App Crash: could not cast to 'Charts.PieChartData': in 2.3.0 when upgrading to XCode 8.0

[LiftEd-Admin]

Seems related to closed issue #410 (#410) but not fixed by d6cb47e

Error in console:

Could not cast value of type 'Charts.ChartData' (0x100e0e838) to 'Charts.PieChartData' (0x100e183e0).

Crash on line 182 of PieChartView.swift: private func calcAngles():
let yValueSum = (_data as! PieChartData).yValueSum

Error occurs on updated Charts CocoaPod to 2.3.0 and swift 2.3 when upgrading primarily Objective-C codebase from XCode 7 to XCode 8

Objective-C Code triggering this issue:

double resultForPercentage = somevalue;
ChartDataEntry *entry1 = [[ChartDataEntry alloc] initWithValue:resultForPercentage xIndex:0];
ChartDataEntry *entry2 = [[ChartDataEntry alloc] initWithValue:(100.0f - resultForPercentage) xIndex:1];
PieChartDataSet *set1 = [[PieChartDataSet alloc] initWithYVals:@[entry1,entry2]];

goalCell.graphView.data = [[ChartData alloc] initWithXVals:@[@"",@""] dataSets:@[set1]];

which then eventually calls: PieChartView.swift: private func calcAngles():
let yValueSum = (_data as! PieChartData).yValueSum

[pmairoldi]

You need to use PieChartData as the class instead of ChartsData so:

goalCell.graphView.data = [[PieChartData alloc] initWithXVals:@[@"",@""] dataSets:@[set1]];

[LiftEd-Admin]

Confirmed that petester42's suggestion worked.

FYI: The code above worked fine in Charts 2.1.6, it was updating to XCode 8 + Swift 2.3 + Charts 2.3.0 that triggered this error. Glad it was a simple fix, thanks again!