Remove https: from Api response flutter

Question

/*
// To parse this JSON data, do
//
//     final hisselist = hisselistFromJson(jsonString);

import 'dart:convert';

Hisselist hisselistFromJson(String str) => Hisselist.fromJson(json.decode(str));

String hisselistToJson(Hisselist data) => json.encode(data.toJson());

class Hisselist {
  Hisselist({
    required this.success,
    required this.result,
  });

  bool success;
  List<ResultClass> result;

  factory Hisselist.fromJson(Map<String, dynamic> json) => Hisselist(
    success: json["success"], result: json["result"].map<ResultClass>((x) => ResultClass.fromJson(x)).toList(),
  );

  Map<String, dynamic> toJson() => {
    "success": success,
    "result": result.map((x) => x.toJson()),
  };
}

class ResultClass {
  ResultClass({
    required this.rate,
    required this.lastprice,
    required this.lastpricestr,
    required this.hacim,
    required this.hacimstr,
    required this.text,
    required this.code,
  });

  double rate;
  double lastprice;
  String lastpricestr;
  double hacim;
  String hacimstr;
  String text;
  String code;

  factory ResultClass.fromJson(Map<String, dynamic> json) => ResultClass(
    rate: double.tryParse(json["rate"].toString()) ?? 0.0,
    lastprice: double.tryParse(json["lastprice"].toString()) ?? 0.0,
    lastpricestr: json["lastpricestr"],
    hacim: double.tryParse(json["hacim"].toString()) ?? 0.0,
    hacimstr: json["hacimstr"],
    text: json["text"],
    code: json["code"],
  );

  Map<String, dynamic> toJson() => {
    "rate": rate,
    "lastprice": lastprice,
    "lastpricestr": lastpricestr,
    "hacim": hacim,
    "hacimstr": hacimstr,
    "text": text,
    "code": code,
  };
}


 */

// To parse this JSON data, do
//
//     final hisselist = hisselistFromJson(jsonString);

import 'dart:convert';

Hisselist hisselistFromJson(String str) => Hisselist.fromJson(json.decode(str));

String hisselistToJson(Hisselist data) => json.encode(data.toJson());

class Hisselist {
  Hisselist({
    required this.success,
    required this.result,
  });

  bool success;
  List<Result> result;

  factory Hisselist.fromJson(Map<String, dynamic> json) => Hisselist(
    success: json["success"],
    result: List<Result>.from(json["result"].map((x) => Result.fromJson(x))),
  );

  Map<String, dynamic> toJson() => {
    "success": success,
    "result": List<dynamic>.from(result.map((x) => x.toJson())),
  };
}

class Result {
  Result({
    this.rate,
    this.lastprice,
    this.lastpricestr,
    this.hacim,
    this.hacimstr,
    this.min,
    this.minstr,
    this.max,
    this.maxstr,
    this.time,
    this.text,
    this.code,
  });

  double? rate;
  double? lastprice;
  String? lastpricestr;
  String? hacim;
  String? hacimstr;
  dynamic min;
  String? minstr;
  dynamic max;
  String? maxstr;
  Time? time;
  String? text;
  String? code;

  factory Result.fromJson(Map<String, dynamic> json) => Result(
    rate: json["rate"].toDouble(),
    lastprice: json["lastprice"].toDouble(),
    lastpricestr: json["lastpricestr"],
    hacim: json["hacim"],
    hacimstr: json["hacimstr"],
    min: json["min"],
    minstr: json["minstr"],
    max: json["max"],
    maxstr: json["maxstr"],
    time: timeValues.map[json["time"]],
    text: json["text"],
    code: json["code"],
  );

  Map<String, dynamic> toJson() => {
    "rate": rate,
    "lastprice": lastprice,
    "lastpricestr": lastpricestr,
    "hacim": hacim,
    "hacimstr": hacimstr,
    "min": min,
    "minstr": minstr,
    "max": max,
    "maxstr": maxstr,
    "time": timeValues.reverse[time],
    "text": text,
    "code": code,
  };
}

enum Time { THE_1809, THE_1808, THE_1805, THE_1810, THE_1759, THE_1755 }

final timeValues = EnumValues({
  "17:55": Time.THE_1755,
  "17:59": Time.THE_1759,
  "18:05": Time.THE_1805,
  "18:08": Time.THE_1808,
  "18:09": Time.THE_1809,
  "18:10": Time.THE_1810
});

class EnumValues<T> {
  Map<String, T> map;
  Map<T, String>? reverseMap;

  EnumValues(this.map);

  Map<T, String> get reverse {
    if (reverseMap == null) {
      reverseMap = map.map((k, v) => new MapEntry(v, k));
    }
    return reverseMap!;
  }
}

And this is where i call api :

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import '../models/apis/hisselist.dart';




class Hisseler extends StatefulWidget {
  const Hisseler({Key? key}) : super(key: key);

  @override
  State<Hisseler> createState() => _HisselerState();
}

class _HisselerState extends State<Hisseler> {

  final scaffoldKey = GlobalKey<ScaffoldState>();
  final url = Uri.parse('https://api.collectapi.com/economy/hisseSenedi');
  var counter;

  Hisselist? hisseResult;

  Future callHisse() async {
    try{
      Map<String, String> requestHeaders = {
        'Content-Type': 'application/json',
        'Authorization': 'apikey 4xxxxP'
      };
      final response = await http.get(url,headers:requestHeaders);

      if(response.statusCode == 200){
        var result = hisselistFromJson(response.body);

        if(mounted);
        setState(() {

          counter = result.result.length;
          result.result.sort((a, b) => (a.text ?? "").compareTo(b.text ?? ""));

          hisseResult = result;
        });
        return result;
      } else {
        print(response.statusCode);
      }
    } catch(e) {
      print(e.toString());
    }
  }
  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    callHisse();
  }

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        centerTitle: false,
        automaticallyImplyLeading: false,
        title: Text(
            'Hisseler'
        ),
      ),
      body: Center(
        child: Padding(
          padding: const EdgeInsets.all(8.0),
          child: counter != null ?

          ListView.separated(

              itemCount: counter,

              separatorBuilder: (context, index) {
                return Divider(color: Colors.grey[400]);
              },
              itemBuilder: (context, index){
                return Card(
                  child: ListTile(
                    contentPadding: EdgeInsets.all(10),
                    title: Column(
                      crossAxisAlignment: CrossAxisAlignment.start,
                      children: <Widget>[
                        Text(hisseResult?.result[index].code??"", style: TextStyle(color: Colors.black, fontSize: 16, fontWeight: FontWeight.w500)),
                        Text(hisseResult?.result[index].text??"",style: TextStyle(color: Colors.grey[500], fontSize: 14))
                      ],
                    ),
                    trailing: Column(
                      children: <Widget>[
                        Text(hisseResult?.result[index].lastpricestr??"", style: TextStyle(color: Colors.black, fontSize: 16, fontWeight: FontWeight.w500)),
                        Container(
                            alignment: Alignment.center,
                            decoration: BoxDecoration(
                                borderRadius: BorderRadius.circular(5),
                                color: Colors.red
                            ),
                            width: 75,
                            height: 25,
                            child: Text(hisseResult?.result[index].rate.toString()??"",style: TextStyle(color: Colors.white))
                        )
                      ],
                    ),
                ),);
              }) : Center(child: CircularProgressIndicator(

          )),
        ),
      ),
    );
  }
}

This is the result i get:

as you see here, code response start with "https:" i don't want to show this "https:" part from response. How i can fix this? Thanks for your help

You can try to use: api.flutter.dev/flutter/dart-core/String/replaceAll.html — MendelG
– MendelG, Commented Aug 22, 2022 at 0:25
@MendelG I can also use substring but I couldn't manage to do it. Can you show me a code example, please? — Mıktad Tahir Durak
– Mıktad Tahir Durak, Commented Aug 22, 2022 at 0:28
What line of your code is responsible for printing the "https"? — MendelG
– MendelG, Commented Aug 22, 2022 at 0:32

Allan Mitre · Accepted Answer · 2022-08-22 00:32:11Z

1

seems the "https:" comes emberded in your API data, therefore we need to replace that string from the variable code.

Replace the Text code with this:

Text((hisseResult?.result[index].code ?? "")
                    .replaceAll("https:", ""),
                style: TextStyle(
                    color: Colors.black,
                    fontSize: 16,
                    fontWeight: FontWeight.w500))

answered Aug 22, 2022 at 0:32

Allan Mitre

3211 silver badge3 bronze badges

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2 Comments

Mıktad Tahir Durak Over a year ago

Can you explain me please why hisseResult?.result[index].code??"".substring(6) is not working?

Allan Mitre Over a year ago

.substring(index) depends on the length of your string, if your string is less than the index, then you get an error. To use it you need to chech the length of the string first, then get the subtring. It is easier to just replace the string you dont want, because it works if it exists or not.

Tomislav Juroš · Accepted Answer · 2022-08-22 00:39:42Z

0

Try this:

hisseResult?.result[index].code?.substring(5)

null safety fix also added

subString changed into substring

edited Aug 22, 2022 at 0:39

Tomislav Juroš

3782 silver badges8 bronze badges

answered Aug 22, 2022 at 0:25

MarcoFerreira

3982 silver badges15 bronze badges

2 Comments

Mıktad Tahir Durak Over a year ago

to use substring we must check the length of the string first, that's why substring not working here. Check the answer of Allan Mitre. If you add a check to the length of the string to this answer, it will be also a correct answer. But using replace is more logical it seems

Tomislav Juroš Over a year ago

If you add ? before substring, there is no error and it works

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