ios - chartValueSelected never gets called

Question

I utilize https://github.com/danielgindi/Charts in my project.

Here is my code, this is how I declare my ViewController class:

class ViewController: UIViewController, ChartViewDelegate

declaration of chartView

@IBOutlet weak var chartView: LineChartView!

inside viewDidLoad()

self.chartView.delegate = self

and this is how I implement delegate method

func chartValueSelected(chartView: ChartViewBase, entry: ChartDataEntry, dataSetIndex: Int, highlight: Highlight)
{
    print(dataSetIndex)
}

For some reason, when I swipe across the chart, this method never gets called. Any ideas why this might happen?

Thanks in advance

Answer 1

As I may have expected, the problem was Swift 3 difference in method signature.

Swift 3

func chartValueSelected(_ chartView: ChartViewBase, entry: ChartDataEntry, highlight: Highlight) { ... }