I have this layout when running it on an iPhone 6, which is EXACTLY what i want:
However, here it is when running on the iPhone 4S (or on the iPad):
I really can't wrap my head around this. As you can see, the above picture has the text leaving the area, and the image being "shrunken". It is as if, the first image has the image resizing itself, and in the latter the text is filling up the blank space. How do i fix this?
EDIT
Here are the constraints for the left-side image, and the right-side table:
Left image:
Right table:
And here they are selected in IB:
am not sure what you are doing with other elements but for the table and image i can suggest you those constraints. first clear all constraints of these two element and then try those.
for table in right side -
top to superview
bottom to superview
width - fixed
trailing to superview
for image on left
top to superview
bottom to superview
leading to superview
trailing to superview
put constraint values are according to your design. this will keep the right side table fixed width and resize the image to fill the rest of gap. i think this will solve your problem.
So, it's a little hard without being able to try out the layout myself, but here's what I think you need to do:
On your left image, remove the "Trailing Space To Superview" constraint.
On your right tableview, add a Width constraint, constraining the table to its current width.
This means the text in the table will stay in the same location, and the left image will grow or shrink depending on the space available.
Related
I am trying to create three containers (UI Views) as in the following example:
As you can see, in my case the TopContainer (the orange one) and the BottomContainer (the red one) have different dimensions. Also, I have a MiddleContainer (the white one) which is NOT located in the middle of the screen or in the center. In fact, the BottomContainer is a bit larger than the TopContainer.
Question: how can I keep them constrained no matter which phone my user has?
I tried to constraint the three components to the margins and between each others but it's not enough because, in that case, XCode argues that for each component the height and the width are ambiguous. Therefore I tried to maintain also the Aspect Ratio for all the three components and it seems to work, but with iPhone X (like iPhone XS) I get a ugly bottom line, so the bottomContainer doesn't fill the whole screen.
I know that there should be a "Bottom Space to" to set up for my BottomContainer in order to solve this issue but apparently I have it not, as you can see on the right side of the following screenshot:
Do you have an idea of what I am doing wrong? Do you have an alternative way to proceed?
I would solve it with a UIStackView with two UIView (orange and red). The UIStackView is set to distribute Fill Proportionally.
The orange view is the size of your orange view plus the size of the white view.
Then I'd add the white view as a child to the orange view and constrain it to the bottom of that view and with a fixed height.
To get rid of the bottom gap, set the bottom constraint to Superview instead of Safe Area.
See the screenshot for details:
As per your comment, I think this is what you can do!
Align the "middleComponent" to the center vertically, to its superview.
Set the height to it, as you want to have a fixes height there.
Then pin the "topComponent"'s bottom to the top of "middleComponent".
Pin the top of your "topComponent" to the top of the superview.
Pin the top of your "bottomComponent" to the bottom of the "middleComponent"
Pin the bottom of your "bottomComponent" to the bottom of your superview.
All these views will have have their left and right pinned to the superview's left and right.
Hope this helps
See this image:
The tableview does not fill up the screen, while I seated equal widths and heights to superview. I also tried to set the constrains to all zero's on leading trailing top and bottom. The black image you see has a trailing space of 5 to the content view, but the image is not on the far right side on iPad or iPhone 7.
How can I make the TableView as big as the screen? Thanks.
Remove all constraints of your UITableView
Pin your UITableView to top, left, right and bottom with 0
Make sure not to use constraints to margings
Alternatively use the size inspectors Autoresizing.
Edit: PLEASE LEAVE A COMMENT IF YOU'RE GOING TO DISLIKE SO I CAN IMPROVE MY QUESTION
I'm trying to recreate a custom table view cell in my xib file as shown below. The company's square image is on the left. The company's name and company's booth (2 UI Labels) are to the right of the company's image. The star button is to the right of the text and is a square image. I guesstimated that the company's image and favorites button should be about 8px from the top and edge.
I tried to create 4 constraints for the top, bottom, left, and right of every element (image, 2 UI labels, and button). I also added 1:1 aspect ratio constraint to the image and button to make sure the image would be square. Then I aligned the left edge of the 2 UI labels. I vertically centered the image and the button. However, it came out with no star button and the location and title switched. How do I create this design using constraints?
Their is no difficulty with that.
First if we talk about your left UIImageView, Set following constraints,
Leading constraint
Fixed Height
Fixed Width
Centre Vertically
After that the UIImageView on left, set following constraints,
Trailing space from superview
Fixed Height
Fixed Width
Centre Vertically
Now for both Labels, put them in a UIView and give that UIView following constraints,
Leading space from left image view.
trailing space from right image view.
top space from superview
bottom space from superview
Now for upper UILabel, Set following constraints,
Leading space
Trailing space
top space
Now for lower UILabel, Set following constraints,
Leading space
Trailing space
top space from upper UILabel
bottom space
After all this, i think that this will work for you.
You can use the constraints in the image below. It will work for all screen size and for any height of row.
Suppose that I have the following view controller and this is how I want to see it on all iPhone:
If I run it on iPhone 6 it has the following look:
Here you can notice that UITableView not fit the whole screen and UIImageView doesn't placed at the bottom of the screen.
How can I achieve the required behavior via constraints in XCode 6? I thought that I need the following constraints:
Leading space and top space to container margin for UITableView
Bottom space and trailing space to container margin for UIImageView
Vertical Spacing between UITableView and UIImageView
But it doesn't work as expected even after auto-resolve constraints issues:
Thanks in advance.
Ok, a few things here:
Each view needs enough constraints to define it's x and y position, and it's width and height unambiguously. To start with, go back to Interface builder and delete all of your constraints and lay out the view as you would like it to look. You want to have control over every constraint added, don't let IB automatically resolve the issues, as in all likely hood it won't do what you want.
Do you have an image that is the size you want it to be on screen, once you've factored in #2x, #3x etc? If so, then your job will be easier, as the width and height of the image view can be defined by the width and height of the image (ie the image view's intrinsic content size).
In order to use Autolayout effectively, you need to think about your view holistically, and think about how you want your views to behave when the screen size changes, be clear in your head about the behaviour.
To achieve the layout you want, I would do the following:
Constrain the tableview's leading, top and trailing edges to the superview, with a constant value of 0. This means it can get wider and thinner with the device, it will stretch horizontally, but always stick to the top. This has defined the tableview's x and y position, as well as it's width (height still to go, but keep reading...)
Constrain the image view to match the horizontal centre of it's superview (x position defined) and constrain it's bottom edge to the superviews bottom edge (y position defined). If've you've got the right sized asset, then that will take care of the width and height too. If not, you could go ahead give it explicit width and height constraints.
Now we can constrain the tableview's bottom edge to the top of the image view, with a constant of 0 (ie touching). Note we haven't give the table view an explicit height constraint, so as the device screen grows vertically, the table view will stretch vertically.
Autolayout is hard at first. I'd recommended lots of reading to get over the initial hump, really get to know what a constraint is doing, it's limitations, and the way in which the system parses constraints to translate them into frames. This book is really good, and really helped me learn:
http://www.amazon.co.uk/Auto-Layout-Demystified-Mobile-Programming/dp/0321967194
Best of luck
First make sure you have selected the correct size class. The 'Compact Width | Regular Height' size class must be selected in the Interface Builder. Now add the Trailing space,Leading Space, Top space and Bottom space constraints to the table view. For the image view set the view mode to Aspect fit and add the constraints : Align Center Y ,Top space,Bottom space, Leading space, Trailing space and Aspect Ratio .
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.