Hi. I am having issues with json parsing. all my source data use double quote except for one.
here is the sample
do {
let json = "[['16772', 'Cebu', 'Philippines']]"
if let jsonArray = try JSONSerialization.jsonObject(with: Data(json.utf8), options: []) as? [[Any]] {
print("Hello World")
}
} catch {
print(error)
}
if the json string is
let json = "[[\"16772\", \"Cebu\", \"Philippines\"]]"
it works ok. but if it is single quote, then it gives out the error message
Error Domain=NSCocoaErrorDomain Code=3840 "Invalid value around line 1, column 2." UserInfo={NSDebugDescription=Invalid value around line 1, column 2., NSJSONSerializationErrorIndex=2}
What am i missing to enable parsing single quote normally? Thoughts?
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struct TweetFeedSelectionGridView: View {
private let ICON_SIZE: CGFloat = 40
private let ROW_BOTTOM_PADDING: CGFloat = 40
var body: some View {
Grid(alignment: .top, verticalSpacing: ROW_BOTTOM_PADDING) {
createTwitterFeedRow(["TwitterDilg", "TwitterDoh", "TwitterDole"])
createTwitterFeedRow(["TwitterDswd", "TwitterDepEd", "TwitterMmda"])
createTwitterFeedRow(["TwitterNdrmmc", "TwitterPagasa", "TwitterPcoo"])
createTwitterFeedRow(["TwitterPhivolcs", "TwitterPia", "TwitterPna"])
createTwitterFeedRow(["TwitterPnp", "TwitterRedCross", "TwitterTxtFire"])
}
.frame(maxWidth: .infinity)
.background(.red)
}
@ViewBuilder
func createTwitterFeedRow(_ feeds: [String]) -> some View {
GridRow {
createTwittedFeedCell(feeds[0])
createTwittedFeedCell(feeds[1])
createTwittedFeedCell(feeds[2])
}
.frame(maxWidth: .infinity)
}
@ViewBuilder
func createTwittedFeedCell(_ iconLabel: String) -> some View {
VStack {
Image(uiImage: UIImage(named: iconLabel)!)
.frame(width: ICON_SIZE, height: ICON_SIZE)
Text(iconLabel.replacingOccurrences(of: "Twitter", with: ""))
.padding(.top, 10)
}
}
}
struct TwitterFeedSelectionGridView_Previews: PreviewProvider {
static var previews: some View {
TweetFeedSelectionGridView()
}
}
Why does the image in the first row overlap? I have no clue why. The image is an ImageSet of 80, 160 and 240x240 images.
Hi all. Any clue why
BGTaskScheduler.shared.register() does not get called? The print does not show anything to console.
I already registered them in Permitted Background task scheduler identifiers and added 2 items for
package.Task.updateAppRefresh
package.Task.updateAppProcessing
I re-read the tutorial and I cannot figure out what else i am lacking? Thoughts?
Hi, what do you think is wrong with the fucntion. This is what I have. Could it be because of the roundmode type used?
static func roundOff(_ val: String, _ decimalPlace: Int) -> String {
let decimalFormatter = createDecimalFormatter()
decimalFormatter.minimumFractionDigits = decimalPlace
decimalFormatter.maximumFractionDigits = decimalPlace
let bigDecimal = NSDecimalNumber(string: val)
return decimalFormatter.string(from: bigDecimal.rounding(accordingToBehavior: NSDecimalNumberHandler(roundingMode: .up, scale: Int16(decimalPlace), raiseOnExactness: false, raiseOnOverflow: false, raiseOnUnderflow: false, raiseOnDivideByZero: false)))!
}
static func roundOff(_ value: Double, _ decimalPlace: Int) -> String {
return roundOff(String(value), decimalPlace)
}
roundOf("75.2", 0) returns 76 instead of 75
Hi. I am new to SwiftUI and i am not sure what the right term for this is. Hoping someone can guide me
Take this generic view for example (this one is incorrect since if i pass a view as parameter, how can it use the fetched data).
struct FetchUrlContentView<Content: View>: View {
var url: String?
@State var loading = true
@State var error = false
@State var view: Content
var body: some View {
HStack {
if !NetworkTool.hasInternet() {
NoInternetView()
}
else if loading {
LoadingProgressView()
}
else if error {
SomethingWrongView()
}
else {
view
}
}
.task {
if let urlLink = self.url {
fetchContentFromUrl(url: urlLink, { data in
// Supposed to use data to the view here but it won't be generic.
// any ideas?
self.loading = false
})
}
else {
self.loading = false
self.error = true
}
}
}
What i am looking for is something of a way to keep on reusing FetchUrlContentView such that after data is fetched, i could call it like this
FetchUrlContentView(url: "https://www.test.com/", loading: true) { data in
MyView(data)
}
where MyView contains something like Text(data.description)
So String interpolation is possible in Swift. However, the samples i have seen are either expressions or variables placed inside the "".
Is it possible to replace with values if you have {0} and {1} in the string? I do not know what this is called in Swift if this is possible.
I thought it is still interpolation but all I see are posts that do not have {0} ...
Or is this feature not available in Swift?
All I have come across are NSURLSession. Is this possible for URLSession? How?
I noticed my requests show up instantly so I figured these reponses are cached instead of fetching new ones.
Caching should not be the default. Weird why it was set this way.
Thoughts?
This is my code. It is basic
let url = URL(string: urlLink)!
let (data, _) = try await URLSession.shared.data(from: url)
print(String(decoding: data, as: UTF8.self))
Hi all, this is my last recourse by posting here since I really could not find a solution to my problem. My issue is that if there is a scrollable lazyVStack in the main content area, or if i cick on the overflow menu button, nothing happens.
the button to show the side menu view works ok though. as is clicking on the rows of the LazyVStack.
The cause of the ZStack top most but I am not sure what the problem is because the issue only occurs if it is in dark mode.
And, the issue only happens if i am in dark mode. Just weird.
This is the code
var body: some View {
NavigationView {
ZStack(alignment: .leading) {
VStack(spacing: 0) {
HStack {
Button(action: {
withAnimation(.default) {
show.toggle()
}
}) {
Image(systemName: "line.3.horizontal")
}
Spacer()
Text("Home")
Spacer()
OverflowMenu()
}
.padding()
.foregroundColor(.primary)
.overlay(Rectangle().stroke(Color.primary.opacity(0.1), lineWidth: 1).shadow(radius: 3).edgesIgnoringSafeArea(.top))
MainContent(navigationManager: navigationManager)
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
HStack {
SideMenuView(dark: $dark, show: $show, navigationManager: navigationManager)
.preferredColorScheme(dark ? .dark : .light)
.offset(x: self.show ? 0 : -UIScreen.main.bounds.width / 1.2)
Spacer(minLength: 0)
Rectangle().stroke(.clear).frame(width: show ? UIScreen.main.bounds.width - (UIScreen.main.bounds.width / 1.2) : 0)
.contentShape(Rectangle())
.onTapGesture {
if (show) {
withAnimation(.default) {
show.toggle()
}
}
}
}
.background(Color.primary.opacity(self.show ? (self.dark ? 0.05 : 0.2) : 0).edgesIgnoringSafeArea(.all))
}
.navigationBarHidden(true)
}
.navigationViewStyle(.stack)
}
OverflowMenuView
struct OverflowMenu: View {
@State var isClickedSettings = false
@State var isClickedAbout = false
@State var isClickedFaq = false
@State var isClickedRemoveAds = false
var body: some View {
VStack {
NavigationLink(destination: SettingView(), isActive: $isClickedSettings) {
EmptyView()
}
.hidden()
NavigationLink(destination: SettingView(), isActive: $isClickedAbout) {
EmptyView()
}
.hidden()
NavigationLink(destination: SettingView(), isActive: $isClickedFaq) {
EmptyView()
}
.hidden()
NavigationLink(destination: SettingView(), isActive: $isClickedRemoveAds) {
EmptyView()
}
.hidden()
Menu {
Button {
isClickedSettings = true
}
label: {
Label {
Text(StringTool.localize("settings"))
}
icon: {
Awesome.Solid.cog.image
.foregroundColor(UIColor(named: "MenuSetting")!)
}
}
Button {
isClickedAbout = true
}
label: {
Label {
Text(StringTool.localize("about"))
}
icon: {
Awesome.Solid.infoCircle.image
.foregroundColor(UIColor(named: "MenuAbout")!)
}
}
Button {
isClickedFaq = true
}
label: {
Label{
Text(StringTool.localize("faq"))
}
icon: {
Awesome.Solid.bookOpen.image
.foregroundColor(UIColor(named: "MenuFaq")!)
}
}
Button {
isClickedRemoveAds = true
}
label: {
Label{
Text(StringTool.localize("remove_ads"))
}
icon: {
Awesome.Solid.unlockAlt.image
.foregroundColor(UIColor(named: "MenuRemoveAds")!)
}
}
} label: {
Image(systemName: "ellipsis.circle")
}
}
}
}
Any Idea?
Hi, does anyone have some short code to display a marker with callout? There simply is no updated documentation of it. They are either using old names or I just have not found any tutorial of it.
I only found about MapMarker, but then it only shows a pin. on the map and no callout is possible.
This is what I have
Map(coordinateRegion: $mapRegion, showsUserLocation: true, annotationItems: markers) { marker in
marker.location
}
Where marker.location is MarkerMap. So it displays a pin correctly, but how to add a callout and link to it?
There are so many different names that start with MK. I am not sure if those are the latest. I figure MapAnnotation, MapMarker to name a few are the latest ones.
The various posts showing NSAttributedString rendering html tags has become mute because the bold tag does not work anymore.
Anyone know why? Or what the workaround is?
I am using this as the extension in string (found this in stackoverflow)
var htmlAttributedString: NSAttributedString? {
do {
return try NSAttributedString(data: Data(utf8), options: [NSAttributedString.DocumentReadingOptionKey.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil)
} catch {
return nil
}
}
var htmlString: String {
return htmlAttributedString?.string ?? ""
}
Bold just doesnt work. I do not see anything wrong with the code itself. It looks right. But it just does not render bold.
I read about adding style tag in the string with the default apple system font in it hardcoded, tried that but didnt work out still.
Regardless if I use a protocol or not that contains this method, e.g. I have this
var test: String?
func setupData() -> Void {
test = "New value"
}
Why does it say
Cannot assign to property: 'self' is immutable"
So if i add mutable to setupData() which becomes "mutating func setupData() { ... }", then i get another error message
Cannot use mutating member on immutable value: 'self' is immutable
I call setupData in onAppear() instead of init() for now. Putting it in init forces me to initialize the variables (sucks)
I am lost on this one. Advise?
This is used inside a Struct View. not a class.
I have the coordinate for northeast, southwest and center coordinates for a country Philippines
but it does not zoom in there. This is the code I am using in OnAppear in the map view
@State private var region = MKCoordinateRegion()
var body: some View {
Map(coordinateRegion: $region)
.edgesIgnoringSafeArea(.all)
.onAppear() {
region = MapTool.getPARCoordinateRegion()
}
}
static func getPARCoordinateRegion() -> MKCoordinateRegion {
let ph = getPHCountryPlaceMark()
let southWestPoint = MKMapPoint(x: ph.southWestLongitude, y: ph.southWestLatitude)
let northEastPoint = MKMapPoint(x: ph.northEastLongitude, y: ph.northEastLatitude)
let northWestPoint = MKMapPoint(x: southWestPoint.x, y: northEastPoint.y)
let mapRectWidth = northEastPoint.x - northWestPoint.x
let mapRectHeight = northWestPoint.y - southWestPoint.y
return MKCoordinateRegion(MKMapRect(x: southWestPoint.x, y: southWestPoint.y, width: mapRectWidth, height: mapRectHeight))
}
static func getPHCountryPlaceMark() -> CountryPlaceMark {
let countryPlaceMark = CountryPlaceMark()
countryPlaceMark.longName = "Philippines"
countryPlaceMark.shortName = "PH"
countryPlaceMark.centerLatitude = 12.879721
countryPlaceMark.centerLongitude = 121.774017
countryPlaceMark.southWestLatitude = 4.613444
countryPlaceMark.southWestLongitude = 116.931557
countryPlaceMark.northEastLatitude = 19.574024
countryPlaceMark.northEastLongitude = 126.604384
return countryPlaceMark
}
But instead zooms here. Thoughts?
Hi. Beginner here. Currently this is how my app looks like. What I wish to do is for every view that gets changed highlighted by the green square border, the menu item in the top horizontal HStack (my so called toolbar) also changes (highlighted in yellow circle).
Currently, I use an ObservedObservable to change the view (green square) via the sidebarmenu.
What is the best approach to the toolbar part? I was thinking that maybe within the child view e.g. SampleMap1, it has a custom menu item view variable which will be shown in the parent view (Where the yellow circle is lcoated) to add the menu item view. But I am not sure how to go about it.
Advise, suggestions appreciated. Thoughts?
These are what i have so far ...
struct MainContent: View {
@ObservedObject var navigationManager : SidebarNavigationManager
var body: some View {
VStack(spacing: 0) {
switch navigationManager.menuCategory {
case .SAMPLE1:
SampleMap1()
case .SAMPLE2:
SampleMap2()
}
}
.navigationBarTitleDisplayMode(.inline)
}
}
And content view looks like this ...
struct ContentView: View {
@StateObject var navigationManager = SidebarNavigationManager()
@State var show = false
var body: some View {
NavigationView {
ZStack(alignment: .leading) {
VStack(spacing: 0) {
HStack {
Button(action: {
withAnimation(.default) {
show.toggle()
}
}) {
Image(systemName: "line.3.horizontal")
}
Spacer()
Text("Home")
Spacer()
// This is where I wish to put like 2 or 3 menu items, default hidden and will show when the child view provides a menu item view with it that will get shown here
OverflowMenu() <-- ordinary view
}
.padding()
.foregroundColor(.primary)
.overlay(Rectangle().stroke(Color.primary.opacity(0.1), lineWidth: 1).shadow(radius: 3).edgesIgnoringSafeArea(.top))
MainContent(navigationManager: navigationManager)
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
HStack {
SideMenuView(show: $show, navigationManager: navigationManager)
.offset(x: self.show ? 0 : -UIScreen.main.bounds.width / 1.2)
Spacer(minLength: 0)
Rectangle().stroke(.clear).frame(width: show ? UIScreen.main.bounds.width - (UIScreen.main.bounds.width / 1.2) : 0)
.contentShape(Rectangle())
.onTapGesture {
if (show) {
withAnimation(.default) {
show.toggle()
}
}
}
}
}
.navigationBarHidden(true)
}
.navigationViewStyle(.stack)
}
}
struct SampleText : View {
let text: String
var body: some View {
Text(text)
}
}
Is this possible?
I have a class/struct that will store a function that will be used as an action to the button.
e.g.
struct Test {
var action: (() -> Void)?
}
This works
tempfunc() -> Void {
print("clicked it")
}
let test = Test()
test.action = tempfunc
Button("click me", action: test.action)
What I want to do is something like this.
test.action = () -> Void {
print("clicked")
}
Is this possible? If i try that code, error shows up saying "Cannot assign value of type '()' to type '() -> Void'"
Hi. This is my MapView code
import SwiftUI
import MapKit
struct MapView: UIViewRepresentable {
var region: MKCoordinateRegion
var polylineCoordinates: [CLLocationCoordinate2D]?
func makeUIView(context: Context) -> MKMapView {
let mapView = MKMapView()
mapView.delegate = context.coordinator
mapView.region = region
if let polylines = polylineCoordinates {
let polyline = MKPolyline(coordinates: polylines, count: polylines.count)
mapView.addOverlay(polyline)
}
return mapView
}
func updateUIView(_ view: MKMapView, context: Context) {
}
func makeCoordinator() -> Coordinator {
Coordinator(self)
}
}
class Coordinator: NSObject, MKMapViewDelegate {
var parent: MapView
init(_ parent: MapView) {
self.parent = parent
}
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
if overlay is MKPolyline {
let routePolyline = overlay as! MKPolyline
let renderer = MKPolylineRenderer(polyline: routePolyline)
renderer.strokeColor = UIColor.white
renderer.lineWidth = 2
return renderer
}
return MKOverlayRenderer()
}
}
If i do this
var body: some View {
MapView(region: [array of CLLocationCoordinage2D])
.edgesIgnoringSafeArea(.all)
}
it works since the value of the region property is set in the constructor. However, what i want is to set the region property in the onAppear closure. What is lacking here since it does not work.
I wish to do something like this
var body: some View {
MapView(region: region)
.edgesIgnoringSafeArea(.all)
.onAppear {
region = [array of CLLocationCoordinage2D]
}
}
I want to apply the same thing to polylineCoordinates property but for now, if I can make it work with region, I am sure the same thing can be applied to polylineCoordinates property.
Thoughts?