I have a question BarChart

[shenyufei]

As shown, the BarChart why I have the background color?

[liuxuan30]

I tried with ChartsDemo, not reproducing. Can you double check with ChartsDemo?
I put below code in stacked bar chart view controller
- (void)setDataCount:(int)count range:(double)range() func:

    else
    {
        set1 = [[BarChartDataSet alloc] initWithYVals:yVals label:@"Statistics Vienna 2014"];
//        set1.colors = @[[UIColor redColor]]; <--- both are fine, but you should use colors for stacked bar chart
        [set1 setColor:[UIColor redColor]];
        set1.stackLabels = @[@"Births", @"Divorces", @"Marriages"];
...

BTW, I tried color and colors, both are fine, but you should use colors for stacked bar chart

[shenyufei]

Not the case, this is BarChart, not Stacked bar, you take a closer look at my code is barchardataEntry (value), not values, but why he had the appearance of stacked bar? I have seen ChartsDemo, this is CombinedChart. @liuxuan30
And, even if I was stacked bar, but I only add a number, so it should not be two bar, but now he is so, so I ask the question

[liuxuan30]

well.. I don't know what have you changed, but one simple fact is that ChartsDemo is fine. I am not using ChartsDemo as an excuse, but it's much more efficient you can try it and compare with your code.

You could try add some breakpoint in bar chart renderer to see how it renders your bars. first make sure the bar rect is correct, second make sure the color is right. I doubt if you changed anything like background color etc in your code

[shenyufei]

I checked for a long time, but still did not check out what is wrong, I did not set anything else, I again wrote a Demo, but still, as the code is very simple, I do not see where the wrong, why is it so?

`

func setchart()  {
    let data = CombinedChartData(xVals: month)
    data.lineData = returnLine()
    data.barData = returnBar()
    comboChart.data = data

}

func returnLine() -> LineChartData {
    let d = LineChartData()
    var entries = [ChartDataEntry]()
    for i in 0...month.count - 1{
        let val1 = ((Double)(arc4random_uniform(UInt32(35))) + 100)
        entries.append(ChartDataEntry(value: val1, xIndex: i))
    }

    let set = LineChartDataSet(yVals: entries, label: "LineDataSet")
    set.setColor(UIColor.greenColor())
    set.lineWidth = 2.5
    set.axisDependency = .Right
    d.addDataSet(set)
    return d
}

func returnBar() -> BarChartData {
    let d = BarChartData()
    var entries = [BarChartDataEntry]()
    for i in 0...month.count - 1{
        let val1 = ((Double)(arc4random_uniform(UInt32(35))) + 100)
        entries.append(BarChartDataEntry(value: val1, xIndex: i))
    }
    let set = BarChartDataSet(yVals: entries, label: "BarDataSet")
    set.setColor(UIColor.blueColor())
    set.axisDependency = .Left
    d.addDataSet(set)
    return d
}

`

@liuxuan30

[liuxuan30]

I believe you turned on drawBarShadowEnabled. It's true by default for combined chart.

[liuxuan30]

I am filing a PR for the default value