flutternetworkservicehandler 0.0.2

This project is easy to deal with network calls as it contains all request methods i.e get,post etc. This Pacakge use http package for network handling.

Introduction

1. First goto your pubspec.yaml file and add dependency:

   flutternetworkservicehandler:
   

2. run flutter pub get to update the packages dependencies.

3. In your code, you can use it like this: first import the package:

import 'package:flutternetworkservicehandler/HttpNetworkService.dart';

Code Usage

then use it like this in your code:

import 'package:flutter/material.dart';
import 'package:flutternetworkservicehandler/src/http_exception.dart';
import 'package:flutternetworkservicehandler/src/http_network_service.dart';

void main() {
runApp(MyApp());
}

class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
  return MaterialApp(
    title: 'Flutter Demo',
    theme: ThemeData(
      primarySwatch: Colors.blue,
      visualDensity: VisualDensity.adaptivePlatformDensity,
    ),
    home: MyHomePage(),
  );
}
}

class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
List _usersList = [];

var errorMessage = 'Can\'t proceed request';

void _showErrorDialog(String message) {
  showDialog(
    context: context,
    builder: (ctx) => AlertDialog(
      title: Text('Error Occured'),
      content: Text(message),
      actions: <Widget>[
        FlatButton(
          onPressed: () {
            Navigator.of(ctx).pop();
          },
          child: Text('OK!'),
        )
      ],
    ),
  );
}

Future getUsersData() async {
  try {
    final responseUsersList = await HttpNetworkService.getRequest(
        url: 'https://jsonplaceholder.typicode.com/userss',
        headers: {
          'Content-Type': 'application/x-www-form-urlencoded',
        });
    for (var items in responseUsersList) {
      print(items);
      _usersList.add({
        'id': items['id'],
        'username': items['username'],
        'website': items['website'],
      });
    }
  } on HttpException catch (error) {
    if (error.toString().contains('Redirection error')) {
      errorMessage = 'The resource requested has been temporarily moved.';
    } else if (error.toString().contains('Bad Request Format')) {
      errorMessage = 'Your client has issued a malformed or illegal request.';
    } else if (error.toString().contains('Internal Server Error')) {
      errorMessage =
          'The server encountered an error and could not complete your request.';
    }
    _showErrorDialog(errorMessage);
  } catch (e) {
    print(e.toString());
  }
}

@override
Widget build(BuildContext context) {
  return Scaffold(
    body: FutureBuilder(
      future: getUsersData(),
      builder: (ctx, snapshot) =>
          snapshot.connectionState == ConnectionState.waiting
              ? Center(
                  child: CircularProgressIndicator(),
                )
              : snapshot.data == null
                  ? Center(
                      child: Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        children: [
                          Icon(
                            Icons.error,
                            size: 75,
                            color: Colors.red,
                          ),
                          Padding(
                            padding: const EdgeInsets.all(8.0),
                            child: Text(
                              errorMessage.toUpperCase(),
                              textAlign: TextAlign.center,
                              style: TextStyle(
                                fontSize: 16.0,
                                fontWeight: FontWeight.w700,
                              ),
                            ),
                          ),
                        ],
                      ),
                    )
                  : ListView.builder(
                      itemCount: _usersList.length,
                      itemBuilder: (ctx, i) => ListTile(
                        title: Text(_usersList[i]['username']),
                        subtitle: Text(_usersList[i]['website']),
                        leading: CircleAvatar(
                          child: FittedBox(
                            child: Text(
                              _usersList[i]['id'].toString(),
                            ),
                          ),
                        ),
                        trailing: Icon(
                          Icons.arrow_forward_ios,
                        ),
                      ),
                    ),
    ),
  );
}
}

SUPPORT

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