I've been facing this issue from past 2 weeks and not yet got a solution.
I'm using UIScrollview in my application where the problem exists.
Generally in my app, there is dynamic text and images with different sizes will come from webservices. For example, imagine the Facebook Newsfeed. My application is similar to the Facebook newsfeed. Sometimes, there will be only text, sometimes there will be text and images. And comments for that post.
As i've seen in many links, the heirrarchy i'm following is SuperView-->UIScrollView-->Content View and the elements are placed in that content view. I'm assigning the constraints from the elements in the contentview to the Superview (ContentView --- constraints -- SuperView). When the content in the view exceeds the size of the superview, it has to scroll. But the scrollview content size is limited to the size of 600x600 i.e., in main.storyboard, when we design for W any x H any size. I've seen many tutorials and searched many sites. But following them gives me no luck.
Any help is appreciable.
Here is how to set up a scrollView in Interface Builder from scratch that works with Auto Layout.
Start with a new ViewController. Drag out a scrollView such that it fills the view. Untick Constrain to margins and constrain the left, top, right, and bottom edges of this scrollView to the left, top, right, and bottom of its superview with offsets of 0. This allows the scollView to fill the screen on any device in any orientation. You can make your scrollView take up less of the screen if you like, just make sure it is fully contrained.
Add a view to your scrollView. This should be the only top level view on your scrollView and it will serve as your contentView.
Constrain the left, top, right, and bottom edges of this contentView to the left, top, right, and bottom of the scrollView with offsets of 0. At this point, you will see warnings about ambiguous content size. That is because you haven't told it yet how big your content view will be.
To size the contentView, add width and height constraints to the contentView. If you want it to scroll, the width and height must be larger than the width and height of the scrollView itself. If you only want to scroll vertically, set the width of the contentView to be equal to the width of the scrollView. To do this, in the Document Outline view, control-drag from the contentView to the scrollView and select Equal Widths from the pop up.
If you want to be able to change the height of your contentView from code (to account for dynamic content), first create a height constraint for your contentView by control-dragging within the contentView and selecting Height from the pop up. Create an IBOutlet to the height constraint by control-dragging from the height constraint (found in the Document Outline view) to your ViewController's code. Give the outlet a name like scrollViewHeight then set the height with a value like scrollViewHeight.constant = 2000 when you need to change the scrollView's height.
Simply add your UIScrollView to your UIViewController's view in the storyboard and add the appropriate constraints in the interface builder.
Then, build your content view in the code and give it any frame you want, now start adding your controls to this content view and calculate the size of each one (especially the height), and at the end you have the total height of your controls.
Now set the frame of the content view to match that height and add it as a sub view to your scroll view, then set the content size in the code like this:
_scrollView.contentSize = contentView.frame.size;
Another note, do this changes to the sizes in the viewDidLayoutSubviews to avoid any problems with different screen sizes but be careful, this event is called many times so have a BOOL or something to ensure that the code that creates the view and add it to the scroll view is executed once, e.g. like this
- (void)viewDidLayoutSubviews {
[super viewDidLayoutSubviews];
if (! built) {
// Do everything I explained above here
built = YES;
[self.view layoutSubviews];
}
}
I tried to create a custom freefrom view with interface builder.
I have a UIView which is containing a UIImageView and UILabel.
I set the constraints to adjusting the Label according to the Image etc and a margin to the superview.
Now I want the superview to exactly fit the subviews. But when I press Editor -> Size To Fit Content, the superview is not resized completely and the constrains are in conflict. What there appears is a implicit constraint ("iPhone Portrait Screen Height"), which can not be altered/deleted. See Screenshot below:
While not ideal, depending on how your XIB is structured and how you are referencing the view, you could create a "scratch pad" view and place your custom view inside of that just to see how everything will layout. That is if you're setting the view to an outlet defined in the XIB's File Owner, you can just connect it to the view you've created inside the "scratch pad".
For example, I created a container view with a square and a switch inside. The top example complains of conflicting constraints and doesn't layout correctly, while the bottom example shows the same thing centered in a throw-away view. Again, not ideal, but it's working for me.
Edit: I just realized that some size class constraints may be lost once the "scratch pad" view is discarded so that is another wrinkle to consider. Still looking into this.
Just to make it simple forget the label for the time being. You have already added the width and height constraint of the image view, now instead of using sizetofit content, try adding leading, trailing, top and bottom constraints between the image view and it's parent view. With that your parent view should fit the image view.
The same technique (constraints to parent view) can be used to get it work with the image view and label together.
I noticed that when I physically dragged the superview's width and height to satisfy the constraints, the red constraint errors went away along with the "iPhone Portrait Screen Width" constraint. In other words, my constraints dictated that my subview be bottom aligned with its super view. If I dragged the superview's bottom edge up to align flush with the subview, the errors went away. Still seems buggy and unintuitive.
There are plenty of answers regarding scroll views with autolayout and plenty about scrollview paging, but I can't find a single thing that addresses both.
I'm not trying to do anything fancy...just 7 full-screen image views that I would like to scroll horizontally with paging, but for the sake of simplicity (ha!), I decided to attempt it all right in the storyboard.
The controller is set to freeform size with a width of 2240 (320*7). I then set it up the way Apple suggests for autolayout...
UIScrollview
/-----UIView
/----------Content (7 image views)
The scrollview has 0/0/0/0 constraints to all edges, as does the UIView inside.
When Paging Enabled is off, it behaves beautifully - exactly as expected. But once I turn Paging on, a swipe makes the view go crazy, scrolling the entire 2240 width, and then bouncing back and eventually landing on the proper page.
I know I have the tried-and-true option of just scrapping it all and doing it programmatically, but my stubbornness wants to figure this out. It must be possible!
I have a UIScrollView with paging and AutoLayout working perfectly fine. Here is my set up:
UIView // Main view
|---> Dummy UIView // See below
|---> UIScrollView
|---> Content UIView
|---> Page 1 Container
|---> Page 2 Container
The constraints I used are
Dummy UIView -> Parent UIView is whatever I want the size of the paging scrollview to be, and UIScrollView -> Dummy UIView is (0,0,0,0) on all sides. This is just regular auto layout stuff which creates a dummy UIView where I want to put the scrollview and a UIScrollView which completely fills the dummy UIView.
Refer to the Technote from Apple for AutoLayout and UIScrollViews: https://developer.apple.com/library/content/technotes/tn2154/_index.html
The content inside the scrollview has to have an intrinsic size. It cannot rely on the scrollview to get its size.
As indicated in the TechNote, set the constraints from all four sides of the Content View to the UIScrollView to (0,0,0,0). The exact values don't really matter since all you are telling the UIScrollView is that this is the view to get the contentSize from.
At this point Xcode will complain that Content View has no intrinsic size. And here is the trick: This is where we use the Dummy UIView that we created above. The size of the Dummy UIView is precisely the size of each page in the UIScrollView.
So we set the height of Content UIView equal to height of Dummy UIView and the width of the Content UIView equal to the number of pages times the width of the Dummy UIView using AutoLayout. (For the later change the multiplier in the constraint to be the number of pages).
Now create pages inside the Content UIView as you normally would and set Paging Enabled to yes on your UIScrollView and voila you have paging in a UIScrollView using AutoLayout.
I've tested this in IOS 6, 7 & 8.
Update:
Here is a sample project with this setup as requested:
https://github.com/kostub/PagingScrollView
Follow Working with Scroll Views to build paging UIScrollView with content in Interface Builder.
I'd also recommend using Stack View as a content view for your UIScrollView since it allows to essentially reduce layout complexity.
When you use traditional approach each entry view inside content view has 5 constraints at least:
leading to previous entry
top to parent
trailing to next entry
bottom to parent
equal width to scroll view
Stack View arrange its content automatically thus the only constraint each entry should have is "equal width to scroll view"
Check this project https://github.com/eugenebrusov/ios-stack-paging-scroll to see Stack View in action.
It is possible to use the scrollView's size to set the size of the contentView, contrary to https://developer.apple.com/library/ios/technotes/tn2154/_index.html; this was tested in iOS 8.2 beta 3.
Note that I did this programmatically, but hopefully this is useful to someone. The hierarchy is:
root: UIView
scrollView: UIScrollView
contentView: UIView
page0
page1
...
Add constraints to position scrollView relative to root and any siblings of scrollView.
Attach contentView sides to its superview (scrollView):
"H:|[contentView]|"
"V:|[contentView]|"
Add size equality constraints to contentView and scrollView; this is the part that contradicts TN2154 (which says "do not rely on the scroll view to get their size"):
contentView.height == scrollView.height
contentView.width == scrollView.width
Note: the above is made-up notation for a programmatically instantiated height constraint.
Lay out the pages relative to their superview(contentView); I did this by tacking the first page left/top to contentView left/top, and subsequent pages left/top to previous page right/top.
Credit to Koustub for getting me on the right track - his solution works, but with some fiddling I was able to eliminate the dummy view.
I have a scroll view. On the scroll view I have added many necessary UILabels and UIButtons etcs.
Now I want to add MORE labels and buttons but I have no room on the interface of the view to add them, otherwise they will overlap the other elements. How do I add more UI elements so that they can be interacted with when the user scrolls? I was thinking if I hold the UIelement over the bottom of the scroll view, the scroll would "scroll down" and present me with more space.
The key thing here is to remember that a view controller's main view in a nib (.xib file or storyboard) is always resized anyway when it is put into the interface. The size you see it at in the nib editor (Interface Builder) is just a "serving suggestion". Thus, SamirChen's answer is quite right: set the view to Freeform so you can resize, and just make it big enough to hold the scroll view which itself is big enough so that you can put in all the desired contents.
I would add just two points that you will find helpful:
Use autolayout outside the scroll view. This will cause the scroll view to become the right size when the view is resized to fit the interface, and will cause everything else to be repositioned correctly.
Use autolayout inside the scroll view too! This is the really cool part. If you set up sufficient constraints between all the contents of the scroll view and the scroll view itself (their superview), the contentSize will be calculated for you automatically using constraints from the inside out! Thus, you don't have to know the content size or set it in code!
It is easier to see than to describe, so download the example code from my book and look at the examples currently entitled "bk2ch07p367scrollViewInNibAutolayout" and "bk2ch07p367scrollViewInNibAutolayout2".
In the Interface Builder, as far as I know, you cannot scroll the Scrollview.
If you just want to add more labels and buttons into your scrollview in the Interface Builder, you can set the size of the View Controller which holds your scrollview to be Freeform in Attribute Inspector. Then you can set the size of the View to any value you want in Size Inspector. After that, you can change your scrollview's size to add more labels and buttons.
"You could design a UIView with all this content on it in a .xib file and make the view whatever size you wanted, then put it into the scroll view in viewDidLoad" referenced from #nhgrif.
Don't forget to change the scroll view's contentSize property to meet the UIView's bounds.
I have a scroll view with content that is 1000px tall and would like to be able to lay it out for easy design on the storyboard.
I know it can be done programmatically but I really want to be able to see it visually. Every time I put a scroll view on a view controller it won't scroll. Is it possible to get it to work like I want or do I have to do it in the code?
I'm answering my own question because I just spent 2 hours to find the solution and StackOverflow allows this QA style.
Start to finish here is how to make it work in storyboard.
1: go to you view controller and click on Attribute Inspector.
2: change Size to Freeform instead of Inferred.
3: Go to the main view on that storyboard, not your scrollview but rather the top level view.
4: Click Size Inspector and set this view to your desired size. I changed my height to 1000.
Now you will see that you storyboard has your view setup so you can see the entire height of your scroll for easy design.
5: Drop on a scrollview and stretch it so it takes up the whole view. You should now have a scrollview with size of 320,1000 sitting on a view in your view controller.
Now we need to make it scroll and need to make it show content correctly.
6: Click on your scrollview and click on Identity Inspector.
7: Add a User Defined runtime attribute with KeyPath of contentSize then type of SIZE and put in your content size. For me it is (320, 1000).
Since we want to see our whole scroll view on the storyboard we stretched it and it has a frame of 320,1000 but in order for this to work in our app we need to change the frame down to what the visible scrollview will be.
8: Add a runtime attribute with KeyPath frame with Type RECT and 0,0,320,416.
Now when we run our app we will have a visible scrollview has a frame of 0,0,320, 416 and can scroll down to 1000. We are able to layout our subviews and images and whatnot in Storyboard just the way we want them to appear. Then our runtime attributes make sure to display it properly. All of this without 1 line of code.
Here are the steps with Auto Layout that worked for me on XCode 8.2.1.
Select Size Inspector of View Controller, and change Simulated Size to Freeform with height 1000 instead of Fixed.
Rename the view of View Controller as RootView.
Drag a Scroll View as subview of RootView and rename it as ScrollView.
Add constraints for ScrollView:
ScrollView[Top, Bottom, Leading, Trailing] = RootView[Top, Bottom, Leading, Trailing]
Drag a Vertical Stack View as subview of ScrollView and rename it as ContentView.
Add constraints for ContentView:
ContentView.height = 1000
ContentView[Top, Bottom, Leading, Trailing, Width] = ScrollView[Top, Bottom, Leading, Trailing, Width]
Select Attributes Inspector of ContentView, and change Distribution to Fill Equally instead of Fill.
Drag a View as subview of ContentView and rename it as RedView.
Set Red as the background of RedView.
Drag a View as subview of ContentView and rename it as BlueView.
Set Blue as the background of BlueView.
Select RootView, and click Update Frames button.
Update Frames is a new button in Xcode8, instead of Resolve Auto Layout Issues button. It looks like a refresh button, located in the control bar below the Storyboard:
View hierarchy:
RootView
ScrollView
ContentView
RedView
BlueView
View Controller Scene (Height: 1000):
Run on iPhone7 (Height: 1334 / 2):
Here are the steps that worked for me on iOS 7 and XCode 5.
Drag a ViewController (it comes with UIView "View").
1.1 Select "View Controller" and select "File Inspector" and uncheck "Auto layout".
Drag a ScrollView (as child of ViewController's UIView "View")
Select ScrollView and open "Identity Inspector".
Enter "contentSize" for keyPath. Select "Size" for Type. And Enter {320, 1000} for value.
Note: Step 4 is simply saying that the scroller contains some content whose size is 320x1000 units. So setting contentSize will make scroller work.
Select View Controller, Select "Attributes Inspector" then select Freeform from Size.
Note: step 5 will allow us to change the size of "View" that the view controller comes with.
Select "View" and then select "Size Inspector".
Set Width to 320 and height to 1000.
Note: 5, 6 & 7 is purely for us to see stretched or entire expanded view inside StoryBoard.
Note: Make sure to unselect "Auto Layout" on View Controller.
Your View hierarchy should look like:
After hours of trial and error, I've found a very easy way to put contents into scrollviews that are 'offscreen'. Tested with XCode 5 & iOS 7. You can do this almost entirely in Storyboard, using 2 small tricks/workarounds :
Drag a viewcontroller onto your storyboard.
Drag a scrollView on this viewController, for the demo you can leave its size default,
covering the entire screen.
Now comes trick 1 : before adding any element to the scrollView, drag in a regular 'view' (This view will be made larger than the screen, and will contain all the sub elements like buttons, labels, ...let's call it the 'enclosing view').
Let this enclosing view's Y size in the size inspector to for example 800.
Drop in a label onto the enclosing view, somewhere at Y position 200, name it 'label 1'.
Trick 2 : make sure the enclosing view is selected (not the scrollView !), and set its Y position to for example -250, so you can add an item that is 'outside' the screen
Drop in a label, somewhere at the bottom of the screen, name it 'label 2'. This label is actually 'off screen'.
Reset the Y position of the enclosing view to 0, you'll no longer see label 2, as it was positioned off screen.
So far for the storyboard work, now you need to add a single line of code to the viewController's 'viewDidLoad' method to set the scrollViews contents so it contains the entire 'enclosing view'. I didn't find a way to do this in Storyboard:
- (void)viewDidLoad
{
[super viewDidLoad];
self.scrollView.contentSize = CGSizeMake(320, 800);
}
You can try doing this by adding a contentSize keyPath as a size to the scrollView in the Identity Inspector and setting it to (320, 1000).
I think Apple should make this easier in storyboard, in a TableViewController you can just scroll offscreen in Storyboard (just add 20 cells, and you'll see you can simply scroll), this should be possible with a ScrollViewController too.
Getting Scrolling to work in iOS7 and Auto-layout in iOS 7 and XCode 5.
In addition to this: https://stackoverflow.com/a/22489795/1553014
Apparently, all we need to do is:
Set all constraints to Scroll View (i.e. fix scroll view first)
Then set distance-from-scrollView constraint to the bottom most item to scroll view (which is the super view).
Note: Step 2 will tell storyboard where the last piece of content lies within Scroll view.
For this example, I have unchecked the Autolayout feature of the Interface builder. And, I'm still using (for no reason at all) the relatively old 4.6.1 version of Xcode.
Start with a view controller that has a scroll view over it (the main view).
1: Add a Container View, from the Object Library, to the scroll view. Notice that a new view controller is added to the storyboard and it is linked to the view controller with the scroll view.
2: Select the container view and, on the Size Inspector, make it anchor to top and left without auto resizing.
3: Change its height to 1000. (1000 is used for this example. You should apply the value that you require.)
4: Select the new view controller and, from the Attributes Inspector, change Size to Freeform.
5: Select the view of the new view controller and, on the size Inspector, change the height to 1000 (which is equal to the container view's height).
6: For your test later, while still on the view of the new view controller, add a label at the top and at the bottom of the view.
7: Select the scroll view from the original view controller. On the Identity inspector, add an attribute with the keyPath set to contentSize, type set to Size, and value set to {320, 1000} (or your container view's size).
8: Run on the 4-inch iPhone Simulator. You should be able to scroll from the top label up to the bottom label.
9: Run on the 3.5-inch iPhone Simulator. You should be able to scroll from the top label up to the bottom label.
Remember that Xcode 4.6.1 can only build for iOS6 and below. Using this approach and building for iOS6, I am still able to achieve the same results when the app is run on iOS7.
Note that within a UITableView, you can actually scroll the tableview by selecting a cell or an element in it and scrolling up or down with your trackpad.
For a UIScrollView, I like Alex's suggestion, but I would recommend temporarily changing the view controller to freeform, increasing the root view's height, building your UI (steps 1-5), and then changing it back to the standard inferred size when you are done so that you don't have to hard code content sizes in as runtime attributes. If you do that you are opening yourself up to a lot of maintenance issues trying to support both 3.5" and 4" devices, as well as the possibility of increased screen resolutions in the future.
Disclaimer :- Only for ios 9 and above (Stack View).
If you are deploying your app on ios 9 devices use a stack view.
Here are the steps :-
Add a scroll view with constraints - pin to left, right, bottom, top (without margins) to superview (view)
Add a stack view with same constraints to scroll view.
Stack View Other Constraints :- stackView.bottom = view.bottom and stackView.width = scrollView.width
Start adding your views. The scroll view will decide to scroll based on the size of the stack view (which is essentially your content view)
Here's how to setup a scrollview using Xcode 11
1 - Add scrollview and set top,bottom,leading and trailing constraints
2 - Add a Content View to the scrollview, drag a connection to the Content Layout Guide and select Leading, Top, Bottom and Trailing. Make sure to set its' values to 0 or the constants you want.
3 - Drag from the Content View to the Frame Layout Guide and select Equal Widths
4 - Set a height constraint constant to the Content View
i wanna put my 5 cents to accepted answer:
i've been researching topic for 2 days and finally found a solution that i will be using always from now on
go up to item 4 in accepted answer and forget about adding attributes of frames and contentsizes and so on
to make everything automatic just use solution from this link
everything is clear, easy, elegant and works like a charm on ios 7. i'm pretty glad with all that lol
You should only set the contentSize property on the viewDidAppear, like this sample:
- (void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
self.scrollView.contentSize=CGSizeMake(306,400.0);
}
It solve the autolayout problems, and works fine on iOS7.
Here is a simple solution.
Set the size attribute of your view controller in the storyboard to "Freeform" and set the size you want. Make sure it's big enough to fit the full content of your scroll view.
Add your scroll view and set the constraints as you normally would. i.e. if you wants the scroll view to be the size of your view, then attach your top, bottom, leading, trailing margins to the superview as you normally would.
Now just make sure there are constraints in the subviews of the scrollview that connect the top and bottom of the scroll view. Same for left and right if you have horizontal scrolling.
In iOS7 I found that if I had a View inside a UIScrollView on a FreeForm-sized ViewController it would not scroll in the app, no matter what I did. I played around and found the following seemed to work, which uses no FreeForms:
Insert a UIScrollView inside the main View of a ViewController
Set the Autolayout constraints on the ScrollView as appropriate. For me I used 0 to Top
Layout guide and 0 to Bottom layout Guide
Inside the ScrollView, place a Container View. Set its height to whatever you want (e.g. 1000)
Add a Height constraint (1000) to the Container so it doesn't resize. The bottom will be past the end of the form.
Add the line [self.scrollView setContentSize:CGSizeMake(320, 1000)]; to the ViewController that contains the scrollView (which you've hooked up as a IBOutlet)
The ViewController (automatically added) that is associated with the Container will have the desired height (1000) in Interface Builder and will also scroll properly in the original view controller. You can now use the container's ViewController to layout your controls.
Here's a bit of a grubby answer that get's to the same solution for vertical scroll views, but (against the ethos of stackoverflow) doesn't answer the question. Instead of using a scrollView, just use a UITableView, drag a normal UIView into the header, and make it as big as you want, you can now scroll the content in storyboard.
Apparently you don't need to specify height at all! Which is great if it changes for some reason (you resize components or change font sizes).
I just followed this tutorial and everything worked: http://natashatherobot.com/ios-autolayout-scrollview/
(Side note: There is no need to implement viewDidLayoutSubviews unless you want to center the view, so the list of steps is even shorter).
Hope that helps!
The key is the contentSize.
This is often missing and not indicated when adding a UIScrollView.
Select the UIScrollView and select the Identity Inspector.
Add a contentSize keyPath as a size to the scrollView in the Identity Inspector and setting it to (320, 1000).
Scroll away.
If you are using auto-layout than best approach is to use UITableViewController with static cells in storyboard.
I have also once faced the problem with a view that require much more scrolling so change the UIScrollView with above mentioned technique.