i was not happy with the previous design so i wanted to change the code a little bit but when i tried this code below it started to give me an error. Swift UI error handling is not the best so i do not know how to fix it
here's the code
struct spanishfood: View {
#State private var stack1 =
[Image("spanish_omelette"),
Image("paella"),
Image("gazpacho"),
Image("patatas_bravas")]
#State private var names =
[Text("Spanish Omelette"),
Text("Paella"),
Text("Gazpacho"),
Text("Patatas Bravas")]
var views =
[AnyView(spanish_omelette()),
AnyView(paella()),
AnyView(gazpacho()),
AnyView(patatas_bravas())]
var body: some View {
GeometryReader { geometry in
ScrollView {
VStack(spacing: 10) {
Text("Spanish Food")
.font(.title)
.font(Font.system(size: 36, design: .serif))
.foregroundColor(.black)
.fontWeight(.thin)
.bold()
.italic()
.kerning(5)
.background(Color.white.opacity(0.6))
.shadow(radius: 31)
ForEach(0..<self.stack1.count) { index in
NavigationLink(destination: self.views[index]) {
VStack(spacing: 10) {
self.stack1[index]
.resizable()
.renderingMode(.original)
.frame(width: UIScreen.screenWidth, height: 300)
.clipShape(RoundedRectangle())
self.names[index].foregroundColor(.white)
.bold()
}.animation(.interpolatingSpring(stiffness: 50, damping: 1))
}
}
}.frame(width: geometry.size.width)
}
}
}
}
previously the shape was circular and frame was much smaller
By code reading this is .clipShape(RoundedRectangle()), because RoundedRectangle has not empty arguments constructor. The possible fix is as below
.clipShape(RoundedRectangle(cornerRadius: 12))
Related
I'd like to implement an animation in SwiftUI that "reveals" the content of a view to enable expand/collapse functionality. The content of the view I want to collapse and expand is complex: It's not just a simple box, but it's a view hierarchy of dynamic height and content, including images and text.
I've experimented with different options, but it hasn't resulted in the desired effect. Usually what happens is that when I "expand", the whole view was shown right away with 0% opacity, then gradually faded in, with the buttons under the expanded view moving down at the same time. That's what happened when I was using a conditional if statement that actually added and removed the view. So that makes sense.
I then experimented with using a frame modifier: .frame(maxHeight: isExpanded ? .infinity : 0). But that resulted in the contents of the view being "squished" instead of revealed.
I made a paper prototype of what I want:
Any ideas on how to achieve this?
Something like this might work. You can modify the height of what you want to disclose to be 0 when hidden or nil when not so that it'll go for the height defined by the views. Make sure to clip the view afterwards so the contents are not visible outside of the frame's height when not disclosed.
struct ContentView: View {
#State private var isDisclosed = false
var body: some View {
VStack {
Button("Expand") {
withAnimation {
isDisclosed.toggle()
}
}
.buttonStyle(.plain)
VStack {
GroupBox {
Text("Hi")
}
GroupBox {
Text("More details here")
}
}
.frame(height: isDisclosed ? nil : 0, alignment: .top)
.clipped()
HStack {
Text("Cancel")
Spacer()
Text("Book")
}
}
.frame(maxWidth: .infinity)
.background(.thinMaterial)
.padding()
}
}
No, this wasn't trying to match your design, either. This was just to provide a sample way of creating the animation.
Consider the utilization of DisclosureGroup. The following code should be a good approach to your idea.
struct ContentView: View {
var body: some View {
List(0...20, id: \.self) { idx in
DisclosureGroup {
HStack {
Image(systemName: "person.circle.fill")
VStack(alignment: .leading) {
Text("ABC")
Text("Test Test")
}
}
HStack {
Image(systemName: "globe")
VStack(alignment: .leading) {
Text("ABC")
Text("X Y Z")
}
}
HStack {
Image(systemName: "water.waves")
VStack(alignment: .leading) {
Text("Bla Bla")
Text("123")
}
}
HStack{
Button("Cancel", role: .destructive) {}
Spacer()
Button("Book") {}
}
} label: {
HStack {
Spacer()
Text("Expand")
}
}
}
}
The result looks like:
I coded this in under 5 minutes. So of course the design can be optimized to your demands, but the core should be understandable.
import SwiftUI
struct TaskViewCollapsible: View {
#State private var isDisclosed = false
let header: String = "Review Page"
let url: String
let tasks: [String]
var body: some View {
VStack {
HStack {
VStack(spacing: 5) {
Text(header)
.font(.system(size: 22, weight: .semibold))
.foregroundColor(.black)
.padding(.top, 10)
.padding(.horizontal, 20)
.frame(maxWidth: .infinity, alignment: .leading)
Text(url)
.font(.system(size: 12, weight: .regular))
.foregroundColor(.black.opacity(0.4))
.padding(.horizontal, 20)
.frame(maxWidth: .infinity, alignment: .leading)
}
Spacer()
Image(systemName: self.isDisclosed ? "chevron.up" : "chevron.down")
.padding(.trailing)
.padding(.top, 10)
}
.onTapGesture {
withAnimation {
isDisclosed.toggle()
}
}
FetchTasks()
.padding(.horizontal, 20)
.padding(.bottom, 5)
.frame(height: isDisclosed ? nil : 0, alignment: .top)
.clipped()
}
.background(
RoundedRectangle(cornerRadius: 8)
.fill(.black.opacity(0.2))
)
.frame(maxWidth: .infinity)
.padding()
}
#ViewBuilder
func FetchTasks() -> some View {
ScrollView(.vertical, showsIndicators: true) {
VStack {
ForEach(0 ..< tasks.count, id: \.self) { value in
Text(tasks[value])
.font(.system(size: 16, weight: .regular))
.foregroundColor(.black)
.padding(.vertical, 0)
.frame(maxWidth: .infinity, alignment: .leading)
}
}
}
.frame(maxHeight: CGFloat(tasks.count) * 20)
}
}
struct TaskViewCollapsible_Previews: PreviewProvider {
static var previews: some View {
TaskViewCollapsible(url: "trello.com", tasks: ["Hello", "Hello", "Hello"])
}
}
struct CircleTestView: View {
let diameter: CGFloat = 433
var body: some View {
ZStack {
Color(.yellow)
.ignoresSafeArea()
VStack {
Circle()
.fill(Color(.green))
.frame(width: diameter, height: diameter)
.padding(.top, -(diameter / 2))
Spacer()
}
VStack {
Spacer()
Button {} label: {
Color(.red)
.frame(height: 55)
.padding([.leading, .trailing], 16)
}
}
}
}
}
The code above creates the first image, yet for some reason if I remove the line the sets the frame for the Circle (ie. .frame(width: diameter, height: diameter)) I get the second image.
2.
I want the circle how it is in the first screen, and the button how it is in the second screen, but can't seem to achieve this. Somehow setting the frame of the Circle is affecting the other views, even though they're in a ZStack. Is this a bug with ZStacks, or am I misunderstanding how they work?
Lets call this one approach a:
struct CircleTestView: View {
let diameter: CGFloat = 433
var body: some View {
ZStack {
Color(.yellow)
.ignoresSafeArea()
VStack {
Circle()
.fill(Color(.green))
.frame(width: diameter, height: diameter)
.padding(.top, -(diameter / 2))
Spacer()
}
VStack {
Spacer()
Button {} label: {
Color(.red)
.frame(height: 55)
}
}
.padding(.horizontal, 16)
}
}
}
Lets call this one approach b:
struct CircleTestView: View {
let diameter: CGFloat = 433
var body: some View {
ZStack {
Color(.yellow)
.ignoresSafeArea()
VStack {
Circle()
.fill(Color(.green))
.offset(x: 0, y: -(diameter / 1.00))
// increment/decrement the offset by .01 example:
// .offset(x: 0, y: -(diameter / 1.06))
Spacer()
}
VStack {
Spacer()
Button {} label: {
Color(.red)
.frame(height: 55)
.padding([.leading, .trailing], 16)
}
}
}
}
}
A combination of the two approaches would land you at approach c.
Do any of these achieve what you are looking for?
I'm doing a login form in Swiftui, however when i try to add a form that contain picker for age the style get messed up and since im new to SwiftUI i didn't know how can i fix this problem?
How can i fix the picker style so it addapte with the Nickname field?
here it is the code that i tried:
#State var nickName: String = ""
#State var age: Int = 18
var body: some View {
VStack {
HStack {
Image(systemName: "person.circle.fill")
.foregroundColor(Color("ChatiwVeryLightBlue"))
.frame(width: 44, height: 44)
.background(Color.white)
.clipShape(RoundedRectangle(cornerRadius: 16, style: .continuous))
.shadow(color: Color.black.opacity(0.15), radius: 5, x: 0, y: 5)
.padding(.all, 10)
TextField("Nickname", text: $nickName)
.frame(maxWidth: .infinity)
.frame(height: 50)
}
Divider().padding(.leading, 80)
HStack {
Image(systemName: "person.circle.fill")
.foregroundColor(Color("ChatiwVeryLightBlue"))
.frame(width: 44, height: 44)
.background(Color.white)
.clipShape(RoundedRectangle(cornerRadius: 16, style: .continuous))
.shadow(color: Color.black.opacity(0.15), radius: 5, x: 0, y: 5)
.padding(.all, 10)
Form {
Section {
Picker(selection: $age, label: Text("Picker")) {
ForEach(18 ..< 99, id: \.self) { index in
Text("\(index)").tag(1)
}
}
}
}
}
// Age
// Country
// Male/Female
}
.background(BlurView(blurType: .systemMaterial))
.clipShape(RoundedRectangle(cornerRadius: 16, style: .continuous))
.padding()
.offset(y: 400)
Not sure if you are still working on this project, but here is a neat workaround:
struct ContentView: View {
#State private var age = 18
var body: some View {
NavigationView {
VStack {
Divider()
HStack {
NavigationLink(destination: AgePickerView(age: $age)) {
HStack {
Text("Age")
Spacer()
Text("\(age) >")
.padding(.trailing)
}
}
}
.foregroundColor(.gray)
Divider()
}
.padding(.leading, 80)
}
}
struct AgePickerView: View {
#Binding var age: Int
var body: some View {
List(18..<99) { index in
Button(action: {
self.age = index
}) {
HStack {
Text("\(index)")
Spacer()
if index == age {
Image(systemName: "checkmark")
.foregroundColor(.blue)
}
}
}
}
}
}
}
To get the same NavigationView style but remove the Form style, you need to wrap a NavigationLink in a NavigationView.
The little > sign I put at the end of the Text view in the NavigationLink doesn't perfectly match the one in the Form style, so you can look around for an image that is more similar if you would like.
The AgePickerView is pretty straightfoward; it's just a list of buttons that are modifying a binding to the original state variable in ContentView through tap gestures. The checkmark is there to imitate a Picker view.
The best part of this is that you don't have to worry about all that index shifting with a picker.
For a SwiftUI layout in a macOS app, I have three Rectangles as shown below:
The code to produce this layout is:
import SwiftUI
struct ContentView: View {
var body: some View {
VStack {
HStack {
ZStack {
Rectangle()
.fill(Color.purple)
.frame(width: 20)
Text("1")
.font(.subheadline)
.foregroundColor(.white)
}
ZStack {
Rectangle()
.fill(Color.orange)
Text("2")
.font(.subheadline)
.foregroundColor(.white)
}
}
HStack {
ZStack {
Rectangle()
.fill(Color.red)
.frame(height: 20)
Text("3")
.font(.subheadline)
.foregroundColor(.white)
}
}
}
.frame(minWidth: 400, minHeight: 250)
}
}
My objective is for Rectangle 1 to be the same height as Rectangle 2 and for Rectangle 3 to be the same width as Rectangle 2. The size relationships between the rectangles should stay the same as the window size is changed. When done correctly, the final result should look like the following:
How can I accomplish this in SwiftUI?
Here is a working approach, based on view preferences. Tested with Xcode 11.4 / macOS 10.15.6
struct ViewWidthKey: PreferenceKey {
typealias Value = CGFloat
static var defaultValue: CGFloat { 0 }
static func reduce(value: inout Value, nextValue: () -> Value) {
value = value + nextValue()
}
}
struct ContentView: View {
#State private var boxWidth = CGFloat.zero
var body: some View {
VStack {
HStack {
ZStack {
Rectangle()
.fill(Color.purple)
.frame(width: 20)
Text("1")
.font(.subheadline)
.foregroundColor(.white)
}
ZStack {
Rectangle()
.fill(Color.orange)
Text("2")
.font(.subheadline)
.foregroundColor(.white)
}
.background(GeometryReader {
Color.clear.preference(key: ViewWidthKey.self,
value: $0.frame(in: .local).size.width) })
}
HStack {
ZStack {
Rectangle()
.fill(Color.red)
.frame(height: 20)
Text("3")
.font(.subheadline)
.foregroundColor(.white)
}.frame(width: boxWidth)
}.frame(maxWidth: .infinity, alignment: .bottomTrailing)
}
.onPreferenceChange(ViewWidthKey.self) { self.boxWidth = $0 }
.frame(minWidth: 400, minHeight: 250)
}
}
I created a modal but it seems to have a bug on the selection. When scrolling the left, it scrolls the right, I have to go to the very edge of the left to be able to scroll, this is how it looks:
import SwiftUI
struct ContentView: View {
#State var showingModal = false
#State var hours: Int = 0
#State var minutes: Int = 0
var body: some View {
ZStack {
VStack {
Button("Show me"){
self.showingModal = true
}
if $showingModal.wrappedValue {
VStack(alignment: .center) {
ZStack{
Color.black.opacity(0.4)
.edgesIgnoringSafeArea(.vertical)
// this one is it
VStack(spacing: 20) {
Text("Time between meals")
.bold().padding()
.frame(maxWidth: .infinity)
.background(Color.yellow)
.foregroundColor(Color.white)
HStack {
Spacer()
VStack {
Picker("", selection: $hours){
ForEach(0..<4, id: \.self) { i in
Text("\(i) hours").tag(i)
}
}
.frame(width: 150, height: 120)
.clipped()
}
VStack {
Picker("", selection: $minutes){
ForEach(0..<60, id: \.self) { i in
Text("\(i) min").tag(i)
}
}
.frame(width: 150, height: 120)
.clipped()
}
}
Spacer()
Button(action: {
self.showingModal = false
}){
Text("Close")
} .padding()
}
.frame(width:300, height: 300)
.background(Color.white)
.cornerRadius(20).shadow(radius: 20)
}
}
}
}
}
}
}
How can I fix that little bug? I tried playing around with the layout but no use... any help would be appreciated
What if I told you the reason your Picker not working was this line?
.cornerRadius(20).shadow(radius: 20)
Unfortunately, SwiftUI is still quite buggy and sometimes it doesn't do what it is supposed to do and especially Pickers are not that reliable. I guess we'll need to wait and see the next iteration of SwiftUI, but for now you can replace that line with the code below:
.mask(RoundedRectangle(cornerRadius: 20))
.shadow(radius: 20)
There are just modifiers which affect all view hierarchy (ie. all subviews) that can change resulting layout/presentation/behaviour. And .cornerRadius and .shadow are such type modifiers.
The solution is to apply (as intended) those modifiers only to entire constructed view, and here it is
.compositingGroup() // <<< fix !!
.cornerRadius(20).shadow(radius: 20)
where .compositionGroup is intended to make above view hierarchy flat rendered and all below modifiers applied to only to that flat view.