How to select an item from a search file and place in textfield in another file - search

Question

Using SwiftUI - Xcode 14.2 - iOS 16.0
I have tried different search tutorials to create a search file for my project but am unable to find out how to select the item in the search file and place that selected item in a textfield in another file. I have searched this site for other posts, i tried searching through Google, YouTube, etc...
In File 1, I have a textfield that that has a prompt 'start typing' and when selected, it directs you to the Search file to select the item you want, so it can be placed in place of the prompt.
File 1 (where the textfield is needed to paste the selected item):
VStack {
NavigationLink(destination: NameSearch()) {
TextField("Name", text: .constant(""), prompt: Text(" Start typing ")
.foregroundColor(.blue))
.multilineTextAlignment(.leading)
.padding()
}
}
Once I click on the 'start typing' prompt, it navigates to NameSearch.swift file, as seen below.
NameSearch.swift:
import SwiftUI
struct NameSearch: View {
let name = [
"Jane", "George", "Sam", "Henry", "Sally", "Liz", "John"
]
#State private var searchText = ""
var body: some View {
NavigationStack {
VStack {
// Search view
SearchBarView(searchText: $searchText)
List {
// Filtered list of names
ForEach(name.filter{$0.hasPrefix(searchText) || searchText == ""}, id:\.self) {
searchText in Text(searchText)
}
}
.navigationBarTitle(Text("Search Name"))
.resignKeyboardOnDragGesture()
}
}
}
}
struct NameSearch_Previews: PreviewProvider {
static var previews: some View {
Group {
NameSearch()
.environment(\.colorScheme, .light)
NameSearch()
.environment(\.colorScheme, .dark)
}
}
}
extension UIApplication {
func endEditing(_ force: Bool) {
self.windows
.filter{$0.isKeyWindow}
.first?
.endEditing(force)
}
}
struct ResignKeyboardOnDragGesture: ViewModifier {
var gesture = DragGesture().onChanged{_ in
UIApplication.shared.endEditing(true)
}
func body(content: Content) -> some View {
content.gesture(gesture)
}
}
extension View {
func resignKeyboardOnDragGesture() -> some View {
modifier(ResignKeyboardOnDragGesture())
}
}
struct SearchBarView: View {
#Binding var searchText: String
#State private var showCancelButton: Bool = false
var onCommit: () ->Void = {print("onCommit")}
var body: some View {
HStack {
HStack {
Image(systemName: "magnifyingglass")
// Search text field
ZStack (alignment: .leading) {
if searchText.isEmpty { // Separate text for placeholder to give it the proper color
Text("Search")
}
TextField("", text: $searchText, onEditingChanged: { isEditing in
self.showCancelButton = true
}, onCommit: onCommit).foregroundColor(.primary)
}
// Clear button
Button(action: {
self.searchText = ""
}) {
Image(systemName: "xmark.circle.fill").opacity(searchText == "" ? 0 : 1)
}
}
.padding(EdgeInsets(top: 8, leading: 6, bottom: 8, trailing: 6))
.foregroundColor(.secondary) // For magnifying glass and placeholder test
.background(Color(.tertiarySystemFill))
.cornerRadius(10.0)
if showCancelButton {
// Cancel button
Button("Cancel") {
UIApplication.shared.endEditing(true) // this must be placed before the other commands here
self.searchText = ""
self.showCancelButton = false
}
.foregroundColor(Color(.systemBlue))
}
}
.padding(.horizontal)
.navigationBarHidden(showCancelButton)
}
}
Question 1: How do I hide all the names from showing in the list so that I just see the search bar and the cancel button and an empty list?
Question 2: Once I type the name I am looking for, it should pop up and I want to select name - how can I do this?
once I type the name in search bar, it appears in the empty list
I select that name
it then takes me back to File 1
replaces the 'start typing' prompt with the name i just selected in the Search file.
Question 3: I have noticed in the Search file, I am getting a warning with the following code. How can I resolve it?
extension UIApplication {
func endEditing(_ force: Bool) {
self.windows
.filter{$0.isKeyWindow}
.first?
.endEditing(force)
}
}
The warning that appears is:
'windows' was deprecated in iOS 15.0: Use UIWindowScene.windows on a
relevant window scene instead

Answer 1

Firstly, thank you for providing a working example of your code.
As you're building for iOS 15+, you should probably be using the .searchable modifier rather than rolling your own.
The 2021 WWDC video introducing this feature is here https://developer.apple.com/wwdc21/10176
Some new features from 2022 here: https://developer.apple.com/wwdc22/10052