I would like to have a small table centered horizontally in my document with numbering at the right edge of the page, centered vertically. This is easy to do for images or formulas as shown here:
But with tables I can't figure out how to get them to behave nicely like a character. I also tried putting the table in a frame which works except that the frame cuts off some of the table borders and leaves space below the table. Any ideas?
Using a frame is the right way IMHO. To avoid cutting of frame content, you may set the Spacing to contents values on the Border tab of the frame definition accordingly. On the Wrap tab, you can edit the spacing below the frame.
Related
I've got a problem with self-sizing and animatable table view cells, with the animation part only.
The issue is that when the cell expands, 2 of the labels are overlapped as the other items expand. If you look at the gif below, the top label "370 Base Axle Ratio" becomes overlapped by the middle elements. Those middle elements slide down as a group, which is also undesirable, and if you look closely, the "0" under the words in the middle "Original Production" is also overlapped and it expands or is revealed incorrectly.
The top bold label "370 Base Axle", is set to be 0 lines of text so it can expand to fit multiple lines. The center group of labels is anchored to the bottom of that label. The bottom long text label is anchored to the bottom of the middle "0" label.
If I anchor the middle group of items to the top of the view at a fixed amount, then the expansion works without the overlap effect, but of course this breaks the dynamic nature of having multiple lines of text in that top label.
This layout is built with auto-layout, but is not using stack views (and is not my preferred solution at this time).
No specific code is used to set any layout sizes, only using this in the tableViewController after I add or remove the text in the bottom label:
tableView.beginUpdates()
tableView.endUpdates()
How would I fix this so the ONLY element that would expand is the bottom most label with the long amount of text, but still have a variable label height at the top?
TL;DR: Labels with multiple lines of text breaks animation when other multi-line labels are animated in a "show more" style of expanding table cell.
You can almost fix your issues with very few changes.
Two important things:
For all labels, set both Hugging and Compression Resistance to 1000 (Required)
Make sure you have a complete vertical constraint chain.
Couple drawbacks to your method of setting / clearing the text of the label though. The expand animation will work well, but the collapse animation will look as it does in your original gif --- the text disappears instead of being covered. Also, you have extra spacing at the bottom.
To get around that, you can set a constraint from the bottom of the "description" label - as you likely have it now - to the bottom of the content view... this will be the "expanded" constraint, AND add another constraint from the bottom of the "center 0" label to the bottom of the content view... this will be the "collapsed" constraint.
Those constraints will conflict at first... so change the Priority of the one of those constraints (doesn't matter which) to 750 (Default High) and the other constraint to 250 (Default Low).
When your app is running, you would swap the priorities based on whether you want the cell expanded or collapsed.
I put together a sample app using your layout - You can download it here: https://github.com/DonMag/Maverick
I use background colors to make it easy to see the frames. There is a line in cellForRowAt that can be un-commented to clear the colors.
The result using your set / clear text approach:
and using the Constraints method:
I am trying to create an Android-esque Snackbar. All the behaviour is correct but I am left with a layout issue. I have actually broken this out into a test app to simplify things a bit.
The bar is pinned to the bottom of the view and contains an Icon (UIImageView) along with some text (UILabel). This text can be up to 2 lines max.
For example, it should be able to exand out like this:-
However to further complicate things, i need it so that the icon and text are centred within the red bar and then spread out from the centre until such point that it needs to wrap. Note that there is a padding to the start of the icon and end of the text to prevent it touching the sides. An example of centred content would be..
I haven't been able to get the correct layout. I think the issue has been trying to centre the two items whilst simultaneously conforming to a width that doesn't exceed the edge bounds, causing a constraint conflict. I have also tried embedding the icon and label in a horizontal stack view but couldn't seem to find the correct fill option whilst centring everything.
I have even tried using NSAttributed string and adding the image to the text itself but when the text wrapped, the icon was being resized and/or misplaced.
As you can see, i have been doing this in Storyboard but i am more than happy to do this programmatically if it serves this purpose better.
Created this Demo for reference , it's a simple task of making a nested view inside the red view with a centerX constraint of priority 1000 and a leading constraint with 999 priority
Now you have this effect
I'm developing an ios application which has a table view. when there is a long value in table cell, table column width size should be increase. I've develop a custom UI for this requirement as following images.
I have change the content size using following code, but it isn't increase
the table body size. you can see it in following image.
self.resultTableView.contentSize.width = self.cellWidth!
You can see the first image its appear as it is and when there is more indexes (columns) and user try to scroll horizontally towards right(as shown in second image), table view will not expand more than the viewport size.
How can I do table view fit to the scroll size?
and finally everything become invisible.
feel free to ask anything if you dont clear enough the quection.
I guess what you have to do is dynamically calculate the desired width and then set the tableView width (for example with a tableView.widtAnchor) to exactly this width.
For a table that scrolls into both dimensions, this could also be helpful:
http://www.brightec.co.uk/ideas/uicollectionview-using-horizontal-and-vertical-scrolling-sticky-rows-and-columns
I am hiding/showing the header dynamically and just noticed, when the header is hidden, that the viewport is shifted to the top by around 40 pixels which is obvious, But the weird behaviour is just now a 40 pixels of white space appears at the bottom of the content, so I need to adjust the content height or update the layout in a sort to tell the content to update it's height.
For this, I already tried several way but they weren't efficient enough to fix the layout issue.
PS: I am not using footer on the page div.
Method 1:
$('.ui-header').hide().animate();
$.mobile.resetActivePageHeight();
Method 2:
$('.ui-header').hide().animate();
$('[data-role=content]').trigger('refresh').trigger('updatelayout');
Also, I have tried to calculate the new page height after the header is hidden and assign the new height to the content $('.ui-content').height(newContentHeight);
I have pretty straightforward requirements where two labels must be centered horizontally. So, I have selected them and chose Editor->align->center horizontally. Then added top space to container constraint to both of them. I also need the labels to shrink/grow regarding content size. However, IB shows errors and several warnings. I could make the labels shrink/grow just by adding pin between them (horizontal space) but they will not be centered in that case. Here are the screenshots:
here are the errors and warnings:
UPDATE theraven gave an interesting suggestion to use dummy view for centering it horizontally and pinning two labels to it. I have removed all existing constraints, added this dummy view and center X + center Y constraints to it. Then pined two labels to it (added horizontal space constraints). However, I still get a bunch of errors and warnings:
UPDATE2 Just updating the question, but still no valid answer found. #Theraven workaround works for iPhone4, iPhone4S, iPhone5 and iPhone5S, however it's not real centering but rather a workaround. Therefore for iPhone6 and iPhone6 Plus it doesn't work as leading and trailing spaces will be fixed and won't automatically resize for larger width.
What you could do is add both labels to another view, like a container view. Then you need to center this one horizontally and add the necessary constraints.
To add the containing UIView, you can select both labels, go to Editor -> Embed In -> View.
Then you would need to add constraints to make the containing view fit the two labels. So something like this:
First Label (left one):
Leading Space to Superview
Top and bottom Space to Superview
Horizontal spacing to the next Label
Second Label:
Trailing space to superview
Top and Bottom to superview (or align top with the first one)
Then the containing view should resize as to fit both labels. Then all you need to do is add the top offset constraint for this container view and a horizontal alignment it in the parent view.
This way, the containing view will grow as much as it needs to fit both labels and the space between them and will always be centered in the parent view.
I took a screenshot of my test constraints in case it helps you more.
Hope this was what you were looking for.
To solve this use a blank UIView in between your two labels and center it horizontally. Then pin the two labels either side of the centered blank view. It is common convention to use spacer views like this in auto-layout.
I really don't like the idea of adding another view just for sake of estethic.
Another alternative is to horizontally-center the left view, and horizzontally space the right view of an amout X with the left one.
Then to give the horizontally-align contraint of the first view a negative value equal to the first view width plus half the views distance. Or use multipliers as said in a previous comment.
But this only works with fixed width views i guess.
Use centered UIStackView as a container for two labels with a spacing required.
I didn't really understand what you wish to do.
The error you get (in the first screen shot) is that you are missing constraint for the x position of the labels.
For UILabel you must have constraint both for y and for x position regarding to the container view, when you selected them both and chose Editor->align->center horizontally, you just say that label1.center.x = label2.center.x.
You still need to say where they will be in the container view, you added the top space to container, so you do have the y position, but you didn't say where the x position should be.
You said
I have pretty straightforward requirements where two labels must be centered horizontally
But where they should be in respect to their container?
thanks
Using spacer views is the best possible solution I could figure out, even though it looks ugly for the developer. The user wouldn't even know what's going on behind the scenes and once you have the spacer UIView, you can always reuse it.