Label drawing glitch when changing data

[mecid]

I have chart label glitches when changing chart data via calendar in the top.

`
self.summaryChart.data = BarChartData(xVals: xVals, dataSet: dataset)

self.summaryChartHeight.constant = CGFloat(xVals.count * 40)

self.delay(300) { self.summaryChart.notifyDataSetChanged() }
`

[liuxuan30]

hmm, there are labels overlap. Is this stacked bar or anything? Need step to reproduce, using ChartsDemo is even better.

[mecid]

@liuxuan30 This is not stacked bar. This is chart configuration code.
`
summaryChart.userInteractionEnabled = false
summaryChart.legend.enabled = false
summaryChart.descriptionText = ""

        summaryChart.xAxis.labelFont = UIFont.preferredFontForTextStyle(UIFontTextStyleBody)
        summaryChart.xAxis.labelTextColor = UIColor.flatWhiteColor()
        summaryChart.xAxis.labelPosition = .Bottom

        summaryChart.leftAxis.enabled = false
        summaryChart.rightAxis.enabled = false

        summaryChart.xAxis.drawAxisLineEnabled = false
        summaryChart.xAxis.drawGridLinesEnabled = false

        summaryChart.leftAxis.spaceTop = CGFloat(0.3)

`

And this is dataset creating code:

`
let dataset = BarChartDataSet()
dataset.valueFont = UIFont.preferredFontForTextStyle(UIFontTextStyleCaption1)
dataset.valueTextColor = UIColor.flatWhiteColor()
dataset.resetColors()

        let percentNumberFormatter = NSNumberFormatter()
        percentNumberFormatter.numberStyle = NSNumberFormatterStyle.PercentStyle
        dataset.valueFormatter = percentNumberFormatter

        let sum = samples.count
        var xVals: [String] = []
        var index = 0

        for (status, count) in self.groupHeartRateSamples(samples, activity: .Regular) {
            let value = Double(count) / Double(sum)
            dataset.addEntry(BarChartDataEntry(value: value, xIndex: index))
            dataset.addColor(status.color())
            xVals.append(status.description)
            index = index + 1
        }

`

[mecid]

Problem appear only with clear color background for chart.