I have added searchable to my SwiftUI List.
But the search TextField isn't showing.
Here is my code:
NavigationView {
List(searchResults, id: \.self) { item in
NavigationLink {
LegendDetailView(item: item)
} label: {
HStack {
Text(item.name).padding(1)
Spacer()
Image(systemName: "chevron.right").imageScale(.small)
}
}
}
}.searchable(text: $searchText)
EDIT(2021/5/29):
I thinks there is a piece of important infomation I forgot to say
This view is a popover
I add searchable to my SwiftUI List
No, you added it to the navigation view. Move it up
NavigationView {
List(searchResults, id: \.self) { item in
NavigationLink {
LegendDetailView(item: item)
} label: {
HStack {
Text(item.name).padding(1)
Spacer()
Image(systemName: "chevron.right").imageScale(.small)
}
}
}.searchable(text: $searchText)
}
Text example
struct TestView: View {
#State private var letters = ["alpha", "beta", "gamma", "delta", "epsilon", "zeta"]
#State private var searchText = ""
var body: some View {
let searchResults = searchText.isEmpty ? letters : letters.filter{$0.localizedCaseInsensitiveContains(searchText)}
NavigationView {
List(searchResults, id: \.self) { item in
NavigationLink {
Text(item)
} label: {
HStack {
Text(item).padding(1)
Spacer()
}
}
}.searchable(text: $searchText)
}
}
}
Related
I am making an app where the first view the users see is a home screen with buttons that takes them to a second view. One of the second views present the user with a list of items. When the user clicks on one of these items the user comes to a detailed view of the item. When the user comes to the detailed view he is unfortunately presented with two toolbar buttons in the corner as can be seen here:
.
I know that one of the solutions is to only have one navigationview and that solves my problem. But I need to have toolbar items in my listview to be able to add more items, sort the list and have the list searchable which I'm not able to do without navigationView. I Have tried using scrollView and NavigationStack but it comes out blank.
Does anyone have an idea how to work with mulitple views, not getting double up "back buttons" on the toolbar and still have other toolbar items?
View one: (Home Screen):
NavigationView {
ZStack {
VStack {
Text(title)
.font(.custom("Glacial Indifference", size: 34, relativeTo: .headline).weight(.bold))
.multilineTextAlignment(.leading)
.foregroundColor(.white)
.tracking(10)
.padding(8)
.background(
Rectangle()
.fill(.gray)
.frame(width: 1000, height: 150)
.ignoresSafeArea()
.opacity(0.5))
Spacer()
}
VStack {
NavigationLink {
MapView()
} label: {
Buttons(str: "Cheese Map")
}
.padding(.bottom, 200)
}
VStack {
NavigationLink {
TabView()
} label: {
Buttons(str: "Cheese List")
}
.padding(.bottom, 400)
}
Second View (list):
NavigationView {
List {
ForEach(items, id: \.id) { item in
NavigationLink {
ItemView(item: item)
} label: {
ListItem(item: item)
}
}
}
.toolbar {
ToolbarItem(placement: .navigationBarLeading) {
Button {
showingAddItem = true
} label: {
Image(systemName: "plus")
Text("Add Item")
.font(.footnote)
.italic()
}
}
}
.toolbar {
ToolbarItem(placement: .navigationBarTrailing) {
Menu("Sort") {
Picker("Filter Options", selection: $selectedSort) {
ForEach(sortOptions, id: \.self) {
value in
Text(value)
.tag(value)
}
}
}
.onChange(of: selectedSort) { _ in
let sortBy = sorts[sortOptions.firstIndex(of: selectedSort)!]
items.sortDescriptors = sortBy.descriptors
}
}
}
.sheet(isPresented: $showingAddItems) {
AddItemsView(items: Items())
}
.navigationTitle("Item List")
.searchable(text: $searchText)
}
}
}
DetailView:
ScrollView {
ZStack {
VStack {
//More code...
Both .toolbar and .searchable find the nearest enclosing NavigationView automatically. You do not need a NavigationView in your list view.
Here's a self-contained demo. It looks like this:
Here's the code:
import SwiftUI
import PlaygroundSupport
struct HomeScreen: View {
var body: some View {
NavigationView {
List {
NavigationLink("Cheese Map") { Text("Map") }
NavigationLink("Cheese List") { ListView() }
}
.navigationTitle("Home Screen")
}
.navigationViewStyle(.stack)
}
}
struct ListView: View {
#State var items = ["Cheddar", "Swiss", "Edam"]
#State var search: String = ""
var filteredItems: [String] {
return items.filter {
search.isEmpty
|| $0.localizedCaseInsensitiveContains(search)
}
}
var body: some View {
List(filteredItems, id: \.self) {
Text($0)
}
.searchable(text: $search)
.toolbar {
ToolbarItem(placement: .navigationBarLeading) {
Button {
withAnimation {
items.append("Gouda")
}
} label: {
Label("Add Item", systemImage: "plus")
}
.disabled(items.contains("Gouda"))
}
}
.toolbar {
ToolbarItem(placement: .navigationBarTrailing) {
Menu("Sort") {
Button("Ascending") {
withAnimation {
items.sort()
}
}
Button("Descending") {
withAnimation {
items.sort()
items.reverse()
}
}
}
}
}
.navigationTitle("Cheese List")
}
}
PlaygroundPage.current.setLiveView(HomeScreen())
I have the following example in SwiftUI:
import SwiftUI
struct DetailView: View {
var element:Int
#Binding var favList:[Int]
var body: some View {
Button(action: {
if !favList.contains(element){
favList.append(element)
}
else{
favList.removeAll(where: {$0 == element})
}
}){
HStack {
Image(systemName: (favList.contains(element)) ? "star.slash" : "star")
Text((favList.contains(element)) ? "Remove from favorites" : "Add to favorites")
}
.frame(maxWidth: 300)
}
}
}
struct MainView: View {
let elements = [1,2,3,4]
#State var favList:[Int] = []
var body: some View {
NavigationView {
List{
if !favList.isEmpty{
Section("Favorits"){
ForEach(elements, id: \.self){element in
if favList.contains(element){
NavigationLink(destination: DetailView(element: element, favList: $favList)) {
Text("\(element)")
}
}
}
}
}
Section("All elements"){
ForEach(elements, id: \.self){element in
if !favList.contains(element){
NavigationLink(destination: DetailView(element: element, favList: $favList)) {
Text("\(element)")
}
}
}
}
}
}
}
}
If I change the favList in the DetailView the view gets automatically dismissed. I guess this because the List structure changes.
Am I doing something wrong? Is this the intended behavior? How can I avoid this?
Best regards
i tried with this, it's the same code just fixing the section header. using the fav button in the view doesn't dismiss the view
import SwiftUI
struct DetailView: View {
var element:Int
#Binding var favList:[Int]
var body: some View {
Button(action: {
if !favList.contains(element){
favList.append(element)
}
else{
favList.removeAll(where: {$0 == element})
}
}){
HStack {
Image(systemName: (favList.contains(element)) ? "star.slash" : "star")
Text((favList.contains(element)) ? "Remove from favorites" : "Add to favorites")
}
.frame(maxWidth: 300)
}
}
}
struct MainView: View {
let elements = [1,2,3,4]
#State var favList:[Int] = []
var body: some View {
NavigationView {
List{
if !favList.isEmpty{
Section(header:Text("Favorits")){
ForEach(elements, id: \.self){element in
if favList.contains(element){
NavigationLink(destination: DetailView(element: element, favList: $favList)) {
Text("\(element)")
}
}
}
}
}
Section(header:Text("Favorits")){
ForEach(elements, id: \.self){element in
if !favList.contains(element){
NavigationLink(destination: DetailView(element: element, favList: $favList)) {
Text("\(element)")
}
}
}
}
}
}
}
}
Tried it on xcode 12,5 with iOS 14 as target
I'm implementing Form and Picker with SwiftUI. There is a problem that it automatically navigates back to Form screen when I select a Picker option, how to keep it stay in selection screen?
Code:
struct ContentView: View {
#State private var selectedStrength = "Mild"
let strengths = ["Mild", "Medium", "Mature"]
var body: some View {
NavigationView {
Form {
Section {
Picker("Strength", selection: $selectedStrength) {
ForEach(strengths, id: \.self) {
Text($0)
}
}
}
}
.navigationTitle("Select your cheese")
}
}
}
Actual:
Expect: (sample from Iphone Settings)
You may have to make a custom view that mimics what the picker looks like:
struct ContentView: View {
let strengths = ["Mild", "Medium", "Mature"]
#State private var selectedStrength = "Mild"
var body: some View {
NavigationView {
Form {
Section {
NavigationLink(destination: CheesePickerView(strengths: strengths, selectedStrength: $selectedStrength)) {
HStack {
Text("Strength")
Spacer()
Text(selectedStrength)
.foregroundColor(.gray)
}
}
}
}
.navigationTitle("Select your cheese")
}
}
}
struct CheesePickerView: View {
let strengths: [String]
#Binding var selectedStrength: String
var body: some View {
Form {
Section {
ForEach(0..<strengths.count){ index in
HStack {
Button(action: {
selectedStrength = strengths[index]
}) {
HStack{
Text(strengths[index])
.foregroundColor(.black)
Spacer()
if selectedStrength == strengths[index] {
Image(systemName: "checkmark")
.foregroundColor(.blue)
}
}
}.buttonStyle(BorderlessButtonStyle())
}
}
}
}
}
}
On the track to learn more and more about SwiftUI. I come accross some weird behaviors.
I have a simple view called Modal. I am using a Picker in it and set a title in the navigation bar to go in the detail view.
That works fine. The problem starts when I add a button in the nav bar.
It end up looking like this
Without the + button
With the + button
And the code is the following:
ContentView.swift
import SwiftUI
struct ContentView: View {
#State var isShowing = false
var body: some View {
VStack(content: {
Button("Modal") {
isShowing = true
}
})
.sheet(isPresented: $isShowing, content: content)
}
#ViewBuilder
func content() -> some View {
Modal()
}
}
Modal.swift
import SwiftUI
import Combine
struct Modal: View {
#State var selection: String = ""
#State var list: [String] = ["1", "2", "3", "4", "5", "6"]
var body: some View {
NavigationView(content: {
Form(content: {
self.type()
})
.navigationBarTitle("Modal", displayMode: .inline)
})
}
}
private extension Modal {
func type() -> some View {
Section(content: {
Picker(selection: $selection, label: Text("Type").bold()) {
ForEach(list, id: \.self) { item in
Text(item)
.tag(UUID())
}
.navigationBarTitle("Select")
.navigationBarItems(trailing: button())
}
})
}
func button() -> some View {
HStack(alignment: .center, content: {
Button(action: {
// Action
}) {
Image(systemName: "plus")
}
})
}
}
This is because .navigationBarItems modifier generates flat view from dynamic ForEach views, attach instead it to one view inside ForEach, like
Section(content: {
Picker(selection: $selection, label: Text("Type").bold()) {
ForEach(list, id: \.self) { item in
if item == list.last {
Text(item)
.navigationBarTitle("Select")
.navigationBarItems(trailing: button())
.tag(UUID())
} else {
Text(item)
.tag(UUID())
}
}
}
})
I'm new in SwiftUI. I would like on the top left in the corner a Button next to the Picker. But when I place the Button, the Picker moves to the right and the Button is to nearly on the edge. How can I place the Button flush over the Headline and the Picker perfectly in the middle from iPhone Nodge?
Before:
After:
import SwiftUI
import Combine
struct ContentView: View {
#State var Selection = UserDefaults.standard.integer(forKey: "Picker")
#State var Detail = false
var body: some View {
VStack {
HStack {
Button(action: {
self.Detail.toggle()
}) {
Text("click")
}.sheet(isPresented: $Detail) {
SettingView(showSheetView: self.$Detail, selection: $Selection)
}
Picker("", selection: $Selection) {
Text("Selection1").tag(0)
Text("Selection2").tag(1)
}
.pickerStyle(SegmentedPickerStyle()).padding(.horizontal, 89)
.onReceive(Just(Selection)) {
UserDefaults.standard.set($0, forKey: "Picker")
}
}
PageOne()
}
}
}
struct PageOne: View {
var body: some View {
NavigationView {
VStack {
Text("some Text")
}.navigationTitle("Headline")
}
}
}
struct SettingView: View {
#Binding var showSheetView: Bool
#Binding var selection: Int
var body: some View {
NavigationView {
Text("Test")
.navigationBarTitle(Text("Select something"))
.navigationBarItems(trailing: Button(action: {
self.showSheetView = false
}) {
Text("Ok")
.bold()
})
}
}
}
you can use a ZStack to show your Button and Picker without pushing them.
something like this:
var body: some View {
VStack {
ZStack {
HStack {
Button(action: {
self.Detail.toggle()
}) {
Text("click")
}.sheet(isPresented: $Detail) {
SettingView(showSheetView: self.$Detail, selection: $Selection)
}
Spacer()
}
HStack {
Spacer()
Picker("", selection: $Selection) {
Text("Selection1").tag(0)
Text("Selection2").tag(1)
}
.pickerStyle(SegmentedPickerStyle()).padding(.horizontal, 89)
.onReceive(Just(Selection)) {
UserDefaults.standard.set($0, forKey: "Picker")
}
Spacer()
}
}
PageOne()
}
}