I have 2 UILabels above 2 UITextFields.
I would like the first UITextField to expand when the screen size allows it.
I set vertical spacings between each elements, and fixed height constraint for the UITextField at the bottom and a >= height constraint for the first one.
Below is a screenshot with what it looks like with the retina 3.5 form factor (<= iPhone 4).
But, it just doesn't work. Below is a screenshot of the storyboard with the retina 4 form factor (>= iPhone 5). The first UITextField overlaps the second one.
What constraints should I set ?
If i had it in front of me I'd play around with the compression resistance properties, which would be more elegant than fixed heights... however....a crude way of doing it that would work is:
You could have fixed height labels.
Fixed height bottom text view.
Pin the top text view to the bottom of the label. Pin the top label to the top of view.
Pin the bottom text view to the bottom of the view, pin it's label above it.
Pin the bottom of the top text view to the label below it.
The orange (-78) is Xcode's way of telling you you have a conflict between the frames of your layout and the autolayout constraints. Try looking at the storyboard warnings and fix the frame or fix the layout constraint.
Related
I'm working to make a chat bubble like in iMessage. I have to use UITextView to get advantage of DataDetectors to detect urls, phone numbers and addresses automatically. My view hierarchy is like;
-UITableViewCell
-ContentView
-ChatBubbleContainerView
-UITextView
ChatBubbleContainerView have constraints of
10-pt left, right, top and bottom margins --> ContainerView
UITextView have constraints of
10-pt of left, right, top and bottom margins --> ChatBubbleContainerView
I want to achieve a behaviour to make the text view automatically expand its height and width according to its content inside e.g. text. But the text view has no intrinsic content size.
These are what i have tried and got wrong results
Overriding the intrinsicContentSize property of text view but it's
not working too.
Giving a width constraint to the ChatBubbleContainerView and changing it to result of sizeThatFits() method
Giving a width constraint to the ChatBubbleContainerView and changing it to result of text.boundingRect method
These are the results i've got
It's not working properly and the cell is not laying out as expected as i scroll the table view
It's working but the initial width of cell in the nib is 375-pt which is good for 4.7 inch devices but when i switch to devices like iPhone SE which has 4 inches at the initial table view load or cell insertion, the cell's width is calculating according to 375-pt not 320-pt. After scrolling cell, the layout is laying out as expected.
Same with 2.
When i try same layout with UILabel it's working as expected. As you may know UILabel has intrinsic content size.
Thanks
TextView Contraints are good you need to made some changes on ChatBubbleContainerView constraints.
ChatBubbleContainerView constraint:
top, leading, bottom -> 10 pts
MaxWidth(GreaterThanOrEqual) to contentView, for instance 0.85 or you can set TrailingConstraint with maxConstant(GreaterThanOrEqual to contentView.
you need to set the maxWidth then only ChatBubbleContainerView will be responsive.
I have a view with two button. I have added auto-layout. But bottom space is more in iPhone 8 plus than iPhone 4s.I want to keep the spacing ratio of top and bottom same in all iPhone. How to fix it ?
Updated
For Specific Ratio : To my understood, We can give Multiplier for Centre Vertically Constraints. Here ratio of top and bottom space will be same in all iPhone series. I gave Multiplier as 1.4
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I know having several answers there. But, no one used UIStackView to add two simple buttons.
Drag two UIButton, select that two UIButtons, click Embed in Stack icon from here.
Stackview Properties
Give following things for UIStackView,
Set Axis as Horizontal, Distribution as Fill Equally, Spacing as 10 in Attributes Inspector
Stackview Constraints 1
Give constraints for that UIStackView, Check/Uncheck Margins, Left and Right = 0, Height as 30.
Stackview Constraints 2
Still, some constraints are not satisfied. Press Control and hold it, Click StackView and Drag to SuperView, you will get black pop up. Choose Center Vertically in container.
Stackview Constraints Customization
If you want to change height of UIButton or Bottom Space, click UIStackView and in Size Inspector, you can change height or move up/down.
If you are using Auto layout then set constraint like this way
set constraints to bottom and leave top constraints
1) Select both buttons
2) Click on "Resolve auto-layout issues" button on bottom and click on "Reset to selected Constraints"
You should have 2 stack views. One Horizontal that contains the 2 buttons, and another vertical that contains the previous stack view. Set the horizontal stack view to "fill" and "equal spacing" and the vertical stack view to "fill" and "equal centering." Below I've included a couple of pictures to illustrate what I mean.
THE ONLY CONSTRAINTS ARE ON THE STACK VIEWS THAT BIND THEM TO THE SIZE OF THE CONTAINER VIEW, OR PARENT STACK VIEW.
This allows you to truly create an auto layout that scales with the device's screen size.
Use Constraints like this. These buttons have bottom fix with superview.
Please look at the ScreenShot attached for wCompact|hRegular for different screens, I am trying to make it working since hours but not getting any success. My requirement is that at the top there would be a label with some predefined margin. Although the Label content would render at the runtime, but I know the content size, so resizable label isn't needed actually I think. Now there would be three row at equal distance. In first and third row, there would be two buttons with equal height and width and in second row there would be button aligned horizontally. I have set the buttons image and text in storyboard. Control Alignment are set to Horizontal | vertical. Constraints for label are:
Pinned top space to superview, leading and trailing space equals to:8(superview), height equals:90.
Constraints for Button(View Transactions) are:
top space to label, bottom space equals to:8(New Launches Button) leading and trailing space equals to:8(superview) and 8(Place Request Button) respectively, and equal width and height for all buttons.
Looks fine for 4.7 and 5.5 But not satisfied with the output for smaller screens. As u can see resizing of buttons image not working properly(Larger space between button's image and text). One more thing is I don't wanna set the height of the label, cause it seems like a wrong practice in AutoLayout. Any help would be much appreciated.
You should set the Aspect Ratio for the Buttons, not just the equal width and height. In that case auto layout wont shrink the images.
Really you should put this into a scroll view so that if the height is too great the user can still see everything by scrolling. You should also not set static heights on labels, you should allow the intrinsic content size to apply.
Add a subview to your new scroll view. Pin the width of this subview to the width of the scroll view. Do not pin the height.
Add all of your buttons and labels to this new subview. Pin them to the edges of the view and allow the intrinsic content sizes to apply limits. Set various items to have equal widths and heights. Do not set explicit heights or widths (do everything by proportion or equality so auto layout can choose good sizes).
I have a design for a screen that should look like this (other things will be added later, but I cannot seem to resolve the basis...):
I have added Constraints to determine the following:
Both Labels are Constraint in spacing to the screen edges.
Middle View is Horizontally and Vertically Constraint to the Middle of the Background View Center.
I have added 4 Constraints to express Minimum and Maximum Vertical Spacing between the Middle View and the Labels (Current spacing as Maximum and Standard spacing as Minimum).
I have also added 2 Constraints to the Middle View to define Spacings from the Screen right and left edges.
I thought that it should be enough, but in reality, when switching between Retina 3.5 and 4 the Bottom Label disappears and the Middle View is cut in the middle:
I have tried lowering the Middle View Content Hugging and Content Compression Priorities, and still no good.
Here are the Warnings I get:
Any idea how to resolve this?
Or alternatively, how to approach it differently (preferably, still using Auto Layout)?
Add Equal Width & Equal Height constraints as well & It will work
Add TopSpaceToContainer constraint for Top Label. Then add width and height constraints for your yellow view at the middle. Remove the multiple vertical spacing constraints given to the Top Label and Bottom Label.
I am trying to use auto layout in x code to correctly resize my view to switch between iphone 4 and 5.
I have a similar problem as the one presented in the picture. Let's consider the UILabel at the bottom is fixed.
I want the top UILabel to be at the middle of the space between the navigation bar and the bottom label. I don't know how to add a constraint that says "top space and bottom space must be equal". As a result, I can only fix one of the two constraints and I cannot get the expected result.
Thanks
The way I do this in IB, is to embed the top label in a UIView. Give that view a standard vertical spacing constraint to the top layout guide, and another to the bottom label. Also give it a fixed width. Give the label centerX and centerY constraints to this view, and it should keep it centered in different screen sizes.
How about adding a container view that fills up the space between the 1st label and the navigation bar, and then center the 2nd label inside the container view.