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i try to make 'showing and hiding views with transitions' in Animations (with swiftUI) ;
import SwiftUI
struct ContentView: View {
#State private var isShowingRed = false
var body: some View {
VStack {
Button("tap me") {
withAnimation {
isShowingRed.toggle()
}
}
if isShowingRed {
Rectangle()
.fill(.red)
.frame(width: 200, height: 200)
transition(.asymmetric(insertion: .scale, removal: .opacity))
}
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
but got error like ;
An unknown crash has occurred, check back for more information. How to fix that erro,any idea?
Thanks.
It looks like you forgot to put a . before transition(.asymmetric(insertion: .scale, removal: .opacity)).
That might be why.
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I want to show custom drop down menu very attractive view but it does not work when I write the code as I want.
This is drop down menu approach but does not work can anyone tell the solution in any others way also.
struct DropDownList:View{
var body: some View{
Menu(content: {
HStack{
Image(systemName: "eye")
Text("Eye Clinic")
}
HStack{
Image("neuro")
Text("Neuro Hospital")
}
}, label: {
Text("Hospitals")
})
}
}
Your question isn't clear, but the menu you show in the image can be created as follows:
struct ContentView: View {
var body: some View {
HStack {
Text("Something")
DropDownList()
}
}
}
struct DropDownList:View {
var body: some View {
Menu {
Button {
} label: {
Label("Edit", systemImage: "square.and.pencil")
}
Button {
} label: {
Label("Delete", systemImage: "trash")
}
} label: {
Image(systemName: "ellipsis")
}
}
}
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I wanted to ask how to make this navigation button(link) to be in the right up corner?
struct ContentView: View {
var body: some View {
NavigationView {
NavigationLink(destination: NoteView(), label: {
Text("+")
.bold()
.frame(width: 30, height: 30)
.background(Color.black)
.foregroundColor(.white)
.cornerRadius(10)
})
}
}
}
I tried using ZStack, but it didn't work. I imagine it can be done using spacer, but don't figure out how
To align it in the upper right corner, use a combination of both a VStack and an HStack, with spacers.
Here's how this could be done:
VStack {
HStack {
Spacer() // PUSHES CONTENT TO THE RIGHT
Text("+")
}
Spacer() // PUSHES CONTENT UPWARDS
}
Or...
HStack {
Spacer() // PUSHES CONTENT RIGHT
VStack {
Text("+")
Spacer() // PUSHED CONTENT UP
}
}
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Closed 2 years ago.
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I already have an animation made in AfterEffects that I think Lottie can turn into a format I can use for my app. What I am wondering is how can I make the app start performing this animation when it is opened until the app is done loading?
Simply show the animation view instead of your content view while it's loading
example:
struct ContentView: View {
#State var isLoading = true
var body: some View {
VStack {
if isLoading {
LoadingView()
} else {
DoneLoadingView()
}
}.onAppear {
DispatchQueue.main.asyncAfter(deadline: .now() + 2) {
isLoading = false
}
}
}
}
struct LoadingView: View {
var body: some View {
ProgressView()
}
}
struct DoneLoadingView: View {
var body: some View {
VStack {
Text("Hello, world!")
}
}
}
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Closed 3 years ago.
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how can I add a Button in SwiftUI below a List so that it looks like in the Note app:
I tried it with a Stack but this did not work.
Here is simple demo:
struct DemoListWithButton: View {
var body: some View {
NavigationView {
VStack(alignment: .trailing) {
List(0..<100) { i in
Text("Item \(i)")
}
.navigationBarTitle("Title")
Button("Button") {}
.padding()
}
}
}
}
struct DemoListWithButton_Previews: PreviewProvider {
static var previews: some View {
DemoListWithButton()
}
}
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Closed 3 years ago.
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I am setting NavigationLink for Item,but not work with image disappeared.
struct Items: View {
var landmarks: [Landmark]
var body: some View {
ScrollView(.horizontal, showsIndicators: false) {
HStack {
ForEach(landmarks) { landmark in
//加了这个导航就看不到图片了，CategoryHome 也不显示图片，
//NavigationLink(destination: LandmarkDetail(landmark: landmark)) {
Item(landmark: landmark)
//}
}
}
}
}
}
You have to embed your Scrollview into a NavigationView or it will not work
struct Items: View {
var landmarks: [Landmark]
var body: some View {
NavigationView {
ScrollView(.horizontal, showsIndicators: false) {
HStack {
ForEach(landmarks) { landmark in
//加了这个导航就看不到图片了，CategoryHome 也不显示图片，
NavigationLink(destination: LandmarkDetail(landmark: landmark)) {
Item(landmark: landmark)
}
}
}
}
}
}
}
Here is the apple tutorial for creating navigation is SwiftUI