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iOS

Posted by Hamza Ansari
Hamza Ansari
30 Points

Using Swift to set values for XYPieChart

I need to set different values for my XYPieChart using Swift, but the entire XYPieChart.h file is written in Objective-C. I need to set values for number of slices, values for each slice, colors and text for each slice but I don't believe I know how to call them and set values for them correctly. I want my pie chart to display results for a poll. I've already created the IBOutlets for displaying the polls, but I'm not sure how to call these functions to set values for each of them:

@class XYPieChart;
@protocol XYPieChartDataSource <NSObject>
@required
- (NSUInteger)numberOfSlicesInPieChart:(XYPieChart    *)pieChart;
- (CGFloat)pieChart:(XYPieChart *)pieChart    valueForSliceAtIndex:(NSUInteger)index;
@optional
- (UIColor *)pieChart:(XYPieChart *)pieChart     colorForSliceAtIndex:(NSUInteger)index;
- (NSString *)pieChart:(XYPieChart *)pieChart   textForSliceAtIndex:(NSUInteger)index;
@end

So far, this is all I could figure out:

 @IBOutlet var chartDisplay1: [UIImageView]!
 func pieChart(pieChart:XYPieChart!,index:Int!) ->CGFloat
    {
        let value:NSNumber = self.values[index] as NSNumber
        return value.doubleValue
    }

The values I'm trying to set for each slice in this particular graph are my variables called votes and votes2. For this poll, those are the only two slices the pie chart needs. How do I set the different variables for numberOfSlicesInPieChart and valueForSliceAtIndex, and the rest?