How to use a double value from an api in Flutter?

Question

I feel kinda dumb asking this. Because I was able to parse Maps and Lists from the api but I have no idea how to use something as simple as a double from the same api.

I simply want to make a

double yld;

from this api link,

https://sandbox.iexapis.com/stable/data-points/market/DGS10?token=Tsk_38ddda0b877a4510b42a37ae713cdc96

JideGuru · Accepted Answer · 2020-07-01 19:27:50Z

1

The response body is a String so you'll have to parse it into a double using double.parse()

getYld() async {
  var url = 'https://sandbox.iexapis.com/stable/data-points/market/DGS10? 
  token=Tsk_38ddda0b877a4510b42a37ae713cdc96';
  var res = await http.get(url);
  if (res.statusCode == 200) {
     double yld = double.parse(res.body);  // parse the double here
  }
}

edited Jul 1, 2020 at 19:27

answered Jul 1, 2020 at 17:45

JideGuru

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2 Comments

romajc Over a year ago

Thank you. I get an error "The await expression can only be used in an async function". I am guess your put this inside a Future<double> >

JideGuru Over a year ago

You have to create an async function for this. i updated the code

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