I want to implement a UICollectionView with multiple sections which each section scrolls horizontally and independently like the attached image
I suggest you to use UITableView with customized UITableViewCells with UIScrollView as subview on its contentViews.
There are many samples, for example here
You can use multiple UICollectionViews in table cells. The tableView will scrolls vertically and The collection views can be configured to scroll horizontally by setting particular set of properties which will restrict them to scroll vertically, and they will only scroll horizontally. One constraint to consider is it is much more difficult to do animations that need to move from one table cell to another and you can't use a neat single change of collection view layout to animate all the items in your table view. But if these constraints aren't a problem then this is a relatively easy solution. I also tried it once. It worked for me. Hope that it works for you as well.
Related
I want to implement a cross layout just like Wallapop app does on its main feed.
As you can see, it's composed of two groups of cells (Featured items, Items near you). The first group is scrolled horizontally, and the second group is scrolled vertically.
The first UIKit component that came to my mind to make that kind of layout is UICollectionView, having one section for each scrolling direction. Unfortunately UICollectionView current implementation is very limited, forcing the scroll in one direction only, no matter how many sections you declare.
So I wanted to give it a shot with vanilla UIKit components and that's what I got;
The problem with my solution is that the vertical UICollectionViewController (highlighted in green) is scrolling on its own and not pushing the horizontal UICollectionViewControllers upward.
I've also thought about using a single UICollectionViewController for the vertical cells, and setting an UIStackView with horizontal UICollectionViewControllers as needed for the horizontal cells, but it's a messy solution and doesn't scale very well, I even couldn't set a title for the vertical cells section If I opt this way.
Ideally, I want each group of scrollable cells to be it's own UIViewController in order to have a clear separation of concerns and modularity.
Is there a better way to implement a layout like the one I want with vanilla UIKit components?
The easiest and the most stable solution is to use the following view hierarchy:
Use one UICollectionView(1) instance
Horizontally scrollable sections can be implemented as Screen width UICollectionViewCell containing horizontally scrollable UICollectionView
Vertically scrollable sections should be just a regular section of UICollectionView(1)
Pros
UIKit only
Nothing extraordinary is needed - just a UICollectionViewFlowLayout everywhere
Cells are the same for Horizontally scrollable cells and Vertically scrollable cells
Good scalability and separation of concerns. Independent behaviors of Horizontal and Vertical sections each of which can have multiple data sources.
Cons
Horizontally scrollable sections should have fixed height. Otherwise scrolling behavior will be harder to maintain.
Arrow on the image means Uses!
You could use following way:
A collection view with two cell in it. First cell is for featured items and the second cell is for items near you. The first cell will cover full width and height required by your design.
For scalability use a Container View which embed a CollectionViewController which will responsible for showing featured item. This embedded CollectionViewController will scroll horizontally.
Items near you are straight forward direct cell of the initial collection view controller.
So your implementation of featured horizontal collection view remain in the embedded CollectionViewController and the items for cell remains in the primary CollectionViewController which also contain a loose connection (embedding into a container view) to the featured item.
It also does not suffer from the problem like scrolling vertically the items for sale does not scroll up the featured items.
Here is a screenshot which depicts the idea
here is my design structure
I was wondering about creating a horizontal and vertical scrolling tableview. I have tried a tableview inside a scrollview but I failed miserably. What to do?
I use swift4 but I wanted to do in storyboard.
The nature of content is like an excel sheet with lots of horizontal and vertical scrolling rows and columns of data.
Actually you can do this using a hack. Put the tableView inside a scrollView. Then you should give a dynamic width to the tableView by specifying a width in storyboard for tableView or any child view of that scrollView(So we get the horizontal scrolling).You have to adjust some constraints depending on your requirement
Mine worked fine but as many users have said try a collection View if its easy
Note. There is a default scrollView within a tableView, So adjust your height of tableView in a way so the scrollView of tableView work and not the parent scrollView, while scrolling from top to bottom
Instead of using TableView try using collection view, there you can use horizontal and vertical scrolling using storyboard?
Try to use collectionview instead of tableview.
If your requirement demands use of tableview anyhow, then you can use tableview within scrollview.
In tableview within scrollview approach, you need to distinguish your parent scrollview as well as tableview's scrollview. Try to differentiate parent scrollview and tableview's scrollview with different tags. Because both scrollview will call delegate methods of viewcontroller, if implemented. Just check tag of scrollview in all delegate methods of scrollview and perform action accordingly.
As per my understaing you want a view which you want vertical scroll view and horizontal inside it.
So here my suggestion is to use UITABLEVIEW for vertical scrolling and UICOLLECTIONVIEW for horizontal scrolling inside tableview
Both will work fine
I need to horizontally scroll through a list of thumbnails at the bottom of the screen that shows all the user's recently taken photos / videos.
I created a UIScrollView with a UITableview inside of it.
Is this the correct approach because I can't seem to find an override method in its superclass for scrolling direction?
Most of the topics I can find online deals with putting a UIscrollview inside a TableCell, which will not work for my specific application?
The hierarchy is:
View > Scroll View > Table View > Table Cel > Content > PhotoThumbnail
Below is a screenshot of what I'm trying to do:
I am not really sure why do you want to use UITableView for horizontal scrolling which lay out there cells in vertical manner. If you want horizontal scrolling I would recommend using UICollectionView where cells can be added horizontally or vertically or both.
Still if you want tableview to be scrollable in horizontal direction I would suggest you to check this project to get inspiration or using it.
https://github.com/alekseyn/EasyTableView
Instead of using UITableView you can use UICollectionView to achieve the desired result i.e, horizontally scrollable cells with imageView and other elements that you need.
I would like to construct a view controller where one section of the view controller would be still and one section scrollable.
Both sections have headers where as well, one is still and one is moving along with the content in the section.
I do not want the cells in the section to be scrolled separately. All cells should move at the same time along with the header.
I have added an image to make my point little more clearer.
Use UICollection View for both view and disable scrolling for one view and enable scrolling for another view
you can probably add to your UIViewController view a UITableView on the left with fixed size (for example 150px) and vertical scroll disabled and a UICollectionView with horizontal flow and ,if needed a, with custom UICollectionViewLayout (but i think that you just need the classic UICollectionViewFlowLayout) for the right part that fits the remaining space.
Here you can find the component's documentation:
https://developer.apple.com/reference/uikit/uicollectionview
https://developer.apple.com/reference/uikit/uitableview
If you look at the Featured tab of the Apple App Store app on an iPhone 6, there is a unique UI layout that I can't figure out how to replicate.
At the very top there is a navigationBar. Below this there is a UIScrollView that animates through a number of featured items. Below this is what appears to be a UITableView with a number of custom programmed cells.
My first guess was that the UIScrollView at the top was added to a custom cell at the top of a UITableView. If you swipe up the UIScrollView moves with the objects below like it is a cell. You can see that the vertical scroll indicator starts at the top of the UIScrollView.
The part that is unique is that if you swipe down, the objects below the UIScrollView move down like a UITableView and the UIScrollView stays in place. This means that the UIScrollView is not a custom cell at the top of a UITableView.
I tried making this work a number of different ways but I can replicate this. Does anyone know how this can be done?
You can use a tableview header,the header is a scrollview
If you scroll tableview up,just use tableview default behavior,the header will scroll up.
If you scroll down,use UIScrollViewDelegate to calculate the tableview header new frame,and adjust it.So it remain at top
Not sure if I got you correctly, you may use UICollectionView as vertical scroll. Then, you create a custom UICollectionViewCell, each with horizontal scroll.
I haven't tried it though but done something similar to this. Hope you find a way!