質問編集履歴
3
追記
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ああああああああああああああああああ
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を参考に棒グラフを作成しています。
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サイトでは仮データとして、Int型とString型の配列を使われていますが、
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オリジナルとして、この棒グラフにDate型とInt型の配列を適用したいです。
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以下のコードがサイトのコードを少し改変したオリジナルコードです。
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ただ、このままだと、barChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: items.map({ $0.date}))の行で、Cannot convert value of type 'Date' to closure result type 'String'エラーが発生します。date型を適用するためには、この行をどのように変更すれば良いか教えて下さい。
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```ここに言語を入力
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import UIKit
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import Charts
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import FirebaseFirestore
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struct BarChartModel {
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let plice: Int
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let date: Date
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}
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class ChartViewController: UIViewController {
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@IBOutlet weak var scrollView: UIScrollView!
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lazy var maxVal: Int = barItems.map({ $0.0 }).max()!
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var barItems: [(plice: Int, date: Date)] = []
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var foodData: FoodData!
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func setData(_ foodData: FoodData) {
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barItems.append(contentsOf: [(foodData.plice, foodData.date)])
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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scrollView.frame = CGRect(x: 0,y: 0,width: scrollView.superview!.frame.width,height: scrollView.superview!.frame.height)
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let contentsView = createContentsView(of: barItems.map({ BarChartModel(plice: $0.0, date: $0.1 ) }),barsCountPerPage: 7)
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scrollView.addSubview(contentsView)
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scrollView.contentSize = contentsView.frame.size
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scrollView.isPagingEnabled = true
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setData(foodData)
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}
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func createBarChartView(of items: [BarChartModel]) -> BarChartView {
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let barChartView = BarChartView()
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barChartView.delegate = self
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barChartView.animate(yAxisDuration: 1)
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barChartView.data = createBarChartData(of: items.map({BarChartModel(plice: $0.plice, date: $0.date)}))
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barChartView.xAxis.labelCount = barItems.count
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barChartView.xAxis.labelPosition = .bottom
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barChartView.xAxis.drawGridLinesEnabled = false
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barChartView.xAxis.valueFormatter = DateIntervalFormatter(values: items.map({ $0.date })) as! IAxisValueFormatter
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barChartView.leftAxis.enabled = false
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barChartView.rightAxis.enabled = false
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barChartView.legend.enabled = false
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barChartView.pinchZoomEnabled = false
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barChartView.doubleTapToZoomEnabled = false
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barChartView.leftAxis.axisMaximum = Double(maxVal) + 1
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return barChartView
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}
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private func createBarChartData(of items: [BarChartModel]) -> BarChartData {
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let entries: [BarChartDataEntry] = items.enumerated().map {
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let (i, item) = $0
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return BarChartDataEntry(x: Double(i), y: Double(item.plice))
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}
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let barChartDataSet = BarChartDataSet(entries: entries, label: "Label")
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barChartDataSet.valueFont = .systemFont(ofSize: 20)
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barChartDataSet.valueFormatter = ValueFormatter(of: items)
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barChartDataSet.colors = items.map { $0.plice == maxVal ? .systemOrange : .systemBlue }
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let barChartData = BarChartData(dataSet: barChartDataSet)
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return barChartData
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}
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private func createContentsView(of items: [BarChartModel], barsCountPerPage: Int) -> UIView {
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let itemsPerPage = stride(from: 0, to: items.count, by: barsCountPerPage).map { Array(items[$0 ..< min($0 + barsCountPerPage, items.count)]) }
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let contentsView = UIView(frame: CGRect(x: 0, y: 0, width: scrollView.frame.width * CGFloat(itemsPerPage.count), height: scrollView.frame.height))
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for (i, items) in itemsPerPage.enumerated() {
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let barChartView = createBarChartView(of: items)
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let percent = CGFloat(items.count) / CGFloat(itemsPerPage[0].count)
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barChartView.frame = CGRect(x: scrollView.frame.width * CGFloat(i), y: 0, width: scrollView.frame.width * percent, height:scrollView.frame.height)
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contentsView.addSubview(barChartView)
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}
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return contentsView
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}
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}
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extension ChartViewController: ChartViewDelegate {
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func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) {
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let axisFormatter = chartView.xAxis.valueFormatter!
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let label = axisFormatter.stringForValue(entry.x, axis: nil)
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print(label, entry.y)
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}
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}
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class ValueFormatter: IValueFormatter {
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let items: [BarChartModel]
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init(of items: [BarChartModel]) {
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self.items = items
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}
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func stringForValue(_ value: Double, entry: ChartDataEntry, dataSetIndex: Int, viewPortHandler: ViewPortHandler?) -> String {
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return "(Int(value))"
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}
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}
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class XAxisFormatter: IAxisValueFormatter {
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let items: [BarChartModel]
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init(of items: [BarChartModel]) {
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self.items = items
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}
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func stringForValue(_ value: Double, axis: AxisBase?) -> String {
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let index = Int(value)
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return self.items[index].date
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}
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}
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```
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```ここに言語を入力
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import UIKit
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import FirebaseFirestore
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import FirebaseAuth
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class FoodData: NSObject {
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var id: String
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var food: String
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var number: Int
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var plice: Int
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var pliceArray: [Int]
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var date: Date
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var dateArray: [Date]
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init(document: QueryDocumentSnapshot) {
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self.id = document.documentID
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let foodDic = document.data()
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self.food = foodDic["food"] as! String
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self.number = foodDic["number"] as! Int
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self.plice = foodDic["plice"] as! Int
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self.pliceArray = [self.plice]
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let timeStamp = foodDic["date"] as! Timestamp
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self.date = timeStamp.dateValue()
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self.dateArray = [self.date]
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}
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}
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```
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1
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ああああああああああああああああああああああああああああああああああ
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2
追加
title
CHANGED
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File without changes
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body
CHANGED
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@@ -21,10 +21,10 @@
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lazy var maxVal: Int = barItems.map({ $0.0 }).max()!
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var barItems: [(plice: Int, date: Date)] = []
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var
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var foodData: FoodData!
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func setData(_
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func setData(_ foodData: FoodData) {
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barItems.append(contentsOf: [(
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barItems.append(contentsOf: [(foodData.plice, foodData.date)])
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}
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override func viewDidLoad() {
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scrollView.addSubview(contentsView)
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scrollView.contentSize = contentsView.frame.size
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scrollView.isPagingEnabled = true
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setData(
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setData(foodData)
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}
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func createBarChartView(of items: [BarChartModel]) -> BarChartView {
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barChartView.xAxis.labelCount = barItems.count
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barChartView.xAxis.labelPosition = .bottom
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barChartView.xAxis.drawGridLinesEnabled = false
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barChartView.xAxis.valueFormatter =
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barChartView.xAxis.valueFormatter = DateIntervalFormatter(values: items.map({ $0.date })) as! IAxisValueFormatter
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barChartView.leftAxis.enabled = false
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barChartView.rightAxis.enabled = false
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barChartView.legend.enabled = false
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}
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class XAxisFormatter: IAxisValueFormatter {
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let items: [BarChartModel]
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init(of items: [BarChartModel]) {
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self.items = items
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}
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func stringForValue(_ value: Double, axis: AxisBase?) ->
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func stringForValue(_ value: Double, axis: AxisBase?) -> String {
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let index = Int(value)
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return self.items[index].date
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}
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追加
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File without changes
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@@ -109,5 +109,32 @@
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return self.items[index].date
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}
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}
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```
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```ここに言語を入力
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import UIKit
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import FirebaseFirestore
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import FirebaseAuth
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class FoodData: NSObject {
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var id: String
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var food: String
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var number: Int
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var plice: Int
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var pliceArray: [Int]
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var date: Date
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var dateArray: [Date]
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init(document: QueryDocumentSnapshot) {
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self.id = document.documentID
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let foodDic = document.data()
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self.food = foodDic["food"] as! String
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self.number = foodDic["number"] as! Int
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self.plice = foodDic["plice"] as! Int
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self.pliceArray = [self.plice]
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let timeStamp = foodDic["date"] as! Timestamp
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self.date = timeStamp.dateValue()
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self.dateArray = [self.date]
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}
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}
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```
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