So I built an app where you can add your personal expenses and it works fine but I added a loginView with faceID and when you login with that, it hides the second view's add and edit button, besides the search bar where you can filter the expenses
Here's the code that worked before i added the loginView
struct MainView: View {
#StateObject var PEviewModel = PEViewModel()
var body: some View {
// NavigationStack {
TabView {
PersonalExpensesView()
.environmentObject(PEviewModel)
.tabItem {
Label("Personal expenses list", systemImage: "dollarsign.circle")
}
// another view
.tabItem {
Label("Graph", systemImage: "chart.bar.fill")
}
}
}
//.navigationBarBackButtonHidden()
}
}
The MainView contains the two views you can navigate in. I added that navigationStack and the navigationBarBackButton() just to delete the back bar button so I could try if it worked (it didn't). PersonalExpensesView has the following (and it worked before the logInUpdate)
var body: some View {
NavigationStack {
VStack {
// all the listing of personal expenses and stuff
.navigationTitle("Personal Expenses")
.toolbar {
ToolbarItem(placement: .navigationBarLeading) {
EditButton()
}
ToolbarItem(placement: .navigationBarTrailing) {
Button {
showingSheet = true
} label: {
Label("Add Book", systemImage: "plus")
}
}
}
}
.searchable(text: $textFilter)
.sheet(isPresented: $showingSheet) {
NewPEView()
.environmentObject(PEviewModel)
}
}
}
}
And here's the code I added later (the logIn code) :
var body: some View {
NavigationStack {
VStack {
Button() {
authenticate()
} label: {
Label("Usar Face ID", systemImage: "faceid")
}
.customButton()
.navigationDestination(isPresented: $unlocked){// authenticate() sets unlocked true
MainView()
}
}
}
So the correct UI (without using login) is the following
correct
And with login: bugged
I tried using a NavigationStack as I showed in the MainView()
Related
I have an app that contains several views with NavigationLinks inside.
The main view looks like this, calling a Toolbar view I have created.
struct CountListView: View {
#StateObject var vm = CountListViewModel()
let navigationBar = HomePageNavigationBar()
var body: some View {
NavigationView {
List {
ForEach(vm.count, id: \.uid) { item in
NavigationLink(destination: CountView(count: item)) {
CountListItemView(name: item.name)
}
}
}
.toolbar {
navigationBar.rightSideOfBar()
navigationBar.leftSideOfBar()
}
.navigationBarTitle("Count")
The navigation bar function that is playing up looks like this
func leftSideOfBar() -> some ToolbarContent {
ToolbarItemGroup(placement: .navigationBarLeading) {
NavigationLink(destination: SettingsView()) {
Label("Settings", systemImage: "gear")
}
}
}
And the SettingsView is as follows:
struct SettingsView: View {
var body: some View {
List {
NavigationLink(destination: NameSettingView()) {
Text("Name")
}
.buttonStyle(PlainButtonStyle())
NavigationLink(destination: PrivacyPolicyView()) {
Text("Privacy Policy")
}
.buttonStyle(PlainButtonStyle())
}
.navigationViewStyle(StackNavigationViewStyle())
}
}
When I open the Privacy Policy View on device, the returns to the SettingsView without any user intervention. But this problem doesn't exist in the simulator.
I'm a beginner at swiftui. I need to add an exit button to .navigationBarItems. How can I add this button in the parent NavigationView to show this button on all children's views?
// a simple example on my question
struct FirstView: View {
var body: some View {
NavigationView {
ZStack{
TabView{
SubExampleViewOne()
.tabItem {
Image(systemName: "house.fill")
Text("Home")
}
SubExampleViewTwo()
.tabItem {
Image(systemName: "bookmark.circle.fill")
Text("Bookmark")
}
}
}
//here I have added a toolbar and it is perfectly visible in tabitem
//this is what I am trying to achieve, the visibility of the button on all pages
.toolbar {
ToolbarItem(placement: .navigationBarTrailing) {
ButtonExitView()
}
}
}
}
}
something strange - if I add NavigationLink in this way, Image and Text("Home") are visible twice
and the ToolbarItem is no longer on the new page
struct SubExampleViewOne: View {
var body: some View {
Text("This is hime page!")
.padding()
NavigationLink(destination: SubExampleViewThree()){
Text("Navigation link")
}
}
}
struct SubExampleViewTwo: View {
var body: some View {
Text("Hello, world!")
.padding()
}
}
struct SubExampleViewThree: View {
var body: some View {
Text("This is Navigation link")
.padding()
}
}
struct ButtonExitView: View {
var body: some View {
Button(action: {}, label: {Image(systemName: "arrowshape.turn.up.right.circle")})
}
}
after learning about TabView, I thought that there should be a similar solution for the top of the page
You have to add the button to each child view separately.
And you should use .toolbar and .toolBarItem because .navigationBarItems is deprecated.
I am trying to present a sheet from a sub view selected from the menu item on the navigation bar but the modal Sheet does does not display. I spent a few days trying to debug but could not pin point the problem.
I am sorry, this is a little confusing and will show a simplified version of the code to reproduce. But in a nutshell, the problem seems to be a sheet view that I have as part of the main view. Removing the sheet code from the main view displays the sheet from the sub view. Unfortunately, I don't have the freedom to change the Mainview.swift
Let me show some code to make it easy to understand....
First, before showing the code, the steps to repeat the problem:
click on the circle with 3 dots in the navigation bar
select the second item (Subview)
click on the "Edit Parameters" button and the EditParameters() view will not display
ContentView.swift (just calls the Mainview()). Included code to copy for reproducing issue :-)
struct ContentView: View {
var body: some View {
NavigationView {
VStack {
Mainview()
}
}
}
}
Mainview.swift. This is a simplified version of the actual App which is quite complex and I don't have leeway to change much here unfortunately!
fileprivate enum CurrentView {
case summary, sub
}
enum OptionSheet: Identifiable {
var id: Self {self}
case add
}
struct Mainview: View {
#State private var currentView: CurrentView? = .summary
#State private var showSheet: OptionSheet? = nil
var body: some View {
GeometryReader { g in
content.frame(width: g.size.width, height: g.size.height)
.navigationBarTitle("Main", displayMode: .inline)
}
//Removing the below sheet view will display the sheet from the subview but with this sheet here, it the sheet from subview does not work. This is required as these action items are accessed from the second menu item (circle and arrow) navigation baritem
.sheet(item: $showSheet, content: { mode in
sheetContent(for: mode)
})
.toolbar {
HStack {
trailingBarItems
actionItems
}
}
}
var actionItems: some View {
Menu {
Button(action: {
showSheet = .add
}) {
Label("Add Elements", systemImage: "plus")
}
} label: {
Image(systemName: "cursorarrow.click").resizable()
}
}
var trailingBarItems: some View {
Menu {
Button(action: {currentView = .summary}) {
Label("Summary", systemImage: "list.bullet.rectangle")
}
Button(action: {currentView = .sub}) {
Label("Subview", systemImage: "circle")
}
} label: {
Image(systemName: "ellipsis.circle").resizable()
}
}
#ViewBuilder
func sheetContent(for mode: OptionSheet) -> some View {
switch mode {
case .add:
AddElements()
}
}
#ViewBuilder
var content: some View {
if let currentView = currentView {
switch currentView {
case .summary:
SummaryView()
case .sub:
SubView()
}
}
}
}
Subview.swift. This is the file that contains the button "Edit Parameters" which does not display the sheet. I am trying to display the sheet from this view.
struct SubView: View {
#State private var editParameters: Bool = false
var body: some View {
VStack {
Button(action: {
editParameters.toggle()
}, label: {
HStack {
Image(systemName: "square.and.pencil")
.font(.headline)
Text("Edit Parameters")
.fontWeight(.semibold)
.font(.headline)
}
})
.padding(10)
.foregroundColor(Color.white)
.background(Color(.systemBlue))
.cornerRadius(20)
.sheet(isPresented: $editParameters, content: {
EditParameterView()
})
.padding()
Text("Subview....")
}
.padding()
}
}
EditParameters.swift. This is the view it should display when the Edit Parameters button is pressed
struct EditParameterView: View {
var body: some View {
Text("Edit Parameters...")
}
}
Summaryview.swift. Nothing special here. just including for completeness
struct SummaryView: View {
var body: some View {
Text("Summary View")
}
}
In SwiftUI, you can't have 2 .sheet() modifiers on the same hierarchy. Here, the first .sheet() modifier is on one of the parent views to the second .sheet(). The easy solution is to move one of the .sheets() so it's own hierarchy.
You could either use ZStacks:
var body: some View {
ZStack {
GeometryReader { g in
content.frame(width: g.size.width, height: g.size.height)
.navigationBarTitle("Main", displayMode: .inline)
}
ZStack{ }
.sheet(item: $showSheet, content: { mode in
sheetContent(for: mode)
})
}
.toolbar {
HStack {
trailingBarItems
actionItems
}
}
}
or more elegantly:
var body: some View {
GeometryReader { g in
content.frame(width: g.size.width, height: g.size.height)
.navigationBarTitle("Main", displayMode: .inline)
}
.background(
ZStack{ }
.sheet(item: $showSheet, content: { mode in
sheetContent(for: mode)
})
)
.toolbar {
HStack {
trailingBarItems
actionItems
}
}
}
The .navigationTitle on some views seem to be having some problems. On some views (and only some of the time), the .navigationTitle will not change from .large to .inline as would be expected. Instead, the title stays in place when scrolling up, and the navigation bar is completely invisible (as outlined in the video below). This is all reproducible every time.
Video of reproducible .navigationTitle bugs
I haven't found any people on stack overflow or the Apple Developer forums who have run into this exact issue. There have some people who have produced similar results as this, but those were all fixed by removing some stylizing code to the .navigationbar, of which I am not making any modifications to it anywhere in my code.
Below are some snippets of my code:
import SwiftUI
struct WelcomeUI: View {
var body: some View {
NavigationView {
VStack {
//NavigationLink(destination: SignupUI(), label: {
//Text("Sign Up")
//}
NavigationLink(destination: LoginUI(), label: {
Text("Log In")
})
}
}
}
}
struct LoginUI: View {
var body: some View {
VStack {
NavigationLink(destination: MainUI(), label: { Text("Log In") })
//Button(action: { ... }
}
.navigationBarHidden(false)
}
}
struct MainUI: View {
#State var selectedTab: Views = .add
var body: some View {
TabView(selection: $selectedTab) {
SpendingView()
.tabItem {
Image(systemName: "bag.circle")
Text("Spending")
}.tag(Views.spending)
Text("Adding View")
.tabItem {
Image(systemName: "plus")
Text("Add")
}.tag(Views.add)
Text("Edit View")
.tabItem {
Image(systemName: "pencil")
Text("Edit")
}.tag(Views.edit)
SettingsView()
.tabItem {
Image(systemName: "gear")
Text("Settings")
}.tag(Views.settings)
}
.navigationBarTitle(Text(selectedTab.rawValue))
.navigationBarBackButtonHidden(true)
}
}
enum Views: String {
case spending = "Spending"
case add = "Add"
case edit = "Edit"
case settings = "Settings"
}
struct SettingsView: View {
var body: some View {
VStack{
ZStack {
Form {
Section(header: Text("Section Header")) {
NavigationLink(destination: WelcomeUI()) {
Text("Setting Option")
}
}
Section {
//Button("Log Out") {
//self.logout()
//}
Text("Log Out")
}
}
Button("say-high", action: {print("Hi")})
}
}
}
}
struct SpendingView: View {
var body: some View {
ScrollView{
Text("SpendingView")
NavigationLink("subSpending", destination: SubSpendingView())
}.padding()
}
}
struct SubSpendingView: View {
var body: some View {
ScrollView{
Text("SubSpendingView")
}.navigationBarTitle("SubSpending")
}
}
It almost seems like a bug in SwiftUI itself just because the fact that bringing down the control centre makes it kind of work, but with no animation (as seen in the video). Also, changing which view is selected first in #State var selectedTab: Views seems to let the view selected to work as expected, but lets the rest of the tabs mess up.
When I build and run the app on my iPad, it behaves as expected with no bugs, it's only when run on my iPhone and the iOS simulator on Mac that it does this, any way to fix this?
For this to work flawlessly the ScrollView needs to be the direct child of the NavigationView. I ran into a similar issue with wanting to dismiss the TabView when I navigating but SwiftUI won't let that happen. Each tab needs to be a NavigationView and you need to dismiss the TabView creatively if that is what you want.
TabView {
NavigationView {
ScrollView {
// your view here
}
}.tabItem {
// tab label
}
// etc
}
Essentially the navigation view needs to be a child (in the brackets) of the tab view and the scrollview needs to be the direct child of the navigation view.
Use navigationBarTitle("Title") and navigationBarBackButtonHidden(true) on the TabView's sub-view, not on itself.
struct ContentView: View {
var body: some View {
NavigationView {
VStack {
}
.navigationBarTitle("Title")
.navigationBarBackButtonHidden(true)
}
}
}
I am developing an app with SwiftUI.
I have a NavigationView and I have buttons on the navigation bar. I want to replace the current view (which is a result of a TabView selection) with another one.
Basically, when the user clicks "Edit" button, I want to replace the view with another view to make the edition and when the user is done, the previous view is restored by clicking on a "Done" button.
I could just use a variable to dynamically choose which view is displayed on the current tab view, but I feel like this isn't the "right way to do" in SwiftUI. And this way I could not apply any transition visual effect.
Some code samples to explain what I am looking for.
private extension ContentView {
#ViewBuilder
var navigationBarLeadingItems: some View {
if tabSelection == 3 {
Button(action: {
print("Edit pressed")
// Here I want to replace the tabSelection 3 view by another view temporarly and update the navigation bar items
}) {
Text("Edit")
}
}
}
}
struct ContentView: View {
var body: some View {
NavigationView {
TabView(selection: $tabSelection) {
ContactPage()
.tabItem {
Text("1")
}
.tag(1)
Text("Chats")
.tabItem() {
Text("2")
}
.tag(2)
SettingsView()
.tabItem {
Text("3")
}
.tag(3)
}.navigationBarItems(leading: navigationBarLeadingItems)
}
}
}
Thank you
EDIT
I have a working version where I simply update a toggle variable in my button action that makes my view display one or another thing, it is working but I cannot apply any animation effect on it, and it doesn't look "right" in SwiftUI, I guess there is something better that I do not know.
If you just want to add animations you can try:
struct ContentView: View {
...
#State var showEditView = false
var body: some View {
NavigationView {
TabView(selection: $tabSelection) {
...
view3
.tabItem {
Text("3")
}
.tag(3)
}
.navigationBarItems(leading: navigationBarLeadingItems)
}
}
}
private extension ContentView {
var view3: some View {
VStack {
if showEditView {
FormView()
.background(Color.red)
.transition(.slide)
} else {
Text("View 3")
.background(Color.blue)
.transition(.slide)
}
}
}
}
struct FormView: View {
var body: some View {
Form {
Text("test")
}
}
}
A possible alternative is to use a ViewRouter: How To Navigate Between Views In SwiftUI By Using An #EnvironmentObject.