PieChartView settings color is Invalid

[AflyingApple]

1. What did you do?
   I want to change the color of the text individually and distinguish percentages of colors and text colors.

2. What did you expect to happen?

Can not set the text color alone, invalid

Like this（DEMO）：
#import "PieChartViewController.h"
PieChartViewController

_chartView.entryLabelColor = UIColor.blackColor;
_chartView.entryLabelFont = [UIFont fontWithName:@"HelveticaNeue-Light" size:12.f];


[data setValueFont:[UIFont fontWithName:@"HelveticaNeue-Light" size:11.f]];
[data setValueTextColor:UIColor.whiteColor];

3. Charts Environment

**Charts version Number:3.2.0
**Xcode version:10.0
**Swift version:4.2
**Platform(s) running Charts:iOS
**macOS version running Xcode:10.14

[liuxuan30]

                        {
                            ChartUtils.drawText(
                                context: context,
                                text: pe!.label!,
                                point: CGPoint(x: labelPoint.x, y: labelPoint.y + lineHeight),
                                align: align,
                                attributes: [
                                    NSAttributedString.Key.font: entryLabelFont ?? valueFont,
                                    NSAttributedString.Key.foregroundColor: entryLabelColor ?? valueTextColor]

you shouldn't set two color at the same time.