Flutter - JSON and Time Series Charts

Question

I am trying to display some data in a time-series chart, I found an example \"https://google.github.io/charts/flutter/example/time_series_charts/simple.html\" but the data i

Answer 1

The first thing to do is to refactor TimeSeriesSales so that it makes sense in your application, for example:

class TimeSeriesPrice {
  final DateTime time;
  final double price;
  TimeSeriesSales(this.time, this.price);
}

Next, you need to build data.

List data = [];
// populate data with a list of dates and prices from the json
for (Map m in dataJSON) {
  data.add(TimeSeriesPrice(m['date'], m['price']);
}
var series = ... 

You don't give an example of the json format, so this is a guess. (You are likely to have to parse the json string date into a Dart DateTime.)