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highcharts/highcharts-ios
iOS wrapper for Highcharts.
.package(url: "https://github.com/highcharts/highcharts-ios.git", from: "v9.1.2")

Highcharts

Carthage compatible

Highcharts iOS is a delightful wrapper of HighchartsJS for iOS.

The most popular, robust and battle-tested JavaScript Charting library is now available for iOS with our new Objective-C wrapper. Get gorgeous, multi-touch charts with minimal effort.

Documentation

Access the full API documentation here.

HOWTO

Here we present how to create basic chart and place it in your project.

What we need to do

  • Prepare your project for Highcharts
  • Create chart view and place it in your view
  • Create chart options and add them to your chart view
  • Run your app and enjoy!

Preparing your project

  • First of all download Highcharts xcframework from here: Highcharts or by using Cocoapods by adding

    pod 'Highcharts', '~> 9.1.2'
    

    to your Podfile

    or Carthage by adding

    github "https://github.com/highcharts/highcharts-ios" >= 9.1.2
    

    to your Cartfile

    or Swift Package Manager by adding package dependency

    https://github.com/highcharts/highcharts-ios
    
  • Now add Highcharts to your project by simply copying it to your project to folder Frameworks (create it if necessary) and remeber to check "Copy items if needed" option

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  • Click on finish

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  • Then go to your project settings and add Highcharts to Frameworks, Libraries, and Embedded Content with "Embed & Sign" option

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  • If your project is leveraging Xcode UI testing, make sure you add the Highcharts framework to Embedded Binaries for the UITests target as well as the main project target

You are now set to use Highcharts!

Please note when linking manually that binary framework in the 'release' directory is designed to allow uploads to the AppStore. Therefore it does not allow running on iOS Simulator. In order to use simulator, download the repository and use framework that can be found in the 'development' directory. Cocoapods/SPM/XCFramework solve this problem automatically - they introduce a stripping script for AppStore uploads.

Using Highcharts (demo app)

Set AppDelegate

In your AppDelegate.swift import Highcharts at the top

import Highcharts

Add this line to your application:didFinishLaunchingWithOptions method:

HIChartView.preload()

Add HIChartView to your View Controller

In your View Controller .swift file add

import Highcharts

and

var chartView: HIChartView!

Creating chart

Let's start with creating simple chart!

For the purpose of this tutorial, we will create a simple column chart using random data.

In viewDidLoad add following lines

chartView = HIChartView(frame: CGRect(x: view.bounds.origin.x, y: view.bounds.origin.y  +  20, width: view.bounds.size.width, height: 300))

This will create our chartView with defined origin and size.

Done! Now let's create a chart.

The heart of a chart is HIOptions class which contains all the information needed to present it. Some of the options there are optional, some are not (see demo app HighFit provided by Highcharts).

Create instance of HIOptions class

let options = HIOptions()

Now we need to add the options that our chart requires to be presented. Let's start with chart type. To do so, create HIChart class object and set its type to "column"

let chart = HIChart()
chart.type = "column"

Add this object to your options

options.chart = chart

Then let's give our chart a name (title) and also add it to options

let title = HITitle()
title.text = "Demo chart"
options.title = title

Now we need to add some data (in this tutorial it will be some random set of numbers). Since we are creating a column chart, we need to use HIColumn data series

let series = HIColumn()

To add data, just create array of our data objects

series.data = [49.9, 71.5, 106.4, 129.2, 144, 176, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]

Since options can store multiple series, we need to add our series as one-element-array

options.series = [series]

And at last add our options to the chartView

chartView.options = options

Don't forget to add chartView as subview to your View Controller's view! At the end add

view.addSubview(chartView)

That's it! We are now set to run our application! Your View Controller .m file should look like this

import Highcharts
import UIKit

class ViewController: UIViewController {

  var chartView: HIChartView!

  override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view.

    chartView = HIChartView(frame: CGRect(x: view.bounds.origin.x,
                                          y: view.bounds.origin.y + 20,
                                          width: view.bounds.size.width,
                                          height: 300))

    let options = HIOptions()

    let chart = HIChart()
    chart.type = "column"
    options.chart = chart

    let title = HITitle()
    title.text = "Demo chart"
    options.title = title

    let series = HIColumn()
    series.data = [49.9, 71.5, 106.4, 129.2, 144, 176, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    options.series = [series]

    chartView.options = options

    view.addSubview(chartView)
  }

}

Press "Run" in XCode.

For more complex solutions see demo app HighFit provided by Highcharts or read the following documentation!

Additional info

Additional modules

In case of enabling additional module, add it to plugins of HIChartView object before assign your chart options, e.g.

chartView.plugins = ["annotations"]
...
chartView.options = options

HIColor example

Highcharts iOS wrapper provides its own colors implementation. As you can notice, some options are of HIColor type. You can instantiate the desired color in few ways which are described in the API documentation. In here, we will show the most complex case which is gradient usage. For example, you can instantiate a color for chart background:

chart.backgroundColor = HIColor(linearGradient: ["x1": 0, "x2": 0, "y1": 0, "y2": 300],
                                stops: [
                                  [0, "rgb(102, 153, 161)"],
                                  [1, "rgb(128, 135, 232)"]
                                ])

HIFunction example

Thanks to Highcharts iOS wrapper you can now assign native iOS closures to events for specific chart elements. We will show you a small taste of such usage. For these purpose we will let appear a simple alert with point coordinates when it's clicked but keep in mind that you can achieve much more with HIFunction mechanism!

First of all, you need to create a plotOptions object for your series type:

let plotOptions = HIPlotOptions()
plotOptions.series = HISeries()

Now, you can refer to the point event and add on click function like this:

plotOptions.series.point = HIPoint()
plotOptions.series.point.events = HIEvents()
    
let clickFunction = HIFunction(closure: { [weak self] context in
  guard let self = self, let context = context else { return }

  let category = context.getProperty("this.category") ?? "",
      value = context.getProperty("this.y") ?? ""

  let alertMessage = "Category: \(category), value: \(value)"

  let alertController = UIAlertController(title: nil,
                                          message: alertMessage,
                                          preferredStyle: .alert)

  let okAction = UIAlertAction(title: "OK", style: .default, handler: nil)
  alertController.addAction(okAction)

  self.present(alertController, animated: true, completion: nil)
}, properties: ["this.category", "this.y"])

plotOptions.series.point.events.click = clickFunction

options.plotOptions = plotOptions

As you can see in the above code snippet first argument of the HIFunction is the actual closure. Second argument is simple string array of chart elements. We need to put them here to let wrapper pull them for us during HIFunction instantiation. Thanks to this, we can refer to these elements corresponding values by getProperty: method. You can pull any data from chart like this. Depending on the current needs you can just run some code, withdraw data from chart, return a String to the chart (e.g. in HITooltip formatter) and even put pure Javascript function in the constructor in the String format. For more information feel free to check the API documentation.

Custom fonts

Highcharts iOS wrapper allows you to add custom fonts. If you have your own font and want to use that in your chart, follow next steps:

  • Add a font file to your project. Select File -> Add Files to “Your Project Name” from the menu bar or drag and drop the file into your Xcode project, check Copy items if needed option and add the font to your app target.

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  • Add your font to HIChartView. To do this, firstly, you need to get an absolute path pointing to the location of the font and then call addFont: method:
let fontPath = Bundle.main.path(forResource: "Windsong", ofType: "ttf")
HIChartView.addFont(fontPath)

So, now you can use a custom font in your chart. For example, let's change the chart title font. You only need to create a style object for the title and set its font family to the font file name:

title.style = HICSSObject()
title.style.fontFamily = "Windsong"

GitHub

link
Stars: 111
Last commit: 16 hours ago

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iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Release Notes

v9.1.2
16 hours ago

Version 9.1.2

Framework:

  1. Added new option for bullet chart, targetOptions.borderRadius. See #15649.
  2. Improved legend accessibility by placing legend buttons in a list.
  3. Exposed Point.doDrilldown and Axis.drilldownCategory as official API methods.

Framework bug fixes:

  1. Fixed #15401, console warning when loading funnel 3D module, tableValues invalid attribute.
  2. Fixed #15757, heatmap.borderRadius did not work.
  3. Fixed #14780, offline exporting charts with HTML content to PNG or JPEG fell back to the export server even in browsers that supported it.
  4. Fixed issue with extraneous table caption HTML encoding in the export data module.
  5. Fixed #15701, tooltip text alignment broke when setting font size.
  6. Fixed #15811, setting title.verticalAlign to middle did not vertically center the title completely.
  7. Fixed #15667, scatter line showed on hover after updating lineWidth to 0.
  8. Fixed #15639, error when calling removePlotBand after destroying Axis.
  9. Fixed #9612, panning after zooming sometimes broke with pointPlacement set to on or between.
  10. Fixed handling of local time with Safari 14.1.
  11. Fixed #15771, drilldown failed when points were cropped from the start of the series.
  12. Fixed #14403, tooltip covered interactive elements like the legend, buttons or annotations. Added a CSS class, highcharts-no-tooltip that can be applied to elements to prevent the data tooltip covering them.
  13. Fixed #15746, heatmap select state color did not work correctly.
  14. Fixed #15708, heatmap null points missed highcharts-null-point class.
  15. Fixed #15698, Highcharts instance was accessed incorrectly on error.
  16. Fixed #15325, panning multiple axes did not work.
  17. Fixed #15685, boosted scatter chart with empty first series rendered ghost points.
  18. Fixed a scrollablePlotArea regression, tooltip did not show sometimes.
  19. Fixed #15646, zones with no color set were invisible in boosted chart.
  20. Fixed #15640, legend items lost disabled state on keyboard navigation.
  21. Fixed #15654, shadow offset did not get applied on inverted charts.
  22. Fixed #15636, draggable point guide box was not big enough when the point was not fully inside.
  23. Fixed #15607, random stack labels with the value 0 showed when zooming in.
  24. Fixed #15521, inactive state remained on points after exiting chart with keyboard navigation.
  25. Fixed #15841, a regression causing charts to crash some browsers where Intl was missing.
  26. Fixed #15869, boosted rendering sometimes crashed with multiple different chart types.
  27. Fixed #15845, selection marker showed without mousedown after export.
  28. Fixed #15843, shared tooltip with stickOnContact enabled did not always update position.
  29. Made default pattern-fills more subtle and usable. Changed accessible-pie demo for better pattern handling.

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