Question

我正在尝试将字符串从数组传递到Text（），但是只能通过首先将其传递通过列表才能使它起作用吗？我已经尝试过class.struct.item或struct.item等的每种组合，请让我知道如何将其直接传递给Text（）以便在其他视图中使用。

import SwiftUI

struct WorkoutView: View {

    @EnvironmentObject var workoutElements: WorkoutElements
    @State private var newWorkout = WorkoutElement(redWorkout: "")

    var body: some View {
        NavigationView {
            List(workoutElements.workouts) { item in
                VStack {
                    Text(item.redWorkout)
                }
            }

    }
    .onAppear {
        // MARK: fetch from CloudKit
        WorkoutFetcher.fetch { (result) in
            switch result {
            case .success(let newWorkout):
                self.workoutElements.workouts.append(newWorkout)
                print("succesfully fetched Item")
            case .failure(let err):
                print(err.localizedDescription)
            }
        }
    }
 }
}
struct WorkoutView_Previews: PreviewProvider {
    static var previews: some View {
        WorkoutView()
    }
}

// this works for a list
//List(workoutElements.workouts) { item in
    //VStack {
        //Text(item.redWorkout)
    //}
//}
// but this doesn't work for Text()
// Text(workoutElements.workouts.redworkouts)
// Text(workouts.redworkouts)
//etc

Answer 1

如果您只想将它们结合在一起，可以如下所示（据我所知，您的模型）

Text("\(workoutElements.workouts.reduce("") { $0 + $1.redWorkout })")

如果需要任何分隔符，则只需替换为

$0 + $1.redWorkout + ". "

如何将CloudKit数据直接传递到Text（）而不是列表中

1 个答案: