更新 最新版本 語(yǔ)法已經(jīng)改變 2017-3-31

我是前言: 大約幾個(gè)月前我在簡(jiǎn)書寫了一篇文章, 文中簡(jiǎn)單地介紹了Charts兩種圖表的樣式的使用, 不過(guò)有種意猶未盡的感覺(jué), 利用周末的空閑時(shí)間再次看了看, 有了新的收獲, 今天發(fā)出來(lái),分享給大家, 來(lái)稍加詳細(xì)的再次走進(jìn)Charts的世界. 完全純代碼.

說(shuō)在前面的話： 這篇的篇幅確實(shí)是有些長(zhǎng), 不過(guò)你可以會(huì)一些圖表的tips, 還能熟悉Swift語(yǔ)言的語(yǔ)法. #感覺(jué)不錯(cuò)請(qǐng)點(diǎn)個(gè)贊# 摸摸噠(冷漠臉.png), 如果還想看更多關(guān)于Swift和iOS開(kāi)發(fā)相關(guān)的知識(shí), 請(qǐng)關(guān)注我.

集成- Charts

1.1使用cocoa pods集成 你可能出現(xiàn)這樣的問(wèn)題

只能在iOS 9.3

// 解決
platform :ios, '8.0' // 你可能在Podfile中少加入了這句
use_frameworks!
pod 'Charts', '~> 2.2.5'

1.2 這篇文章的例子我是使用手動(dòng)加入的framework進(jìn)行測(cè)試的（iOS8.0之后）. 如果你不清楚如何加入三方框架請(qǐng)點(diǎn)擊看看這篇文章http://www.reibang.com/p/fd91c10c9f55

(注: 如果模擬器能運(yùn)行, 真機(jī)不能運(yùn)行, 一定看這篇)

這篇你可以看到下面這些

• LineChartView ----- 折線
• BarChartView ------ 柱狀
• CandleStickChartView-----K線
• PieChartView -----餅狀
• RadarChartView ----- 雷達(dá)

當(dāng)然還有一些其他的你看不到0.-, 不過(guò)用法大同小異, 演示這幾種相信其他的類型你也同樣會(huì)使用了 下面進(jìn)入代碼演示.

折線圖 - LineChartView

折線

// 創(chuàng)建-
func createLineChartView()
    {
        chartView = LineChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))
        chartView.lineData
        // 簽協(xié)議
        chartView.delegate = self
        chartView.backgroundColor = UIColor.whiteColor()
        self.view.addSubview(chartView)
    }

// 加上模擬數(shù)據(jù)
func setChart(dataPoints: [String], values: [Double]) {
        var dataEntries: [ChartDataEntry] = []
        for i in 0..<dataPoints.count {
            let dataEntry = ChartDataEntry(value: values[i], xIndex: i)
            dataEntries.append(dataEntry)
        }
        let chartDataSet = LineChartDataSet(yVals: dataEntries, label: "Units Sold")
        let chartData = LineChartData(xVals: months, dataSet: chartDataSet)
        // 加上一個(gè)界限, 演示圖中紅色的線
        let jx = ChartLimitLine(limit: 12.0, label: "I am LimitLine")
        chartView.rightAxis.addLimitLine(jx)
        chartView.data = chartData
        // 自定義顏色
        // colors 是一個(gè)數(shù)組, 可以給相應(yīng)的顏色
        chartDataSet.colors = [UIColor.redColor()]
        chartDataSet.colors = ChartColorTemplates.colorful()
        chartView.animate(yAxisDuration: 1.0, easingOption: .EaseInBounce)
    }

柱狀圖- BarChartView

柱狀

func createLineChartView()
    {
        chartView = BarChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))
        chartView.barData
        // 簽協(xié)議
        chartView.delegate = self
        chartView.backgroundColor = UIColor.whiteColor()
        self.view.addSubview(chartView)
    }

func setChart(dataPoints: [String], values: [Double]) {
        var dataEntries: [BarChartDataEntry] = []
        for i in 0..<dataPoints.count {
            let dataEntry = BarChartDataEntry(value: values[i], xIndex: i)
            dataEntries.append(dataEntry)
        }
        let chartDataSet = BarChartDataSet(yVals: dataEntries, label: "Units Sold")
        let chartData = BarChartData(xVals: months, dataSet: chartDataSet)
        // 加上一個(gè)界限, 演示圖中紅色的線
        let jx = ChartLimitLine(limit: 12.0, label: "I am LimitLine")
        chartView.rightAxis.addLimitLine(jx)
        chartView.data = chartData
        // 自定義顏色
        // 例子中有十二個(gè)柱狀圖
        // colors 是一個(gè)數(shù)組, 可以給相應(yīng)的顏色
        chartDataSet.colors = [UIColor.blueColor(), UIColor.redColor(), UIColor.cyanColor(), UIColor.greenColor(), UIColor.brownColor(), UIColor.purpleColor()]
        // API 自帶顏色模板
//        chartDataSet.colors = ChartColorTemplates.liberty()
        chartView.animate(yAxisDuration: 1.0, easingOption: .EaseInBounce)
    }

K線圖- CandleStickChartView

K線

chartView = CandleStickChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))
            // 簽協(xié)議
            chartView.delegate = self
            chartView.backgroundColor = UIColor.whiteColor()
            // 畫板顏色
            chartView.gridBackgroundColor = UIColor.clearColor()
            //
            chartView.borderColor = UIColor.whiteColor()
            self.view.addSubview(chartView)
            // 橫軸數(shù)據(jù)
            var xValues = [String]()
            for i in 0...25 {
                xValues.append(NSString(format: "%d", i + 1993) as String)
            }
            // 初始化CandleChartDataEntry數(shù)組
            var yValues = [CandleChartDataEntry]()
            // 產(chǎn)生20個(gè)隨機(jī)立柱數(shù)據(jù)
            for j in 0...24 {
                let val = (Double)(arc4random_uniform(40))
                let high = (Double)(arc4random_uniform(9)) + 8.0
                let low = (Double)(arc4random_uniform(9)) + 8.0
                let open = (Double)(arc4random_uniform(6)) + 1.0
                let close = (Double)(arc4random_uniform(6)) + 1.0
                
                let even = j % 2 == 0
                
                yValues.append(CandleChartDataEntry.init(xIndex: j, shadowH: val + high, shadowL: val - low, open: even ? val + open : val - open, close: even ? val - close : val + close))
            }
            let set1 = CandleChartDataSet.init(yVals: yValues, label: "data set")
            // defult left
            // set1.axisDependency
            // data set color
            set1.setColor(UIColor.blueColor())
            set1.shadowColor = UIColor ( red: 0.5536, green: 0.5528, blue: 0.0016, alpha: 1.0 )
            // 立線的寬度
            set1.shadowWidth = 0.7
            // close >= open
            set1.decreasingColor = UIColor.redColor()
            // 內(nèi)部是否充滿顏色
            set1.decreasingFilled = true
            // open > close
            set1.increasingColor = UIColor ( red: 0.0006, green: 0.2288, blue: 0.001, alpha: 1.0 )
            // 內(nèi)部是否充滿顏色
            set1.increasingFilled = true
            // 賦值數(shù)據(jù)
            let data = CandleChartData(xVals: xValues, dataSet: set1)
            chartView.data = data

餅狀圖- PieChartView

餅狀

pieChartView = PieChartView.init(frame: CGRectMake(0, 0, s_w, s_h))
        pieChartView.delegate = self;
        // 可以調(diào)整大小, 位置
//        pieChartView.setExtraOffsets(left: 20.0, top: 0.0, right: 20.0, bottom: 0.0)
        self.view.addSubview(pieChartView)
        var yValues = [BarChartDataEntry]()
        // 最好從0 開(kāi)始. 否則第一個(gè)將失去點(diǎn)擊效果, 并出現(xiàn)bug...
        for i in 0...5 {
            // 占比數(shù)據(jù)
            yValues.append(BarChartDataEntry.init(value: (Double)(arc4random_uniform(5)) + 2.0, xIndex: i))
            
        }
        var xValues = [String]()
        for j in 0...5 {
            // 描述文字
            xValues.append(NSString(format: "%d\\\\("夏天然后")", j + 5) as String)
        }
        //
        let dataSet: PieChartDataSet = PieChartDataSet.init(yVals: yValues, label: "data Set");
        // 空隙
        dataSet.sliceSpace = 5.0
        var colors = [UIColor]()
        colors.append(UIColor ( red: 0.8185, green: 0.8172, blue: 0.0023, alpha: 1.0 ))
        colors.append(UIColor ( red: 0.0, green: 0.81, blue: 0.81, alpha: 1.0 ))
        colors.append(UIColor.greenColor())
        colors.append(UIColor.grayColor())
        colors.append(UIColor.purpleColor())
        colors.append(UIColor.blueColor())
        dataSet.colors = colors
        // 如果你需要指示文字在外部標(biāo)注百分比, 你需要這樣.
        dataSet.valueLinePart1OffsetPercentage = 0.8;
        dataSet.valueLinePart1Length = 0.2;
        dataSet.valueLinePart2Length = 0.4;
        dataSet.yValuePosition = .OutsideSlice
        let data = PieChartData(xVals: xValues, dataSet: dataSet)
        let formatter = NSNumberFormatter.init()
        formatter.maximumFractionDigits = 1
        formatter.numberStyle = NSNumberFormatterStyle.PercentStyle
        formatter.multiplier = 1.0
        formatter.percentSymbol = " %"
        data.setValueFormatter(formatter)
        data.setValueTextColor(UIColor.blackColor())
        pieChartView.data = data

雷達(dá)圖- RadarChartView

雷達(dá)

radarBarChartView = RadarChartView.init(frame: CGRectMake(0, 0, s_w, s_h))
        // 描述文字
        radarBarChartView.descriptionText = "I am destext"
        // 指向定點(diǎn)線的寬度
        radarBarChartView.webLineWidth = 2.0
        radarBarChartView.innerWebColor = UIColor.blackColor()
        radarBarChartView.innerWebLineWidth = 0.75
        radarBarChartView.webAlpha = 1.0
        self.view.backgroundColor = UIColor.whiteColor()
        self.view.addSubview(radarBarChartView)
        
        
        var yValues1 = [ChartDataEntry]()
        var yValues2 = [ChartDataEntry]()
        var xValues = [String]()
        for i in 0...8 {
            //
            yValues1.append(ChartDataEntry(value: (Double)(arc4random_uniform(5)), xIndex: i))
            yValues2.append(ChartDataEntry(value: (Double)(arc4random_uniform(5)), xIndex: i))
            //
            xValues.append(NSString(format: "%d\\\\("夏天然后")", i + 5) as String)
        }
        let dataSet = RadarChartDataSet.init(yVals: yValues1, label: "data Set")
        dataSet.drawFilledEnabled = true
        dataSet.setColor(UIColor ( red: 0.7913, green: 0.9949, blue: 0.4941, alpha: 1.0 ))
        dataSet.fillColor = UIColor ( red: 0.7913, green: 0.9949, blue: 0.4941, alpha: 1.0 )
        dataSet.lineWidth = 1.0
        
        let dataSet1 = RadarChartDataSet.init(yVals: yValues2, label: "data Set2")
        dataSet1.drawFilledEnabled = true
        dataSet1.setColor(UIColor ( red: 0.4702, green: 1.0, blue: 0.9962, alpha: 1.0 ))
        dataSet1.fillColor = UIColor ( red: 0.4702, green: 1.0, blue: 0.9962, alpha: 1.0 )
        dataSet1.lineWidth = 1.5
        
        let data = RadarChartData.init(xVals: xValues, dataSets: [dataSet, dataSet1])
        radarBarChartView.data = data

相對(duì)圖表進(jìn)行操作, 例如點(diǎn)擊 請(qǐng)使用ChartViewDelegate

optional public func chartValueSelected(chartView: Charts.ChartViewBase, entry: Charts.ChartDataEntry, dataSetIndex: Int, highlight: Charts.ChartHighlight)
optional public func chartValueNothingSelected(chartView: Charts.ChartViewBase)
optional public func chartScaled(chartView: Charts.ChartViewBase, scaleX: CGFloat, scaleY: CGFloat)
optional public func chartTranslated(chartView: Charts.ChartViewBase, dX: CGFloat, dY: CGFloat)

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走心文章, 值得點(diǎn)贊 ---文/夏天然后尊重原創(chuàng)
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