I have a view that shows a table and 4 buttons. Each button allows the user to step forward and backwards through the data. Buttons are enabled and disabled based on where you are in the data. If you are less than 200 values to the end of the data for example, the "Page Down - 200" button is disabled. Everything works fine if the mouse is used to run the code associated with each button. But in this case I think the buttons never get focus. Focus I think remains with the sidebar content item that brought up the table view (am using a navigation split view). If I tab over to the page down 200 button and use the space bar to run its associated code I get the error "AttributeGraph: cycle detected through attribute 864480". I think the problem lies with attempting to disable the button while it has focus but am not 100% sure. I have tried to change the focus prior to disabling the button but I get the same error. I think there is some fundamental that I am missing. Below is my table view along with the page down 200 button view.
struct DataTable: View {
@FocusState var buttonWithFocus: Field?
@ObservedObject var vm: ButtonsViewModel = ButtonsViewModel.shared
@State private var hasAppeared = false
var closingValues: [TradingDayClose]
var heading: String = ""
init(fundName: String, closingValues: [TradingDayClose]) {
self.heading = fundName
self.closingValues = closingValues
}
var body: some View {
HStack {
Spacer()
.frame(width: 150)
GroupBox(heading) {
if hasAppeared {
Table (of: TradingDayClose.self) {
TableColumn("") { closingValue in
Text(dateToStringFormatter.string(from: closingValue.timeStamp!))
.id(closingValue.timeStamp!)
.textFormatting(fontSize: 14)
.frame(width: 100, alignment: .center)
} // end table column
TableColumn("") { closingValue in
Text(String(format: "$ %.2f", closingValue.close))
.textFormatting(fontSize: 14)
.frame(width: 100, alignment: .center)
} // end table column
} rows: {
ForEach((closingValues.indices), id: \.self) { index in
if vm.showData[index] == true {
TableRow(closingValues[index])
}
}
}
.focusable(false)
.frame(width: 250)
.overlay {
let tempValue1: String = "Date"
let tempValue2: String = "Closing Value"
Text(tempValue1).position(x: 63, y: 15)
.textFormatting(fontSize: 16)
Text(tempValue2).position(x: 180, y: 15)
.textFormatting(fontSize: 16)
}
} // end has appeared
} // end group box
.groupBoxStyle(Table2GroupBoxStyle())
Spacer()
.frame(width: 50)
VStack {
Spacer()
.frame(height: 100)
Form {
Section {
ButtonUp25(closingValuesCount: closingValues.count)
.focused($buttonWithFocus, equals: .btnUp25)
ButtonUp200(closingValuesCount: closingValues.count)
.focused($buttonWithFocus, equals: .btnUp200)
} header: {
Text("Page Up")
}
Spacer()
.frame(height: 20)
Section {
ButtonDown25(closingValuesCount: closingValues.count)
.focused($buttonWithFocus, equals: .btnDn25)
ButtonDown200(buttonWithFocus: $buttonWithFocus, closingValuesCount: closingValues.count)
.focused($buttonWithFocus, equals: .btnDn200)
} header: {
Text("Page Down")
}
} // end form
.navigationTitle("Data Table")
Spacer()
.frame(height: 100)
} // end v stack
Spacer()
.frame(width: 50)
} // end h stack
.onAppear {
vm.InitializeShowData(closingValueCount: closingValues.count)
vm.InitializeIndexes()
vm.InitializeButtons()
for i in vm.startIndex...vm.endIndex {
DispatchQueue.main.asyncAfter(deadline: .now() + vm.renderRate * Double(i)) {
vm.showData[i] = true
} // end dispatch queue main async
}
hasAppeared = true
}
} // end body
} // end struct
struct ButtonDown200: View {
var buttonWithFocus: FocusState<Field?>.Binding
@ObservedObject var vm: ButtonsViewModel = ButtonsViewModel.shared
var closingValuesCount: Int
var body: some View {
Button("Page Down - 200") {
for i in vm.startIndex...vm.endIndex {
vm.showData[i] = false
}
vm.startIndex = vm.startIndex + 200
vm.endIndex = vm.startIndex + 24
var j: Int = 0
for i in vm.startIndex...vm.endIndex {
DispatchQueue.main.asyncAfter(deadline: .now() + vm.renderRate * Double(j)) {
vm.showData[i] = true
}
j = j + 1
}
if (closingValuesCount - 1) - (vm.startIndex + 200) < 25 {
// buttonWithFocus.wrappedValue = .btnDn25
vm.pageDownDisabled200 = true
}
if vm.startIndex > 24 {
vm.pageUpDisabled25 = false
}
if vm.startIndex - 200 >= 0 {
vm.pageUpDisabled200 = false
}
}
.controlSize(.large)
.buttonStyle(.borderedProminent)
.disabled(vm.pageDownDisabled200)
}
}
I have a view that displays core data values (passed in as closingValues) in a data table. To make the view generic, so I can pass in arrays of different lengths (all are from the same entity and thus attributes) and account for the view having already been called with a different set of values, I need to initialize the showData array contained in the associated view model. I attempt to do so in the init of the view but I get an error message "publishing changes from within a view updates is not allowed. This will cause undefined behavior". It should be noted that in the view model showData is Published and initialized = []. I attempted to do the initialization in the views onappear but the tables rows: ForEach runs before onappear and I get an index out of range on the first call to the view. I tried adding @MainActor to the view models class, which also failed to solve the problem. I am clearly not understanding a concept. Below is the code for the view.
struct DataTable: View {
@ObservedObject var vm: ButtonsViewModel = ButtonsViewModel.shared
var closingValues: [TradingDayClose]
var heading: String = ""
init(fundName: String, closingValues: [TradingDayClose]) {
self.heading = fundName
self.closingValues = closingValues
vm.showData = []
vm.showData = Array(repeating: false, count: closingValues.count)
// Publishing changes from within view updates is not allowed, this will cause undefined behavior.
}
var body: some View {
HStack {
Spacer()
.frame(width: 150)
GroupBox(heading) {
Table (of: TradingDayClose.self) {
TableColumn("") { closingValue in
Text(dateToStringFormatter.string(from: closingValue.timeStamp!))
.id(closingValue.timeStamp!)
.textFormatting(fontSize: 14)
.frame(width: 100, alignment: .center)
} // end table column
TableColumn("") { closingValue in
Text(String(format: "$ %.2f", closingValue.close))
.textFormatting(fontSize: 14)
.frame(width: 100, alignment: .center)
} // end table column
} rows: {
ForEach((closingValues.indices), id: \.self) { index in
if vm.showData[index] == true {
TableRow(closingValues[index])
}
}
}
.onAppear {
vm.InitializeIndexes()
vm.InitializeButtons()
for i in vm.startIndex...vm.endIndex {
DispatchQueue.main.asyncAfter(deadline: .now() + vm.renderRate * Double(i)) {
vm.showData[i] = true
} // end dispatch queue main async
}
}
.frame(width: 250)
.overlay {
let tempValue1: String = "Date"
let tempValue2: String = "Closing Value"
Text(tempValue1).position(x: 63, y: 15)
.textFormatting(fontSize: 16)
Text(tempValue2).position(x: 180, y: 15)
.textFormatting(fontSize: 16)
}
} // end group box
.groupBoxStyle(Table2GroupBoxStyle())
Spacer()
.frame(width: 50)
VStack {
Spacer()
.frame(height: 100)
ButtonUp25(closingValuesCount: closingValues.count)
ButtonUp200(closingValuesCount: closingValues.count)
Spacer()
.frame(height: 20)
ButtonDown25(closingValuesCount: closingValues.count)
ButtonDown200(closingValuesCount: closingValues.count)
Spacer()
.frame(height: 100)
} // end v stack
Spacer()
.frame(width: 50)
} // end h stack
} // end body
} // end struct
I have a view that displays a chart based on an array. Each element in the array is all of the attributes associated with a core data entity. The data is properly displayed. I would like to animate the rendering of the charts data but cannot seem to figure out how to do it. If someone could point me in the right direction it would be appreciated. Below is the code.
struct ClosingValuesChart: View {
@State private var selectedDate: Date? = nil
@State private var selectedClose: Float? = nil
@State private var xAxisLabels: [Date] = []
var closingValues: [TradingDayClose] = []
var heading: String = ""
init(fundName: String, numYears: Int, closingValues: [TradingDayClose]) {
self.heading = fundName + String(" - \(numYears) Year")
self.closingValues = closingValues
}
var body: some View {
GroupBox (heading) {
let xMin = closingValues.first?.timeStamp
let xMax = closingValues.last?.timeStamp
let yMin = closingValues.map { $0.close }.min()!
let yMax = closingValues.map { $0.close }.max()!
let xAxisLabels: [Date] = GetXAxisLabels(xMin: xMin!, xMax: xMax!)
var yAxisLabels: [Float] {
stride(from: yMin, to: yMax + ((yMax - yMin)/7), by: (yMax - yMin) / 7).map { $0 }
}
Chart {
ForEach(closingValues) { value in
LineMark(
x: .value("Time", value.timeStamp!),
y: .value("Closing Value", value.close)
)
.foregroundStyle(Color.blue)
.lineStyle(StrokeStyle(lineWidth: 1.25))
}
}
.chartXScale(domain: xMin!...xMax!)
.chartXAxisLabel(position: .bottom, alignment: .center, spacing: 25) {
Text("Date")
.textFormatting(fontSize: 14)
}
.chartXAxis {
AxisMarks(position: .bottom, values: xAxisLabels) { value in
AxisGridLine(centered: true, stroke: StrokeStyle(lineWidth: 1))
AxisValueLabel(anchor: .top) {
if value.as(Date.self) != nil {
Text("")
}
}
}
}
.chartYScale(domain: yMin...yMax)
.chartYAxisLabel(position: .leading, alignment: .center, spacing: 25) {
Text("Closing Value")
.font(Font.custom("Arial", size: 14))
.foregroundColor(.black)
}
.chartYAxis {
AxisMarks(position: .leading, values: yAxisLabels) { value in
AxisGridLine(centered: true, stroke: StrokeStyle(lineWidth: 1))
AxisValueLabel() {
if let labelValue = value.as(Double.self) {
Text(String(format: "$ %.2f", labelValue))
.textFormatting(fontSize: 12)
}
}
}
}
.chartOverlay { proxy in
GeometryReader { geometry in
ChartOverlayRectangle(selectedDate: $selectedDate, selectedClose: $selectedClose, proxy: proxy, geometry: geometry, xMin: xMin!, xMax: xMax!, closingValues: closingValues)
}
}
.overlay {
XAxisDates(dateLabels: xAxisLabels)
}
.overlay {
DateAndClosingValue(selectedDate: selectedDate ?? Date(), selectedClose: selectedClose ?? 0.0)
}
}
.groupBoxStyle(ChartGroupBoxStyle())
}
}
Post not yet marked as solved
I have a program that adds data from CSV files to core data. Once I have saved the managed object context to the persistent store I want to run a checkpoint to flush the contents of the WAL file into the SQLite file. I have added code to my class in an attempt to do so but am unable to determine on the line "sqlite3_wal_checkpoint( ...)" what to put in the unsafe pointer parameter (denoted with ??????? in the code).
class UpdateCoreData: ObservableObject {
@Published var isLoading: Bool = true
var moc: NSManagedObjectContext
init(moc: NSManagedObjectContext) {
self.moc = moc
Task {
await IsDataStoreEmpty(moc: self.moc)
let fund1 = CSVtoCoreData(fundName: "Fund1", fileName: "Fund1.csv")
let fund2 = CSVtoCoreData(fundName: "Fund2", fileName: "Fund2.csv")
let fund3 = CSVtoCoreData(fundName: "Fund3", fileName: "Fund3.csv")
await fund1.CSVtoCoreDataG(moc: self.moc)
await fund2.CSVtoCoreDataG(moc: self.moc)
await fund3.CSVtoCoreDataG(moc: self.moc)
do {
try moc.save()
} catch {
print("Error saving. \(error)")
}
--- start of added code
let fileURL = URL(fileURLWithPath: "/Users/Chris/Downloads/Persistent Store 2/Funds.sqlite")
var dataBase: OpaquePointer?
sqlite3_open(fileURL.path, &dataBase )
if sqlite3_open(fileURL.path, &dataBase) != SQLITE_OK {
print("Unable to open sqlite file")
} else {
print("Succesfully opened sqlite file")
}
sqlite3_wal_checkpoint(dataBase, ??????? )
sqlite3_close(dataBase)
--- end of added code
DispatchQueue.main.async {
self.isLoading = false
}
}
} // end init
}
The below code works. I pass in an array of core data entities and display attributes in a table. In the second table column I use a switch case statement to handle the 3 possible attributes I want to display. I could eliminate the switch case if I could figure out how to access a given core data attribute via a variable that contains the specific attribute name but have been unable to determine how to do so. Two attempts are commented out in the code.
struct DataTable: View {
private var closingValues: Array<TradingDayPrices>
var heading: String
var attribute: String
init(closingValues: [TradingDayPrices], heading: String, attribute: String) {
self.closingValues = closingValues
self.heading = heading
self.attribute = attribute
}
var body: some View {
Text(heading)
.foregroundColor(.black)
.font(Font.custom("Arial", size: 18))
.bold()
.padding(.top, 10)
Table(self.closingValues) {
TableColumn("Date") { value in
HStack {
Spacer()
Text(dateToStringFormatter.string(from: value.timeStamp!))
Spacer()
}
}
.width(100)
TableColumn("Closing Value") { value in
HStack {
Spacer()
// Text(String(format: "$ %.2f", value(forKey: attribute)))
// Text(String(format: "$ %.2f", value(attribute)))
switch attribute {
case "s1Close":
Text(String(format: "$ %.2f", value.s1Close))
case "s2Close":
Text(String(format: "$ %.2f", value.s2Close))
default:
Text(String(format: "$ %.2f", value.s3Close))
}
Spacer()
}
}
.width(100)
}
.foregroundColor(.black)
.font(Font.custom("Arial", size: 16))
.frame(width: 250)
Spacer()
.frame(height: 30)
}
}
I have an array of core data entities, named TradingDayPrices, with 1 date and 4 double attributes. I would like to be able to copy the date value and 1 specific double into a new array. I have not been able to determine the correct syntax. With the code below I get the error "cannot assign value of type [[Any]] to type [Date:Double]"
var allClosingValues: [TradingDayPrices]
var closingValues: [Date:Double]
var selection: DataDisplayed
init(selection: DataDisplayed, allClosingValues: [TradingDayPrices]) {
self.selection = selection
self.allClosingValues = allClosingValues
switch selection {
case .VOODT:
closingValues = allClosingValues.map {
[$0.timeStamp! , $0.vooClose]
}
default:
let _ = print("Error in Data Table Structure")
}
}
I have a core data program. I run my fetch request in a class i.e. a view model and assign it to a StateObject in the ContentView. When I attempt to use the fetch request results from the view model in a selected view, the DataTable, I get this message: Accessing StateObject's object without being installed on a View. This will create a new instance each time. Not sure what to do. Below is my code:
struct ContentView: View {
@Environment(\.managedObjectContext) var moc
@State var selection: DataDisplayed? = nil
@StateObject var dataViewModel: FetchCoreData = FetchCoreData()
var body: some View {
NavigationSplitView{
sidebarContent
.navigationSplitViewColumnWidth(min: 200, ideal: 200, max: 200)
} detail: {
detailContent
}
.navigationSplitViewStyle(.balanced)
.navigationTitle("Testing")
.frame(width: 1000, height: 800)
}
}
extension ContentView {
@ViewBuilder
var detailContent: some View {
if let selection = selection {
detailContent(for: selection)
.buttonStyle(.bordered)
} else {
Text("Make A Selection")
}
}
@ViewBuilder
func detailContent(for screen: DataDisplayed) -> some View {
switch screen {
case .VOODT: DataTable(dataModel: dataViewModel.fetchRequest)
case .NWDT: Text("Start")
case .VOOG1: Text("VOO Graph 1 Year")
default: Text("Not yet implemented")
}
}
}
class FetchCoreData: ObservableObject {
@FetchRequest var fetchRequest: FetchedResults<TradingDayPrices>
init() {
_fetchRequest = FetchRequest<TradingDayPrices>(sortDescriptors: [NSSortDescriptor(key: "timeStamp", ascending: true)], predicate: NSPredicate(format: "net > %d", 0.0))
}
}
struct DataTable: View {
var dataModel: FetchedResults<TradingDayPrices>
init(dataModel: FetchedResults<TradingDayPrices>) {
self.dataModel = dataModel
}
var body: some View {. // fails on this line ########################
List(dataModel.fetchRequest, id: \.self) { item in
Text("\(dateToStringFormatter.string(from: item.timeStamp!)) - ") +
Text("\(item.vooClose) ")
}
}
}
Post not yet marked as solved
I have a program that reads in CVS data and writes it to a core data persistent store. I would like to change the location of the persistent store. Per Apple docs it appears that I should be able to achieve this by overriding it in a sub class of NSPersistentContainer. Unfortunately I have been unable to figure how to do this. Below is my attempt.
The Xcode error I get is "cannot call value of non-function type URL".
final class CoreDataContainer: NSPersistentContainer {
let storePathURL: URL = URL(string: "file:///Users/Chris/Developer/Persistent Store")!
override class func defaultDirectoryURL() -> URL {
return super.defaultDirectoryURL()
.absoluteURL(storePathURL)
}
}
I would like to create a range of angles between 235 degrees and 35 degrees. This range would run 235 to 359 plus 0 to 35. I am using it in the line of code below but this of course does not work since the first integer is greater than the last integer in the range.
randomAngle = Int.random(235...35).
Is there a way to accomplish this?
I have a program that allows me to programmatically bounce a ball around a window. Everything works as desired. What I would like to be able to do is work with the window itself to do such things as remove the title, change the background color and make it non resizable. I think I do this by creating a class of type NSWindosController which I have done. I create an instance of it in the ContentView but it does not work. Is my class wrong or am I not creating an instance in the right place or is there some other problem. Thank you.
import Cocoa
class WindowController: NSWindowController {
override func windowDidLoad() {
super.windowDidLoad()
window?.styleMask.remove(.titled)
window?.styleMask.remove(.resizable)
window?.backgroundColor = .red
}
}
import SwiftUI
struct ColorShading: Identifiable {
let value: GraphicsContext.Shading
let id = UUID()
}
struct ContentView: View {
@State private var isPaused: Bool = true
@State private var ballPosition = BallPosition()
@State private var winController = WindowController()
var body: some View {
let ballColors = [
ColorShading(value: GraphicsContext.Shading.color(.orange)),
ColorShading(value: GraphicsContext.Shading.color(.red)),
ColorShading(value: GraphicsContext.Shading.color(.blue)),
ColorShading(value: GraphicsContext.Shading.color(.green)),
ColorShading(value: GraphicsContext.Shading.color(.gray)),
ColorShading(value: GraphicsContext.Shading.color(.yellow)),
ColorShading(value: GraphicsContext.Shading.color(.purple))
]
TimelineView(.animation(minimumInterval: 0.0001, paused: isPaused)) { timeline in
Canvas { context, size in
_ = timeline.date.timeIntervalSinceNow
let circleDiameter: Double = (size.width * 0.2)
let circleRadius: Double = circleDiameter / 2
if isPaused == true {
ballPosition.updateBaseData(maxX: size.width, maxY: size.height, circleRadius: circleRadius)
}
let wheelOrigin = CGPoint(x: ballPosition.xPosition, y: ballPosition.yPostion)
context.stroke(
Path { path in
path.addArc(center: wheelOrigin, radius: circleRadius, startAngle: .degrees(0), endAngle: .degrees(360), clockwise: false)
}, with: ballColors[ballPosition.randomColor].value, lineWidth: 2
) // end context stroke
ballPosition.updatePosition()
} // end canvas
.frame(width: 800, height: 800)
} // end time line view
.onAppear() {
Timer.scheduledTimer(withTimeInterval: 1.0, repeats: false) { timer in
isPaused = false
timer.invalidate()
} // end timer
} // end on appear
}
}
I am working with the new Charts Framework. The axis value labels for the x axis are dates (mm/dd/yy). I have 5 vertical grid lines and am trying to get the dates to be centered below the associated grid line with no success. One additional problem is that the values are in an array that contains 5 dates but only the first 4 get displayed. Any solutions will be appreciated. Below is the code.
struct LineChart: View {
private var localArray: [TradingDayPrices]
init(passedInArray: [TradingDayPrices]) {
self.localArray = passedInArray
}
var body: some View {
let minCloseValue: Double = localArray.map { $0.close }.min()!
let maxCloseValue: Double = localArray.map { $0.close }.max()!
let minDate: Date = localArray[0].timeStamp!
let itemCount: Int = localArray.count - 1
let maxDate: Date = localArray[itemCount].timeStamp!
Spacer()
GroupBox (label: Text("VOO Closing Values For The Past Year")
.font(.system(size: 20))
.fontWeight(.bold)
.frame(width: 700, height: 50, alignment: .center)) {
Chart {
ForEach(localArray) { item in
LineMark (
x: .value("TimeStamp", item.timeStamp!),
y: .value("Close", item.close)
)
.foregroundStyle(Color.blue)
.lineStyle(StrokeStyle(lineWidth: 1.25))
} // end for each
} // end chart
.padding(50)
.chartBackground { item in
Color.white
}
.chartXAxisLabel(position: .bottom, alignment: .center) {
Text("Date")
.font(.system(size: 14))
.foregroundColor(Color.black)
.frame(width: 50, height: 35, alignment: .bottom)
}
.chartYAxisLabel(position: .leading, alignment: .center, spacing: 0) {
Text("Closing Values")
.font(.system(size: 14))
.foregroundColor(Color.black)
}
.chartXAxis {
AxisMarks (values: GetXAxisLabels(min: minDate, max: maxDate)) { value in
AxisGridLine(stroke: StrokeStyle(lineWidth: 0.5))
.foregroundStyle(Color.gray)
AxisValueLabel() {
if let localDate = value.as(Date.self) {
let formattedDate = dateToStringFormatter.string(from: localDate)
Text(formattedDate)
.font(.system(size: 12))
.foregroundColor(Color.black)
}
} // end axis value label
} // end axis marks
} // end chart x axis
.chartYAxis {
AxisMarks (position: .leading, values: GetYAxisLabels(min: minCloseValue, max: maxCloseValue)) { value in
AxisGridLine(stroke: StrokeStyle(lineWidth: 0.5))
.foregroundStyle(Color.gray)
AxisValueLabel() {
if let localValue = value.as(Double.self) {
let formattedValue = String(format: "$%.2f", localValue)
Text(formattedValue)
.font(.system(size: 12))
.foregroundColor(Color.black)
}
}
} // end axis marks
} // end chart y axis
.chartXScale(domain: minDate...maxDate)
.chartYScale(domain: minCloseValue...maxCloseValue)
.frame(width: 700, height: 700, alignment: .center)
} // end group box
} // end of body
} // end of structure
func GetXAxisLabels(min: Date, max: Date) -> [Date] {
var xLabels: [Date] = []
let increment: Int = 90
for i in 0...3 {
let value = Calendar.current.date(byAdding: DateComponents(day: (i * increment)), to: min)!
xLabels.append(value)
}
xLabels.append(max)
print("\(xLabels)")
return xLabels
}
func GetYAxisLabels(min: Double, max: Double) -> [Double] {
var yLabels: [Double] = []
let increment: Double = (max - min) / 4
for i in 0...3 {
let value = min + (Double(i) * increment)
yLabels.append(value)
}
yLabels.append(max)
return yLabels
}
let dateToStringFormatter: DateFormatter = {
let result = DateFormatter()
result.dateFormat = "MM/dd/yy"
return result
}()
Post not yet marked as solved
Hello,
The following code displays the correct data but I am unable to figure out how to format the tables headings , including font size and alignment. Any help in pointing me in the right direction will be appreciated.
Chris
struct SummaryTable: View {
private var localArray: [TradingDayPrices]
init(passedInArray: [TradingDayPrices]) {
self.localArray = passedInArray
}
var body: some View {
let funds: [Fund] = GetSummaryTable(localArray: localArray)
Table(funds) {
TableColumn("Index Fund") { value in
Text(value.name)
.padding(.vertical, 2)
}
.width(90)
TableColumn("Shares") { value in
HStack {
Spacer()
Text(value.shares)
Spacer()
}
}
.width(90)
TableColumn("Share Price") { value in
HStack {
Spacer()
Text(value.sharePrice)
Spacer()
}
}
.width(90)
TableColumn("Total") { value in
HStack {
Spacer()
Text(value.total)
}
}
.width(110)
TableColumn("One Year Gain") { value in
HStack {
Spacer()
Text(value.percentChange)
Spacer()
}
}
.width(90)
} // end table
.tableStyle(.inset(alternatesRowBackgrounds: true))
.padding([.leading, .trailing], 185)
.padding([.top], 30)
.padding([.bottom], 700)
}
}
I have some test code in which I am attempting to create a spreadsheet style grid with data. The code creates a grid but I am unable to get the bottom border of one row to overlap the top border of the row below it but I can get it to work left to right with padding using a negative trailing border. Any assistance would be appreciated. Below is the code:
import SwiftUI
struct DateAndClose {
let date: Date
let close: Double
}
func BuildArray() -> [DateAndClose] {
var dataArray: [DateAndClose] = []
dataArray.append(DateAndClose(date: Date(), close: 123.4))
dataArray.append(DateAndClose(date: Date() + 10, close: 245.8))
dataArray.append(DateAndClose(date: Date() + 30, close: 329.3))
dataArray.append(DateAndClose(date: Date() + 45, close: 438.9))
return dataArray
}
struct Test: View {
let heading: String
var body: some View {
let moArray: [DateAndClose] = BuildArray()
Text("")
Text(heading)
.font(.system(size: 18, weight: .bold, design: .default))
.foregroundColor(.blue)
.padding(.trailing, 24)
Text("")
List(moArray, id: \.date) { element in
ListRow1(element: element)
}
.frame(width: 250)
.background(Color.gray)
Spacer()
}
}
struct ListRow1: View {
let element: DateAndClose
var body: some View {
let theDate = dateToStringFormatter.string(from: element.date)
let theClose = String(format: "$%.2f", element.close )
let frameWidth: CGFloat = 100
let frameHeight: CGFloat = 25
let trailingPadding: CGFloat = -8.55
let bottomPadding: CGFloat = -4.8
HStack(){
Spacer()
Text(theDate)
.font(.system(size: 14, weight: .regular, design: .default))
.background(.white)
.frame(width: frameWidth, height: frameHeight, alignment: .center)
.border(.black, width: 1)
.padding(.trailing, trailingPadding)
.padding(.bottom, bottomPadding)
Text(theClose)
.font(.system(size: 14, weight: .regular, design: .default))
.background(.white)
.frame(width: frameWidth, height: frameHeight, alignment: .center)
.border(.black, width: 1)
.padding(.bottom, bottomPadding)
Spacer()
}
}
}
let dateToStringFormatter: DateFormatter = {
let result = DateFormatter()
result.dateFormat = "MM/dd/yy"
result.timeZone = TimeZone(secondsFromGMT: 0)
return result
}()
During the upgrade to Ventura it appears that Xcode was also upgraded to 14.0.1. In an attempt to use a new feature, Charts, I entered into a macOS app import Charts and I get an error message no such module Charts. If I use the same import Charts in an iOS app I do not get such an error. I am wondering if Charts in not available for macOS apps or did something go wrong during the Ventura upgrade. If it is the later, it makes sense to me to cleanly uninstall Xcode and reinstall. But it is unclear if just dragging Xcode from the application folder to the trash and emptying the trash completely uninstalls Xcode. As a side note, I do not ever remember Xcode being upgraded during an upgrade to macOS. Any input will be appreciated.
I have a working program utilizing the MVVM architecture. There are 3 view models and 3 models. In the first model called I do some testing and would like to pass the result of that testing, a boolean, to the other two models. I have tried to create a class with a boolean, create an instance in the content view and pass it into one of the view models. I would then pass it into the corresponding model. Unfortunately I have been unable to get it to work i.e. pass an instance of the class into the view model. If you see a fix to this approach or have a better approach please let me know. The failure message I get is related to attempting to pass csvData to vooVM. The message is => Cannot use instance member 'csvData' within property initializer; property initializers run before 'self' is available.
My Class that contains the boolean that would be set in the first model and passed to the two other models via their view models:
class CSVData: ObservableObject {
var updated: Bool = false
}
My Struct Content View initial section:
struct ContentView: View {
var csvData: CSVData
// The following line gives the above mentioned error message
@StateObject private var vooVM = VOOVM(csvData: csvData)
@StateObject private var vfiaxVM = VFIAXVM()
@StateObject private var prinVM = PrincipalVM()
@State private var selectedItemID: Int?
let bottomPadding: CGFloat = 2
init() {
self.csvData = CSVData()
}
var body: some View {
My View Model initial section:
class VOOVM: ObservableObject {
var ContainerValues1: [CommonAttributes] = []
var ContainerValues5: [CommonAttributes] = []
var MinAndMaxClose1: [String:Double] = [:]
var MinAndMaxClose5: [String:Double] = [:]
private var vooModel: VOOModel = VOOModel()
var symbol: String
var shares: Double
var csvData: CSVData
init(csvData: CSVData) {
self.csvData = csvData
ChrisMH.