I made an app that has a lot of content on its view (images, buttons, text labels, etc.) and is optimized for the iPhone 5 display. However, the part of the view that is missing when viewed on an iPhone 4 screen is just additional settings, and is perfectly acceptable to be hidden until scrolled to.
So, how do I made my entire view scrollable for iPhone 4 users? I tried just dragging and dropping a UIScrollVIew object over the top of the whole view, but it doesn't add scrolling capability.
I have worked with UIScrollView before, but it was always something I added to the view before anything else, and don't know how to go about adding it to my view now that there are already bunches of objects. Hopefully there is some easy solution that doesn't require manually addig every object as a subView, etc.
Thanks for the suggestions!
I don't know how your views are created, but the easiest thing would be to change the class of the main view from UIView to UIScrollView.
From the InterfaceBuilder you can select all your content views (images, buttons, text labels, etc.) and then select Editor > Embed in > ScrollView.
This will create a UIScrollView containing al the views selected.
WARNING: you will lose all constraints between these subviews and the superview or the layout margin. Relative constraints (from subview to subview) will remain.
This approach is very useful when you wan to make only some content scrollable.
Related
I designed about 40 view controllers using a 5.5 inch storyboard layout. After all of that I tested it on the iPhone 4S...big mistake. everything is jumbled together being for a larger screen size. I was able to fix one view controller up using Size Classes. I am wondering if there is any way I can adjust all 40 at the same time, or at least avoid doing this for every single one. It is really frustrating finding this out now. Thanks!
This is a relatively complicated issue you are attempting to solve, but I have two potential solutions. Both suggestions are based on moving your current interface into containing UIScrollView instances
If you are using storyboards, then for each of your view controller scenes, put a UIScrollView as a descendent of the view controller's view. From there, provided your subviews are contained within other views (like a container view for a set of buttons), you can move those into your scroll view. You will have to setup constraints to define the size of the scroll view's content, but this will allow the size of the device to have a smaller impact on the interface as you will get scrolling as needed.
If you are using nib files (.xib) then it is essentially the same thing, but easier. In this case, move a UIScrollView onto the canvas, but not as a subview of the default view. Once that is out there, move the original view to be a subview of the scroll view and set constraints to be 0 from the subview to the scroll view. Finally, right click drag from the File's Owner icon to the scroll view and set that as the view outlet.
Hopefully one of these will help you.
I am quite new to xcode.
I am trying to create a contact details form for an iPhone using the storyboard. The problem is that form is longer than the display and I can't work out how to design it using the storyboard.
Any ideas?
Tom
In IB, you can set the controller's size in Simulated Metrics to Freeform, then select the view and make it as tall as you want. Then, add a scroll view to take up the whole view, and add your UIElements, and lay them out how you want. When you run the app, the view controller will still only be as big as the screen (obviously), but the scroll view will be as big as you made the view in IB (you may need to increase its contentSize even more to be able to scroll to the bottom).
Such forms are often made in storyboards using a UITableView and setting the "content" of the table to be "Static Cells." You can set any number of cells and the contents of the cell you want. The table itself is scrollable inside the storyboard/Interface Builder editor and looks much the way it would when presented to a user.
First, select the tableView on the left
Then, you can move it simply scrolling (on mac, two fingers on the trackpad, or using the mouse wheel)
You should have a look at UIScrollView, it is designed to support content larger than screen size (like you see in web browser or settings)
Basic usage is:
//Set a size which will be able to cover all form elements
[yourScrollView setContentSize:CGSizeMake()];
//Your scrollView now extends from CGPoint 0,0 to contentSize.width,contentSize.height.
//Your subviews should be positioned according to scrollview's bounds not the viewcontroller.view or any other container view.
//Add all the form elements
[yourScrollView addSubview:...];
[yourScrollView setDelegate:self]; //If you need actions after user scrolled etc.
Have a look at the developer manual for more info. Most method names are quite self explanatory.
http://developer.apple.com/library/ios/#documentation/uikit/reference/UIScrollView_Class/Reference/UIScrollView.html
I have an existing view with several elements, I was thinking of how to include a scrollview to contain all the existing elements without having to go through redesigning one by one the elements,
My objective is, that when my orientation changes to landscape, the elements behind can be scrollable specially when a keyboard is currently displayed.
Can this be done manually or programmatically, and how? Or is there any best approach for this type of scenario's?
*Edit (for clarity)
My apologies for the lack of clarity with the initial question;
I have a view with 3 Textfield, A button and 2 switch, Initially my app only supported the "Portrait" orientation, however, recently I have decided to add "Landscape" orientation support, I already did this. Now my problem is when I'm on landscape the view elements gets covered by the keyboard (specifically). So I was thinking if I could include a scrollview and put the views existing elements(objects) without having to re-design the nib, what I have done already;
I drag a scrollview into the view then making all the existing elements as children of the scrollview so the hierarchy looks like;
--view
--scrollview
--textfield
--button
The end product I get with this approach is that all the elements stacks on top of the other, so I've lost my original design.
So this is what Im asking, is there anyway, to add a scrollview without having to go through the design phase again.
TIA
If your view is designed in a nib, from IB you can select all the elements of the view and then go to Editor->Embed in->Scroll View from the menu.
Following are the steps-
1.Add the scrollview to the main view as subview.
2.create a new view which contains all your elements for the scrollview.
3.add the new view to the scrollview as subview.
4.set the content size of the scrollview as the size of the new view.
Change the frame of the newView accordingly on orientation and repeat step 4.
Thats all you need to do..
I have a vertically scrolling uiscrollview - imagine an 'about this app' page of a tab bar app which goes on a bit and requires a scrollview. It only contains a few images, a video and some text (only the video has been coded in - the rest have been placed in the GUI). In storyboard (Interface Builder?) Xcode 4.2, everything is set up as it should be and works fine, but the view is only as large as what you see on the screen, is it not possible to manually arrange in storyboard the items that are initially offscreen - that you need to scroll up to? The only way I've found so far is to design them on the visible view then navigate them down with the arrow keys..
In the storyboard select the viewController, then in Attributes inspector change 'size' to 'freeform'. Then change the 'height' of the view/scroll view to as big as you need. The default settings of struts and springs should take care of resizing the view back correctly when the app is run, but you should double check.
I feel your pain. The only way I found is to manually pan the scroll view in the size inspector to reveal the portion of the view that you wish to visually edit.
Use a UIView to contain elements so they are positioned relatively to this view. Add the view as a subview to the scrollview at 0,0.
pan: use the Y coordinate say to -200, then edit the contents.
to place more contents in the hidden part, pan again to reveal new real-estate
when finished, restore the values of the ScrollView's height and X,Y position.
Make sure the scroll view frame rectangle is smaller than the contained view.
New: 3/26/2013
I stumbled upon what I think is even simpler way of dealing with UIScrollView directly in storyboard.
No code needed, just storyboard settings. This maybe new in iOS6.1 / Xcode 4.6
No need to disable constraints (i.e. uncheck "Use autolayout" in File Inspector for storyboard file)
No need to add UIScrollView* scrollView; in .h
No need to add self.scrollView.contentSize = ... in overrides of viewWillAppear or viewDidLoad
Here is what I did (important parts highlighted with **): (see code)
Create a new project with storyboard enabled
Drop in a UIScrollView, set class in identity inspector for view controller
In attributes Inspector, change Size under simulated metrics to Freeform**
Select scroll View; In attributes inspector, turn on "scroll enabled" and "background" to "White" (you'll figure out why - if you don't)
Under Size Inspector (with scroll view selected) change the height to 900 for example**
Add buttons, one on top and one at the bottom
Add a default handler for buttonTouchUpInside for both buttons and simply Log sender.
See Code Select the View Controller and scroll view and check inspectors.
Just change the 'Simulated Size' of the view controller to freeform and set a height that is larger than the usual size, you will be able to see all the outlets you need to edit.
On iOS 6.0 you can drag a Container View inside your Scroll View. This will automatically create a new View for your content, outside of the current scene. You can then resize this view as big as needed to fit your content.
I believe you would still have to set the ScrollView content height at runtime, but at least you can design you content view at once without having to scroll up and down on IB.
Just uncheck the "Autoresize subviews" from any view that you're trying to resize and it should keep all your objects from resizing with it.
I've been struggling with this for a while now, and every single thing I've tried has failed.
Specifically, What I am trying to achieve is a freeform sized modal dialog with a scrollable view containing a container for another view. I have had a lot of varied results, including occasionally having it working correctly. Most often I get it looking exactly correct, but with no scrolling.
In finally downloaded Dickey Singh's code, which worked perfectly but had nothing special. (Excellent clean solution BTW). So, I added a container view to it, exactly as I had in my code, and it broke!
After some experimenting, I worked out what is going on. Just bear with me.
1) Using Auto Layout, the size of the scroll view seems to dictate what the scrolling bounds will be. Setting "contentSize" in "USer Defined Runtime Attributes" seems to have no effect on this, and neither does setting "contentSize" or "bounds" in "viewWillDisplay" or "viewDidLoad". Thus if the initial size of the scroll view is 800x800, that will be all the space that can be displayed. For this reason, when I want a scrollable region, I create a container view and then put the scrolling view inside the content.
2) Without Auto Layout, setting "contentSize" in "User Defined Runtime Attributes" works, as does by setting it programmatically in "viewDidLoad". I prefer to use "User Defined Runtime Attributes" because it keeps the size with the layout. This solution allows you to use scrolling view with more flexibility, since it can be any size at design time.
3) Regardless of Auto Layout, if any view within the scrolling region exactly matches EITHER the horizontal or vertical frame bounds, then the scroll view ceases to function as a scroll view. This applies to my own code and to Dickey Singh's code in every possible configuration that I have tried.
I have no idea what is causing (3), but it is clearly a bug.
I hope this helps everybody out there who is struggling to use scroll view. I imagine that some people are using them without any problem, and some (like me) have had noting but problems with them.
Here's my solution to design a ScrollView with a content larger than the screen entirely in Storyboard (well, except for 1 single line of code :-) :
https://stackoverflow.com/a/19476991/1869369
I'm currently developing an app for iOS 7, and I did exactly as #Dickey Singh's answer, but it doesn't work in the beginning.
After checking the storyboard, I found that we also need to add Auto Layout Constraints for the view controller who holds the scrollView.
It seems that such auto layout constraints would be added automatically before Xcode 5, but now we need to do it ourselves.
The way to add constraints: First select the view controller in the storyboard; Enter 'Editor' in the top menu; Select the 'Resolve Auto Layout Issues'; Select the 'Add Missing Constraints In Container'. Done :-)
I am pretty confused on how to position the controls on a UIScrollView that extends beyond the associated UIView.
I have a long form that needs to be filled out which is on one long UIScrollView. I have read (but can't believe) that there is no way to use InterfaceBuilder in order to position the controls, but instead you have to hardcode X\Y coords. in code (or in IB, but they still won't show as WYSIWIG)
Do you really have to do this all with hard coded coords ?
If so what is the best approach to accomplish this ? What if certain controls can become "hidden"...do you then need to have code that moves the coordinates of all controls further down on the page up ?
Would a better approach be to put all the controls on different views and then add those views to the UIScrollView (at least you could then "see" them in IB...)
I hope I am missing something :-)
You do not have to do all of this in code.
You can just have an XIB file for your embedded UIView. This can be as large as you need it to be. Then have a view controller that loads this XIB, and add its view to your scroll view (setting the content size appropriately.)
As for hiding controls - XIB files probably won't help you there. But you can hide controls and adjust the coordinates of other controls in code. (And change the content size of your scroll view if necessary.) This might be a reason to have different controls in different subviews of your scroll view's content view.
In IB, you can create your UIScrollView at the top of the hierarchy and give it the height that you want. Then you can set your elements as you want, in a WYSIWYG way. Once you finished, you just set the size of your UIScrollView to the size you want and set it under the hierarchy of your ViewController's UIView, and finally in the code, you set the content size of your UIScrollView to the size it takes. Easy !
I would encourage you to read this http://www.uxbooth.com/blog/mobile-form-design-strategies/, it's good advice if you want to design a long form, in a user friendly way :)