How to set x-axis labels with ios charts

Proper Solution for X-Axis String labels in Swift 3+

let months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]    barChartView.xAxis.valueFormatter = IndexAxisValueFormatter(values:months)    barChartView.xAxis.granularity = 1

Create a class like this:

    import Foundation    import Charts    @objc(BarChartFormatter)    class ChartFormatter:NSObject,IAxisValueFormatter{    var months: [String]! = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]    func stringForValue(_ value: Double, axis: AxisBase?) -> String {    return months[Int(value)]    }}

Set the x-Axis like this:

    let xAxis=XAxis()    let chartFormmater=ChartFormatter()    for i in index{        chartFormmater.stringForValue(Double(i), axis: xAxis)    }    xAxis.valueFormatter=chartFormmater    chartView.xAxis.valueFormatter=xAxis.valueFormatter

I propose to use more flexible and pretty solution. You should have a formatter class like this:

final class MonthNameFormater: NSObject, IAxisValueFormatter {    func stringForValue( _ value: Double, axis _: AxisBase?) -> String {        return Calendar.current.shortMonthSymbols[Int(value)]    }}

Set up this type to your barChartView:

barChartView.xAxis.valueFormatter = MonthNameFormater()barChartView.xAxis.granularity = 1.0

As a result you will have: Jan, Feb, ..., Dec In addition if you want to change presentation kind you should change shortMonthSymbols with some other: monthSymbols, veryShortMonthSymbols, standaloneMonthSymbols