How to generate fixed number of views from json API in SwiftUI? - ios

Question

So I am learning how to use SwiftUI with a json api. I am currently generating views through a list and a ForEach Loop. I am wondering how I can make it so that it only generates the first, say 10 elements in the posts array, instead of generating the entire list from the api. Basically I want to use RandomElement() to display 10 random posts from the entire array. I am just beginning here and learning so any help woul dbe appreicated.
Below is the code for my main view that is displaying the list
import SwiftUI
struct postList: View {
//state variable of the posts
#State var posts: [Post] = []
var array = [Post]()
var body: some View {
List {
ForEach(posts) { post in
VStack(alignment: .leading) {
Text(post.title)
.font(.headline)
Text(post.body)
.font(.callout)
}
.padding()
}
}
.onAppear() {
Api().getPosts { (posts) in
self.posts = posts
}
}
}
}
struct postList_Previews: PreviewProvider {
static var previews: some View {
postList()
}
}
Down here is the Data file I use to retrieve the json data
import SwiftUI
struct Post: Codable, Identifiable {
let id = UUID()
var title: String
var body: String
}
class Api {
func getPosts(completion: #escaping ([Post]) -> ()) {
guard let url = URL(string: "http://jsonplaceholder.typicode.com/posts") else { return }
URLSession.shared.dataTask(with: url) { (data, _, _) in
let posts = try! JSONDecoder().decode([Post].self, from: data!)
DispatchQueue.main.async {
completion(posts)
}
}
.resume()
}
}