htpA here!
I am a newbie of SwiftUI programming and I am just trying to add a navigation title for macOS like in iOS. I tried many things but it didn't seem to be working. I hope anyone would answer it quickly.
Here's my code
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
List {
Spacer()
NavigationLink(destination: LatestEpisodes()) {
Menu1()
}
.frame(minWidth: 110)
.frame(maxWidth: 110)
}
Text("Content")
}
.navigationTitle("Hello!")
.frame(minWidth: 900)
.listStyle(SidebarListStyle())
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
struct Menu1: View {
var body: some View {
VStack {
Image(systemName: "1.circle.fill")
Text("Menu1")
}
.frame(width: 90, height: 90)
.padding(10)
}
}
I am trying to push from login view to detail view but not able to make it.even navigation bar is not showing in login view. How to push on button click in SwiftUI? How to use NavigationLink on button click?
var body: some View {
NavigationView {
VStack(alignment: .leading) {
Text("Let's get you signed in.")
.bold()
.font(.system(size: 40))
.multilineTextAlignment(.leading)
.frame(width: 300, height: 100, alignment: .topLeading)
.padding(Edge.Set.bottom, 50)
Text("Email address:")
.font(.headline)
TextField("Email", text: $email)
.frame(height:44)
.accentColor(Color.white)
.background(Color(UIColor.darkGray))
.cornerRadius(4.0)
Text("Password:")
.font(.headline)
SecureField("Password", text: $password)
.frame(height:44)
.accentColor(Color.white)
.background(Color(UIColor.darkGray))
.cornerRadius(4.0)
Button(action: {
print("login tapped")
}) {
HStack {
Spacer()
Text("Login").foregroundColor(Color.white).bold()
Spacer()
}
}
.accentColor(Color.black)
.padding()
.background(Color(UIColor.darkGray))
.cornerRadius(4.0)
.padding(Edge.Set.vertical, 20)
}
.padding(.horizontal,30)
}
.navigationBarTitle(Text("Login"))
}
To fix your issue you need to bind and manage tag with NavigationLink, So create one state inside you view as follow, just add above body.
#State var selection: Int? = nil
Then update your button code as follow to add NavigationLink
NavigationLink(destination: Text("Test"), tag: 1, selection: $selection) {
Button(action: {
print("login tapped")
self.selection = 1
}) {
HStack {
Spacer()
Text("Login").foregroundColor(Color.white).bold()
Spacer()
}
}
.accentColor(Color.black)
.padding()
.background(Color(UIColor.darkGray))
.cornerRadius(4.0)
.padding(Edge.Set.vertical, 20)
}
Meaning is, when selection and NavigationLink tag value will match then navigation will be occurs.
I hope this will help you.
iOS 16+
Note: Below is a simplified example of how to present a new view. For a more advanced generic example please see this answer.
In iOS 16 we can access the NavigationStack and NavigationPath.
Usage #1
A new view is activated by a simple NavigationLink:
struct ContentView: View {
var body: some View {
NavigationStack {
NavigationLink(value: "NewView") {
Text("Show NewView")
}
.navigationDestination(for: String.self) { view in
if view == "NewView" {
Text("This is NewView")
}
}
}
}
}
Usage #2
A new view is activated by a standard Button:
struct ContentView: View {
#State private var path = NavigationPath()
var body: some View {
NavigationStack(path: $path) {
Button {
path.append("NewView")
} label: {
Text("Show NewView")
}
.navigationDestination(for: String.self) { view in
if view == "NewView" {
Text("This is NewView")
}
}
}
}
}
Usage #3
A new view is activated programmatically:
struct ContentView: View {
#State private var path = NavigationPath()
var body: some View {
NavigationStack(path: $path) {
Text("Content View")
.navigationDestination(for: String.self) { view in
if view == "NewView" {
Text("This is NewView")
}
}
}
.onAppear {
path.append("NewView")
}
}
}
iOS 13+
The accepted answer uses NavigationLink(destination:tag:selection:) which is correct.
However, for a simple view with just one NavigationLink you can use a simpler variant: NavigationLink(destination:isActive:)
Usage #1
NavigationLink is activated by a standard Button:
struct ContentView: View {
#State var isLinkActive = false
var body: some View {
NavigationView {
VStack(alignment: .leading) {
...
NavigationLink(destination: Text("OtherView"), isActive: $isLinkActive) {
Button(action: {
self.isLinkActive = true
}) {
Text("Login")
}
}
}
.navigationBarTitle(Text("Login"))
}
}
}
Usage #2
NavigationLink is hidden and activated by a standard Button:
struct ContentView: View {
#State var isLinkActive = false
var body: some View {
NavigationView {
VStack(alignment: .leading) {
...
Button(action: {
self.isLinkActive = true
}) {
Text("Login")
}
}
.navigationBarTitle(Text("Login"))
.background(
NavigationLink(destination: Text("OtherView"), isActive: $isLinkActive) {
EmptyView()
}
.hidden()
)
}
}
}
Usage #3
NavigationLink is hidden and activated programmatically:
struct ContentView: View {
#State var isLinkActive = false
var body: some View {
NavigationView {
VStack(alignment: .leading) {
...
}
.navigationBarTitle(Text("Login"))
.background(
NavigationLink(destination: Text("OtherView"), isActive: $isLinkActive) {
EmptyView()
}
.hidden()
)
}
.onAppear {
self.isLinkActive = true
}
}
}
Here is a GitHub repository with different SwiftUI extensions that makes navigation easier.
Another approach:
SceneDelegate
if let windowScene = scene as? UIWindowScene {
let window = UIWindow(windowScene: windowScene)
window.rootViewController = UIHostingController(rootView: BaseView().environmentObject(ViewRouter()))
self.window = window
window.makeKeyAndVisible()
}
BaseView
import SwiftUI
struct BaseView : View {
#EnvironmentObject var viewRouter: ViewRouter
var body: some View {
VStack {
if viewRouter.currentPage == "view1" {
FirstView()
} else if viewRouter.currentPage == "view2" {
SecondView()
.transition(.scale)
}
}
}
}
#if DEBUG
struct MotherView_Previews : PreviewProvider {
static var previews: some View {
BaseView().environmentObject(ViewRouter())
}
}
#endif
ViewRouter
import Foundation
import Combine
import SwiftUI
class ViewRouter: ObservableObject {
let objectWillChange = PassthroughSubject<ViewRouter,Never>()
var currentPage: String = "view1" {
didSet {
withAnimation() {
objectWillChange.send(self)
}
}
}
}
FirstView
import SwiftUI
struct FirstView : View {
#EnvironmentObject var viewRouter: ViewRouter
var body: some View {
VStack {
Button(action: {self.viewRouter.currentPage = "view2"}) {
NextButtonContent()
}
}
}
}
#if DEBUG
struct FirstView_Previews : PreviewProvider {
static var previews: some View {
FirstView().environmentObject(ViewRouter())
}
}
#endif
struct NextButtonContent : View {
var body: some View {
return Text("Next")
.foregroundColor(.white)
.frame(width: 200, height: 50)
.background(Color.blue)
.cornerRadius(15)
.padding(.top, 50)
}
}
SecondView
import SwiftUI
struct SecondView : View {
#EnvironmentObject var viewRouter: ViewRouter
var body: some View {
VStack {
Spacer(minLength: 50.0)
Button(action: {self.viewRouter.currentPage = "view1"}) {
BackButtonContent()
}
}
}
}
#if DEBUG
struct SecondView_Previews : PreviewProvider {
static var previews: some View {
SecondView().environmentObject(ViewRouter())
}
}
#endif
struct BackButtonContent : View {
var body: some View {
return Text("Back")
.foregroundColor(.white)
.frame(width: 200, height: 50)
.background(Color.blue)
.cornerRadius(15)
.padding(.top, 50)
}
}
Hope this helps!
Simplest and most effective solution is :
NavigationLink(destination:ScoresTableView()) {
Text("Scores")
}.navigationBarHidden(true)
.frame(width: 90, height: 45, alignment: .center)
.foregroundColor(.white)
.background(LinearGradient(gradient: Gradient(colors: [Color.red, Color.blue]), startPoint: .leading, endPoint: .trailing))
.cornerRadius(10)
.contentShape(Rectangle())
.padding(EdgeInsets(top: 16, leading: UIScreen.main.bounds.size.width - 110 , bottom: 16, trailing: 20))
ScoresTableView is the destination view.
In my opinion a cleaner way for iOS 16+ is using a state bool to present the view.
struct ButtonNavigationView: View {
#State private var isShowingSecondView : Bool = false
var body: some View {
NavigationStack {
VStack{
Button(action:{isShowingSecondView = true} ){
Text("Show second view")
}
}.navigationDestination(isPresented: $isShowingSecondView) {
Text("SecondView")
}
}
}
}
I think above answers are nice, but simpler way should be:
NavigationLink {
TargetView()
} label: {
Text("Click to go")
}
Curious how the following navigation bar can be achieved using SwiftUI, does a UI that mimics the looks of navigation bar need to made or is there a way to add an actual NavigationView?
I think yes? Consider the following code.
import SwiftUI
struct ContentView: View {
var body: some View {
VStack {
Text("Hello, world!")
.padding()
Spacer()
miniNavigationView
Spacer()
Text("Hello, world!")
.padding()
}
.background(.red)
}
var miniNavigationView: some View {
HStack {
NavigationView {
ScrollView {
VStack {
Text("Inside the mini Navigation View!")
}
}
.navigationTitle("Inside the mini Navigation view!")
}
}
.frame(width: 250, height: 250)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
Gif of Result
Long story short this is an onboarding view after a user goes through auth. My main navigation of the app uses navigationview but I can't use that for onboarding. I've put a fullscreencover over the main screen for this onboarding stuff.
However, when trying to simply navigate between the views from different files between the onboarding screens, the button doesn't show the other view. I've tried everything under the son from #Appstorage and #Environment stuff but can't get it to work.
Also please note I cut off the bottom of the rest of the file as that had nothing to do with this logic.
import SwiftUI
struct OnboardingTestView: View {
#State var shouldShowOnboarding = true
var body: some View {
if shouldShowOnboarding {
OffsetChoicesView(shouldShowOnboarding: $shouldShowOnboarding)
}
if shouldShowOnboarding == false {
PersonalInfoView()
}
}
}
struct OnboardingTestView_Previews: PreviewProvider {
static var previews: some View {
OnboardingTestView()
}
}
//*********************************************************************
//OffsetChoicesView
struct OffsetChoicesView: View {
#Binding var shouldShowOnboarding: Bool
var body: some View {
ZStack {
Color(#colorLiteral(red: 0.9803921569, green: 0.9568627451, blue: 0.9568627451, alpha: 1)).edgesIgnoringSafeArea(/*#START_MENU_TOKEN#*/.all/*#END_MENU_TOKEN#*/)
VStack {
Progress1View()
.padding(.bottom, 40)
.padding(.top)
Spacer()
Button(action: {
shouldShowOnboarding = false
}) {
NextButtonView()
.padding(.top)
.padding(.bottom)
}
}
You can try something like this - utilizes #AppStorage
I was not quite sure what the OffsetChoiceView() parameters are supposed to be.. so I just removed them in the example. This should be whatever your onboarding view is called.
import SwiftUI
struct OnboardingTestView: View {
//#State var shouldShowOnboarding = true
#AppStorage("showOnboarding") var showOnboarding: Bool = true
var body: some View {
if (showOnboarding == true) {
OffsetChoicesView()
} else if (showOnboarding == false) {
PersonalInfoView()
}
}
}
struct OnboardingTestView_Previews: PreviewProvider {
static var previews: some View {
OnboardingTestView()
}
}
//*********************************************************************
//OffsetChoicesView
struct OffsetChoicesView: View {
//#Binding var shouldShowOnboarding: Bool
#AppStorage("showOnboarding") var showOnboarding: Bool = false
var body: some View {
ZStack {
Color(#colorLiteral(red: 0.9803921569, green: 0.9568627451, blue: 0.9568627451, alpha: 1)).edgesIgnoringSafeArea(/*#START_MENU_TOKEN#*/.all/*#END_MENU_TOKEN#*/)
VStack {
Progress1View()
.padding(.bottom, 40)
.padding(.top)
Spacer()
Button(action: {
showOnboarding = false
}) {
NextButtonView()
.padding(.top)
.padding(.bottom)
}
}
I want to change the background color of top safe area from green to gray. I have looked everywhere but could not find any solution. The screen in preview looks like this.
My codes:
struct ContentView: View {
#State var name = ""
init() {
//Use this if NavigationBarTitle is with Large Font
UINavigationBar.appearance().largeTitleTextAttributes = [.foregroundColor: UIColor.red]
UINavigationBar.appearance().backgroundColor = .gray
}
var body: some View {
NavigationView {
ZStack{
VStack{
TextField("Name", text: $name)
.frame(height:200)
.padding()
.background(backgrounImage())
.overlay(RoundedRectangle(cornerRadius: 20).stroke(Color.gray,lineWidth: 4))
.padding()
Spacer()
}.navigationTitle("Tanvir")
.background(Color.green.edgesIgnoringSafeArea(.all))
}
}
}
}
You can add another view on top of the ZStack:
var body: some View {
NavigationView {
ZStack(alignment: .top) { // <- Don't forget this
,,,
GeometryReader { reader in
Color.yellow
.frame(height: reader.safeAreaInsets.top, alignment: .top)
.ignoresSafeArea()
}
}
}
}
Don't forget the stack alignment!
Consistant Bar for the entire App
If you need it to be on all of your views, try putting the code somewhere more consistent like where you are providing the contentView:
#main
struct SwiftUIAppPlaygroundApp: App {
var body: some Scene {
WindowGroup {
ZStack {
ContentView()
GeometryReader { reader in
Color.yellow
.frame(height: reader.safeAreaInsets.top, alignment: .top)
.ignoresSafeArea()
}
}
}
}
}
Use this UIApplication extension to chagne your status bar color
extension UIApplication {
/**
Get status bar view
*/
var statusBarUIView: UIView? {
let tag = 13101996
if let statusBar = self.windows.first?.viewWithTag(tag) {
self.windows.first?.bringSubviewToFront(statusBar)
return statusBar
} else {
let statusBarView = UIView(frame: UIApplication.shared.windows.first?.windowScene?.statusBarManager?.statusBarFrame ?? .zero)
statusBarView.tag = tag
self.windows.first?.addSubview(statusBarView)
return statusBarView
}
}
}
Usage
struct ContentViewStatusBar: View {
#State var name = ""
init() {
//Use this if NavigationBarTitle is with Large Font
UINavigationBar.appearance().largeTitleTextAttributes = [.foregroundColor: UIColor.red]
UINavigationBar.appearance().backgroundColor = .gray
}
var body: some View {
NavigationView {
ZStack{
VStack{
TextField("Name", text: $name)
.frame(height:200)
.padding()
.background(backgrounImage())
.overlay(RoundedRectangle(cornerRadius: 20).stroke(Color.gray,lineWidth: 4))
.padding()
Spacer()
}.navigationTitle("Tanvir")
.background(Color.green.edgesIgnoringSafeArea(.all))
}
}.onAppear {
UIApplication.shared.statusBarUIView?.backgroundColor = .gray //<<=== Here
}
}
}