iOS 使用Charts框架 折线,柱状,K线,饼状,雷达全攻略

我是前言: 大约几个月前我在某平台写了一篇文章, 文中简单地介绍了Charts两种图表的样式的使用, 不过有种意犹未尽的感觉, 利用周末的空闲时间再次看了看, 有了新的收获, 今天发出来,分享给大家, 来稍加详细的再次走进Charts的世界. 完全纯代码.

经过测试:

1.1使用cocoa pods集成(只能在9.3之后运行), 有知道原因的请在下方评论

1.2 这篇文章的例子我是使用手动加入的framework进行测试的. 如果你不清楚如何加入三方框架请点击看看这篇文章http://www.jianshu.com/p/fd91c10c9f55  如果模拟器能运行, 真机不能运行, 一定看这篇

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这篇你可以看到下面这些

• LineChartView —– 折线

• BarChartView —— 柱状

• CandleStickChartView—–K线

• PieChartView —–饼状

• RadarChartView —– 雷达

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还有这些你看不到0.-, 用法大同小异吧…

折线图 – LineChartView

// 创建-

func createLineChartView()

{

chartView = LineChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))

// 签协议

chartView.delegate = self

chartView.backgroundColor = UIColor.whiteColor()

self.view.addSubview(chartView)

}

折线

// 加上模拟数据

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)

// 加上一个界限, 演示图中红色的线

let jx = ChartLimitLine(limit: 12.0, label: "I am LimitLine")

chartView.rightAxis.addLimitLine(jx)

chartView.data = chartData

// 自定义颜色

// colors 是一个数组, 可以给相应的颜色

chartDataSet.colors = [UIColor.redColor()]

chartDataSet.colors = ChartColorTemplates.colorful()

chartView.animate(yAxisDuration: 1.0, easingOption: .EaseInBounce)

}

柱状图- BarChartView

func createLineChartView()

{

chartView = BarChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))

// 签协议

chartView.delegate = self

chartView.backgroundColor = UIColor.whiteColor()

self.view.addSubview(chartView)

}

柱状

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)

// 加上一个界限, 演示图中红色的线

let jx = ChartLimitLine(limit: 12.0, label: "I am LimitLine")

chartView.rightAxis.addLimitLine(jx)

chartView.data = chartData

// 自定义颜色

// 例子中有十二个柱状图

// colors 是一个数组, 可以给相应的颜色

chartDataSet.colors = [UIColor.blueColor(), UIColor.redColor(), UIColor.cyanColor(), UIColor.greenColor(), UIColor.brownColor(), UIColor.purpleColor()]

// API 自带颜色模板

//        chartDataSet.colors = ChartColorTemplates.liberty()

chartView.animate(yAxisDuration: 1.0, easingOption: .EaseInBounce)

}

K线图- CandleStickChartView

K线

chartView = CandleStickChartView.init(frame: CGRectMake(0, 64, s_w, s_h - 64))

// 签协议

chartView.delegate = self

chartView.backgroundColor = UIColor.whiteColor()

// 画板颜色

chartView.gridBackgroundColor = UIColor.clearColor()

//

chartView.borderColor = UIColor.whiteColor()

self.view.addSubview(chartView)

// 横轴数据

var xValues = [String]()

for i in 0...25 {

xValues.append(NSString(format: "%d", i + 1993) as String)

}

// 初始化CandleChartDataEntry数组

var yValues = [CandleChartDataEntry]()

// 产生20个随机立柱数据

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 )

// 立线的宽度

set1.shadowWidth = 0.7

// close >= open

set1.decreasingColor = UIColor.redColor()

// 内部是否充满颜色

set1.decreasingFilled = true

// open > close

set1.increasingColor = UIColor ( red: 0.0006, green: 0.2288, blue: 0.001, alpha: 1.0 )

// 内部是否充满颜色

set1.increasingFilled = true

// 赋值数据

let data = CandleChartData(xVals: xValues, dataSet: set1)

chartView.data = data

饼状图- PieChartView

pieChartView = PieChartView.init(frame: CGRectMake(0, 0, s_w, s_h))

pieChartView.delegate = self;

// 可以调整大小, 位置

//        pieChartView.setExtraOffsets(left: 20.0, top: 0.0, right: 20.0, bottom: 0.0)

self.view.addSubview(pieChartView)

var yValues = [BarChartDataEntry]()

// 最好从0 开始. 否则第一个将失去点击效果, 并出现bug...

for i in 0...5 {

// 占比数据

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标注百分比, 你需要这样.

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

雷达图- RadarChartView

radarBarChartView = RadarChartView.init(frame: CGRectMake(0, 0, s_w, s_h))

// 描述文字

radarBarChartView.descriptionText = "I am destext"

// 指向定点线的宽度

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

相对图表进行操作, 例如点击 请使用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)

毕竟是将近10000Star的库, 介绍的有限, 如果你还感兴趣, 请仔细阅读API吧.

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