Hi, I just wrote a SwiftUI app that reads in the Media Library at the start of the app. This is a somewhat lengthy task and hence I wanted to display a progress bar on the LaunchScreen. I found the necessary elements and put a Progress Bar object into the launch screen View Controller but I don't seem to be able to update it with actual progress.

One thing I noticed is that the circle is empty at the beginning of the line of where I define the @IBOutlet but this is how it is created on control drag from my LauchScreen into the code.

Here is my code:

import UIKit import MediaPlayer import SwiftUI import Foundation

class Library { var artists : [Artist] = [] @IBOutlet var progressBar: UIProgressView! @EnvironmentObject var settings : UserSettings var counter : Float = 0 var total : Float = 0

init() {
    let filter : Set<MPMediaPropertyPredicate> = [MPMediaPropertyPredicate(value: MPMediaType.music.rawValue, forProperty: MPMediaItemPropertyMediaType)]
    let mediaQuery = MPMediaQuery(filterPredicates: filter )
    var artistsInCollection : [Artist] = []

    progressBar = UIProgressView(progressViewStyle: .default)

    total = Float(mediaQuery.items?.count ?? 0)

    for item in mediaQuery.items! {

        // there is some code here which is irrelevant to my question.

        counter += 1
        print(counter)
        progressBar.setProgress(counter/total, animated: true)
     }
     self.artists = artistsInCollection

}

}