Reorder

Introduce

UITableView	UICollectionView	MultipleSection

Requirements

Reorder written in Swift 5.0. Compatible with iOS 9.0+

Installation

Cocoapods

Reorder is available through CocoaPods. To install it, simply add the following line to your Podfile:

pod 'Reorder'

Usage

UITableView

class TableViewController: UIViewController {
    let tableView = UITableView(frame: .zero, style: .plain)
    var list = [[Int]]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView.delegate = self
        self.tableView.dataSource = self
        self.tableView.reorder.delegate = self
    }
}

// MARK: TableViewReorderDelegate
extension TableViewController: TableViewReorderDelegate {
    var reorderSuperview: UIView {
        return self.navigationController?.view ?? UIView()
    }

    func tableViewReorder(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
        if sourceIndexPath.section == destinationIndexPath.section { // Row
            self.list[sourceIndexPath.section].swapAt(sourceIndexPath.row, destinationIndexPath.row)
        } else { // MultipleSection
            let sourceItem = self.list[sourceIndexPath.section][sourceIndexPath.row]
            self.list[sourceIndexPath.section].remove(at: sourceIndexPath.row)
            self.list[destinationIndexPath.section].insert(sourceItem, at: destinationIndexPath.row)
        }
    }

    func tableViewReorder(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
        return self.list[indexPath.section][indexPath.row].canMove
    }
}

UICollectionView

class CollectionViewController: UIViewController {
    let collectionView = UICollectionView(frame: .zero, collectionViewLayout: Layout())
    var list = [[Int]]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.collectionView.delegate = self
        self.collectionView.dataSource = self
        self.collectionView.reorder.delegate = self
    }
}

// MARK: CollectionViewReorderDelegate
extension MultipleSectionCollectionViewExampleViewController: CollectionViewReorderDelegate {
    var reorderSuperview: UIView {
        return self.navigationController?.view ?? UIView()
    }

    func collectionViewReorder(_ collectionView: UICollectionView, moveItemAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
        if sourceIndexPath.section == destinationIndexPath.section { // Item
            let item = self.list[sourceIndexPath.section][sourceIndexPath.item]
            self.list[sourceIndexPath.section].remove(at: sourceIndexPath.item)
            self.list[sourceIndexPath.section].insert(item, at: destinationIndexPath.item)
        } else { // MultipleSection
            let sourceItem = self.list[sourceIndexPath.section][sourceIndexPath.row]
            self.list[sourceIndexPath.section].remove(at: sourceIndexPath.row)
            self.list[destinationIndexPath.section].insert(sourceItem, at: destinationIndexPath.row)
        }
    }
}

Move Auto Scroll

self.tableView.reorder.scrollFrame = CGRect(x: 0, y: 88, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height - 88)
self.collectionView.reorder.scrollFrame = CGRect(x: 0, y: 88, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height - 88)

Can't Move

// MARK: TableViewReorderDelegate
extension ExampleViewController: TableViewReorderDelegate {
    func tableViewReorder(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
        return self.list[indexPath.row].canMove
    }
}

Property

Scale

Snapshot view size on cell touch

enum Scale {
    case custom(CGFloat)
    case none
    case small
    case medium
    case large
}

OverlapBehaviour

The amount of overlap with other cells when moving a cell

public enum OverlapBehaviour {
    case oneThird
    case half
    case twoThirds
}

Delegate

protocol ReorderDelegate: class {
    var reorderSuperview: UIView { get }
    func reorderBegan()
    func reorderChanged()
    func reorderEnded()
}

protocol CollectionViewReorderDelegate: ReorderDelegate {
    func collectionViewReorder(_ collectionView: UICollectionView, moveItemAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath)
    func collectionViewReorder(_ collectionView: UICollectionView, canMoveItemAt indexPath: IndexPath) -> Bool
}

protocol TableViewReorderDelegate: ReorderDelegate {
    func tableViewReorder(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath)
    func tableViewReorder(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool
}

Protocol

Select the view for which you want to create a snapshop. Is optional. If you don't adopt ReorderCell, make the contentView a snapshot.

class TableViewCell: UITableViewCell, ReorderCell {
    private let reorderView = UIView()

    var reorderSnapshotView: UIView {
        return self.reorderView
    }
}

Author

pikachu987, pikachu77769@gmail.com

License

Reorder is available under the MIT license. See the LICENSE file for more info.