SwiftUI - Display selected value with Single Selected - swift

Question

I want when I finish selecting the language and click the Save button it will return the ContentView page and display the language I have selected. And when I click again, it has to checkmark the language I selected before.
I have successfully displayed the data, but I don't know how to save it when I click the Save button
Here is all my code currently
ContentView
struct ContentView: View {
var body: some View {
NavigationView {
HStack {
NavigationLink(destination:LanguageView() ) {
Text("Language")
Spacer()
Text("I want to show the language here ")
}
}
}
}
}
LanguageView
struct LanguageView: View {
var body: some View {
VStack {
CustomLanguageView()
Button(action: {
})
{
Text("Save")
.foregroundColor(.black)
}
.padding()
Spacer()
}
}
}
struct CustomLanguageView: View {
var language = ["US", "English", "Mexico", "Canada"]
#State var selectedLanguage: String? = nil
var body: some View {
LazyVStack {
ForEach(language, id: \.self) { item in
SelectionCell(language: item, selectedLanguage: self.$selectedLanguage)
.padding(.trailing,40)
Rectangle().fill(Color.gray)
.frame( height: 1,alignment: .bottom)
}
.frame(height:15)
}
}
}
struct SelectionCell: View {
let language: String
#Binding var selectedLanguage: String?
var body: some View {
HStack {
Text(language)
Spacer()
if language == selectedLanguage {
Image(systemName: "checkmark")
.resizable()
.frame(width:20, height: 15)
}
}
.onTapGesture {
self.selectedLanguage = self.language
}
}
}

Answer 1

There are multiple ways to "Save" something but if you are just trying to get it back to the other view you could do something like this that I quickly setup.
struct ContentView: View {
#State var language: String? = ""
var body: some View {
NavigationView {
HStack {
NavigationLink(destination:LanguageView(language: $language)) {
Text("Language")
.padding()
Spacer()
Text(language!)
.padding()
}
}
}
}
}
struct LanguageView: View {
#Binding var language: String?
#State var selectedLanguage: String? = ""
var body: some View {
VStack {
CustomLanguageView(selectedLanguage: $selectedLanguage)
Button(action: {
language = selectedLanguage
})
{
Text("Save")
.foregroundColor(.black)
}
.padding()
Spacer()
}
}
}
struct CustomLanguageView: View {
var language = ["US", "English", "Mexico", "Canada"]
#Binding var selectedLanguage: String?
var body: some View {
LazyVStack {
ForEach(language, id: \.self) { item in
SelectionCell(language: item, selectedLanguage: self.$selectedLanguage)
.padding(.trailing,40)
Rectangle().fill(Color.gray)
.frame( height: 1,alignment: .bottom)
}
.frame(height:15)
}
}
}
struct SelectionCell: View {
let language: String
#Binding var selectedLanguage: String?
var body: some View {
HStack {
Text(language)
Spacer()
if language == selectedLanguage {
Image(systemName: "checkmark")
.resizable()
.frame(width:20, height: 15)
}
}
.onTapGesture {
self.selectedLanguage = self.language
}
}
}
Or if you are actually trying to save it to the device for later use you could use
UserDefaults.standard.setValue(selectedLanguage, forKey: "language")
Then to Retrieve it later do
UserDefaults.standard.value(forKey: "language") as! String