flutter http package

 first install package 

 

    http: ^1.2.1

create a new file http.dart

import 'package:flutter/material.dart';

import 'dart:convert'; // convert json to String

import 'package:http/http.dart' as http; // http is use

class HttpFlutter extends StatefulWidget {

  const HttpFlutter({super.key});

  @override

  State<HttpFlutter> createState() => _HttpFlutterState();

}

class _HttpFlutterState extends State<HttpFlutter> {

  dynamic data; // main data store every thing

  Future getData() async {

    var res =

        await http.get(Uri.parse('https://aponali.github.io/api/allapon.json')); // apiUrl

    setState(() {

      var decode = json.decode(res.body); // decode json

      data = decode;

      // print(data);

    });

  }

  @override

  void initState() {

    super.initState();

    getData(); // it's important other wise it data not show screen

  }

  @override

  Widget build(BuildContext context) {

    return Scaffold(

      body: ListView.builder(

        itemCount: data == null ? 0 : data.length, // length the list and data if null show 0

        itemBuilder: (context, index) {

          return Text(data[index]["allappname"]);

        },

      ),

    );

  }

}