CODEWITHSUNDEEP
iosuitableviewdrag-and-dropuicollectionview
Satyam
Satyam

Reputation: 15894

Drag and Drop in UICollectionView that has UITableView

I'm having UICollectionView that scrolls horizontally. Each collection view cell has a table view that scrolls vertically. I want to implement drag and drop of table view cell with in the table view itself as well as between different tableviews within each collection view cell.
Need some tutorial or help to achieve the functionality.

Upvotes: 3

Views: 2241

Answers (3)

funct7
funct7

Reputation: 3601

Quickly whipped up a test project, and as far as I've tested, it works fine.

https://github.com/BridgeTheGap/Trelloesque

The secret is the following two methods:

func convertPointToIndexPath(point: CGPoint) -> (UITableView, NSIndexPath)? {
    if let tableView = [tableView1, tableView2, tableView3].filter({ $0.frame.contains(point) }).first {
        let localPoint = scrollView.convertPoint(point, toView: tableView)
        let lastRowIndex = focus?.0 === tableView ? tableView.numberOfRowsInSection(0) - 1 : tableView.numberOfRowsInSection(0)
        let indexPath = tableView.indexPathForRowAtPoint(localPoint) ?? NSIndexPath(forRow: lastRowIndex, inSection: 0)
        return (tableView, indexPath)
    }

    return nil
}

While not exactly the same, I think it has enough for you to work on.

  • Disclaimer: didn't have time to test it, so may be bug-prone.

Upvotes: 0

Sunil Sharma
Sunil Sharma

Reputation: 2689

You can try these tutorials

https://www.raywenderlich.com/63089/cookbook-moving-table-view-cells-with-a-long-press-gesture http://www.freshconsulting.com/create-drag-and-drop-uitableview-swift/ http://www.andypierz.com/blog/2014/11/9/basic-drag-and-drop-uitableviews-using-swift-and-core-data

http://www.iostute.com/2016/02/how-to-re-order-table-view-cell-by-drag.html

Some helpful Libraries

https://github.com/andreamazz/UIView-draggable
https://github.com/ra1028/RACollectionViewReorderableTripletLayout
https://github.com/lukescott/DraggableCollectionView
https://github.com/grillbiff/DragAndDropTableView

Upvotes: 1

karthik
karthik

Reputation: 621

@Satyam, it may help you to get some idea. trello ios application has their own lib to get those behaviour. 

-> uiViewController    
 -> uiScrollView
   -> uiPageViewController
     -> uiTableViewController
       -> drag and drop behaviour. while dragging, scrollview helps you to get the moving behaviour.

https://www.cocoacontrols.com/controls/icarousel

Upvotes: 0

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