I have constraint using Visual Formatting that looks like this...
V:|-75-[basic][photo(220)][tiles(75)]-0-[detail]-[remark(>=25)]-[spacer(25)]-[agent(>=150)]-50-[map]-15-[share]-15-[disclaimer]-(>=50)-|
The detail view has an event handler that when the view is click it expands from 50px to 800px. The event is working but the autolayout doesn't seem to handle the resizing. I have tried...
.needsUpdateConstraints()
.updateConstraints()
.layoutIfNeeded()
On all of the views including children and superviews.
Any ideas on how to get this to work?
Related
I am trying to implement interface which elements are resized on some events. I have a button and a NSCollectionView inside the NSView. The problem is as follows: when resize of the button affects the size of View, sometimes elements of NSCollectionView become invisible. The size of button is changed programatically by enabling a constraint of bigger width.
While some elements are invisible, the NSCollectionView act like if they were visible as usual - I can scroll the collectionView and can see the selectedItem value.
The Layout of NSCollectionView is Content Array (Legacy)
Here are some screenshots:
Everything is ok from the start
Some elements are invisible after the button became wider
Noticeable thing: If user resizes the View so that items need to be rearranged, items in NSCollectionView become visible again.
Here is the link to XCode project:
https://www.dropbox.com/sh/annv6d7a52h16u6/AACeOUsv2E-ac9q28V3MPjAsa?dl=0
#Willeke have found a solution:
Switching off "Autoresizes Subviews" of the NSCollectionView fixes the problem.
I have a UIViewController that contains UITextField. I set the inputAccessory of the textfield to a UIToolbar that I create.
My ViewController's view is inside a UIScrollView (To handle the events of keyboard popping up)
Before:
Now, when the keyboard pops up, suddenly my ScrollView is setting it's contentOffset.y to 64 with animation, so part of my view is pushed above the top of the screen:
After:
This is done by the framework because I'm using a toolbar for inputAccessoryView.
If i'm dropping the toolbar there is no animation and no content offset.
Is anyone knows how can I disable this automatic animation and scrolling?
Thank you!
You can use a combination of boolean flags and your UIScrollViewDelegate to prevent the scrolling from taking place. Scroll view delegates can be used to detect when scrolling is taking place, modify the type of scrolling, and also simply prevent it from happening, so your best approach is probably to look into detecting when the keyboard goes up (via a notification or text field delegate, whichever is more appropriate) and using that in combination with your scroll view delegate.
This seems to me as though it would be a common problem, but I can't seem to find the answer anywhere. This question seems to address the issue, but I can't seem to get the solution to work and I'm not sure it's referring to Xcode 4.
When using Interface Builder in Xcode 4 and working with a UIScrollView, is there a way to scroll the view down in Interface Builder itself to view/add/edit controls that are out of the viewable section of the screen? I've managed to push a couple controls down using the arrow keys, but now I can't see them and therefore can't manipulate them in Interface Builder. Scrolling the view in IB would be first prize, but if there's a way to even select the controls using a drop-down menu or whatever so I can push them back up with the arrow keys, that would at least be something. Thanks.
Set the ViewController's Simulated Size to Freeform and set a very large height. E.g: 1000 and voilà! You can now scroll to see all the stuff and add even more! :)
P.S: Remember to set set Fixed when you are finish to avoid problems!
Just a workaround which helps in Xcode4:
Expand the Objects Panel which resides on the left of the Interface Builder view (there is the tiny arrow at the bottom of the panel).
Drag your UIScrollView from the view hierachy and place it on the top level.
Now you can resize it to access more content (scrolling to that content did not work for me).
When you are done adding child views to the scrollview, you need to resize it back to be smaller or the same size as the parent view.
After your changes you would need to put back the scroll view where it belongs in your hierachy
I typically do the following when I want to (have to) build a long scrolling screen:
Set the size of the View Controller to Freeform
Set the height of the top level View to something very large
Arrange all the controls that I want on the View
Select all the controls
Select Editor->Embed In->Scroll View
Set the size of the View Controller back to normal (typically Inferred)
Well, there are a few different things you can do. There is a list of items in your view you can open on the left of the workspace by clicking the button that looks like a little play button on the toolbar. Double clicking any item selects it so you can use the arrow keys.
The best option is to use the layout panel (typically on the right) and enter position values manualy. Sometimes I will use this to move my scrollview up to where I can see where I'm working then move it back.
I found a solution although you have to use a Table view controller. If you define the table as static, the scroll works in interface builder when the table is bigger than the windows size. Moreover, a standard view can be added to the top and bottom of the table, these views are scrollable as well. The scroll is made once the controller is selected. I hope you find this trick useful.
I know this isn't exactly what you were looking for, but I always just drag the scroll view out of the view controller onto the "pasteboard" where you can resize it at will and see the whole thing.
Once I make my edits I simply resize it to fit it's allotted space in my view and place it back in the view controller.
set the root view to freeform and ~1000 pt height, go through the child views and set them to this height as well(including scroll view), in the viewdidload method set the height to the appropriate size.
I think have decent experience working with iPhone development.
as much I know.. I did set up the delegate..
I have from top to botton
UIView --> UIScrollView--> UITextView
I tried everything... to get the event scrollView to fire the scrollViewDidScroll event.
is anything wrong with the structure..
there not much of the code to post here.
what I am trying to do is.. do something when UITextView is scrolled.
Sorry did not respond... Just wanted to share in case anyone need this...
I used delegate methods of parent i.e. UIView for UIScrollView i.e. Child it worked..
It's hard to say without some code or a screenshot. Is the scroll view actually scrolling? If you set it up in Interface Builder, did you change the size of the scroll view's contentSize in code so that it can actually scroll? Maybe the text view is eating the scroll events; did you try setting the text view's delegate to see if it's firing a scrollViewDidScroll event?
This is probably simple but I do not seem to get it to work. I have a view and inside it I have a scroll view and inside it I have a view with some labels and a button. the height of the text inside the labels changes according to some condition so I need to scroll down to see it. But whenever I try to scroll down it bounce back up without giving me a chance to view the rest of the view.
Basically, I want when I scroll down, the view to remain down as it normally should. Besides I do not see the scroll bar at all when I'm scrolling.
I know I probably do not understand how scroll views work, so I'd appreciate any help to explain to me the behavior of scroll views.
P.S. I built my whole view in a nib file and this specific setup That I mentioned at the beginning is based on a suggestion from one question I read here.
Thanks, Mohsen
you need to set content size of your scroll view
[scrollView setContentSize:CGSizeMake(360,1000)];
you can make the content size dynamic as per your calculation.