I have a Controller with 4UILabels that are constant height throught all the iPhones, below the lastUILabel there is aUIView with a page controller(with aTableView inside that page controller).
What I want is that theUIView take all the height that he cant :
example: Screen of 600 height
4UILABELS = 200 height
TableView = it should get 400 height
Screen of 800 height
4UILABELS = 200 height
TableView = it should get 600 height
I need 1 constraint more to set the height of the view,What I have defined is :
EqualWidth constraints to superView
LeadingSpace to SuperView
Top Space to super VIew
The following constraints should align everything for you so that the UILabels stack vertically, each have height 50, and stretch to the edges. The UIView will take up the remaining space regardless of the screen size.
All UILabels
Pin leading edge to superview
Pin trailing edge to superview
Add height constraint set to 50.0
UILabel 1:
Pin top edge to superview top
UILabel 2:
Pin top edge to UILabel 1 bottom
UILabel 3:
Pin top edge to UILabel 2 bottom
UILabel 4:
Pin top edge to UILabel 3 bottom
UIView
Pin leading edge to superview
Pin trailing edge to superview
Pin top edge to UILabel 4 bottom
Pin bottom edge to superview
UITableView
Pin leading, trailing, top and bottom to its container view so it fills the area.
I assume that you are creating this UIViewController in a Storyboard.
You should be able to put all the labels in a container view which you give the constant height of 200 points, as you specified. Make a vertical constraint from "Top layout Guide" to said container view, maybe with the value 0. Drag an UITableView and place it below the container view. Dont give it any constraint regarding height. Make a vertical spacing between the (bottom of) container view and the (top of the) UITableView with value 0 and a vertical spacing between the (bottom of the) UITableView and the Bottom Layout Guide with value 0.
So it will be (V:0 means vertical spacing, constant 0):
Top Layout Guide
V:0
Container View - Height: 200
V:0
TableView (dynamic height)
V:0
Bottom Layout Guide
This should work.
(And then of course you need to create constraints regarding width and also internal constraints for each UILabel inside the container view. Let me know if you need help with that.)
Related
How can I get a UILabel with a variable number of lines to push down the content in a UIScrollView?
I currently have a UIScrollView pinned to the superview, a container inside pinned to scrollview and equal height/width to main view, and this blue UIView (height 50), 2 UILabels and a UIImageView (height 200) inside the container.
In landscape I want the UIImageView (i.e. black box of height 200) to not be pinned to the bottom of the superview, but be offscreen and the scrollview content size to have been adjusted.
In portrait I want the labels to size to fit and the black box to respect the top constraint to the bottom label:
Tried more stuff and the following worked:
set both labels' vertical resistance to 1000
delete the "equal height" constraint on the container
So the solution to seems to be:
add a scrollview and pin all edges to vc's view
add container to scrollview, pin all edges to scrollview, equal width to vc's view (height varies based on bottom pinning to content), add all content to container
This is my setup:
I do not know what I am doing wrong. The image view is bigger than the size of the view and of the scroll view. The constrains are set al followed:
Scroll view: equal heights to View * 0,5, equal width to View, center Y and X to View.
View (inside Scroll view): pinned all zero's inside Scroll view, equal heights and width. I also tried instead of equal heights and widths to center X and Y inside Scroll view, but it won't scroll.
How can I let the Scroll view scroll? Thank you.
Add a leading, trailing and top constraint and equal height of UIScrollView to superview with 0.5 multiplier. Now to your contentView (the UIScrollView subview), add a leading, trailing , top and bottom constraint. Also add equal height and width to UIScrollView. Set the height to a priority of 250. Add constraints for UIImageView inside this contentView.
Since the contentView will have a fixed height of low priority equal to the UIScrollView height. This fixed height constraint will break once the UIImageView total height(based on the constraints you add) will get larger than the UIScrollView height and the content will become scrollable. So at the very least you will always have a view half the screen size and become scrollable once the content becomes too large vertically.
You need to give contentSize to scrollview.
ScrollView.contentSize = CGSize(width: 1000, height: 500)
Which constrains have you given to imageview?
set constraint of imageview:
Trailing ,leading,top,bottom - 0 and also give height constraint.
I have a view hierarchy on iOS arranged like this:
UIViewController
- UIView
- UIButton
- UIButton
- UIScrollView
- UIStackView
- UILabel
- UIDatePicker
- UILabel
- UIDatePicker
The scroll view is pinned to 20 from leading and trailing space on the superview, 0 from the bottom of one of the buttons, and 0 to the bottom layout guide.
The stack view has 0 leading, trailing, top, and bottom space to the superview (the scroll view).
I like how this looks in vertical orientation:
But in horizontal orientation, I think the long lines extending beyond the main content of the UIDatePicker are kinda ugly:
I've tried many permutations of constraints (max width + center X on the UIDatePickers, increasing various content hugging priorities, no width constraints on the UIScrollView and center X on it), but all have resulted in ambiguous layouts or conflicting constraints. How can I do what I'm aiming for here?
EDIT: With the constraints as suggested below (ScrollView pinned to container, StackView pinned with 0 Trailing, Leading, Bottom, and Top space to the ScrollView, and a width equal constraint on the date pickers) the StackView refuses to expand its width and stays pinned to the left of its parent.
This happens even though there are leading and trailing constraints set to 0 on the StackView.
Change the Alignment of UIStackView to Center.
Add a width constraint to DatePicker = 315
Now the stackview will keep the DatePicker to Center with width 315 in both potraite and landscape
I'm having this weird issue with my constraints which causes the UILabel (Caption Label) to be a fixed height instead of dynamically changing height depending on the text.
I have a view (Vertical View) with a top constraint on the label above it. The Vertical View contains a view (called View) which I'm using as a divider that is centered from top to bottom with a width of 1. On the left of the divider is a UIImageView (Left Image View) with constraints leading, top, bottom equal to superview and trailing equal to View. I want to do the exact same thing to the UIImageView on the right of the divider but here is where my issue comes up.
If I use a fixed height as seen below, the UILabel above Vertical View dynamically changes its height like I want but this is obviously not how I want the UIImageView on the right to appear. I want it to be similar to the UIImageView on the left of the divider with equal height and width.
If I set the top constraint of the UIImageView on the right to the superview Vertical View, similar to the UIImageView on the left of the divider, the UILabel above Vertical View doesn't dynamically change height anymore. The UILabel now has a fixed height which I believe comes from the fact that UILabel has a height of >= 14.
How can I properly set the constraints so that I can have both UIImageViews next to each other with equal and height contained within the Vertical View and still have the UILabel above Vertical View dynamically change height depending on the text that I set the UILabel to?
On the RightImageView, you first need to get rid of the "Height = 50" constraint. This is what is causing it to be small.
Next, if that alone doesn't fix you, can you try setting the following constraints instead of using the superview for the constrains (instead make it mirror the LeftImageView):
Left: Leading spacing to divider view
Top: Align top edges to LeftImageView
Right: Horizontal space to superview (your vertical container view)
Bottom: Align bottom edges to LeftImageView
This should allow the views to remain the same height and width (assuming your distances between left/right edge of vertical container view are the same, and the distances between divider are the same).
Now, ensure the size constraint for width of the divider is set to 1 and not >= 1. Also, ensure the vertical container view has a Compression lower than the Label.
One final note--your screenshot shows the result that IB is showing you (with the dotted yellow box) on the LeftImageView. One you update your constraints correctly, this yellow box should go away.
Regarding the UILabel - if you want this to grow dynamically, you need to do the following:
myUILabel.numberOfLines = 0;
myUILabel.text = #"Enter large amount of text here";
[myUILabel sizeToFit];
I'm trying to make a translucent black rectangle with some text in it, to convey some info to users. It seems to work, but when the phone's text size is large then the label's contents are cut off -- the view won't expand its dimensions.
To create this I added a UIView with a black background and rounded corners, made it somewhat transparent, and placed a UILabel inside it. Constraints on the view should allow it to grow wider when the phone is rotated, and constraints on the label keep its edges pinned to the view.
Here are the view's constraints:
Align Center X to: Superview
Align Center Y to: Superview
Trailing Space to: Superview >= 40
Leading Space to: Superview >= 40
Width >= 200
Width <= 300
Height >= 100
Height <= 150
And the label's constraints:
Trailing Space to: Superview Equals:Default
Leading Space to: Superview Equals:Default
Bottom Space to: Superview Equals:Default
Top Space to: Superview Equals:Default
When run on an iPhone 5, the view's size is 200 x 102 for some reason and the text is truncated, even though its constraints allow it to go up to 300 x 150. What am I doing wrong?
Just set UILabel Top/Bottom/Lidding/Trailing constraints to zero because it has intrinsic content size. It means label will wish to become that wide to contain its string value all visible. Look at this article
Create constraint programmatically
_constraint=[NSLayoutConstraint constraintWith...];
[self.view addConstraint:_constraint];
//...
_constraint.constant=40;
Use outlet if all the constraints are defined in IB. Just connect it to your constraint.
#property (nonatomic,weak) IBOutlet NSLayoutConstraint *constraint;