編集履歴

質問編集履歴

追記

2021/11/13 05:19

投稿

スコア11

test CHANGED Viewed

	@@ -1 +1 @@
1	- ~~chartsを使った棒グラフ~~
1	+ ああああああああああああああああああ

test CHANGED Viewed

@@ -1,281 +1 @@
-https://bombrary.github.io/blog/posts/iphone-barchart-ioscharts/
-を参考に棒グラフを作成しています。
-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、
-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。
-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。
-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。
-```ここに言語を入力
-import UIKit
-import Charts
-import FirebaseFirestore
-struct BarChartModel {
-    let plice: Int
-    let date: Date
-}
-class ChartViewController: UIViewController {
-    @IBOutlet weak var scrollView: UIScrollView!
-    lazy var maxVal: Int = barItems.map({ $0.0 }).max()!
-    var barItems: [(plice: Int, date: Date)] = []
-    var foodData: FoodData!
-    func setData(_ foodData: FoodData) {
-        barItems.append(contentsOf: [(foodData.plice, foodData.date)])
-    }
-    override func viewDidLoad() {
-        super.viewDidLoad()
-        scrollView.frame = CGRect(x: 0,y: 0,width: scrollView.superview!.frame.width,height: scrollView.superview!.frame.height)
-        let contentsView = createContentsView(of: barItems.map({ BarChartModel(plice: $0.0, date: $0.1 ) }),barsCountPerPage: 7)
-        scrollView.addSubview(contentsView)
-        scrollView.contentSize = contentsView.frame.size
-        scrollView.isPagingEnabled = true
-        setData(foodData)
-    }
-    func createBarChartView(of items: [BarChartModel]) -> BarChartView {
-        let barChartView = BarChartView()
-        barChartView.delegate = self
-        barChartView.animate(yAxisDuration: 1)
-        barChartView.data = createBarChartData(of: items.map({BarChartModel(plice: $0.plice, date: $0.date)}))
-        barChartView.xAxis.labelCount = barItems.count
-        barChartView.xAxis.labelPosition = .bottom
-        barChartView.xAxis.drawGridLinesEnabled = false
-        barChartView.xAxis.valueFormatter = DateIntervalFormatter(values: items.map({ $0.date })) as! IAxisValueFormatter
-        barChartView.leftAxis.enabled = false
-        barChartView.rightAxis.enabled = false
-        barChartView.legend.enabled = false
-        barChartView.pinchZoomEnabled = false
-        barChartView.doubleTapToZoomEnabled = false
-        barChartView.leftAxis.axisMaximum = Double(maxVal) + 1
-        return barChartView
-    }
-    private func createBarChartData(of items: [BarChartModel]) -> BarChartData {
-        let entries: [BarChartDataEntry] = items.enumerated().map {
-            let (i, item) = $0
-            return BarChartDataEntry(x: Double(i), y: Double(item.plice))
-        }
-        let barChartDataSet = BarChartDataSet(entries: entries, label: "Label")
-        barChartDataSet.valueFont = .systemFont(ofSize: 20)
-        barChartDataSet.valueFormatter = ValueFormatter(of: items)
-        barChartDataSet.colors = items.map { $0.plice == maxVal ? .systemOrange : .systemBlue }
-        let barChartData = BarChartData(dataSet: barChartDataSet)
-        return barChartData
-    }
-    private func createContentsView(of items: [BarChartModel], barsCountPerPage: Int) -> UIView {
-        let itemsPerPage = stride(from: 0, to: items.count, by: barsCountPerPage).map { Array(items[$0 ..< min($0 + barsCountPerPage, items.count)]) }
-        let contentsView = UIView(frame: CGRect(x: 0, y: 0, width: scrollView.frame.width * CGFloat(itemsPerPage.count), height: scrollView.frame.height))
-        for (i, items) in itemsPerPage.enumerated() {
-            let barChartView = createBarChartView(of: items)
-            let percent = CGFloat(items.count) / CGFloat(itemsPerPage[0].count)
-            barChartView.frame = CGRect(x: scrollView.frame.width * CGFloat(i), y: 0, width: scrollView.frame.width * percent, height:scrollView.frame.height)
-            contentsView.addSubview(barChartView)
-        }
-        return contentsView
-    }
-}
-extension ChartViewController: ChartViewDelegate {
-    func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) {
-        let axisFormatter = chartView.xAxis.valueFormatter!
-        let label = axisFormatter.stringForValue(entry.x, axis: nil)
-        print(label, entry.y)
-    }
-}
-class ValueFormatter: IValueFormatter {
-    let items: [BarChartModel]
-    init(of items: [BarChartModel]) {
-        self.items = items
-    }
-    func stringForValue(_ value: Double, entry: ChartDataEntry, dataSetIndex: Int, viewPortHandler: ViewPortHandler?) -> String {
-        return "(Int(value))"
-    }
-}
-class XAxisFormatter: IAxisValueFormatter {
-    let items: [BarChartModel]
-    init(of items: [BarChartModel]) {
-        self.items = items
-    }
-    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
-        let index = Int(value)
-        return self.items[index].date
-    }
-}
-```
-```ここに言語を入力
-import UIKit
-import FirebaseFirestore
-import FirebaseAuth
-class FoodData: NSObject {
-    var id: String
-    var food: String
-    var number: Int
-    var plice: Int
-    var pliceArray: [Int]
-    var date: Date
-    var dateArray: [Date]
-    init(document: QueryDocumentSnapshot) {
-        self.id = document.documentID
-        let foodDic = document.data()
-        self.food = foodDic["food"] as! String
-        self.number = foodDic["number"] as! Int
-        self.plice = foodDic["plice"] as! Int
-        self.pliceArray = [self.plice]
-        let timeStamp = foodDic["date"] as! Timestamp
-        self.date = timeStamp.dateValue()
-        self.dateArray = [self.date]
-    }
-}
-```
+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

追加

2021/11/13 05:19

投稿

rararara

スコア11

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -44,13 +44,13 @@
     var barItems: [(plice: Int, date: Date)] = []
-    var barData: BarData!
+    var foodData: FoodData!
-    func setData(_ data: FoodData) {
+    func setData(_ foodData: FoodData) {
-        barItems.append(contentsOf: [(data.plice, data.date)])
+        barItems.append(contentsOf: [(foodData.plice, foodData.date)])
     }
@@ -70,7 +70,7 @@
         scrollView.isPagingEnabled = true
-        setData(barData)
+        setData(foodData)
     }
@@ -92,7 +92,7 @@
         barChartView.xAxis.drawGridLinesEnabled = false
-        barChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values: items.map({ $0.1}))
+        barChartView.xAxis.valueFormatter = DateIntervalFormatter(values: items.map({ $0.date })) as! IAxisValueFormatter
         barChartView.leftAxis.enabled = false
@@ -202,6 +202,8 @@
 class XAxisFormatter: IAxisValueFormatter {
     let items: [BarChartModel]
     init(of items: [BarChartModel]) {
@@ -210,7 +212,7 @@
     }
-    func stringForValue(_ value: Double, axis: AxisBase?) -> Date {
+    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
         let index = Int(value)

追加

2021/11/08 14:11

投稿

rararara

スコア11

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -220,6 +220,60 @@
 }
 ```
+```ここに言語を入力
+import UIKit
+import FirebaseFirestore
+import FirebaseAuth
+class FoodData: NSObject {
+    var id: String
+    var food: String
+    var number: Int
+    var plice: Int
+    var pliceArray: [Int]
+    var date: Date
+    var dateArray: [Date]
+    init(document: QueryDocumentSnapshot) {
+        self.id = document.documentID
+        let foodDic = document.data()
+        self.food = foodDic["food"] as! String
+        self.number = foodDic["number"] as! Int
+        self.plice = foodDic["plice"] as! Int
+        self.pliceArray = [self.plice]
+        let timeStamp = foodDic["date"] as! Timestamp
+        self.date = timeStamp.dateValue()
+        self.dateArray = [self.date]
+    }
+}
+```