no match color bar chart with label

[osj8876]

hello

I draw the bar chart with label.

But bar charts of all is a blue.

Each represented a different color.

It is a bug?

Below the code :

    var yVals = [BarChartDataEntry]()
    
    let dataFormatter = DateFormatter()
    dataFormatter.locale = Locale(identifier: "en_US")
    dataFormatter.dateStyle = .medium
    dataFormatter.dateFormat = "MMM dd"
    
    for i in 0..<data.count - 1 {
        let readData = data[i][1]
        yVals.append(BarChartDataEntry(x: Double(i), y: Double(readData)!))
    }
    
    let todayTime = dataFormatter.date(from: data[data.count-1][0])
    let tommorrowTime = dataFormatter.date(from: data[data.count-1][1])
    let dayAfterTommorrowtodayTime = dataFormatter.date(from: data[data.count-1][2])
    
    dataFormatter.dateFormat = "yyyy-MM-dd"
    
    var convertTime = dataFormatter.string(from: todayTime!)
    
    let dataSetToday = BarChartDataSet(values: yVals, label: convertTime)
    dataSetToday.colors = [UIColor.lightGray]
    
    for i in 0..<data.count - 1 {
        let readData = data[i][2]
        yVals.append(BarChartDataEntry(x: Double(i+9), y: Double(readData)!))
    }
        
    convertTime = dataFormatter.string(from: tommorrowTime!)
        
    let dataSetT​ommorrow = BarChartDataSet(values: yVals, label: convertTime)
    dataSetT​ommorrow.colors = [UIColor.red]
        
    for i in 0..<data.count - 1 {
        let readData = data[i][3]
        yVals.append(BarChartDataEntry(x: Double(i+18), y: Double(readData)!))
    }
        
    convertTime = dataFormatter.string(from: dayAfterTommorrowtodayTime!)
        
    let dataSetDayAfterTommorrow = BarChartDataSet(values: yVals, label: convertTime)
    dataSetDayAfterTommorrow.colors = [UIColor.blue]
        
    let dataSets: [BarChartDataSet] = [dataSetToday, dataSetT​ommorrow, dataSetDayAfterTommorrow]
    
    self.magneticForcastBarView.fitBars = true
    self.magneticForcastBarView.data = BarChartData(dataSets: dataSets)
    self.magneticForcastBarView.animate(xAxisDuration: 2.0, yAxisDuration: 2.0, easingOption: .easeInBounce)

thank you

[liuxuan30]

dataSetDayAfterTommorrow.colors = [UIColor.blue]
you set it all blue and you ask why..