I am getting the same compiler error using Xcode 13.2.1. The offending line of code is the NavigationLink, located at the bottom of the following, minimal reproducible sample. If I comment out that one line, the error goes away and the compile is almost instantaneous.
Any suggestions? I've already tried using Strings instead of Ints for the tag/selection parameters. Same error.
import SwiftUI
import Foundation
enum MarkerType: Double {
case unlabeled = -99
case end = -4
case start = -3
case stop = -2
case blank = -1
case image = 1
}
class LabeledImage {
let image: Image
let marker: Double
var appeared = false
init(image: Image, marker: Double) {
self.image = image
self.marker = marker
}
}
struct SlideShow {
private let maxImages: Int = 10000
var images = [LabeledImage]()
var labels = [String]()
var totalImages: Int { return self.images.count }
private var fromFolder: URL
init(fromURL: URL = Bundle.main.bundleURL.appendingPathComponent("Contents/Resources/DefaultImages")) {
self.fromFolder = fromURL
}
}
class AppState: ObservableObject {
static var docDir: URL = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
@Published var isMainMenuActive = false
@Published var loadFolder: URL = Bundle.main.bundleURL.appendingPathComponent("Contents/Resources/DefaultImages")
@Published var intervalSeconds: Double = 0.6
var saveFolder = URL(fileURLWithPath: "BCILab", relativeTo: docDir)
var labels = [String]()
var totalImages: Int = 0
var saveIndex: Int = 0
}
struct minsample: View {
@StateObject private var appState = AppState()
@State private var slideshow = SlideShow()
@State private var selection: Int = 0
private func insertAppears(_ marker: Double) {
let nmarker = marker + 100.0
}
var body: some View {
NavigationView {
ForEach(0..<slideshow.images.count-1, id: \.self) { i in
let thisImage = slideshow.images[i].image
.resizable()
.aspectRatio(contentMode: .fit)
.onAppear(perform: { insertAppears(slideshow.images[i].marker) })
let nextImage = slideshow.images[i+1].image
.resizable()
.aspectRatio(contentMode: .fit)
.onAppear(perform: { insertAppears(slideshow.images[i+1].marker) })
NavigationLink(destination: nextImage, tag: i, selection: self.$selection) { thisImage }
}
}
}
}
