SwiftUI: How to interstellare array of enums?-CodePudding

I have an array of enums where each enum either contains an image or video. I would like to loop through the array and get the values inside each enum. If the enum contains an image I would like get that value and if it contains a video then get that value.

So how do I loop through an array if enums?

This is my code:

import UIKit
import AVFoundation

enum ContentSource {
    case image(UIImage)
    case video(AVPlayer)
}

var post : [ContentSource] = []

CodePudding user response：

You have to have a switch to figure out what type it is in the loop.

var posts : [ContentSource] = []

for post in posts {
    switch post {
    case .image(let uIImage):
        print("UIImage")
    case .video(let aVPlayer):
        print("UIImage")
    }
}

CodePudding user response：

you could try something like this:

enum ContentSource: Hashable {
    case image(UIImage)
    case video(AVPlayer)
}

struct ContentView: View {
    @State var posts : [ContentSource] = []
    
    var body: some View {
        List(posts, id: \.self) { item in
            switch(item) {
            case .image(let img):
                Text(img.description) // show image
            case .video(let avPlayer):
                Text(avPlayer.description)  // play video
            }
        }
        .onAppear {
            let img = UIImage(systemName: "globe")!
            let av = AVPlayer()
            posts = [.image(img), .video(av)]
        }
    }
}

CodePudding user response：

Can you try this , you can get the associated values and do as you wish with them

enum ContentSource {
    case image(UIImage)
    case video(AVPlayer)
}

var post :[ContentSource] = []

let testContent = ContentSource.video(AVPlayer())

switch testContent {
case .image(let img):
    print("i got img")
case .video(let video):
    print("i got video")
}