Swift: Copying oldArray[][] to newArray[][] causes error (Type 'Any' has no subscript member)

Question

Using Swift for my collectionView app. I'm reading a plist file to display the info in the arrays.

This is the code to read the plist which creates an array called sections[section #][item #] which lets me access items inside the arrays of the root.

var Items = [Any]()

let url = Bundle.main.url(forResource:"items", withExtension: "plist")!
    do {
        let data = try Data(contentsOf:url)
        let sections = try PropertyListSerialization.propertyList(from: data, format: nil) as! [[Any]]

        for (index, section) in sections.enumerated() {
            //print("section ", index)
            for item in section {
                //print(item)
            }
        }
        print("specific item: - \(sections[1][0])") // (Section[] Item[])
        print("section count: - \(sections.count)")

        Items = sections

    } catch {
        print("This error must never occur", error)
    }

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

    switch checkGroupChoice {
    case 0:
        print("From: Items")

        print("specific item 2: - \(Items[0][1])")

        return Items.count

I created var Items = [Any]() to transfer everything from sections[][] to the array Items so I can use it as a global array for my collectionsView but I get an error.

Type 'Any' has no subscript members

on the line print("specific item 2: - \(Items[0][1])")

How do I successfully transfer sections[][] to Items? I'm sure I'm not creating the array correctly. Thank you

Answer 1

Items is a ONE dimensional array.. you are trying to index it as a 2D array.. Change it to:

var Items = [[Any]]()

Now you can assign to it and append to it and index it as a 2D array. Each dimension requires a matching set of square brackets..

Example:

1D array:  [Any]()
2D array:  [[Any]]()
3D array:  [[[Any]]]()