Here is my code
struct ContentView: View {
#State var showingPopover = false
var body: some View {
VStack {
Spacer()
Text("Hello World")
Spacer()
HStack {
Spacer()
Button {
self.showingPopover.toggle()
} label: {
Image(systemName: "plus.circle")
}
.popover(isPresented: $showingPopover) {
List(0..<100) { Text("\($0)") }
}.padding(30)
}
}
}
}
This should produce a really nice popover coming from the plus button. But all I get is a really squashed down popover.
Any idea what I am missing here? Is there a way to tell the popover to expand more (without specifying a size)?
You may use a ScrollView and ForEach instead of a List:
struct ContentView: View {
#State var showingPopover = false
var body: some View {
VStack {
Spacer()
Text("Hello World")
Spacer()
HStack {
Spacer()
Button(action: {
self.showingPopover.toggle()
}) {
Image(systemName: "plus.circle")
}
.padding(30)
}
}
// can be attached to the button as well (as in the question)
.popover(isPresented: $showingPopover,
attachmentAnchor: .point(.bottomTrailing),
arrowEdge: .bottom) {
ScrollView(.vertical, showsIndicators: false) {
ForEach(0 ..< 100) {
Text("\($0)")
}
}
}
}
}
You can provide a custom frame for the List. Also, don't forget to embed List inside a ScrollView if you want it to scroll.
ScrollView {
List(0..<100) {
Text("\($0)")
}
.frame(width: 100, height: 250)
}
Related
I just build a small pop up with .spring() animation that I want to use later in my app, but the back transition is not smooth. It simply disappear from the hierarchy. So here is my code:
struct TestPopUp: View {
#State var screen: Bool = false
var body: some View {
ZStack {
Color.white
.edgesIgnoringSafeArea(.all)
VStack {
Button("Click") {
withAnimation(.spring()) {
screen.toggle()
}
}
.font(.largeTitle)
if screen {
NewScreen(screen: $screen)
.padding(.top, 300)
.transition(.move(edge: .bottom))
}
}
struct NewScreen: View {
#Binding var screen: Bool
var body: some View {
ZStack(alignment: .topLeading) {
Color.black
.edgesIgnoringSafeArea(.all)
Button {
screen.toggle()
} label: {
Image(systemName: "xmark")
.foregroundColor(.white)
.font(.largeTitle)
.padding(20)
}
}
}
}
Transition popup
As you can see in the video, the view disappears. But I want the same transition backwards.
You have to animate the transition both ways, in and out. Therefore, NewScreen becomes:
struct NewScreen: View {
#Binding var screen: Bool
var body: some View {
ZStack(alignment: .topLeading) {
Color.black
.edgesIgnoringSafeArea(.all)
Button {
withAnimation(.spring()) { // Animate here!
screen.toggle()
}
} label: {
Image(systemName: "xmark")
.foregroundColor(.white)
.font(.largeTitle)
.padding(20)
}
}
}
}
Does anyone know why when I have two NavigationLinks in the same view, there is this bug that my view pops up correctly, but then immediately disappears. I've tried different solutions, but none of them seem to be working. Any help would be appreciated. I believe the error might be related to isActive, but I'm not sure.
So, basically, I have a button that is supposed to open up the MessageView through the NavigationLink and dismiss the ChatView and ConversationCell views.
import SwiftUI
struct ConversationsView: View {
#State var isShowingNewMessageView: Bool = false
#State var showChat: Bool = false
var body: some View {
ZStack(alignment: .bottomTrailing) {
NavigationLink(isActive: $showChat, destination: {ChatView()}) {
// EmptyView()
}
NavigationLink(destination: EmptyView(), label: {})
.navigationViewStyle(StackNavigationViewStyle())
ScrollView {
VStack {
ForEach(0..<20) { _ in
NavigationLink {
ChatView()
} label: {
ConversationCell()
}
}
}
.padding()
}
Button {
self.isShowingNewMessageView.toggle()
} label: {
Image(systemName: "envelope")
.resizable()
.scaledToFit()
.frame(width: 32, height: 32)
.padding()
}
.background(Color.blue)
.foregroundColor(.white)
.clipShape(Circle())
.padding()
.sheet(isPresented: $isShowingNewMessageView, content: {
NewMessageView(startChat: $showChat, show: $isShowingNewMessageView)
})
}
}
}
struct ConversationsView_Previews: PreviewProvider {
static var previews: some View {
NavigationView {
ConversationsView()
}
}
}
I have two views
import SwiftUI
import CoreData
struct ContentView: View {
var body: some View {
NavigationView {
VStack {
Image("qr-code")
.resizable()
.scaledToFit()
.position(x: 100, y: 100)
.offset(x: 100)
Text("Thank you")
.position(x: 200)
}.toolbar{
ToolbarItemGroup(placement: .bottomBar) {
NavigationLink(destination: ContentView().navigationBarBackButtonHidden(true)) {
Text("Show QR")
}
Spacer()
NavigationLink(destination: CustomizeView().navigationBarBackButtonHidden(true)) {
Text("Customize")
}
}
}
}
}
}
struct CustomizeView: View {
var body: some View {
List {
Section(header: Text("Important tasks")) {
Text("Task data goes here")
Text("Task data goes here")
}
}.toolbar{
ToolbarItemGroup(placement: .bottomBar) {
NavigationLink(destination: ContentView().navigationBarBackButtonHidden(true)) {
Text("Show QR")
}
Spacer()
NavigationLink(destination: CustomizeView().navigationBarBackButtonHidden(true)) {
Text("Customize")
}
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
Group {
ContentView().environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
CustomizeView().environment(\.managedObjectContext, PersistenceController.preview.container.viewContext)
}
}
}
When I click on Customize and the click on Show, I see that the picture moves down. Is it expected behavior? How can I make sure that all elements are in the same positions regardless of how much I clicked on nvaigation buttons?
You should only have one NavigationView in your view hierarchy.
Right now, there are NavigationViews in ContentView and in CustomizeView any time you navigate to either with a NavigationLink, it will add an additional navigation bar to the view, pushing down your content.
To fix this, your root view could just be the NavigationView and then you links could navigation to views that do not contain additional NavigationViews.
struct ContentView: View {
var body: some View {
NavigationView {
BasicView()
}
}
}
struct BasicView : View {
var body: some View {
VStack {
Image(systemName: "pencil")
.resizable()
.scaledToFit()
.position(x: 100, y: 100)
.offset(x: 100)
Text("Thank you")
.position(x: 200)
}.toolbar{
ToolbarItemGroup(placement: .bottomBar) {
NavigationLink(destination: BasicView().navigationBarBackButtonHidden(true)) {
Text("Show QR")
}
Spacer()
NavigationLink(destination: CustomizeView().navigationBarBackButtonHidden(true)) {
Text("Customize")
}
}
}
}
}
struct CustomizeView: View {
var body: some View {
List {
Section(header: Text("Important tasks")) {
Text("Task data goes here")
Text("Task data goes here")
}
}.toolbar{
ToolbarItemGroup(placement: .bottomBar) {
NavigationLink(destination: BasicView().navigationBarBackButtonHidden(true)) {
Text("Show QR")
}
Spacer()
NavigationLink(destination: CustomizeView().navigationBarBackButtonHidden(true)) {
Text("Customize")
}
}
}
}
}
The problem is, I think you have called another ContentView from a ContentView. That's why one more navigation bar is added and shifted
You can create another view called QRShowView and place the qr image there and you have already CustomizeView view . Add two buttons in ContentView like show or customized.
Then call the respective view when is clicked.
I have tried to use Buttons and Navigation Links from various examples when researched on this channel and on the net. The NavigationLink would be ok, except that the NavigationView is pushing everything down in my view.
I have a view that contains an image and a text like this: ( x Close) but when I use the code below, the Close button is not doing anything.
In ContentView() I have a (?) button that takes me from WalkthroughView(), then to the PageTabView, then to this view, TabDetailsView:
ContentView():
ZStack {
NavigationView {
VStack {
Text("Hello World")
.padding()
.font(.title)
.background(Color.red)
.foregroundColor(.white)
}
.toolbar {
ToolbarItem(placement: .navigationBarLeading) {
Button {
withAnimation {
showOnBoarding = true
}
} label: {
Image(systemName: "questionmark.circle.fill")
}
}
}
}
.accentColor(.red)
.disabled(showOnBoarding)
.blur(radius: showOnBoarding ? 3.0 : 0)
if showOnBoarding {
WalkthroughView(isWalkthroughViewShowing: $isWalkthroughViewShowing)
}
}
.onAppear {
if !isWalkthroughViewShowing {
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
withAnimation {
showOnBoarding.toggle()
isWalkthroughViewShowing = true
}
}
}
}
WalkthroughView():
var body: some View {
ZStack {
GradientView()
VStack {
PageTabView(selection: $selection)
// shows Previous/Next buttons only
ButtonsView(selection: $selection)
}
}
.transition(.move(edge: .bottom))
}
PageTabView():
var body: some View {
TabView(selection: $selection) {
ForEach(tabs.indices, id: \.self) { index in
TabDetailsView(index: index)
}
}
.tabViewStyle(PageTabViewStyle())
}
below, is the TabDetailsView():
At the top of the view is this Close button, when pressed, should send me back to ContentView, but nothing is happening.
struct TabDetailsView: View {
#Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
let index: Int
then, inside the body:
VStack(alignment: .leading) {
Spacer()
VStack(alignment: .leading) {
// Button to close each walkthrough page...
Button(action: {
self.presentationMode.wrappedValue.dismiss()
}) {
Image(systemName: "xmark.circle.fill")
Text("Close")
}
.padding(.leading)
.font(.title2)
.accentColor(.orange)
Spacer()
VStack {
Spacer()
Image(tabs[index].image)
.resizable()
.aspectRatio(contentMode: .fit)
.frame(width: 415)
.padding(.leading, 10)
Text(tabs[index].title)
.font(.title)
.bold()
Text(tabs[index].text)
.padding()
Spacer()
}
.foregroundColor(.white)
}
}
if showOnBoarding {
WalkthroughView(isWalkthroughViewShowing: $isWalkthroughViewShowing)
}
Inserting view like above is not a presentation in standard meaning, that's why provided code does not work.
As this view is shown via showOnBoarding it should be hidden also via showOnBoarding, thus the solution is to pass binding to this state into view where it will be toggled back.
Due to deep hierarchy the most appropriate way is to use custom environment value. For simplicity let's use ResetDefault from https://stackoverflow.com/a/61847419/12299030 (you can rename it in your code)
So required modifications:
if showOnBoarding {
WalkthroughView(isWalkthroughViewShowing: $isWalkthroughViewShowing)
.environment(\.resetDefault, $showOnBoarding)
}
and in child view
struct TabDetailsView: View {
#Environment(\.resetDefault) var showOnBoarding
// .. other code
Button(action: {
self.showOnBoarding.wrappedValue.toggle()
}) {
Image(systemName: "xmark.circle.fill")
Text("Close")
}
I want to set an image in the titleView of NavigationBar in SwiftUI, as we do in UIKit
navigationItem.titleView = UIImageView(image: UIImage(named: "logo"))
this is how we do it in UIKit.
anyone know how to do it?
Here's how to do it:
Add SwiftUIX to your project.
Set your custom title view via View.navigationBarTitleView(_:displayMode:)
Example code:
struct ContentView: View {
public var body: some View {
NavigationView {
Text("Hello World")
.navigationBarTitleView(MyView())
}
}
}
Simple, Just add your root view into ZStack with top alignment and add your custom center view after root view
struct CenterNavigattionBar: View {
var body: some View {
ZStack(alignment: .top){
//Root view with empty Title
NavigationView {
Text("Test Navigation")
.navigationBarTitle("",displayMode: .inline)
.navigationBarItems(leading: Text("Cancle"), trailing: Text("Done"))
}
//Your Custom Title
VStack{
Text("add title and")
.font(.headline)
Text("subtitle here")
.font(.subheadline)
}
}
}
}
Before Image
After Image
Just use a toolbar.
You can add any views
import SwiftUI
struct HomeView: View {
// MARK: - Initializer
init() {
let appearance = UINavigationBar.appearance()
appearance.isOpaque = true
appearance.isTranslucent = false
appearance.barTintColor = UIColor(named: "background")
appearance.shadowImage = UIImage()
}
// MARK: - View
// MARK: Public
var body: some View {
NavigationView {
VStack(spacing: 20) {
Text("Hello")
Text("Navigation Bar Test")
}
.navigationBarTitleDisplayMode(.inline)
.navigationBarItems(leading: leadingBarButtonItems, trailing: trailingBarButtonItems)
.toolbar {
ToolbarItem(placement: .principal) {
VStack {
Text("Title").font(.headline)
Text("Subtitle").font(.subheadline)
}
}
}
}
}
// MARK: Private
private var leadingBarButtonItems: some View {
Button(action: {
}) {
Text("Left Button")
.font(.system(size: 12, weight: .medium))
}
}
private var trailingBarButtonItems: some View {
HStack {
Button(action: {
}) {
Text("R1\nButton")
.font(.system(size: 12, weight: .medium))
.multilineTextAlignment(.center)
}
Button(action: {
}) {
Text("R2\nButton")
.font(.system(size: 12, weight: .medium))
.multilineTextAlignment(.center)
}
}
}
}
Currently, you can't.
There are two overloads for .navigationBarTitle(), taking either a Text view or a type conforming to StringProtocol. You can't even pass in a modified view like Text("Title").font(.body). This would be a great feature, I'd submit a feature request: http://feedbackassistant.apple.com
Maybe this works for you?
Basically:
Use GeometryReader to get the width of the screen
Have NavigationBarItems(leading: HStack {Spacer() Image("name").resizable().frame(width:..., height: ..., alignment: .center Spacer()}.frame(width:geometry.size.width)
Example code:
struct ContentView: View {
var body: some View {
NavigationView {
GeometryReader { geometry in
Text("Hello, world!")
.padding()
.navigationTitle("test")
.navigationBarItems(leading: HStack {
Spacer()
Image("money")
.resizable()
.frame(width: 50, height: 50, alignment: .center)
Spacer()
}
.frame(width: geometry.size.width)
)
}
}
}
}
Try this...
How to put a logo in NavigationView in swiftui?
This shows how to handle adding an Image to NavigationView in SwiftUI. Hope it helps.