I am trying to implement list reordering, basic code example:
import SwiftUI
struct ContentView: View {
#State var items = [
"One",
"Two",
"Three"
]
var body: some View {
NavigationStack {
ZStack {
Color.gray
.ignoresSafeArea()
List($items, id: \.self, editActions: .move) { $item in
ListItem(text: item)
}
.scrollContentBackground(.hidden)
.listStyle(.plain)
}
.navigationTitle("Test")
.navigationBarTitleDisplayMode(.inline)
}
}
}
struct ListItem: View {
let text: String
var body: some View {
Text(text)
.frame(maxWidth: .infinity)
.foregroundColor(.white)
.padding()
.background(.blue)
.clipShape(RoundedRectangle(cornerRadius: 4.0))
.listRowSeparator(.hidden)
.listRowBackground(Color.clear)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
It all works fine and well however when I long press to begin the drag gesture the background for the list item appears black. I have added all the modifiers such as listRowBackground and scrollContentBackground but the problem persists. Any ideas what I'm doing wrong here?
Use your page background color (gray) for your listRowBackground modifier.
Text(text)
.frame(maxWidth: .infinity)
.foregroundColor(.white)
.padding()
.background(.blue)
.clipShape(RoundedRectangle(cornerRadius: 4.0))
.listRowSeparator(.hidden)
.listRowBackground(Color.gray)
I have problem with making this itemView to navigationLink. I need onTapGesture to open next list
https://github.com/reddogwow/test/blob/main/MainMenu
var objectView: some View {
VStack {
Text(objectname)
.foregroundColor(.white)
.font(.system(size: 25, weight: .medium, design: .rounded))
Image(objectphoto)
.resizable()
.frame(width: 100, height: 100)
.clipShape(Circle())
.overlay(Circle().stroke(Color.white, lineWidth: 4))
}
.frame(height: 200)
.frame(maxWidth: .infinity)
.background(Color.blue)
}
Best edit will be where i can use Destination name from item (navMenu string)
I need something like this
var body: some View {
// NavigationView {
let columns = Array(
repeating: GridItem(.flexible(), spacing: spacing),
count: numbersOfColumns)
ScrollView {
HStack {
personView
petView
}
LazyVGrid(columns: columns, spacing: spacing) {
ForEach(items) { item in
NavigationLink(destination: item.navMenu) {
Text("")
} label: {
ItemView(item: item)
}
}
}
.padding(.horizontal)
}
.background(Color.blue.ignoresSafeArea())
.navigationTitle("")
// }
}
Where line NavigationLink(destination: HERE MUST BE STRING TO navMenu) But now im in cycle lot of fails
I have some menus called
Menu1.swift
Menu2.swift
Menu3.swift
I need open this menu after click on Grid menu.
But destination: Must be filled with name from item in code.
struct item: Identifiable {
let id = UUID()
let title: String
let image: String
let imgColor: Color
let navMenu : String
}
item(title: "Menu 1", image: "img1", imgColor: .orange, navMenu: "Menu1"),
I thing I have bad written buy maybe only small mistake
or maybe make it like this?
var navMenuDest = destination: + item.navMenu
this will be
NavigationLink(navMenuDest) {
in finale looks like
NavigationLink(destination: Menu1)
You must have a NavigationView in the hierarchy to use NavigationLink. To make each ItemView navigate to a new view when tapped, we use NavigationLink as shown below.
Code:
struct MainMenu: View {
/* ... */
var body: some View {
NavigationView {
let columns = Array(
repeating: GridItem(.flexible(), spacing: spacing),
count: numbersOfColumns)
ScrollView {
HStack {
personView
objectView
}
LazyVGrid(columns: columns, spacing: spacing) {
ForEach(items) { item in
NavigationLink {
Text("Some destination view here...\n\nItem: \(String(describing: item))")
} label: {
ItemView(item: item)
}
}
}
.padding(.horizontal)
}
.background(Color.blue.ignoresSafeArea())
.navigationTitle("Main Menu")
}
}
}
Result:
I am trying to create sticky footer in swiftUI where other part of screen is scrollable but in footer there is one view with buttons and other element which should be fixed.
Thank You for help.
If I understand correctly, what you want to do is stack vertically (VStack)
a Scrollview
another VStack (with the Toggle and the Button), aligned at the bottom :
VStack {
ScrollView {...} // 1
VStack { // 2
Toggle(...)
Button(...)
}
.frame(alignment: .bottom)
}
To take your example :
struct SwiftUIView: View {
#State private var checked: Bool = false
let text = String(repeating: "blabla ", count: 20)
var body: some View {
VStack {
ScrollView {
ForEach((1...100), id: \.self) {_ in
Text(text)
}
}
VStack {
Toggle(isOn: $checked, label: {
Text("I have read...")
})
Button("Enter") {
// action
}
.frame(maxWidth: .infinity)
.padding(.vertical)
.background(Color.red)
}
.padding()
.border(Color.black)
.frame(alignment: .bottom)
}
}
}
I have 2 views: PollCard and PollList (like list of polls)
In the PollCard view I have 2 buttons(images), that calls "answer" function:
HStack{
Button(action: {
self.answer()
print("Pressed first image")
}){
Image(poll.v1img)
.resizable()
.renderingMode(.original)
.scaledToFill()
.frame(width: 150, height: 200)
}.frame(width: 150, height: 200)
Button(action: { self.answer()}){
Image(poll.v2img )
.resizable()
.renderingMode(.original)
.frame(width: 150, height: 200)
}.frame(width: 150, height: 200).zIndex(4)
}
In the PollList view I have this simple list:
var body: some View {
HStack{
List(pollData) { poll in
PollCard(poll: poll)
}.padding()
}
}
But when I click the images in the list, it selects like all images and presses it
It is also very easy to check - terminal prints Pressed first image even if I've pressed only second image
What should I do to fix this?
As I mentioned in the comment section the workaround would be to substitute the HStack around the List with a ScrollView and the List with a ForEach:
struct ContentView: View {
struct Data: Identifiable {
var id: Int
}
#State var data = [Data(id: 0), Data(id: 1), Data(id: 2), Data(id: 3), Data(id: 4), Data(id: 5)]
var body: some View {
ScrollView {
ForEach(self.data) { data in
HStack {
Button(action: {
print("Pressed blue...")
}, label: {
Rectangle()
.foregroundColor(Color.blue)
.frame(width: 150, height: 200)
})
Button(action: {
print("Pressed red...")
}, label: {
Rectangle()
.foregroundColor(Color.red)
.frame(width: 150, height: 200)
})
}
}
}
}
}
I hope this helps!
this is an unexpected behavior of Button (or it is a bug?) in current SwiftUI (either on macOS or iOS).
The workaround in your case is simple, try to apply PlainButtonStyle for your buttons
import SwiftUI
struct ContentView: View {
var body: some View {
List {
Text("Hello, World!")
HStack {
Button(action: {
print("button1")
}) {
Color.yellow
}.buttonStyle(PlainButtonStyle())
Button(action: {
print("button2")
}) {
Color.green
}.buttonStyle(PlainButtonStyle())
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
The funny thing is that it is enough to apply the style on one button only ... or apply it to parent HStack :-)
changing ContentView ...
struct ContentView: View {
var body: some View {
List {
Text("Hello, World!")
HStack {
Button(action: {
print("button1")
}) {
Color.yellow
}
Button(action: {
print("button2")
}) {
Color.green
}
}
.buttonStyle(PlainButtonStyle())
.frame(height: 100)
Text("By by, World!")
}
}
}
you get
where each of buttons works as expected
Given this code:
import SwiftUI
struct ContentView: View {
var body: some View {
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.lineLimit(nil)
.font(.body)
Spacer()
}
.background(Color.red)
}
}
#if DEBUG
struct ContentView_Previews : PreviewProvider {
static var previews: some View {
ContentView()
}
}
#endif
It results in this interface:
How can I make the VStack fill the width of the screen even if the labels/text components don't need the full width?
A trick I've found is to insert an empty HStack in the structure like so:
VStack(alignment: .leading) {
HStack {
Spacer()
}
Text("Title")
.font(.title)
Text("Content")
.lineLimit(nil)
.font(.body)
Spacer()
}
Which yields the desired design:
Is there a better way?
Try using the .frame modifier with the following options:
.frame(
minWidth: 0,
maxWidth: .infinity,
minHeight: 0,
maxHeight: .infinity,
alignment: .topLeading
)
struct ContentView: View {
var body: some View {
VStack(alignment: .leading) {
Text("Hello World")
.font(.title)
Text("Another")
.font(.body)
Spacer()
}
.frame(
minWidth: 0,
maxWidth: .infinity,
minHeight: 0,
maxHeight: .infinity,
alignment: .topLeading
)
.background(Color.red)
}
}
This is described as being a flexible frame (see the documentation), which will stretch to fill the whole screen, and when it has extra space it will center its contents inside of it.
With Swift 5.2 and iOS 13.4, according to your needs, you can use one of the following examples to align your VStack with top leading constraints and a full size frame.
Note that the code snippets below all result in the same display, but do not guarantee the effective frame of the VStack nor the number of View elements that might appear while debugging the view hierarchy.
1. Using frame(minWidth:idealWidth:maxWidth:minHeight:idealHeight:maxHeight:alignment:) method
The simplest approach is to set the frame of your VStack with maximum width and height and also pass the required alignment in frame(minWidth:idealWidth:maxWidth:minHeight:idealHeight:maxHeight:alignment:):
struct ContentView: View {
var body: some View {
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.font(.body)
}
.frame(
maxWidth: .infinity,
maxHeight: .infinity,
alignment: .topLeading
)
.background(Color.red)
}
}
2. Using Spacers to force alignment
You can embed your VStack inside a full size HStack and use trailing and bottom Spacers to force your VStack top leading alignment:
struct ContentView: View {
var body: some View {
HStack {
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.font(.body)
Spacer() // VStack bottom spacer
}
Spacer() // HStack trailing spacer
}
.frame(
maxWidth: .infinity,
maxHeight: .infinity
)
.background(Color.red)
}
}
3. Using a ZStack and a full size background View
This example shows how to embed your VStack inside a ZStack that has a top leading alignment. Note how the Color view is used to set maximum width and height:
struct ContentView: View {
var body: some View {
ZStack(alignment: .topLeading) {
Color.red
.frame(maxWidth: .infinity, maxHeight: .infinity)
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.font(.body)
}
}
}
}
4. Using GeometryReader
GeometryReader has the following declaration:
A container view that defines its content as a function of its own size and coordinate space. [...] This view returns a flexible preferred size to its parent layout.
The code snippet below shows how to use GeometryReader to align your VStack with top leading constraints and a full size frame:
struct ContentView : View {
var body: some View {
GeometryReader { geometryProxy in
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.font(.body)
}
.frame(
width: geometryProxy.size.width,
height: geometryProxy.size.height,
alignment: .topLeading
)
}
.background(Color.red)
}
}
5. Using overlay(_:alignment:) method
If you want to align your VStack with top leading constraints on top of an existing full size View, you can use overlay(_:alignment:) method:
struct ContentView: View {
var body: some View {
Color.red
.frame(
maxWidth: .infinity,
maxHeight: .infinity
)
.overlay(
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.font(.body)
},
alignment: .topLeading
)
}
}
Display:
An alternative stacking arrangement which works and is perhaps a bit more intuitive is the following:
struct ContentView: View {
var body: some View {
HStack() {
VStack(alignment: .leading) {
Text("Hello World")
.font(.title)
Text("Another")
.font(.body)
Spacer()
}
Spacer()
}.background(Color.red)
}
}
The content can also easily be re-positioned by removing the Spacer()'s if necessary.
There is a better way!
To make the VStack fill the width of it's parent you can use a GeometryReader and set the frame. (.relativeWidth(1.0) should work but apparently doesn't right now)
struct ContentView : View {
var body: some View {
GeometryReader { geometry in
VStack {
Text("test")
}
.frame(width: geometry.size.width,
height: nil,
alignment: .topLeading)
}
}
}
To make the VStack the width of the actual screen you can use UIScreen.main.bounds.width when setting the frame instead of using a GeometryReader, but I imagine you likely wanted the width of the parent view.
Also, this way has the added benefit of not adding spacing in your VStack which might happen (if you have spacing) if you added an HStack with a Spacer() as it's content to the VStack.
UPDATE - THERE IS NOT A BETTER WAY!
After checking out the accepted answer, I realized that the accepted answer doesn't actually work! It appears to work at first glance, but if you update the VStack to have a green background you'll notice the VStack is still the same width.
struct ContentView : View {
var body: some View {
NavigationView {
VStack(alignment: .leading) {
Text("Hello World")
.font(.title)
Text("Another")
.font(.body)
Spacer()
}
.background(Color.green)
.frame(minWidth: 0, maxWidth: .infinity, minHeight: 0, maxHeight: .infinity, alignment: .topLeading)
.background(Color.red)
}
}
}
This is because .frame(...) is actually adding another view to the view hierarchy and that view ends up filling the screen. However, the VStack still does not.
This issue also seems to be the same in my answer as well and can be checked using the same approach as above (putting different background colors before and after the .frame(...). The only way that appears to actually widen the VStack is to use spacers:
struct ContentView : View {
var body: some View {
VStack(alignment: .leading) {
HStack{
Text("Title")
.font(.title)
Spacer()
}
Text("Content")
.lineLimit(nil)
.font(.body)
Spacer()
}
.background(Color.green)
}
}
The simplest way I manage to solve the issue was is by using a ZStack + .edgesIgnoringSafeArea(.all)
struct TestView : View {
var body: some View {
ZStack() {
Color.yellow.edgesIgnoringSafeArea(.all)
VStack {
Text("Hello World")
}
}
}
}
Way Number 1 -> Using MaxWidth & MaxHeight
import SwiftUI
struct SomeView: View {
var body: some View {
VStack {
Text("Hello, World!")
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(.red)
}
}
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
Way Number 2 -> Using Main Screen Bounds
import SwiftUI
struct SomeView: View {
var body: some View {
VStack {
Text("Hello, World!")
}
.frame(maxWidth: UIScreen.main.bounds.width, maxHeight: UIScreen.main.bounds.height)
.background(.red)
}
}
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
Way Number 3 -> Using Geometry Reader
import SwiftUI
struct SomeView: View {
var body: some View {
GeometryReader { geometryReader in
VStack {
Text("Hello, World!")
}
.frame(maxWidth: geometryReader.size.width, maxHeight: geometryReader.size.height)
.background(.red)
}
}
}
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
Way Number 4 -> Using Spacers
import SwiftUI
struct SomeView: View {
var body: some View {
VStack {
Text("Hello, World!")
HStack{
Spacer()
}
Spacer()
}
.background(.red)
}
}
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
EDIT: answer updated with simple (better) approach using .frame
Just use frame modifiers!
struct Expand: View {
var body: some View {
VStack(alignment: .leading) {
Text("Title")
.font(.title)
Text("Content")
.lineLimit(nil)
.font(.body)
}
.frame(maxWidth:.infinity,maxHeight:.infinity,alignment:.topLeading)
.background(Color.red)
}
}
note - you don't even need the spacer in the VStack!
note2 - if you don't want the white at top & bottom, then in the background use:
Color.red.edgesIgnoringSafeArea(.all)
use this
.edgesIgnoringSafeArea(.all)
A good solution and without "contraptions" is the forgotten ZStack
ZStack(alignment: .top){
Color.red
VStack{
Text("Hello World").font(.title)
Text("Another").font(.body)
}
}
Result:
You can do it by using GeometryReader
GeometryReader
Code:
struct ContentView : View {
var body: some View {
GeometryReader { geometry in
VStack {
Text("Turtle Rock").frame(width: geometry.size.width, height: geometry.size.height, alignment: .topLeading).background(Color.red)
}
}
}
}
Your output like:
One more alternative is to place one of the subviews inside of an HStack and place a Spacer() after it:
struct ContentView : View {
var body: some View {
VStack(alignment: .leading) {
HStack {
Text("Title")
.font(.title)
.background(Color.yellow)
Spacer()
}
Text("Content")
.lineLimit(nil)
.font(.body)
.background(Color.blue)
Spacer()
}
.background(Color.red)
}
}
resulting in :
This is a useful bit of code:
extension View {
func expandable () -> some View {
ZStack {
Color.clear
self
}
}
}
Compare the results with and without the .expandable() modifier:
Text("hello")
.background(Color.blue)
-
Text("hello")
.expandable()
.background(Color.blue)
This is what worked for me (ScrollView (optional) so more content can be added if needed, plus centered content):
import SwiftUI
struct SomeView: View {
var body: some View {
GeometryReader { geometry in
ScrollView(Axis.Set.horizontal) {
HStack(alignment: .center) {
ForEach(0..<8) { _ in
Text("🥳")
}
}.frame(width: geometry.size.width, height: 50)
}
}
}
}
// MARK: - Preview
#if DEBUG
struct SomeView_Previews: PreviewProvider {
static var previews: some View {
SomeView()
}
}
#endif
Result
I know this will not work for everyone, but I thought it interesting that just adding a Divider solves for this.
struct DividerTest: View {
var body: some View {
VStack(alignment: .leading) {
Text("Foo")
Text("Bar")
Divider()
}.background(Color.red)
}
}
Login Page design using SwiftUI
import SwiftUI
struct ContentView: View {
#State var email: String = "william#gmail.com"
#State var password: String = ""
#State static var labelTitle: String = ""
var body: some View {
VStack(alignment: .center){
//Label
Text("Login").font(.largeTitle).foregroundColor(.yellow).bold()
//TextField
TextField("Email", text: $email)
.textContentType(.emailAddress)
.foregroundColor(.blue)
.frame(minHeight: 40)
.background(RoundedRectangle(cornerRadius: 10).foregroundColor(Color.green))
TextField("Password", text: $password) //Placeholder
.textContentType(.newPassword)
.frame(minHeight: 40)
.foregroundColor(.blue) // Text color
.background(RoundedRectangle(cornerRadius: 10).foregroundColor(Color.green))
//Button
Button(action: {
}) {
HStack {
Image(uiImage: UIImage(named: "Login")!)
.renderingMode(.original)
.font(.title)
.foregroundColor(.blue)
Text("Login")
.font(.title)
.foregroundColor(.white)
}
.font(.headline)
.frame(minWidth: 0, maxWidth: .infinity)
.background(LinearGradient(gradient: Gradient(colors: [Color("DarkGreen"), Color("LightGreen")]), startPoint: .leading, endPoint: .trailing))
.cornerRadius(40)
.padding(.horizontal, 20)
.frame(width: 200, height: 50, alignment: .center)
}
Spacer()
}.padding(10)
.frame(minWidth: 0, idealWidth: .infinity, maxWidth: .infinity, minHeight: 0, idealHeight: .infinity, maxHeight: .infinity, alignment: .top)
.background(Color.gray)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
⚠️ Important Note!
🛑 All other solutions are just adding a frame around the content!
✅ but this solution changes the actual frame!
Simple and correct extension
You can use this modifier
.flexible(width: true, height: false)
Demo
💡Note how contents are aligned exactly as you assign in the original stack
The code behind this ( FlexibleViewModifier.swift )
extension View {
func flexible(width: Bool, height: Bool) -> some View {
self.modifier(MatchingParentModifier(width: width, height: height))
}
}
struct MatchingParentModifier: ViewModifier {
#State private var intrinsicSize: CGSize = UIScreen.main.bounds.size
private let intrinsicWidth: Bool
private let intrinsicHeight: Bool
init(width: Bool, height: Bool) {
intrinsicWidth = !width
intrinsicHeight = !height
}
func body(content: Content) -> some View {
GeometryReader { _ in
content.modifier(intrinsicSizeModifier(intrinsicSize: $intrinsicSize))
}
.frame(
maxWidth: intrinsicWidth ? intrinsicSize.width : nil,
maxHeight: intrinsicHeight ? intrinsicSize.height : nil
)
}
}
struct intrinsicSizeModifier: ViewModifier {
#Binding var intrinsicSize: CGSize
func body(content: Content) -> some View {
content.readIntrinsicContentSize(to: $intrinsicSize)
}
}
struct IntrinsicContentSizePreferenceKey: PreferenceKey {
static let defaultValue: CGSize = .zero
static func reduce(value: inout CGSize, nextValue: () -> CGSize) {
value = nextValue()
}
}
extension View {
func readIntrinsicContentSize(to size: Binding<CGSize>) -> some View {
background(
GeometryReader {
Color.clear.preference(
key: IntrinsicContentSizePreferenceKey.self,
value: $0.size
)
}
)
.onPreferenceChange(IntrinsicContentSizePreferenceKey.self) {
size.wrappedValue = $0
}
}
}
Here another way which would save time in your projects:
Much less code and reusable in compare to other answers which they are not reusable!
extension View {
var maxedOut: some View {
return Color.clear
.overlay(self, alignment: .center)
}
func maxedOut(color: Color = Color.clear, alignment: Alignment = Alignment.center) -> some View {
return color
.overlay(self, alignment: alignment)
}
}
use case:
struct ContentView: View {
var body: some View {
Text("Hello, World!")
.maxedOut
.background(Color.blue)
Text("Hello, World!")
.maxedOut(color: Color.red)
}
}
Just add Color.clear to the bottom of the VStack, simple as that :)
struct ContentView: View {
var body: some View {
VStack(alignment: .leading) {
Text("Title")
Color.clear
}
.background(Color.red)
}
}