (or any QWidget), indicate its parent QWidget and then display it.
Don't add it to the parent layout else you will not be able to move it as you want.
Don't forget to indicate its parent else it will be displayed as independant QWidget.
In these conditions your QPushButton will be considered as child of the QWidget but not member of the parent's layout. So it will be a "floating" child and you must manage it's behaviour when resizing parent's QWidget.
If you want a unified behaviour for all overlay buttons, you should subclass QLayout and redefine members bahaviour.
If they're child of a widget without a layout, you should be able to move them around as you please, I think.
I needed a widget like this for a project I'm working on, so I took Patrice advice and wrote this code (Python) PyQt4 Widget Overlay