Memory Leaks in subclass of LineChartView

[liufannnn]

class MyLineView: LineChartView {
    var xAxisMaximum = 0 {
        didSet {
            if xAxisMaximum > 0 {
                xAxis.axisMaximum = Double(xAxisMaximum)
                xAxis.labelCount = xAxisMaximum
            }
        }
    }
    
    override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    deinit {
        DZPrint("++")
    }
    
    override func awakeFromNib() {
        super.awakeFromNib()
    }

    func setData() {
        let entryArr = (0...24).map { ChartDataEntry(x: Double($0), y: 100) }
        let dataSet = LineChartDataSet(values: entryArr, label: title)
        // leaks here
        data = LineChartData(dataSet: dataSet)
    }

    private func setupUI() {
        dragEnabled = false
        scaleYEnabled = false 
        scaleXEnabled = false
        doubleTapToZoomEnabled = false
        dragDecelerationEnabled = false 
    }
}

In my project, my viewController has called deinit, but MyLineView not called deinit when called MyLineView.setData()

Charts Environment

**Charts version/Branch/Commit Number:3.2.1
**Xcode version:10.1
**Swift version:4.2
**Platform(s) running Charts:iOS
**macOS version running Xcode:macOS Mojave 10.14.2

[liuxuan30]

you have to let Xcode or instruments point out which one is not being released.
a classic mistake is you use a wrong valueFormatter delegate to cause a retain cycle.
Reopen when you have more details.

[liufannnn]

Add myLineView.renderer = nil in my viewController deinit, It solved the problem.