to make it short: I want to have the same view of the list like in the first image i shared. But when I add a navigation bar item the list looks strange to me. It this a bug of the new version of Swift/XCode or needs something to be changed?
Code:
import SwiftUI
import CoreData
struct ContentView: View {
var body: some View {
NavigationView {
List{
Text("test1")
Text("test2")
Text("test3")
}
.navigationTitle("Test")
// .navigationBarItems(leading:
// Text("Test")
// )
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
Try using .navigationViewStyle as below:
struct ContentView: View {
#State private var isFullScreen = false
var body: some View {
NavigationView {
List{
Text("One")
Text("Two")
}
.navigationTitle("Testt")
.navigationBarItems(leading: Text("Add"))
}
.navigationViewStyle(StackNavigationViewStyle())
}
}
Hey! Give This A Try!
var body: some View {
NavigationView {
List{
Text("One")
Text("Two")
}
.navigationTitle("Testt, displayMode: .inline)
.navigationBarItems(leading: Text("Add"))
}
}
}
Related
I have two pieces of test code to check that things worked out. Basically I wanted to navigate from one view to a specific tag on a TabView page. Everything worked out until I put an init in the destination file. Is there a way to do this so adding an init won't break things? Here are the test files:
import SwiftUI
struct ContentView: View {
#State var selectedView = ""
var body: some View {
NavigationView {
NavigationLink("go", destination: PageTwo(selectedView: "three"))
.foregroundColor(Color.black)
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
and
import SwiftUI
struct PageTwo: View {
#State var selectedView = ""
// Adding this breaks the link between the files -> init(){}
var body: some View {
TabView(selection: $selectedView) {
Button("Show Second View") {
selectedView = "two"
}
.padding()
.tabItem {
Label("First", systemImage: "1.circle")
}
.tag("one")
Button("Show First View") {
selectedView = "one"
}
.padding()
.tabItem {
Label("Second", systemImage: "2.circle")
}
.tag("two")
Button("Show First View") {
selectedView = "one"
}
.padding()
.tabItem {
Label("Third", systemImage: "3.circle")
}
.tag("three")
}
}
}
struct PageTwo_Previews: PreviewProvider {
static var previews: some View {
PageTwo()
}
}
Thanks for any help.
Problem
I would like to be able to change the number of columns in a Navigation View depending on the sidebar selection. i.e. Most views will have the desired 3-column layout (sidebar > list > detail) but one will have a two column layout (sidebar > detail). I tried to set this up directly in the top layer of the navigation view but this didn't change anything.
NavigationView{
SidebarView()
if selection != .explore {
ListView()
}
DetailView()
}
In the above example, if the selection is 'explore' there should only be a sidebar and a detail view.
Any ideas on how to achieve this?
Code to reproduce
I would want "searchView" to take up the full width. Meaning just a sidebar and search view should appear
Run on macOS or iPadOS
import SwiftUI
enum SidebarSelection {
case library
case notes
case search
}
struct ContentView: View {
#State var selection : SidebarSelection? = SidebarSelection.library
var body: some View {
NavigationView {
List {
NavigationLink(destination: ListView(), tag: SidebarSelection.library, selection: $selection){
Label("Library", systemImage: "book")
}
.tag(SidebarSelection.library)
NavigationLink(destination: ListView(), tag: SidebarSelection.notes, selection: $selection){
Label("Notes", systemImage: "doc.text")
}
.tag(SidebarSelection.notes)
NavigationLink(destination: SearchView(), tag: SidebarSelection.search, selection: $selection){
Label("Search", systemImage: "magnifyingglass")
}
.tag(SidebarSelection.search)
}
.listStyle(SidebarListStyle())
Text("List View")
if selection != .search {
Text("Detail View")
}
}
}
}
struct ListView: View {
var body: some View{
List {
ForEach(0..<10){ index in
NavigationLink(destination: Text("DetailView: \(index)")){
Text("Link to \(index) detail view")
}
}
}
}
}
struct SearchView: View {
var body: some View {
Text("Full width search view")
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
What you can do is quite easy actually, to achieve this, you just have to be bit more specific for SwiftUI and use the #ViewBuilder property wrapper.
struct ContentView: View {
#ViewBuilder
var body: some View {
if(twoColumns == true){
NavigationView{
SidebarView()
DetailView()
}
} else {
NavigationView{
SidebarView()
ListView()
DetailView()
}
}
}
}
I'm following through some swiftUI tutorial and I couldn't figure out what this meant.
This was the very first step, and I haven't done anything other than adding the NavigationView. How do I resolve this?
That's just container, you need some content inside, If you are just trying something out try following:
var body: some View {
NavigationView {
Text("Testing")
}
}
You cannot have an empty NavigationView. Add something inside.
struct ContentView: View {
var body: some View {
NavigationView {
Text("Text here")
}
}
}
FIRST: Add new SwiftUI-View (Name: MapView.swift without code-changing )
SECOND: Add new SwiftUI-View (Name: SecondView.swift)
THEN Change ContentView and SecondView:
a) ContentView.swift
import SwiftUI
struct ContentView: View {
var body: some View {
VStack {
MapView() // on upper Screen will appear: "Hello World"
NavigationView {
NavigationLink(destination: SecondView()) {
VStack {
Text("click here")
.fontWeight(.heavy)
.font(.largeTitle)
.padding()
Text("go to screen II")
}
}
} //End of NavigationView
}// End of VStack
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
VStack {
ContentView()
}
}
}
b) SecondView.swift
import SwiftUI
struct SecondView: View {
var body: some View {
VStack {
Text("Screen II")
.fontWeight(.heavy)
.foregroundColor(.blue)
.font(.largeTitle)
.padding()
Text("you changed it")
Text("GRATULATION!")
}
}
}
struct SecondView_Previews: PreviewProvider {
static var previews: some View {
SecondView()
}
}
c) MapView.swift
import SwiftUI
struct MapView: View {
var body: some View {
Text(/*#START_MENU_TOKEN#*/"Hello, World!"/*#END_MENU_TOKEN#*/)
}
}
struct MapView_Previews: PreviewProvider {
static var previews: some View {
MapView()
}
}
Im trying to link a button action in SomeView1() to navigate to a someView2() without having the back button at the top of the screen. Instead, I want to add another button in SomeView2() that will navigate back to SomeView1(). is this possible in SwiftUI yet?
SomeView1()
struct SomeView1: View {
var body: some View {
NavigationView {
VStack {
//...view's content
NavigationLink(destination: SomeView2()) {
Text("go to SomeView2")
}
Spacer()
}
}
}
}
SomeView2()
struct SomeView2: View {
var body: some View {
NavigationView {
VStack {
//...view's content
NavigationLink(destination: SomeView1()) {
Text("go to SomeView1")
}
Spacer()
}
}
}
}
this is what it looks like:
The right way to get what you want here is to use the presentationMode environment variable:
import SwiftUI
struct View2: View {
#Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
var body: some View {
VStack {
Button(action: {
self.presentationMode.wrappedValue.dismiss()
}) {
Text("POP")
}
}
.navigationBarTitle("")
.navigationBarBackButtonHidden(true)
.navigationBarHidden(true)
}
}
struct ContentView: View {
var body: some View {
NavigationView {
NavigationLink(destination: View2()) {
Text("PUSH")
.navigationBarTitle("")
.navigationBarHidden(true)
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
You can do something like this in SomeView2():
NavigationView {
VStack {
//...view's content
NavigationLink(destination: SomeView1()) {
Text("go to SomeView1")
}
Spacer()
}
}.navigationBarBackButtonHidden(true)
I believe that you should use only one NavigationView for the whole navigation process. Now you have three NavigationViews inside each other, which produces three back buttons.
So in your case it would become something like this:
struct SomeView1InsideNavigationView: View { // This should be the first view you present
var body: some View {
NavigationView { // Use NavigationView only once
SomeView1()
}
}
}
struct SomeView1: View {
var body: some View {
VStack { // Do *not* use NavigationView here
//...view's content
NavigationLink(destination: SomeView2()) {
Text("go to SomeView2")
}
Spacer()
}
}
}
struct SomeView2: View {
var body: some View {
VStack { // Do *not* use NavigationView here
//...view's content
NavigationLink(destination: SomeView1()) {
Text("go to SomeView1")
}
Spacer()
}
}
}
Learning to SwiftUI. Trying to navigate to a new view from navigation bar buttton clicked.
The sample code below:
var body: some View {
NavigationView {
List(0...< 5) { item in
NavigationLink(destination: EventDetails()){
EventView()
}
}
.navigationBarTitle("Events")
.navigationBarItems(trailing:
NavigationLink(destination: CreateEvent()){
Text("Create Event")
}
)
}
}
Three steps got this working for me : first add an #State Bool to track the showing of the new view :
#State var showNewView = false
Add the navigationBarItem, with an action that sets the above property :
.navigationBarItems(trailing:
Button(action: {
self.showNewView = true
}) {
Text("Go To Destination")
}
)
Finally add a navigation link somewhere in your view code (this relies on also having a NavigationView somewhere in the view stack)
NavigationLink(
destination: MyDestinationView(),
isActive: $showNewView
) {
EmptyView()
}.isDetailLink(false)
Put the NavigationLink into the label of a button.
.navigationBarItems(
trailing: Button(action: {}, label: {
NavigationLink(destination: NewView()) {
Text("")
}
}))
This works for me:
.navigationBarItems(trailing: HStack { AddButton(destination: EntityAddView()) ; EditButton() } )
Where:
struct AddButton<Destination : View>: View {
var destination: Destination
var body: some View {
NavigationLink(destination: self.destination) { Image(systemName: "plus") }
}
}
It is an iOS13 bug at the moment: https://forums.developer.apple.com/thread/124757
The "sort-of" workaround can be found here: https://stackoverflow.com/a/57837007/4514671
Here is my solution:
MasterView -
import SwiftUI
struct MasterView: View {
#State private var navigationSelectionTag: Int? = 0
var body: some View {
NavigationView {
VStack {
NavigationLink(destination: DestinationView(), tag: 1, selection: self.$navigationSelectionTag) {
EmptyView()
}
Spacer()
}
.navigationBarTitle("Master")
.navigationBarItems(trailing: Button(action: {
self.navigationSelectionTag = 1
}, label: {
Image(systemName: "person.fill")
}))
}
}
}
struct MasterView_Previews: PreviewProvider {
static var previews: some View {
MasterView()
}
}
And the DetailsView -
import SwiftUI
struct DetailsView: View {
var body: some View {
Text("Hello, Details!")
}
}
struct DetailsView_Previews: PreviewProvider {
static var previews: some View {
DetailsView()
}
}