How to loop HashMap style in the View in SWIFTUI - ios

Question

var someProtocol = [SurveyItems : [Surveys]]()
sectionLabels.forEach{ a in
var finalSurveys = [Surveys]()
surveys.forEach{ b in
if a.groupHeader == b.group_survey {
finalSurveys.append(b)
}
someProtocol[a] = finalSurveys
}
}
I wanted to use that someProtocol to dynamically display the label section and the surveys under that section.
for (Surveys, SurveyItems) in someProtocol {
Text(Surveys.sectionTitle)
for survey in SurveyItems {
Text(survey.label)
}
}
I tried ViewBuider but getting some error.

Answer 1

To loop and display your someProtocol dictionary in a View, try this example code:
Adjust the code for your own purpose. Note that in a SwiftUI View you need to use a ForEach not the "normal" swift for x in ... to loop over a sequence.
struct ContentView: View {
#State var someProtocol = [SurveyItems : [Surveys]]()
var body: some View {
List(Array(someProtocol.keys), id: \.self) { key in
VStack {
if let surveys = someProtocol[key] {
Text(key.title).foregroundColor(.red)
ForEach(surveys, id: \.self) { survey in
Text("survey \(survey.label)")
}
}
}
}
.onAppear {
// for testing
someProtocol[SurveyItems(id: "1", number: 1, title: "title-1")] = [Surveys(id: "s1", label: "label-1"), Surveys(id: "s2", label: "label-2")]
someProtocol[SurveyItems(id: "2", number: 2, title: "title-2")] = [Surveys(id: "s3", label: "label-3")]
}
}
}
struct SurveyItems: Identifiable, Hashable {
let id: String
let number: Int
var title: String
}
struct Surveys: Identifiable, Hashable {
let id: String
let label: String
}