├── .gitignore ├── .metadata ├── README.md ├── android ├── app │ ├── build.gradle │ └── src │ │ ├── debug │ │ └── AndroidManifest.xml │ │ ├── main │ │ ├── AndroidManifest.xml │ │ ├── kotlin │ │ │ └── com │ │ │ │ └── example │ │ │ │ └── network_handling │ │ │ │ └── MainActivity.kt │ │ └── res │ │ │ ├── drawable │ │ │ └── launch_background.xml │ │ │ ├── mipmap-hdpi │ │ │ └── ic_launcher.png │ │ │ ├── mipmap-mdpi │ │ │ └── ic_launcher.png │ │ │ ├── mipmap-xhdpi │ │ │ └── ic_launcher.png │ │ │ ├── mipmap-xxhdpi │ │ │ └── ic_launcher.png │ │ │ ├── mipmap-xxxhdpi │ │ │ └── ic_launcher.png │ │ │ └── values │ │ │ └── styles.xml │ │ └── profile │ │ └── AndroidManifest.xml ├── build.gradle ├── gradle.properties ├── gradle │ └── wrapper │ │ └── gradle-wrapper.properties └── settings.gradle ├── ios ├── Flutter │ ├── AppFrameworkInfo.plist │ ├── Debug.xcconfig │ └── Release.xcconfig ├── Runner.xcodeproj │ ├── project.pbxproj │ ├── project.xcworkspace │ │ └── contents.xcworkspacedata │ └── xcshareddata │ │ └── xcschemes │ │ └── Runner.xcscheme ├── Runner.xcworkspace │ └── contents.xcworkspacedata └── Runner │ ├── AppDelegate.swift │ ├── Assets.xcassets │ ├── AppIcon.appiconset │ │ ├── Contents.json │ │ ├── Icon-App-1024x1024@1x.png │ │ ├── Icon-App-20x20@1x.png │ │ ├── Icon-App-20x20@2x.png │ │ ├── Icon-App-20x20@3x.png │ │ ├── Icon-App-29x29@1x.png │ │ ├── Icon-App-29x29@2x.png │ │ ├── Icon-App-29x29@3x.png │ │ ├── Icon-App-40x40@1x.png │ │ ├── Icon-App-40x40@2x.png │ │ ├── Icon-App-40x40@3x.png │ │ ├── Icon-App-60x60@2x.png │ │ ├── Icon-App-60x60@3x.png │ │ ├── Icon-App-76x76@1x.png │ │ ├── Icon-App-76x76@2x.png │ │ └── Icon-App-83.5x83.5@2x.png │ └── LaunchImage.imageset │ │ ├── Contents.json │ │ ├── LaunchImage.png │ │ ├── LaunchImage@2x.png │ │ ├── LaunchImage@3x.png │ │ └── README.md │ ├── Base.lproj │ ├── LaunchScreen.storyboard │ └── Main.storyboard │ ├── Info.plist │ └── Runner-Bridging-Header.h ├── lib ├── api_base_helper.dart ├── api_response.dart ├── app_exceptions.dart ├── main.dart ├── movie_bloc.dart ├── movie_repository.dart └── movie_response.dart ├── pubspec.yaml └── test └── widget_test.dart /.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.lock 4 | *.log 5 | *.pyc 6 | *.swp 7 | .DS_Store 8 | .atom/ 9 | .buildlog/ 10 | .history 11 | .svn/ 12 | 13 | # IntelliJ related 14 | *.iml 15 | *.ipr 16 | *.iws 17 | .idea/ 18 | 19 | # Visual Studio Code related 20 | .vscode/ 21 | 22 | # Flutter/Dart/Pub related 23 | **/doc/api/ 24 | .dart_tool/ 25 | .flutter-plugins 26 | .packages 27 | .pub-cache/ 28 | .pub/ 29 | build/ 30 | 31 | # Android related 32 | **/android/**/gradle-wrapper.jar 33 | **/android/.gradle 34 | **/android/captures/ 35 | **/android/gradlew 36 | **/android/gradlew.bat 37 | **/android/local.properties 38 | **/android/**/GeneratedPluginRegistrant.java 39 | 40 | # iOS/XCode related 41 | **/ios/**/*.mode1v3 42 | **/ios/**/*.mode2v3 43 | **/ios/**/*.moved-aside 44 | **/ios/**/*.pbxuser 45 | **/ios/**/*.perspectivev3 46 | **/ios/**/*sync/ 47 | **/ios/**/.sconsign.dblite 48 | **/ios/**/.tags* 49 | **/ios/**/.vagrant/ 50 | **/ios/**/DerivedData/ 51 | **/ios/**/Icon? 52 | **/ios/**/Pods/ 53 | **/ios/**/.symlinks/ 54 | **/ios/**/profile 55 | **/ios/**/xcuserdata 56 | **/ios/.generated/ 57 | **/ios/Flutter/App.framework 58 | **/ios/Flutter/Flutter.framework 59 | **/ios/Flutter/Generated.xcconfig 60 | **/ios/Flutter/app.flx 61 | **/ios/Flutter/app.zip 62 | **/ios/Flutter/flutter_assets/ 63 | **/ios/ServiceDefinitions.json 64 | **/ios/Runner/GeneratedPluginRegistrant.* 65 | 66 | # Exceptions to above rules. 67 | !**/ios/**/default.mode1v3 68 | !**/ios/**/default.mode2v3 69 | !**/ios/**/default.pbxuser 70 | !**/ios/**/default.perspectivev3 71 | !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages -------------------------------------------------------------------------------- /.metadata: -------------------------------------------------------------------------------- 1 | # This file tracks properties of this Flutter project. 2 | # Used by Flutter tool to assess capabilities and perform upgrades etc. 3 | # 4 | # This file should be version controlled and should not be manually edited. 5 | 6 | version: 7 | revision: 7a4c33425ddd78c54aba07d86f3f9a4a0051769b 8 | channel: stable 9 | 10 | project_type: app 11 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Network Handling [![FlutterWeekly](https://img.shields.io/badge/Flutter%20Weekly-%2366-green.svg)](https://mailchi.mp/flutterweekly/flutter-weekly-66) 2 | 3 | A Flutter project to show network error handling 4 | 5 | Asset 6 | 7 | ## Getting Started 8 | 9 | This project is a starting point for a Flutter application. 10 | 11 | A few resources to get you started if this is your first Flutter project: 12 | 13 | - [Lab: Write your first Flutter app](https://flutter.dev/docs/get-started/codelab) 14 | - [Cookbook: Useful Flutter samples](https://flutter.dev/docs/cookbook) 15 | 16 | For help getting started with Flutter, view our 17 | [online documentation](https://flutter.dev/docs), which offers tutorials, 18 | samples, guidance on mobile development, and a full API reference. 19 | -------------------------------------------------------------------------------- /android/app/build.gradle: -------------------------------------------------------------------------------- 1 | def localProperties = new Properties() 2 | def localPropertiesFile = rootProject.file('local.properties') 3 | if (localPropertiesFile.exists()) { 4 | localPropertiesFile.withReader('UTF-8') { reader -> 5 | localProperties.load(reader) 6 | } 7 | } 8 | 9 | def flutterRoot = localProperties.getProperty('flutter.sdk') 10 | if (flutterRoot == null) { 11 | throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.") 12 | } 13 | 14 | def flutterVersionCode = localProperties.getProperty('flutter.versionCode') 15 | if (flutterVersionCode == null) { 16 | flutterVersionCode = '1' 17 | } 18 | 19 | def flutterVersionName = localProperties.getProperty('flutter.versionName') 20 | if (flutterVersionName == null) { 21 | flutterVersionName = '1.0' 22 | } 23 | 24 | apply plugin: 'com.android.application' 25 | apply plugin: 'kotlin-android' 26 | apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" 27 | 28 | android { 29 | compileSdkVersion 28 30 | 31 | sourceSets { 32 | main.java.srcDirs += 'src/main/kotlin' 33 | } 34 | 35 | lintOptions { 36 | disable 'InvalidPackage' 37 | } 38 | 39 | defaultConfig { 40 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 41 | applicationId "com.example.network_handling" 42 | minSdkVersion 16 43 | targetSdkVersion 28 44 | versionCode flutterVersionCode.toInteger() 45 | versionName flutterVersionName 46 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 47 | } 48 | 49 | buildTypes { 50 | release { 51 | // TODO: Add your own signing config for the release build. 52 | // Signing with the debug keys for now, so `flutter run --release` works. 53 | signingConfig signingConfigs.debug 54 | } 55 | } 56 | } 57 | 58 | flutter { 59 | source '../..' 60 | } 61 | 62 | dependencies { 63 | implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" 64 | testImplementation 'junit:junit:4.12' 65 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 66 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 67 | } 68 | -------------------------------------------------------------------------------- /android/app/src/debug/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 4 | 9 | 13 | 20 | 24 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | -------------------------------------------------------------------------------- /android/app/src/main/kotlin/com/example/network_handling/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package com.example.network_handling 2 | 3 | import android.os.Bundle 4 | 5 | import io.flutter.app.FlutterActivity 6 | import io.flutter.plugins.GeneratedPluginRegistrant 7 | 8 | class MainActivity: FlutterActivity() { 9 | override fun onCreate(savedInstanceState: Bundle?) { 10 | super.onCreate(savedInstanceState) 11 | GeneratedPluginRegistrant.registerWith(this) 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /android/app/src/main/res/drawable/launch_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 12 | 13 | -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-hdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xsahil03x/flutter_network_handling/62cf6ee5fb59c7d5ea360075669008e236dc7070/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xsahil03x/flutter_network_handling/62cf6ee5fb59c7d5ea360075669008e236dc7070/android/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xsahil03x/flutter_network_handling/62cf6ee5fb59c7d5ea360075669008e236dc7070/android/app/src/main/res/mipmap-xhdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/xsahil03x/flutter_network_handling/62cf6ee5fb59c7d5ea360075669008e236dc7070/android/app/src/main/res/mipmap-xxhdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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"org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" 11 | } 12 | } 13 | 14 | allprojects { 15 | repositories { 16 | google() 17 | jcenter() 18 | } 19 | } 20 | 21 | rootProject.buildDir = '../build' 22 | subprojects { 23 | project.buildDir = "${rootProject.buildDir}/${project.name}" 24 | } 25 | subprojects { 26 | project.evaluationDependsOn(':app') 27 | } 28 | 29 | task clean(type: Delete) { 30 | delete rootProject.buildDir 31 | } 32 | -------------------------------------------------------------------------------- /android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | -------------------------------------------------------------------------------- /android/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 23 08:50:38 CEST 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip 7 | -------------------------------------------------------------------------------- /android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() 4 | 5 | def plugins = new Properties() 6 | def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') 7 | if (pluginsFile.exists()) { 8 | pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } 9 | } 10 | 11 | plugins.each { name, path -> 12 | def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() 13 | include ":$name" 14 | project(":$name").projectDir = pluginDirectory 15 | } 16 | -------------------------------------------------------------------------------- /ios/Flutter/AppFrameworkInfo.plist: 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| 92 | 93 | 94 | -------------------------------------------------------------------------------- /ios/Runner.xcworkspace/contents.xcworkspacedata: -------------------------------------------------------------------------------- 1 | 2 | 4 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /ios/Runner/AppDelegate.swift: -------------------------------------------------------------------------------- 1 | import UIKit 2 | import Flutter 3 | 4 | @UIApplicationMain 5 | @objc class AppDelegate: FlutterAppDelegate { 6 | override func application( 7 | _ application: UIApplication, 8 | didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]? 9 | ) -> Bool { 10 | GeneratedPluginRegistrant.register(with: self) 11 | return super.application(application, didFinishLaunchingWithOptions: launchOptions) 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json: -------------------------------------------------------------------------------- 1 | { 2 | "images" : [ 3 | { 4 | "size" : "20x20", 5 | "idiom" : "iphone", 6 | "filename" : "Icon-App-20x20@2x.png", 7 | "scale" : "2x" 8 | }, 9 | { 10 | "size" : "20x20", 11 | "idiom" : "iphone", 12 | "filename" : "Icon-App-20x20@3x.png", 13 | "scale" : "3x" 14 | }, 15 | { 16 | "size" : "29x29", 17 | "idiom" : "iphone", 18 | "filename" : "Icon-App-29x29@1x.png", 19 | "scale" : "1x" 20 | }, 21 | { 22 | "size" : "29x29", 23 | "idiom" : "iphone", 24 | "filename" : "Icon-App-29x29@2x.png", 25 | "scale" : "2x" 26 | }, 27 | { 28 | "size" : "29x29", 29 | "idiom" : "iphone", 30 | "filename" : "Icon-App-29x29@3x.png", 31 | "scale" : "3x" 32 | }, 33 | { 34 | "size" : "40x40", 35 | "idiom" : "iphone", 36 | "filename" : "Icon-App-40x40@2x.png", 37 | "scale" : "2x" 38 | }, 39 | { 40 | "size" : "40x40", 41 | "idiom" : "iphone", 42 | "filename" : 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https://raw.githubusercontent.com/xsahil03x/flutter_network_handling/62cf6ee5fb59c7d5ea360075669008e236dc7070/ios/Runner/Assets.xcassets/LaunchImage.imageset/LaunchImage@3x.png -------------------------------------------------------------------------------- /ios/Runner/Assets.xcassets/LaunchImage.imageset/README.md: -------------------------------------------------------------------------------- 1 | # Launch Screen Assets 2 | 3 | You can customize the launch screen with your own desired assets by replacing the image files in this directory. 4 | 5 | You can also do it by opening your Flutter project's Xcode project with `open ios/Runner.xcworkspace`, selecting `Runner/Assets.xcassets` in the Project Navigator and dropping in the desired images. -------------------------------------------------------------------------------- /ios/Runner/Base.lproj/LaunchScreen.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | -------------------------------------------------------------------------------- /ios/Runner/Base.lproj/Main.storyboard: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | -------------------------------------------------------------------------------- /ios/Runner/Info.plist: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | CFBundleDevelopmentRegion 6 | en 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | network_handling 15 | CFBundlePackageType 16 | APPL 17 | CFBundleShortVersionString 18 | $(FLUTTER_BUILD_NAME) 19 | CFBundleSignature 20 | ???? 21 | CFBundleVersion 22 | $(FLUTTER_BUILD_NUMBER) 23 | LSRequiresIPhoneOS 24 | 25 | UILaunchStoryboardName 26 | LaunchScreen 27 | UIMainStoryboardFile 28 | Main 29 | UISupportedInterfaceOrientations 30 | 31 | UIInterfaceOrientationPortrait 32 | UIInterfaceOrientationLandscapeLeft 33 | UIInterfaceOrientationLandscapeRight 34 | 35 | UISupportedInterfaceOrientations~ipad 36 | 37 | UIInterfaceOrientationPortrait 38 | UIInterfaceOrientationPortraitUpsideDown 39 | UIInterfaceOrientationLandscapeLeft 40 | UIInterfaceOrientationLandscapeRight 41 | 42 | UIViewControllerBasedStatusBarAppearance 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /ios/Runner/Runner-Bridging-Header.h: -------------------------------------------------------------------------------- 1 | #import "GeneratedPluginRegistrant.h" -------------------------------------------------------------------------------- /lib/api_base_helper.dart: -------------------------------------------------------------------------------- 1 | import 'dart:io'; 2 | import 'package:http/http.dart' as http; 3 | import 'dart:convert'; 4 | import 'package:network_handling/app_exceptions.dart'; 5 | import 'dart:async'; 6 | 7 | class ApiBaseHelper { 8 | final String _baseUrl = "http://api.themoviedb.org/3/"; 9 | 10 | Future get(String url) async { 11 | print('Api Get, url $url'); 12 | var responseJson; 13 | try { 14 | final response = await http.get(_baseUrl + url); 15 | responseJson = _returnResponse(response); 16 | } on SocketException { 17 | print('No net'); 18 | throw FetchDataException('No Internet connection'); 19 | } 20 | print('api get recieved!'); 21 | return responseJson; 22 | } 23 | 24 | Future post(String url, dynamic body) async { 25 | print('Api Post, url $url'); 26 | var responseJson; 27 | try { 28 | final response = await http.post(_baseUrl + url, body: body); 29 | responseJson = _returnResponse(response); 30 | } on SocketException { 31 | print('No net'); 32 | throw FetchDataException('No Internet connection'); 33 | } 34 | print('api post.'); 35 | return responseJson; 36 | } 37 | 38 | Future put(String url, dynamic body) async { 39 | print('Api Put, url $url'); 40 | var responseJson; 41 | try { 42 | final response = await http.put(_baseUrl + url, body: body); 43 | responseJson = _returnResponse(response); 44 | } on SocketException { 45 | print('No net'); 46 | throw FetchDataException('No Internet connection'); 47 | } 48 | print('api put.'); 49 | print(responseJson.toString()); 50 | return responseJson; 51 | } 52 | 53 | Future delete(String url) async { 54 | print('Api delete, url $url'); 55 | var apiResponse; 56 | try { 57 | final response = await http.delete(_baseUrl + url); 58 | apiResponse = _returnResponse(response); 59 | } on SocketException { 60 | print('No net'); 61 | throw FetchDataException('No Internet connection'); 62 | } 63 | print('api delete.'); 64 | return apiResponse; 65 | } 66 | } 67 | 68 | dynamic _returnResponse(http.Response response) { 69 | switch (response.statusCode) { 70 | case 200: 71 | var responseJson = json.decode(response.body.toString()); 72 | print(responseJson); 73 | return responseJson; 74 | case 400: 75 | throw BadRequestException(response.body.toString()); 76 | case 401: 77 | case 403: 78 | throw UnauthorisedException(response.body.toString()); 79 | case 500: 80 | default: 81 | throw FetchDataException( 82 | 'Error occured while Communication with Server with StatusCode : ${response.statusCode}'); 83 | } 84 | } 85 | -------------------------------------------------------------------------------- /lib/api_response.dart: -------------------------------------------------------------------------------- 1 | class ApiResponse { 2 | Status status; 3 | 4 | T data; 5 | 6 | String message; 7 | 8 | ApiResponse.loading(this.message) : status = Status.LOADING; 9 | 10 | ApiResponse.completed(this.data) : status = Status.COMPLETED; 11 | 12 | ApiResponse.error(this.message) : status = Status.ERROR; 13 | 14 | @override 15 | String toString() { 16 | return "Status : $status \n Message : $message \n Data : $data"; 17 | } 18 | } 19 | 20 | enum Status { LOADING, COMPLETED, ERROR } 21 | -------------------------------------------------------------------------------- /lib/app_exceptions.dart: -------------------------------------------------------------------------------- 1 | class AppException implements Exception { 2 | final _message; 3 | final _prefix; 4 | 5 | AppException([this._message, this._prefix]); 6 | 7 | String toString() { 8 | return "$_prefix$_message"; 9 | } 10 | } 11 | 12 | class FetchDataException extends AppException { 13 | FetchDataException([String message]) 14 | : super(message, "Error During Communication: "); 15 | } 16 | 17 | class BadRequestException extends AppException { 18 | BadRequestException([message]) : super(message, "Invalid Request: "); 19 | } 20 | 21 | class UnauthorisedException extends AppException { 22 | UnauthorisedException([message]) : super(message, "Unauthorised: "); 23 | } 24 | 25 | class InvalidInputException extends AppException { 26 | InvalidInputException([String message]) : super(message, "Invalid Input: "); 27 | } 28 | -------------------------------------------------------------------------------- /lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/cupertino.dart'; 2 | import 'package:flutter/material.dart'; 3 | import 'package:network_handling/api_response.dart'; 4 | import 'package:network_handling/movie_bloc.dart'; 5 | 6 | import 'movie_response.dart'; 7 | 8 | void main() => runApp(MyApp()); 9 | 10 | class MyApp extends StatelessWidget { 11 | // This widget is the root of your application. 12 | @override 13 | Widget build(BuildContext context) { 14 | return MaterialApp( 15 | debugShowCheckedModeBanner: false, 16 | title: 'Network Handling Demo', 17 | home: MovieScreen(), 18 | ); 19 | } 20 | } 21 | 22 | class MovieScreen extends StatefulWidget { 23 | @override 24 | _MovieScreenState createState() => _MovieScreenState(); 25 | } 26 | 27 | class _MovieScreenState extends State { 28 | MovieBloc _bloc; 29 | 30 | @override 31 | void initState() { 32 | super.initState(); 33 | _bloc = MovieBloc(); 34 | } 35 | 36 | @override 37 | Widget build(BuildContext context) { 38 | return Scaffold( 39 | appBar: AppBar( 40 | elevation: 0.0, 41 | title: Text('Movie Mania', 42 | style: TextStyle(color: Colors.lightGreen, fontSize: 28)), 43 | backgroundColor: Colors.black54, 44 | ), 45 | backgroundColor: Colors.black54, 46 | body: RefreshIndicator( 47 | onRefresh: () => _bloc.fetchMovieList(), 48 | child: StreamBuilder>>( 49 | stream: _bloc.movieListStream, 50 | builder: (context, snapshot) { 51 | if (snapshot.hasData) { 52 | switch (snapshot.data.status) { 53 | case Status.LOADING: 54 | return Loading(loadingMessage: snapshot.data.message); 55 | break; 56 | case Status.COMPLETED: 57 | return MovieList(movieList: snapshot.data.data); 58 | break; 59 | case Status.ERROR: 60 | return Error( 61 | errorMessage: snapshot.data.message, 62 | onRetryPressed: () => _bloc.fetchMovieList(), 63 | ); 64 | break; 65 | } 66 | } 67 | return Container(); 68 | }, 69 | ), 70 | ), 71 | ); 72 | } 73 | 74 | @override 75 | void dispose() { 76 | _bloc.dispose(); 77 | super.dispose(); 78 | } 79 | } 80 | 81 | class MovieList extends StatelessWidget { 82 | final List movieList; 83 | 84 | const MovieList({Key key, this.movieList}) : super(key: key); 85 | 86 | @override 87 | Widget build(BuildContext context) { 88 | return GridView.builder( 89 | itemCount: movieList.length, 90 | gridDelegate: SliverGridDelegateWithFixedCrossAxisCount( 91 | crossAxisCount: 2, 92 | childAspectRatio: 1.5 / 1.8, 93 | ), 94 | itemBuilder: (context, index) { 95 | return Padding( 96 | padding: const EdgeInsets.all(8.0), 97 | child: Card( 98 | child: Padding( 99 | padding: const EdgeInsets.all(4.0), 100 | child: Image.network( 101 | 'https://image.tmdb.org/t/p/w342${movieList[index].posterPath}', 102 | fit: BoxFit.fill, 103 | ), 104 | ), 105 | ), 106 | ); 107 | }, 108 | ); 109 | } 110 | } 111 | 112 | class Error extends StatelessWidget { 113 | final String errorMessage; 114 | 115 | final Function onRetryPressed; 116 | 117 | const Error({Key key, this.errorMessage, this.onRetryPressed}) 118 | : super(key: key); 119 | 120 | @override 121 | Widget build(BuildContext context) { 122 | return Center( 123 | child: Column( 124 | mainAxisAlignment: MainAxisAlignment.center, 125 | children: [ 126 | Text( 127 | errorMessage, 128 | textAlign: TextAlign.center, 129 | style: TextStyle( 130 | color: Colors.lightGreen, 131 | fontSize: 18, 132 | ), 133 | ), 134 | SizedBox(height: 8), 135 | RaisedButton( 136 | color: Colors.lightGreen, 137 | child: Text('Retry', style: TextStyle(color: Colors.white)), 138 | onPressed: onRetryPressed, 139 | ) 140 | ], 141 | ), 142 | ); 143 | } 144 | } 145 | 146 | class Loading extends StatelessWidget { 147 | final String loadingMessage; 148 | 149 | const Loading({Key key, this.loadingMessage}) : super(key: key); 150 | 151 | @override 152 | Widget build(BuildContext context) { 153 | return Center( 154 | child: Column( 155 | mainAxisAlignment: MainAxisAlignment.center, 156 | children: [ 157 | Text( 158 | loadingMessage, 159 | textAlign: TextAlign.center, 160 | style: TextStyle( 161 | color: Colors.lightGreen, 162 | fontSize: 24, 163 | ), 164 | ), 165 | SizedBox(height: 24), 166 | CircularProgressIndicator( 167 | valueColor: AlwaysStoppedAnimation(Colors.lightGreen), 168 | ), 169 | ], 170 | ), 171 | ); 172 | } 173 | } 174 | -------------------------------------------------------------------------------- /lib/movie_bloc.dart: -------------------------------------------------------------------------------- 1 | import 'dart:async'; 2 | 3 | import 'package:network_handling/api_response.dart'; 4 | import 'package:network_handling/movie_repository.dart'; 5 | 6 | import 'movie_response.dart'; 7 | 8 | class MovieBloc { 9 | MovieRepository _movieRepository; 10 | 11 | StreamController _movieListController; 12 | 13 | StreamSink>> get movieListSink => 14 | _movieListController.sink; 15 | 16 | Stream>> get movieListStream => 17 | _movieListController.stream; 18 | 19 | MovieBloc() { 20 | _movieListController = StreamController>>(); 21 | _movieRepository = MovieRepository(); 22 | fetchMovieList(); 23 | } 24 | 25 | fetchMovieList() async { 26 | movieListSink.add(ApiResponse.loading('Fetching Popular Movies')); 27 | try { 28 | List movies = await _movieRepository.fetchMovieList(); 29 | movieListSink.add(ApiResponse.completed(movies)); 30 | } catch (e) { 31 | movieListSink.add(ApiResponse.error(e.toString())); 32 | print(e); 33 | } 34 | } 35 | 36 | dispose() { 37 | _movieListController?.close(); 38 | } 39 | } 40 | -------------------------------------------------------------------------------- /lib/movie_repository.dart: -------------------------------------------------------------------------------- 1 | import 'package:network_handling/api_base_helper.dart'; 2 | import 'package:network_handling/movie_response.dart'; 3 | 4 | class MovieRepository { 5 | final String _apiKey = "78b9f63937763a206bff26c070b94158"; 6 | 7 | ApiBaseHelper _helper = ApiBaseHelper(); 8 | 9 | Future> fetchMovieList() async { 10 | final response = await _helper.get("movie/popular?api_key=$_apiKey"); 11 | return MovieResponse.fromJson(response).results; 12 | } 13 | } 14 | -------------------------------------------------------------------------------- /lib/movie_response.dart: -------------------------------------------------------------------------------- 1 | class MovieResponse { 2 | int page; 3 | int totalResults; 4 | int totalPages; 5 | List results; 6 | 7 | MovieResponse({this.page, this.totalResults, this.totalPages, this.results}); 8 | 9 | MovieResponse.fromJson(Map json) { 10 | page = json['page']; 11 | totalResults = json['total_results']; 12 | totalPages = json['total_pages']; 13 | if (json['results'] != null) { 14 | results = new List(); 15 | json['results'].forEach((v) { 16 | results.add(new Movie.fromJson(v)); 17 | }); 18 | } 19 | } 20 | 21 | Map toJson() { 22 | final Map data = new Map(); 23 | data['page'] = this.page; 24 | data['total_results'] = this.totalResults; 25 | data['total_pages'] = this.totalPages; 26 | if (this.results != null) { 27 | data['results'] = this.results.map((v) => v.toJson()).toList(); 28 | } 29 | return data; 30 | } 31 | } 32 | 33 | class Movie { 34 | int voteCount; 35 | int id; 36 | bool video; 37 | var voteAverage; 38 | String title; 39 | double popularity; 40 | String posterPath; 41 | String originalLanguage; 42 | String originalTitle; 43 | List genreIds; 44 | String backdropPath; 45 | bool adult; 46 | String overview; 47 | String releaseDate; 48 | 49 | Movie( 50 | {this.voteCount, 51 | this.id, 52 | this.video, 53 | this.voteAverage, 54 | this.title, 55 | this.popularity, 56 | this.posterPath, 57 | this.originalLanguage, 58 | this.originalTitle, 59 | this.genreIds, 60 | this.backdropPath, 61 | this.adult, 62 | this.overview, 63 | this.releaseDate}); 64 | 65 | Movie.fromJson(Map json) { 66 | voteCount = json['vote_count']; 67 | id = json['id']; 68 | video = json['video']; 69 | voteAverage = json['vote_average']; 70 | title = json['title']; 71 | popularity = json['popularity']; 72 | posterPath = json['poster_path']; 73 | originalLanguage = json['original_language']; 74 | originalTitle = json['original_title']; 75 | genreIds = json['genre_ids'].cast(); 76 | backdropPath = json['backdrop_path']; 77 | adult = json['adult']; 78 | overview = json['overview']; 79 | releaseDate = json['release_date']; 80 | } 81 | 82 | Map toJson() { 83 | final Map data = new Map(); 84 | data['vote_count'] = this.voteCount; 85 | data['id'] = this.id; 86 | data['video'] = this.video; 87 | data['vote_average'] = this.voteAverage; 88 | data['title'] = this.title; 89 | data['popularity'] = this.popularity; 90 | data['poster_path'] = this.posterPath; 91 | data['original_language'] = this.originalLanguage; 92 | data['original_title'] = this.originalTitle; 93 | data['genre_ids'] = this.genreIds; 94 | data['backdrop_path'] = this.backdropPath; 95 | data['adult'] = this.adult; 96 | data['overview'] = this.overview; 97 | data['release_date'] = this.releaseDate; 98 | return data; 99 | } 100 | } -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: network_handling 2 | description: A Flutter project to show network error handling 3 | 4 | # The following defines the version and build number for your application. 5 | # A version number is three numbers separated by dots, like 1.2.43 6 | # followed by an optional build number separated by a +. 7 | # Both the version and the builder number may be overridden in flutter 8 | # build by specifying --build-name and --build-number, respectively. 9 | # In Android, build-name is used as versionName while build-number used as versionCode. 10 | # Read more about Android versioning at https://developer.android.com/studio/publish/versioning 11 | # In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion. 12 | # Read more about iOS versioning at 13 | # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html 14 | version: 1.0.0+1 15 | 16 | environment: 17 | sdk: ">=2.1.0 <3.0.0" 18 | 19 | dependencies: 20 | flutter: 21 | sdk: flutter 22 | http: ^0.12.0 23 | 24 | # The following adds the Cupertino Icons font to your application. 25 | # Use with the CupertinoIcons class for iOS style icons. 26 | cupertino_icons: ^0.1.2 27 | 28 | dev_dependencies: 29 | flutter_test: 30 | sdk: flutter 31 | 32 | 33 | # For information on the generic Dart part of this file, see the 34 | # following page: https://www.dartlang.org/tools/pub/pubspec 35 | 36 | # The following section is specific to Flutter. 37 | flutter: 38 | 39 | # The following line ensures that the Material Icons font is 40 | # included with your application, so that you can use the icons in 41 | # the material Icons class. 42 | uses-material-design: true 43 | 44 | # To add assets to your application, add an assets section, like this: 45 | # assets: 46 | # - images/a_dot_burr.jpeg 47 | # - images/a_dot_ham.jpeg 48 | 49 | # An image asset can refer to one or more resolution-specific "variants", see 50 | # https://flutter.dev/assets-and-images/#resolution-aware. 51 | 52 | # For details regarding adding assets from package dependencies, see 53 | # https://flutter.dev/assets-and-images/#from-packages 54 | 55 | # To add custom fonts to your application, add a fonts section here, 56 | # in this "flutter" section. Each entry in this list should have a 57 | # "family" key with the font family name, and a "fonts" key with a 58 | # list giving the asset and other descriptors for the font. For 59 | # example: 60 | # fonts: 61 | # - family: Schyler 62 | # fonts: 63 | # - asset: fonts/Schyler-Regular.ttf 64 | # - asset: fonts/Schyler-Italic.ttf 65 | # style: italic 66 | # - family: Trajan Pro 67 | # fonts: 68 | # - asset: fonts/TrajanPro.ttf 69 | # - asset: fonts/TrajanPro_Bold.ttf 70 | # weight: 700 71 | # 72 | # For details regarding fonts from package dependencies, 73 | # see https://flutter.dev/custom-fonts/#from-packages 74 | -------------------------------------------------------------------------------- /test/widget_test.dart: -------------------------------------------------------------------------------- 1 | // This is a basic Flutter widget test. 2 | // 3 | // To perform an interaction with a widget in your test, use the WidgetTester 4 | // utility that Flutter provides. For example, you can send tap and scroll 5 | // gestures. You can also use WidgetTester to find child widgets in the widget 6 | // tree, read text, and verify that the values of widget properties are correct. 7 | 8 | import 'package:flutter/material.dart'; 9 | import 'package:flutter_test/flutter_test.dart'; 10 | 11 | import 'package:network_handling/main.dart'; 12 | 13 | void main() { 14 | testWidgets('Counter increments smoke test', (WidgetTester tester) async { 15 | // Build our app and trigger a frame. 16 | await tester.pumpWidget(MyApp()); 17 | 18 | // Verify that our counter starts at 0. 19 | expect(find.text('0'), findsOneWidget); 20 | expect(find.text('1'), findsNothing); 21 | 22 | // Tap the '+' icon and trigger a frame. 23 | await tester.tap(find.byIcon(Icons.add)); 24 | await tester.pump(); 25 | 26 | // Verify that our counter has incremented. 27 | expect(find.text('0'), findsNothing); 28 | expect(find.text('1'), findsOneWidget); 29 | }); 30 | } 31 | --------------------------------------------------------------------------------