Fixed: Pie Chart percentage does not display on demo project

[leson1106]

Issue Link 🔗

I didn't see any issues relevant to this. However, it's happening on both Swift and Objective-c targets in the demo project. The Pie Chart percentage doesn't show up even DefaultValueFormatter was set.

Goals Soccer ⚽

Make Pie Chart percentage show up.

Implementation Details 🚧

Move NumberFormatter constructor and setValueFormatter(formatter:) function below chartView.data = data. I saw on the didSet implementation of ChartData, that each data in ChartData will be re-assigned to defaultValueFormatter if the valueFormatter of each data is a DefaultValueFormatter subtype. So, no matter what formatter is set, it will be replaced.

Testing Details 🔍

I've tested on both Swift and Objective-c targets. It works as expected.