Flutter how to change color depending status from JSON API

Issue

I want to change dynamically box color depending status in a JSON API.
For example, Approved = Colors.green, Rejected = Colors.red, Submitted = Colors.blue.

this is the image of my current app
i underline the status

how can achieve it?

this is how i get the API:

Future getCalendar() async{
  List<Events> list;

    String api = "http://200.0.0.104/api/dynamic/uspGetCalendarEvents_mobile?EmployeeId=5";
    var res = await http.get(Uri.encodeFull(api), headers: {"Accept": "application/json"});

        var data = json.decode(res.body);
        var rest = data["data"] as List;
        list = rest.map<Events>((json) => Events.fromJson(json)).toList();

    return list;
  }

this is how i loop the data :

getCalendar().then((data){

          for (var a =0; a <  data.length; a++ )
          {
             _events.addAll({DateTime.parse(data[a].start.toString().replaceAll("-", "")) :  data[a].title.toString().split(",")  });
          }
    });

this is my widget :

 Widget _buildEventList() {
    return ListView(
      children: _selectedEvents
          .map((event) => Container(
                decoration: BoxDecoration(
                  color: Colors.blue, // i want to change the color
                  border: Border.all(width: 0.8),
                  borderRadius: BorderRadius.circular(12.0),
                ),
                margin: const EdgeInsets.symmetric(horizontal: 8.0, vertical: 4.0),
                child: ListTile(
                  title: Text(event.toString()),
                  onTap: () => print('$event tapped!'),
                ),
              ))
          .toList(),
    );
  }

Solution

You can create a method to return the Color according the condition (assuming event.toString() = Rejected , Approved or Submitted):

Color _getColorByEvent(String event) {
  if (event == "Approved") return Colors.green;
  if (event == "Rejected") return Colors.red;
  return Colors.blue;
}

...

BoxDecoration(
                color: _getColorByEvent(event.toString()), // i want to change the color
                border: Border.all(width: 0.8),
                borderRadius: BorderRadius.circular(12.0),
              ),

Answered By – diegoveloper

Answer Checked By – Senaida (FlutterFixes Volunteer)