Array Sorting - Swift How Can Sort A-Z [duplicate]

Question

I have an array of pdf files (see attached screenshot) that I need to sort alphabetically. Here is the code that generates the array, can anybody suggest changes to have the array sorted?

import UIKit

var pdfsArray = [String]()

class PDFListViewController: UITableViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let fm = FileManager.default
        
        let path = Bundle.main.resourcePath!

        let items = try! fm.contentsOfDirectory(atPath: path)
        
        for item in items {
            if item.hasSuffix(".pdf") {
               
                pdfsArray.append(item.uppercased())
                
            }
            let sortedFiles = pdfsArray.sorted()
             pdfsArray = sortedFiles
        }

enter image description here

You shouldn't declare your variables at global scope. Search how to pass your data from one view controller to another. — Leo Dabus
– Leo Dabus, Commented May 28, 2021 at 19:01

Schottky · Accepted Answer · 2021-05-28 09:15:24Z

0

Simple enough, you can just call swift's sort (or sorted) function and provide the sort-function to sort by numeric values:

var array = ["Part 45", "Part 1", "Part 10", "Part 20", "Part 100", "Part 2"]
array.sort { st1, st2 in
    st1.compare(st2, options: .numeric) == .orderedAscending
}

answered May 28, 2021 at 9:15

Schottky

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5 Comments

Sky Cruzer Over a year ago

How can I display just the file names without the pdf extension in the array?

Larme Over a year ago

Prefer using URL at top level instead of path String and you'll be able to use deletingPathExension() ?

Leo Dabus Over a year ago

@SkyCruzer using URL resourceValues's method and get localizedName value. If you want to hide the extension you can set the url resourceValue hasExtensionHidden to true

Leo Dabus Over a year ago

@SkyCruzer Btw when sorting files to display it to the user like the finder does, you should use the diacritic and case insensitive localizedStandardCompare method. This method should be used whenever file names or other strings are presented in lists and tables where Finder-like sorting is appropriate. The exact sorting behavior of this method is different under different locales and may be changed in future releases. This method uses the current locale.

Sky Cruzer Over a year ago

Thank you so much all. I am new in this world of app development and I appreciate all your responses. Great working with you all.

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Array Sorting - Swift How Can Sort A-Z [duplicate]

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