Adding shapes in List row of SwiftUI - ios

I am trying to create a List View where rows looks like this:
However, I am unable to align the Circle on the leading side. Tried using Spacer(), HStack within VStack, it just doesn't work. Here's my code and its output.
struct PeopleView: View {
let people = ["Adam", "James"]
var body: some View {
NavigationView {
List {
ForEach(people, id: \.self) { person in
HStack {
Circle()
VStack {
Text("\(person)")
}
}
}
}
.navigationBarTitle("People", displayMode: .inline)
}
}
}

Actually you don't need shape itself in this case, but only as a mask to visually present text in circle.
So the solution can be like following
HStack {
Text(person.prefix(2).uppercased()).bold()
.foregroundColor(.white)
.padding()
.background(Color.red)
.mask(Circle()) // << shaping text !!
Spacer()
VStack {
Text("\(person)")
}
}

Some views in SwiftUI fill all available space. Such views are shapes, colors, spacers, dividers, and GeometryReader.
Your Circle is a shape and it behaves similarly like a Spacer (in terms of filling space).
If you replace Circle with an image of a circle it will work:
ForEach(people, id: \.self) { person in
HStack {
Image(systemName: "circle.fill")
.imageScale(.large)
Spacer()
VStack {
Text("\(person)")
}
}
}

That is happening because you did not give a fixed (or relative) frame to the Circle Shape, so the Circle is taking up the maximum available width.
If you add a frame(width:height:), everything should work correctly:
struct PeopleView: View {
let people = ["Adam", "James"]
var body: some View {
NavigationView {
List {
ForEach(people, id: \.self) { person in
HStack {
Circle()
.frame(width: 50, height: 50)
VStack {
Text("\(person)")
}
}
}
}
.navigationBarTitle("People", displayMode: .inline)
}
}
}

Related

Image positionning issue in SwiftUI

I am having an alignment problem while using SwiftUI.
Maybe I should say a layout issue. Anyway here is the situation:
This is the relevant part of the app interface:
One can see that while the text ("+++++") is centered, the flag is not. It is slightly shifted to the left. This left-shifting is precisely my problem. I would like the image to be centered as the text is.
Here follows the code, I would like to know what I am doing wrong for the image not to be centered:
import SwiftUI
struct TheNiceView: View {
........
var body: some View {
VStack {
HStack {
Spacer()
TheButtonView()
Spacer()
}
HStack {
Spacer()
Button(action: {})
{
Text("+++++")
.font(.largeTitle)
.foregroundColor(.gray)
.fontWeight(.heavy)
}
Spacer()
}
}
}
}
struct TheButtonView: View {
........
let imgSide:CGFloat = 72.0
var body: some View {
HStack {
Button(action: {})
{
Image(uiImage: ThaiFlagImg)
.resizable()
.frame(width: imgSide, height: imgSide)
}
}
}
}
Just in case this may be useful, this is the image used for the flag:
1
Thailand flag has five horizontal stripes in the colours red, white, blue, white and red. The image you use has 7 srtips.
2
Using the Spacers and HStack are unnecessary.
I used the following image without the Spacers and HStack, both the +++ button and the flag are aligned in the center.
https://upload.wikimedia.org/wikipedia/commons/a/a9/Flag_of_Thailand.svg
struct TheNiceView: View {
var body: some View {
VStack {
TheButtonView()
Button(action: {}) {
Text("+++++")
.font(.largeTitle)
.foregroundColor(.gray)
.fontWeight(.heavy)
}
}
}
}
struct TheButtonView: View {
let imgSide:CGFloat = 72.0
var body: some View {
Button(action: {}){
Image( "ThaiFlagImg")
.resizable()
.frame(width: imgSide, height: imgSide)
}
}
}

How to create List row seperate one another in SwiftUI

I'm new in SwiftUI
I'm trying to create my section like this, where each row is separated with another. Kinda like section where the background is not connected one another. take a look at the pict: (picture from dribbble)
but mine ended up like this:
(I created the bg blue so that y'all can see the rows clearly)
here's my code:
import SwiftUI
struct ProductPageView: View {
init() {
UITableView.appearance().backgroundColor = .clear // Uses UIColor
}
var body: some View {
NavigationView {
ZStack {
Color.blue.edgesIgnoringSafeArea(.all)
VStack {
List {
ForEach(arrayProduct, id: \.name) { dataProduct in
ProductListCell(item: dataProduct)
}
.listRowInsets(EdgeInsets(top: 10, leading: 10, bottom: 10, trailing: 10))
}
.listStyle(InsetGroupedListStyle())
}
}
.navigationTitle("Produk")
}
}
}
I've used listRowInsets but it's just stretch it.
How do I create that separation between rows?
Any help will be appreciated.
Thank you
I did not attempt a pixel perfect reproduction since I don't have the assets, but the following outlines one way you can accomplish this.
Comments are in the code to explain some of the key pieces:
import SwiftUI
struct ContentView: View {
var body: some View {
NavigationView {
ZStack {
Color.blue.edgesIgnoringSafeArea(.all)
VStack {
// This handles the display of the
// section header
HStack {
// The text & spacer are grouped
// so that you can pad accordingly
Text("Stuff")
Spacer()
}
.padding(.bottom, 2)
.padding(.leading, 10)
// A VStack contains your list of items
VStack {
ForEach(0...3, id: \.self) { element in
// Each grouping (a product for you)
// will exist within this top level
// HStack
HStack {
// A new HStack (or another view of
// your choice) will contain the views
// that compose your product entry
HStack {
Text("\(element)")
Spacer()
}
.padding() // Provides some buffer around the product
.background(Color.white)
.contentShape(Rectangle()) // For tapping
.cornerRadius(5.0)// Rounding!
}
// Custom padding can tailor your spacing needs
.padding([.top, .bottom], 2)
.padding([.trailing, .leading], 10)
}
}
Spacer()
}
}
.navigationTitle("Produk")
}
}
}

Custom ScrollView Indicator in SwiftUI

Is it possible to create a custom horizontal indicator that has empty and filled circles to show how many images there are and the current position?
The below attempt uses a lazyHStack and OnAppear but, judging from the console output, it doesn't work properly since scrolling back and forth doesn't recall the onAppear consistently.
import SwiftUI
struct ContentView: View {
let horizontalScrollItems = ["wind", "hare.fill", "tortoise.fill", "rosette" ]
var body: some View {
GeometryReader { geometry in
ScrollView(.horizontal, showsIndicators: false) {
LazyHStack {
ForEach(horizontalScrollItems, id: \.self) { symbol in
Image(systemName: symbol)
.font(.system(size: 200))
.frame(width: geometry.size.width)
.onAppear(){print("\(symbol)")}
}
}
}
}
}
}
This is the desired indicator. I'm just not sure how to properly fill and empty each circle as the user scrolls back and forth. Appreciate the help!
You can get the desired result using TabView() and PageTabViewStyle()
Note : This will work from SwiftUI 2.0
Here is the code :
struct ContentView: View {
let horizontalScrollItems = ["wind", "hare.fill", "tortoise.fill", "rosette" ]
var body: some View {
GeometryReader { geometry in
TabView(){
ForEach(horizontalScrollItems, id: \.self) { symbol in
Image(systemName: symbol)
.font(.system(size: 200))
.frame(width: geometry.size.width)
}
}
.tabViewStyle(PageTabViewStyle())
.indexViewStyle(PageIndexViewStyle(backgroundDisplayMode: .always))
}
}
}
Result :

SwiftUI HStack fill whole width with equal spacing

I have an HStack:
struct BottomList: View {
var body: some View {
HStack() {
ForEach(navData) { item in
NavItem(image: item.icon, title: item.title)
}
}
}
}
How do I perfectly center its content with equal spacing automatically filling the whole width?
FYI just like Bootstraps CSS class .justify-content-around
The frame layout modifier, with .infinity for the maxWidth parameter can be used to achieve this, without the need for an additional Shape View.
struct ContentView: View {
var data = ["View", "V", "View Long"]
var body: some View {
VStack {
// This will be as small as possible to fit the data
HStack {
ForEach(data, id: \.self) { item in
Text(item)
.border(Color.red)
}
}
// The frame modifier allows the view to expand horizontally
HStack {
ForEach(data, id: \.self) { item in
Text(item)
.frame(maxWidth: .infinity)
.border(Color.red)
}
}
}
}
}
The various *Stack types will try to shrink to the smallest size possible to contain their child views. If the child view has an ideal size, then the *Stack will not expand to fill the screen. This can be overcome by placing each child on top of a clear Rectangle in a ZStack, because a Shape will expand as much as possible. A convenient way to do this is via an extension on View:
extension View {
func inExpandingRectangle() -> some View {
ZStack {
Rectangle()
.fill(Color.clear)
self
}
}
}
You can then call it like this:
struct ContentView: View {
var data = ["View", "View", "View"]
var body: some View {
VStack {
// This will be as small as possible to fit the items
HStack {
ForEach(data, id: \.self) { item in
Text(item)
.border(Color.red)
}
}
// Each item's invisible Rectangle forces it to expand
// The .fixedSize modifier prevents expansion in the vertical direction
HStack {
ForEach(data, id: \.self) { item in
Text(item)
.inExpandingRectangle()
.fixedSize(horizontal: false, vertical: true)
.border(Color.red)
}
}
}
}
}
You can adjust the spacing on the HStack as desired.
I inserted Spacer() after each item...but for the LAST item, do NOT add a Spacer():
struct BottomList: View {
var body: some View {
HStack() {
ForEach(data) { item in
Item(title: item.title)
if item != data.last { // match everything but the last
Spacer()
}
}
}
}
}
Example list that is evenly spaced out even when item widths are different:
(Note: The accepted answers .frame(maxWidth: .infinity) did not work for all cases: it did not work for me when it came to items that have different widths)
If items are fullwidth compatible, it will be done automatically, you can wrap items between spacers to make it happen:
struct Resizable: View {
let text: String
var body: some View {
HStack {
Spacer()
Text(text)
Spacer()
}
}
}
So you. can use it in a loop like:
HStack {
ForEach(data, id: \.self) { item in
Resizable(text: item)
}
}
You can also use spacing in stacks ... ie
HStack(spacing: 30){
Image("NetflixLogo")
.resizable()
.scaledToFit()
.frame(width: 40)
Text("TV Show")
Text("Movies")
Text("My List")
}
.frame(maxWidth: .infinity)
output result looks like this ...
If your array has repeating values, use array.indices to omit a spacer after the last element.
HStack() {
ForEach(data.indices) { i in
Text("\(data[i])")
if i != data.last {
Spacer()
}
}
}

SwiftUI View displayed with blue background

I'm trying to reproduce the Apple tutorial(Composing Complex Interfaces) and I have a very weird problem. My CategoryItem view is being displayed as a blue frame.
If I remove the NavigationLink which wraps it, everything works fine but with that one it doesn't.
struct CategoryRow: View {
var categoryName: String
var items: [Landmark]
var body: some View {
VStack(alignment: .leading) {
Text(self.categoryName)
.font(.headline)
.padding(.leading, 15)
.padding(.top, 5)
ScrollView(.horizontal, showsIndicators: false) {
HStack(alignment: .top, spacing: 0) {
ForEach(self.items) { landmark in
NavigationLink(
destination: LandmarkDetail(
landmark: landmark
)
) {
CategoryItem(landmark: landmark)
}
}
}
}.frame(height: 185)
}
}
}
NavigationLink has a blue accent color by default, just call .accentColor(Color.clear) on it
Or you could try this:
NavigationView {
NavigationLink(destination: Text("Detail view here")) {
Image("YourImage")
}
.buttonStyle(PlainButtonStyle())
}
https://www.hackingwithswift.com/quick-start/swiftui/how-to-disable-the-overlay-color-for-images-inside-button-and-navigationlink
renderingMode(.original) is what did it for me; .accentColor(Color.clear) made the image invisible (my best explanation here is because it didn't have a transparency).
NavigationView {
NavigationLink(destination: Text("Detail view here")) {
Image("YourImage")
.renderingMode(.original)
}
}
As the answer above mentioned, How to disable the overlay color for images inside Button and NavigationLink is a good write up as well.

Resources