Charts 功能強大，基本功能及屬性如下：
本文主要講解的是折線圖：）

//添加Charts
        let lineChart = LineChartView()

        chartView.addSubview(lineChart)
        
        lineChart.snp.makeConstraints { (make) in
            make.edges.equalToSuperview().inset(UIEdgeInsetsMake(kDefault_bt_height + kDefault_20_pad + kDefault_lb_height, kDefault_24_pad, kDefault_lb_height, kDefault_24_pad))
        }
        
        let months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun"]
        let unitsSold = [20.0, 4.0, 6.0, 3.0, 12.0, 16.0]
        
        setChart(months, values: unitsSold)

//設置charts方法
 func setChart(_ dataPoints: [String], values: [Double]) {
        var dataEntries: [ChartDataEntry] = []
        
        for i in 0..<dataPoints.count {
            let dataEntry = ChartDataEntry(x: Double(i), y: values[i])
            dataEntries.append(dataEntry)
        }
        
        let lineChartDataSet = LineChartDataSet(values: dataEntries, label: "單位：萬元")
        let lineChartData = LineChartData(dataSet: lineChartDataSet)
        
        lineChart.data = lineChartData
 //右下角圖標描述
        lineChart.chartDescription?.text = "ChartView"
        
        //左下角圖例
//        lineChart.legend.formSize = 30
//        lineChart.legend.form = .square
        lineChart.legend.textColor = kDefault_0x949494_clolr
        
        //設置X軸坐標
        lineChart.xAxis.valueFormatter = IndexAxisValueFormatter(values: dataPoints)
        lineChart.xAxis.granularity = 1.0
        lineChart.xAxis.labelPosition = .bottom
        lineChart.xAxis.drawGridLinesEnabled = false
        lineChart.xAxis.axisLineColor = kDefault_0x949494_clolr
        lineChart.xAxis.labelTextColor = kDefault_0x949494_clolr
        
        //設置Y軸坐標
//        lineChart.rightAxis.isEnabled = false
        //不顯示右側Y軸
        lineChart.rightAxis.drawAxisLineEnabled = false
        //不顯示右側Y軸數字
        lineChart.rightAxis.enabled = false
        lineChart.leftAxis.axisLineColor = kDefault_0x949494_clolr
        lineChart.leftAxis.gridColor = kDefault_0x949494_clolr
        lineChart.leftAxis.labelTextColor = kDefault_0x949494_clolr

        //設置雙擊坐標軸是否能縮放
        lineChart.scaleXEnabled = false
        lineChart.scaleYEnabled = false
        
//        lineChart.dragEnabled = true
//        lineChart.dragDecelerationEnabled = true
        
        //設置圖表背景色和border
        //必須設置enable才能有效
//        lineChart.drawGridBackgroundEnabled = true
//        lineChart.drawBordersEnabled = true
//        lineChart.gridBackgroundColor = UIColor.red
//        lineChart.borderColor = UIColor.orange
//        lineChart.borderLineWidth = 5
        
        //設置折線線條
//        lineChartDataSet.fillColor = kDefault_0xff6600_clolr
//        lineChartDataSet.lineWidth = 4
        
        //外圓
        lineChartDataSet.setCircleColor(kDefault_0xff6600_4_clolr)
        //畫外圓
//        lineChartDataSet.drawCirclesEnabled = true
        //內圓
        lineChartDataSet.circleHoleColor = kDefault_0xff6600_clolr
        //畫內圓
//        lineChartDataSet.drawCircleHoleEnabled = true
        
        //線條顯示樣式
//        lineChartDataSet.lineDashLengths = [1,3,4,2]
//        lineChartDataSet.lineDashPhase = 0.5
        lineChartDataSet.colors = [kDefault_0xff872e_clolr]
        
        //線條上的文字
        lineChartDataSet.valueColors = [kDefault_0xff872e_clolr]
        //顯示
//        lineChartDataSet.drawValuesEnabled = true
        
        //添加顯示動畫
        lineChart.animate(xAxisDuration: 1)
    }

下面是樣式

QQ20161201-0@2x.png

Charts第一次使用就能發現它的強大和無可挑剔，完全可以實現自定義的基本樣式。

-end