I have a UIView in the storyboard where all the constraints are defined. Now I have to change it so that all the subviews are inside a new scroll view. I drag a scroll view into the view, adjust the size and then add all the subviews into the scroll view. All the autolayout constraints are now out of place and the best solution I find is to delete the constraints and create them again, but this is very time consuming. Is there a better way to do this?
Unfortunately, there is no easy way to transfer the constraints. You can take a look at this article that shows how to edit your storyboard in a text editor.
One thing that can at least help a little bit is the "Embed In" functionality. This will wrap a container around your selected child views and at least save you the time of repositioning everything.
Editor > Embed In > Scroll View
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firstly I have Placed 3 labels in the xib file and I added constraints to the elements(using the Auto layout in storyboard), next I got the requirement to add an image to its background so to do this first I need to remove those constraints after that I added UIImageView and finally need to set constraints to all UI elements but if I have more UI elements with more constraints its more difficult to remove constraint and adding view how to solve this issue
Sometimes its hard to implement when information is poor when you begin. To solve this particular problem, you could have a transparent container view. Just make UIView, place your Elements on it and add constraints. When you now have to add another view behind it, you just have to remove the constraints from the container. Makes things easier.
Another thing is, you can leave those constraints as they are. They refer to the view you have put the Elements in. When you now add another view behind them, you just can add constraints to this new view and the other elements are not affected.
Hope that halps a bit!
I'm trying to place UIImage, UITextView and UIView one after another vertically.
I've set all constraints and spaces between views. But it says that it need constraints for Y position or height for UIView and UITextView.
What have I done wrong?
Here is screenshot: http://s019.radikal.ru/i616/1509/63/f18ed2a349f3.png
Generally these problems arise from putting a UIImageView itself with constraints. Your best bet is to put in a view and embed the image inside the view. This should make your life a lot easier. Just reset constraints and then click add missing constraints on the whole controller. :-)
I have a problem here. For last 3-4 days I'm trying to the find the solution but no avail. I'm using a xib to load a view as a subview to scrollView.
I'm using iOS8 and size classes and auto-layout as well.
The problem is that the view gets added to the scrollview but scrollview is unable to go beyond a point. That is I'm not able to scroll till the bottom.
This is frustrating as I have just started to develop iOS apps.
I'm attaching the screenshots for the constraints that I have applied. Hope to get some help here.
The first screenshot is the actual view controller's view that holds the scrollview.And the Place Detail Info View is the placeholder where the view loaded from xib is added. The screenshot also lists the different constraints as well.
The second and third screenshots is of the xib file which i'm trying to load into scrollView.
Please let me know where I have gone wrong.
As said above, the issue is related with the content size of your scroll view. Just try adding width and height (either explicit or implicit: see explanation below) constraints to every direct subview of your scroll view and then define all distance constraints among those.
* By "implicit" width/height constraints I mean things like "aspect ratio", "equal width/height" relation between two views.
P.S. When dealing with scroll view-like controls and auto layout, there should be an exhaustive (some of which may seem redundant) set of constraints for subviews.
Hope this helps.
Your problem is with the view who is immediate subview of your scrollview.In autolayout,scrollView calculate its content size according to its subview.
follow these steps after removing all constarints from this view,i hope u will get your problem solved.
1.for your scroll view,set all 4 constraints i.e leading edge,trailing edge,superview and bottom constraints.
2.now for the view that is immediate subview to your scrollview,set all 4 constraints (leading,trailing,top and bottom),along with these set height constraints and make width equals to scrollview.
if your immediate subview's height is greater than your screen size or scrollview,it will scroll for sure.
run and check whether you are able to scroll and proceed furthur.
after step 2,all your constarints related ambgious type error will resoved.now you can set all other constraints as usual.
for more clear understanding setting constarints in scrollview see this https://www.youtube.com/watch?v=4oCWxHLBQ-A
In interface builder itself there is an option to preview your constraints for all the available devices. This will ensure you that the constraints work fine for all the available devices from Apple. Here is a quick tutorial that will help you with it.
http://adoptioncurve.net/archives/2014/08/working-with-size-classes-in-interface-builder/
Once that is verified and you are still not able to find a suitable solution, then probably there is something wrong in the content size for your scroll view. Try to increasing your scroll view content size.
I hope this should solve your problem.
Happy coding. Cheers :)
I have read a lot of SO question about this already but nothing seems to work in my case. Simply when you add a UITableView and you test it and rotate the screen it will keep the width of the portrait orientation.
How can I make it so that it will always fill the screen's width for any screen size?
EDIT : My size inspector
Use the Autosizing feature in Storyboard for your UITableView. How to set it:
1.Select your UITableView.
2.Open the right pane -> Size Inspector:
3.Scroll down to the View section, here you'll see the Autosizing menu:
Don;t forget to disable Autolayout feature:
You're using AutoLayout in your XIB, so the AutoResizingMask stuff isn't your best route to success. You need to set the autolayout constraints on your TableView so that there is a 0 px gap between the leading (left) and trailing (right) sides of the TableView and its superview.
You can see from your screenshot that you already have some constraints in place, but they're probably not correct. I suggest you start by resetting all the existing constraints: I find that's usually best when I've got confused about where I am with constraints.
Select the top level view in your XIB file
Select Editor -> Resolve Auto Layout Issues -> Clear All Constraints in View from the menu
Select your TableView
Select Editor -> Resolve Auto Layout Issues -> Reset to Suggested Constraints from the menu
If that does the trick for you, I'd advise that you spend some time getting familiar with AutoLayout and review the constraints generated: you can select and edit them in the size inspector. This is also a pretty good tutorial.
For custom views, I often add my constraints programmatically as it's really easy to keep track of them - they're much more visible than when they're built in IB. I use a set of categories, provided by another SO user, that you'll find here and they make the code very easy to read and maintain.
I have been struggling with IB and auto layout and figure there must be an easier way to create a simple scrollable form with multiple fields on it. The width can adjust to the device screen width (or in the case of the iPad to the details view of a split view.
The basic layout is simple a label and underneath a field (in some cases the field must have a minimum height) repeated for each attribute.
I think I must be doing something completely stupid or IB's autolayout is hopeless, I suspect the former. In any event whatever I do in IB fields just adopt whatever constraints they feel like it seems. Even when I set a constrain it seem IB just replaces it sometimes.
Currently I am using a view with a fixed height and width that fits the screen and laying out fields on this form, however its a complete nightmare having to pin every field in almost every direction. And then IB complains about a million constraints that it can't satisfy.
Hopefully someone has a better way of doing this they are willing to share - perhaps it might be best just to write some code to set up the constraints rather than relying on IB ?
Thanks
You are right UIScrollView and autolayout is not clear at first look.
You have to understand that when you are adding layout constraints for a view inside scroll view, the superview is content view of scroll (not the view of the UIScrollView) that can be more or less then current view of the ScrollView in IB.