I am trying to fit a long piece of text inside the screen but it keeps overflowing. Is there a way to wrap the text?
I tried using alignment to make it center but it still goes off the screen.
import SwiftUI
struct OnboardingPage3: View {
var body: some View {
ZStack {
Color("Onboarding")
.edgesIgnoringSafeArea(.all)
VStack {
Color("Onboarding")
.edgesIgnoringSafeArea(.all)
Image("HomeScreen")
.resizable()
.frame(width: 300, height: 600)
.padding(EdgeInsets(top: 0, leading: 0, bottom: 200, trailing: 0))
Text("This is your home screen where you can see how much progress you have made throughout the day as well as a streaks bar to keep track of how many days straight you have been exercising.")
.frame(alignment: .center)
}
}
}
}
struct OnboardingPage3_Previews: PreviewProvider {
static var previews: some View {
OnboardingPage3()
}
}
Your text isn't actually overflowing — it's just being truncated.
To prevent this you can use the fixedSize(horizontal:vertical:) modifier. I also made some other edits to your code — there's no need to use so many .edgesIgnoringSafeAreas, and ZStacks can have some unexpected side effects with positioning.
struct OnboardingPage3: View {
var body: some View {
VStack {
Image("HomeScreen")
.resizable()
.aspectRatio(contentMode: .fit) /// use this to maintain the aspect ratio
.frame(width: 200) /// now you only need to supply 1 dimension
Text("This is your home screen where you can see how much progress you have made throughout the day as well as a streaks bar to keep track of how many days straight you have been exercising.")
.fixedSize(horizontal: false, vertical: true)
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.padding(20)
.background(
Color.gray
.edgesIgnoringSafeArea(.all)
)
}
}
Result:
Related
So I have a ZStack that contains a ScrollView on the bottom and an HStack that's aligned at the top. It looks something like this:
ZStack {
ScrollView {
//Content
}
VStack {
HStack {
Spacer()
Circle()
.frame(width: 30, height: 30)
Spacer()
}
Spacer()
}
}
Now, I want that HStack to block any interaction with the ScrollView beneath it. I've noticed that when I set the background on the HStack to a non-clear color, it behaves as I'd like it to. However, if the background is clear, then the touches go through the HStack and interact with the ScrollView beneath it. I've also tried using .allowsHitTesting(true) on the HStack with no luck.
Any help is much appreciated!
https://i.stack.imgur.com/5Jzby.png
"...I've noticed that when I set the background on the HStack to a non-clear color, it behaves as I'd like it to.", then you could use Color.white.opacity(0.001)
instead of Color.clear or non-clear color
You can easily accomplish this by putting it in a VStack instead of a ZStack. The touches will be ignored as it's above the ScrollView. You can also have a look at .layoutPriority(), it may also be useful. Documentation is here.
struct ContentView: View {
var body: some View {
VStack {
HStack {
Spacer()
Circle()
.foregroundColor(Color.blue)
.frame(width: 30, height: 30)
Spacer()
}
.padding()
// or this does the same thing as the HStack two spacers
/*
Circle()
.foregroundColor(Color.blue)
.frame(width: 30, height: 30)
.frame(minWidth: 0, maxWidth: .infinity)
*/
Spacer()
ScrollView {
ForEach(1..<11) { value in
Text("\(value)")
}
}
}
}
}
I'm having trouble trying to center a single element to emulate the navigation modal with a close button.
I would like to center content without using a supporting Rectangle on the sides or spacers.
What i'm trying to achieve is whenever the text grow, if it reaches the left sides where there is the close xmark button it should try to push itself on the right where there is available space until it reaches the right border and after wrap itself if there are no available space on the both sides.
here are some pictures:
expected result 1
expected result 2
current solution short text
current solution long text
i tried using long and short text to test the content behaviour
Currently this is the start of the code and basically i would like to avoid to add the blue rectangle (that would be usually clear)
struct TestAlignmentSwiftUIView: View {
var body: some View {
HStack(spacing: 0) {
Rectangle().fill(Color.blue).frame(width: 44, height: 44)
Text("aaa eee aaa")
.background(Color.red)
.padding(5)
Button(action: {}, label: {
Image(systemName: "xmark")
.padding(15)
.frame(width: 44, height: 44)
.background(Color.yellow)
})
}
.background(Color.green)
}
}
What i've tried so far but doesn't resolve the issue if the code inside the text component grow:
Using a zstack where i place the text and the close button one on
top of each other but the button is pushed to the side using a spacer. It will work for small text or content but is not scalable if the text grows
var body: some View {
ZStack {
HStack {
Spacer()
Button(action: {}, label: {
Image(systemName: "xmark")
.padding(15)
.frame(width: 44, height: 44)
.background(Color.yellow)
})
}
Text("aaa eee aaa random long very long text that should wrap without overlapping. long text")
.background(Color.red)
.frame(maxWidth: .infinity, alignment: .center)
.padding(5)
.opacity(0.7)
}
.background(Color.green)
}
Using alignment guides :
i would create my own center alignment guide, then use this custom alignment on a vstack where i place my content plus a fake filler rectangle that should center the elements on the content side.
the problem is that with swiftui , as far i know, you can only align one descendant element, and doesn't support multiple custom alignments on the stack of elements. so i would have only the text centered or the side button aligned not both aligned one to the center and the other to the trailing edge. and if i put a spacer between them it will just mess the alignment created. If I try with small text they will be both attached.
Heres the code. try to comment the button and you will see that it will center itself or add spacer between them.
extension HorizontalAlignment {
private enum MyAlignment: AlignmentID {
static func defaultValue(in d: ViewDimensions) -> CGFloat {
d[HorizontalAlignment.center]
}
}
static let myAlignment = HorizontalAlignment(MyAlignment.self)
}
var body: some View {
VStack(alignment: .myAlignment, spacing: 0) {
HStack {
Text("aaa eee aaa random ")
.background(Color.red)
.frame(maxWidth: .infinity, alignment: .center)
.padding(5)
.alignmentGuide(.myhAlignment, computeValue: { dimension in
dimension[HorizontalAlignment.center]
})
Button(action: {}, label: {
Image(systemName: "xmark")
.padding(15)
.frame(width: 44, height: 44)
.background(Color.yellow)
})
}
.background(Color.green)
Rectangle()
.fill(Color.purple)
.frame(width: 10, height: 10, alignment: .center)
.alignmentGuide(.myhAlignment, computeValue: { dimension in
dimension[HorizontalAlignment.center]
})
}
}
Tried with a combination of geometry reader and/or anchor preferences to read with sizes of the text content and side button width and apply the appropriate center offset manually, but it seems too hacky and it never worked as expected without good results
If you're familiar with uikit this problem would be resolved using a
centerX on the container with a minor layout priority and a right constraint from the center to the
close button, and call it a day. But on swiftui it seems soo hard to
handle this simple cases.
So far i haven't found a solution without using a supporting fixed frame on the side that would work with both long and short text. that space is clearly visibile if you try to use long text. and it will leave the user to wonder why is not used.
¯\ (ツ)/¯
EDIT: added possible solution in the answers
From the #Yrb suggestion in the comments, here's what i came up that shrink the blue size so it will center on the available space.
I added a fake text underneath and tracked the size. and if it's over the available space i will take the difference and shrink the blu rectangle.
One thing to keep in mind is that the hidden content if contains some text should have linelimit 1, otherwise it will get a smaller size from wrapping itself.
And i just assume that i know the size of the close button (or at least one side) for center alignment, and even if i don't know it at compile time, i could probably use a preference key to get the size at run time, and have it dynamic.
But for the moment i think it's fine the result that i got.
but honestly i hope to find something more easier in the future.
#State var text: String = "aaa eee aaa"
#State private var fillerWidth: CGFloat = 44
// i assume i know the max size of the close button or at least one side
private let kCloseButtonWidth: CGFloat = 44
private struct FakeSizeTitlteContentKey: PreferenceKey {
static var defaultValue: CGFloat { .zero }
static func reduce(value: inout CGFloat, nextValue: () -> CGFloat) {
value = nextValue()
}
}
var body: some View {
ZStack(alignment: Alignment(horizontal: .center, vertical: .top)) {
GeometryReader { parentGeometry in
titleContent
.lineLimit(1) // hidden text must not wrap
.overlay(GeometryReader { proxyFake in
Color.clear.border(Color.black, width: 0.3)
.preference(key: FakeSizeTitlteContentKey.self, value: proxyFake.frame(in: .local).width
.onPreferenceChange(FakeSizeTitlteContentKey.self) { value in
let availableW = parentGeometry.frame(in: .local).width
let fillSpace = availableW - value - kCloseButtonWidth * 2
fillerWidth = min(kCloseButtonWidth, max(0, fillSpace))
}
})
}
.hidden()
VStack {
HStack(spacing: 0) {
Rectangle()
.fill(Color.blue)
.frame(width: fillerWidth, height: 44)
titleContent
.background(Color.green)
.multilineTextAlignment(.center)
.frame(maxWidth: .infinity, alignment: .center)
Button(action: {}, label: {
Image(systemName: "xmark")
.padding(15)
.frame(width: kCloseButtonWidth, height: kCloseButtonWidth)
.background(Color.yellow)
})
}
.coordinateSpace(name: "fullCont")
.background(Color.green)
TextEditor(text: $text)
.frame(maxHeight: 150, alignment: .center)
.border(Color.black, width: 1)
.padding(15)
Spacer()
}
}
}
#ViewBuilder var titleContent: some View {
HStack(spacing: 0) {
Text(text)
.background(Color.red)
.padding(.horizontal, 5)
}
}
In the following code snippet, the red circles obviously don't fit onto the screen and therefore only the trailing part of the HStack is shown. Instead of that behavior, I want the leading text of the HStack to always be visible and truncate the trailing red circles that don't fit into the available space (replaced with ...).
How can I do this?
struct ContentView: View {
var body: some View {
HStack {
Text("This text should always be visible")
.layoutPriority(1)
Spacer()
ForEach(0..<20) { index in
Image(systemName: "circle.fill")
.font(.body)
.foregroundColor(.red)
}
}
}
}
So I want this:
instead of this:
Can get everything except the ellipses with:
struct ContentView: View {
var body: some View {
HStack {
Text("This text should always be visible")
.fixedSize()
ForEach(0..<20) { index in
Image(systemName: "circle.fill")
.font(.body)
.foregroundColor(.red)
}
}
.frame(minWidth: 0, maxWidth: .infinity, alignment: .leading)
}
}
In order to get the ellipses you'll probably have to calculate frame sizes or try to get your images into an attributed string which could get pretty complicated. You might also consider a scroll view or grid.
I'm trying to build a user-expandable view that will show more of its content by increasing its height. To accomplish this I will add .clipped() so that the content shown out of its bounds will be hidden, just like you would add overflow: hidden; in CSS.
However, it seems like by default VStack is centering its children, so when the height is smaller than the sum of the children's height, they overflow in both the top and the bottom.
Here is an example of what I'm talking about:
struct ExandableView: View {
var body: some View {
VStack(spacing: 0) {
Rectangle()
.fill(Color.red)
.frame(height: 50)
.padding(.horizontal)
Rectangle()
.fill(Color.green)
.frame(height: 50)
.padding(.horizontal)
}
.frame(height: 90)
.background(Color.blue)
}
}
Is there any way to make it behave so that the red item (the first) is always inside the blue container and the children can only overflow from the bottom?
Change frame alignment according to ExandableView. like this
struct ExandableView: View {
var body: some View {
// Other VStack code
}
.frame(height: 90, alignment: isExpand ? .top : .center) //<--Here
.background(Color.blue)
}
}
So I'm trying to move the rectangle so that it looks like there's a little point at the bottom of the DatePicker() UI element:
import SwiftUI
struct TimeSelectorView: View {
#State private var selectedDay: Date = Date()
var body: some View {
VStack {
DatePicker(selection: $selectedDay, in: Date()..., displayedComponents: .date) {
Text("")
}.frame(width: UIScreen.main.bounds.width * 0.75)
.clipped()
.background(Color.white)
.cornerRadius(15)
Rectangle()
.fill(Color.white)
.frame(width: 25, height: 25)
.rotationEffect(Angle(degrees: 45))
.padding(.bottom, 15)
}
}
}
To create overlapping Views you can use a ZStack.
SwiftUI has a dedicated stack type for creating overlapping content,
which is useful if you want to place some text over a picture for
example. It’s called ZStack, and it works identically to the other two
stack types [HStack, VStack].
In the below example, the DatePicker will be placed behind the Rectangle:
ZStack {
DatePicker(...)
Rectangle()
}
You can find more information in this tutorial: How to layer views on top of each other using ZStack?