Add provider_shopper (#87)

This is the code for the sample at https://flutter.dev/docs/development/data-and-backend/state-mgmt/simple.
pull/121/head
Filip Hracek 5 years ago committed by GitHub
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commit 086a77b1b8
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# Miscellaneous
*.class
*.log
*.pyc
*.swp
.DS_Store
.atom/
.buildlog/
.history
.svn/
# IntelliJ related
*.iml
*.ipr
*.iws
.idea/
# Visual Studio Code related
.vscode/
# Flutter/Dart/Pub related
**/doc/api/
.dart_tool/
.flutter-plugins
.packages
.pub-cache/
.pub/
/build/
# Android related
**/android/**/gradle-wrapper.jar
**/android/.gradle
**/android/captures/
**/android/gradlew
**/android/gradlew.bat
**/android/local.properties
**/android/**/GeneratedPluginRegistrant.java
# iOS/XCode related
**/ios/**/*.mode1v3
**/ios/**/*.mode2v3
**/ios/**/*.moved-aside
**/ios/**/*.pbxuser
**/ios/**/*.perspectivev3
**/ios/**/*sync/
**/ios/**/.sconsign.dblite
**/ios/**/.tags*
**/ios/**/.vagrant/
**/ios/**/DerivedData/
**/ios/**/Icon?
**/ios/**/Pods/
**/ios/**/.symlinks/
**/ios/**/profile
**/ios/**/xcuserdata
**/ios/.generated/
**/ios/Flutter/App.framework
**/ios/Flutter/Flutter.framework
**/ios/Flutter/Generated.xcconfig
**/ios/Flutter/app.flx
**/ios/Flutter/app.zip
**/ios/Flutter/flutter_assets/
**/ios/ServiceDefinitions.json
**/ios/Runner/GeneratedPluginRegistrant.*
# Exceptions to above rules.
!**/ios/**/default.mode1v3
!**/ios/**/default.mode2v3
!**/ios/**/default.pbxuser
!**/ios/**/default.perspectivev3
!/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages

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# This file tracks properties of this Flutter project.
# Used by Flutter tool to assess capabilities and perform upgrades etc.
#
# This file should be version controlled and should not be manually edited.
version:
revision: 7a4c33425ddd78c54aba07d86f3f9a4a0051769b
channel: stable
project_type: app

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# provider_shopper
A Flutter sample app that shows a state management approach using the [Provider][] package.
This is the app discussed in the [Simple app state management][simple] section of
[flutter.dev][].
![An animated gif of the app in action](https://camo.githubusercontent.com/cf301d68c65279a074aa3334ef7fff548f87c0e2/68747470733a2f2f666c75747465722e6465762f6173736574732f646576656c6f706d656e742f646174612d616e642d6261636b656e642f73746174652d6d676d742f6d6f64656c2d73686f707065722d73637265656e636173742d653061646130653833636438653766646361643834313637623866376666643765623565663835623063623839353766303363366630356264313662316365612e676966)
[Provider]: https://pub.dev/packages/provider
[simple]: https://flutter.dev/docs/development/data-and-backend/state-mgmt/simple
[flutter.dev]: https://flutter.dev/
## Goals for this sample
* Show simple use of `Provider` for providing an immutable value to a subtree
* Illustrate a simple state management approach using the ChangeNotifier class
* Show use of `ProxyProvider` for provided objects that depend on other provided objects
## The important bits
### `lib/main.dart`
Here the app sets up objects it needs to track state: a catalog and a shopping cart. It builds
a `MultiProvider` to provide both objects at once to widgets further down the tree.
The `CartModel` instance is provided using a `ChangeNotifierProxyProvider`, which combines
two types of functionality:
1. It will automatically subscribe to changes in `CartModel` (if you only want this functionality
simply use `ChangeNotifierProvider`).
2. It takes the value of a previously provided object (in this case, `CatalogModel`, provided
just above), and uses it to build the value of `CartModel` (if you only want
_this_ functionality, simply use `ProxyProvider`).
### `lib/models/*`
This directory contains the model classes that are provided in `main.dart`. These classes
represent the app state.
### `lib/screens/*`
This directory contains widgets used to construct the two screens of the app: the catalog and
the cart. These widgets have access to the current state of both the catalog and the cart
via `Provider.of`.
## Questions/issues
If you have a general question about Provider, the best places to go are:
* [Provider documentation](https://pub.dev/documentation/provider/latest/)
* [StackOverflow](https://stackoverflow.com/questions/tagged/flutter)
If you run into an issue with the sample itself, please file an issue
in the [main Flutter repo](https://github.com/flutter/flutter/issues).

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include: package:pedantic/analysis_options.1.7.0.yaml
analyzer:
strong-mode:
implicit-casts: false
implicit-dynamic: false
linter:
rules:
- avoid_types_on_closure_parameters
- avoid_void_async
- await_only_futures
- camel_case_types
- cancel_subscriptions
- close_sinks
- constant_identifier_names
- control_flow_in_finally
- empty_statements
- hash_and_equals
- implementation_imports
- non_constant_identifier_names
- package_api_docs
- package_names
- package_prefixed_library_names
- test_types_in_equals
- throw_in_finally
- unnecessary_brace_in_string_interps
- unnecessary_getters_setters
- unnecessary_new
- unnecessary_statements

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def localProperties = new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
localPropertiesFile.withReader('UTF-8') { reader ->
localProperties.load(reader)
}
}
def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}
def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
flutterVersionCode = '1'
}
def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
flutterVersionName = '1.0'
}
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 28
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
lintOptions {
disable 'InvalidPackage'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "dev.flutter.provider_shopper"
minSdkVersion 16
targetSdkVersion 28
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="dev.flutter.provider_shopper">
<!-- Flutter needs it to communicate with the running application
to allow setting breakpoints, to provide hot reload, etc.
-->
<uses-permission android:name="android.permission.INTERNET"/>
</manifest>

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="dev.flutter.provider_shopper">
<!-- io.flutter.app.FlutterApplication is an android.app.Application that
calls FlutterMain.startInitialization(this); in its onCreate method.
In most cases you can leave this as-is, but you if you want to provide
additional functionality it is fine to subclass or reimplement
FlutterApplication and put your custom class here. -->
<application
android:name="io.flutter.app.FlutterApplication"
android:label="provider_shopper"
android:icon="@mipmap/ic_launcher">
<activity
android:name=".MainActivity"
android:launchMode="singleTop"
android:theme="@style/LaunchTheme"
android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
android:hardwareAccelerated="true"
android:windowSoftInputMode="adjustResize">
<!-- This keeps the window background of the activity showing
until Flutter renders its first frame. It can be removed if
there is no splash screen (such as the default splash screen
defined in @style/LaunchTheme). -->
<meta-data
android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
android:value="true" />
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
</application>
</manifest>

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package dev.flutter.provider_shopper
import android.os.Bundle
import io.flutter.app.FlutterActivity
import io.flutter.plugins.GeneratedPluginRegistrant
class MainActivity: FlutterActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
GeneratedPluginRegistrant.registerWith(this)
}
}

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<?xml version="1.0" encoding="utf-8"?>
<!-- Modify this file to customize your launch splash screen -->
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item android:drawable="@android:color/white" />
<!-- You can insert your own image assets here -->
<!-- <item>
<bitmap
android:gravity="center"
android:src="@mipmap/launch_image" />
</item> -->
</layer-list>

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<?xml version="1.0" encoding="utf-8"?>
<resources>
<style name="LaunchTheme" parent="@android:style/Theme.Black.NoTitleBar">
<!-- Show a splash screen on the activity. Automatically removed when
Flutter draws its first frame -->
<item name="android:windowBackground">@drawable/launch_background</item>
</style>
</resources>

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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="dev.flutter.provider_shopper">
<!-- Flutter needs it to communicate with the running application
to allow setting breakpoints, to provide hot reload, etc.
-->
<uses-permission android:name="android.permission.INTERNET"/>
</manifest>

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buildscript {
ext.kotlin_version = '1.2.71'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.2.1'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
rootProject.buildDir = '../build'
subprojects {
project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
project.evaluationDependsOn(':app')
}
task clean(type: Delete) {
delete rootProject.buildDir
}

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org.gradle.jvmargs=-Xmx1536M

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#Fri Jun 23 08:50:38 CEST 2017
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.2-all.zip

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include ':app'
def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()
def plugins = new Properties()
def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
if (pluginsFile.exists()) {
pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
}
plugins.each { name, path ->
def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
include ":$name"
project(":$name").projectDir = pluginDirectory
}

@ -0,0 +1,94 @@
Copyright (c) 2010, 2011 by vernon adams (vern@newtypography.co.uk),
with Reserved Font Name Corben.
This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL
-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------
PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.
The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.
DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.
"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).
"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).
"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.
"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.
PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
a copy of the Font Software, to use, study, copy, merge, embed, modify,
redistribute, and sell modified and unmodified copies of the Font
Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
included either as stand-alone text files, human-readable headers or
in the appropriate machine-readable metadata fields within text or
binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font
Name(s) unless explicit written permission is granted by the corresponding
Copyright Holder. This restriction only applies to the primary font name as
presented to the users.
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
Software shall not be used to promote, endorse or advertise any
Modified Version, except to acknowledge the contribution(s) of the
Copyright Holder(s) and the Author(s) or with their explicit written
permission.
5) The Font Software, modified or unmodified, in part or in whole,
must be distributed entirely under this license, and must not be
distributed under any other license. The requirement for fonts to
remain under this license does not apply to any document created
using the Font Software.
TERMINATION
This license becomes null and void if any of the above conditions are
not met.
DISCLAIMER
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
OTHER DEALINGS IN THE FONT SOFTWARE.

@ -0,0 +1,26 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>App</string>
<key>CFBundleIdentifier</key>
<string>io.flutter.flutter.app</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>App</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>1.0</string>
<key>MinimumOSVersion</key>
<string>8.0</string>
</dict>
</plist>

@ -0,0 +1 @@
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<?xml version="1.0" encoding="UTF-8"?>
<Workspace
version = "1.0">
<FileRef
location = "group:Runner.xcodeproj">
</FileRef>
</Workspace>

@ -0,0 +1,93 @@
<?xml version="1.0" encoding="UTF-8"?>
<Scheme
LastUpgradeVersion = "0910"
version = "1.3">
<BuildAction
parallelizeBuildables = "YES"
buildImplicitDependencies = "YES">
<BuildActionEntries>
<BuildActionEntry
buildForTesting = "YES"
buildForRunning = "YES"
buildForProfiling = "YES"
buildForArchiving = "YES"
buildForAnalyzing = "YES">
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "97C146ED1CF9000F007C117D"
BuildableName = "Runner.app"
BlueprintName = "Runner"
ReferencedContainer = "container:Runner.xcodeproj">
</BuildableReference>
</BuildActionEntry>
</BuildActionEntries>
</BuildAction>
<TestAction
buildConfiguration = "Debug"
selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
language = ""
shouldUseLaunchSchemeArgsEnv = "YES">
<Testables>
</Testables>
<MacroExpansion>
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "97C146ED1CF9000F007C117D"
BuildableName = "Runner.app"
BlueprintName = "Runner"
ReferencedContainer = "container:Runner.xcodeproj">
</BuildableReference>
</MacroExpansion>
<AdditionalOptions>
</AdditionalOptions>
</TestAction>
<LaunchAction
buildConfiguration = "Debug"
selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
language = ""
launchStyle = "0"
useCustomWorkingDirectory = "NO"
ignoresPersistentStateOnLaunch = "NO"
debugDocumentVersioning = "YES"
debugServiceExtension = "internal"
allowLocationSimulation = "YES">
<BuildableProductRunnable
runnableDebuggingMode = "0">
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BlueprintIdentifier = "97C146ED1CF9000F007C117D"
BuildableName = "Runner.app"
BlueprintName = "Runner"
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</BuildableReference>
</BuildableProductRunnable>
<AdditionalOptions>
</AdditionalOptions>
</LaunchAction>
<ProfileAction
buildConfiguration = "Profile"
shouldUseLaunchSchemeArgsEnv = "YES"
savedToolIdentifier = ""
useCustomWorkingDirectory = "NO"
debugDocumentVersioning = "YES">
<BuildableProductRunnable
runnableDebuggingMode = "0">
<BuildableReference
BuildableIdentifier = "primary"
BlueprintIdentifier = "97C146ED1CF9000F007C117D"
BuildableName = "Runner.app"
BlueprintName = "Runner"
ReferencedContainer = "container:Runner.xcodeproj">
</BuildableReference>
</BuildableProductRunnable>
</ProfileAction>
<AnalyzeAction
buildConfiguration = "Debug">
</AnalyzeAction>
<ArchiveAction
buildConfiguration = "Release"
revealArchiveInOrganizer = "YES">
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<?xml version="1.0" encoding="UTF-8"?>
<Workspace
version = "1.0">
<FileRef
location = "group:Runner.xcodeproj">
</FileRef>
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@ -0,0 +1,13 @@
import UIKit
import Flutter
@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
override func application(
_ application: UIApplication,
didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?
) -> Bool {
GeneratedPluginRegistrant.register(with: self)
return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}
}

@ -0,0 +1,122 @@
{
"images" : [
{
"size" : "20x20",
"idiom" : "iphone",
"filename" : "Icon-App-20x20@2x.png",
"scale" : "2x"
},
{
"size" : "20x20",
"idiom" : "iphone",
"filename" : "Icon-App-20x20@3x.png",
"scale" : "3x"
},
{
"size" : "29x29",
"idiom" : "iphone",
"filename" : "Icon-App-29x29@1x.png",
"scale" : "1x"
},
{
"size" : "29x29",
"idiom" : "iphone",
"filename" : "Icon-App-29x29@2x.png",
"scale" : "2x"
},
{
"size" : "29x29",
"idiom" : "iphone",
"filename" : "Icon-App-29x29@3x.png",
"scale" : "3x"
},
{
"size" : "40x40",
"idiom" : "iphone",
"filename" : "Icon-App-40x40@2x.png",
"scale" : "2x"
},
{
"size" : "40x40",
"idiom" : "iphone",
"filename" : "Icon-App-40x40@3x.png",
"scale" : "3x"
},
{
"size" : "60x60",
"idiom" : "iphone",
"filename" : "Icon-App-60x60@2x.png",
"scale" : "2x"
},
{
"size" : "60x60",
"idiom" : "iphone",
"filename" : "Icon-App-60x60@3x.png",
"scale" : "3x"
},
{
"size" : "20x20",
"idiom" : "ipad",
"filename" : "Icon-App-20x20@1x.png",
"scale" : "1x"
},
{
"size" : "20x20",
"idiom" : "ipad",
"filename" : "Icon-App-20x20@2x.png",
"scale" : "2x"
},
{
"size" : "29x29",
"idiom" : "ipad",
"filename" : "Icon-App-29x29@1x.png",
"scale" : "1x"
},
{
"size" : "29x29",
"idiom" : "ipad",
"filename" : "Icon-App-29x29@2x.png",
"scale" : "2x"
},
{
"size" : "40x40",
"idiom" : "ipad",
"filename" : "Icon-App-40x40@1x.png",
"scale" : "1x"
},
{
"size" : "40x40",
"idiom" : "ipad",
"filename" : "Icon-App-40x40@2x.png",
"scale" : "2x"
},
{
"size" : "76x76",
"idiom" : "ipad",
"filename" : "Icon-App-76x76@1x.png",
"scale" : "1x"
},
{
"size" : "76x76",
"idiom" : "ipad",
"filename" : "Icon-App-76x76@2x.png",
"scale" : "2x"
},
{
"size" : "83.5x83.5",
"idiom" : "ipad",
"filename" : "Icon-App-83.5x83.5@2x.png",
"scale" : "2x"
},
{
"size" : "1024x1024",
"idiom" : "ios-marketing",
"filename" : "Icon-App-1024x1024@1x.png",
"scale" : "1x"
}
],
"info" : {
"version" : 1,
"author" : "xcode"
}
}

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@ -0,0 +1,23 @@
{
"images" : [
{
"idiom" : "universal",
"filename" : "LaunchImage.png",
"scale" : "1x"
},
{
"idiom" : "universal",
"filename" : "LaunchImage@2x.png",
"scale" : "2x"
},
{
"idiom" : "universal",
"filename" : "LaunchImage@3x.png",
"scale" : "3x"
}
],
"info" : {
"version" : 1,
"author" : "xcode"
}
}

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@ -0,0 +1,5 @@
# Launch Screen Assets
You can customize the launch screen with your own desired assets by replacing the image files in this directory.
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.

@ -0,0 +1,37 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="12121" systemVersion="16G29" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="12089"/>
</dependencies>
<scenes>
<!--View Controller-->
<scene sceneID="EHf-IW-A2E">
<objects>
<viewController id="01J-lp-oVM" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="Ydg-fD-yQy"/>
<viewControllerLayoutGuide type="bottom" id="xbc-2k-c8Z"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<subviews>
<imageView opaque="NO" clipsSubviews="YES" multipleTouchEnabled="YES" contentMode="center" image="LaunchImage" translatesAutoresizingMaskIntoConstraints="NO" id="YRO-k0-Ey4">
</imageView>
</subviews>
<color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<constraints>
<constraint firstItem="YRO-k0-Ey4" firstAttribute="centerX" secondItem="Ze5-6b-2t3" secondAttribute="centerX" id="1a2-6s-vTC"/>
<constraint firstItem="YRO-k0-Ey4" firstAttribute="centerY" secondItem="Ze5-6b-2t3" secondAttribute="centerY" id="4X2-HB-R7a"/>
</constraints>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="53" y="375"/>
</scene>
</scenes>
<resources>
<image name="LaunchImage" width="168" height="185"/>
</resources>
</document>

@ -0,0 +1,26 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10117" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
</dependencies>
<scenes>
<!--Flutter View Controller-->
<scene sceneID="tne-QT-ifu">
<objects>
<viewController id="BYZ-38-t0r" customClass="FlutterViewController" sceneMemberID="viewController">
<layoutGuides>
<viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
<viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
</layoutGuides>
<view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
<rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite"/>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
</objects>
</scene>
</scenes>
</document>

@ -0,0 +1,45 @@
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>en</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>provider_shopper</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>$(FLUTTER_BUILD_NAME)</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>$(FLUTTER_BUILD_NUMBER)</string>
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UILaunchStoryboardName</key>
<string>LaunchScreen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<key>UISupportedInterfaceOrientations</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UISupportedInterfaceOrientations~ipad</key>
<array>
<string>UIInterfaceOrientationPortrait</string>
<string>UIInterfaceOrientationPortraitUpsideDown</string>
<string>UIInterfaceOrientationLandscapeLeft</string>
<string>UIInterfaceOrientationLandscapeRight</string>
</array>
<key>UIViewControllerBasedStatusBarAppearance</key>
<false/>
</dict>
</plist>

@ -0,0 +1 @@
#import "GeneratedPluginRegistrant.h"

@ -0,0 +1,17 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
final appTheme = ThemeData(
primarySwatch: Colors.yellow,
textTheme: TextTheme(
display4: TextStyle(
fontFamily: 'Corben',
fontWeight: FontWeight.w700,
fontSize: 24,
color: Colors.black,
),
),
);

@ -0,0 +1,44 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:provider_shopper/common/theme.dart';
import 'package:provider_shopper/models/cart.dart';
import 'package:provider_shopper/models/catalog.dart';
import 'package:provider_shopper/screens/cart.dart';
import 'package:provider_shopper/screens/catalog.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
// Using MultiProvider is convenient when providing multiple objects.
return MultiProvider(
providers: [
// In this sample app, CatalogModel never changes, so a simple Provider
// is sufficient.
Provider(builder: (context) => CatalogModel()),
// CartModel is implemented as a ChangeNotifier, which calls for the use
// of ChangeNotifierProvider. Moreover, CartModel depends
// on CatalogModel, so a ProxyProvider is needed.
ChangeNotifierProxyProvider<CatalogModel, CartModel>(
builder: (context, catalog, previousCart) =>
CartModel(catalog, previousCart)),
],
child: MaterialApp(
title: 'Provider Demo',
theme: appTheme,
initialRoute: '/',
routes: {
'/': (context) => MyCatalog(),
'/cart': (context) => MyCart(),
},
),
);
}
}

@ -0,0 +1,38 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/foundation.dart';
import 'package:provider_shopper/models/catalog.dart';
class CartModel extends ChangeNotifier {
/// The current catalog. Used to construct items from numeric ids.
final CatalogModel _catalog;
/// Internal, private state of the cart. Stores the ids of each item.
final List<int> _itemIds;
/// Construct a CartModel instance that is backed by a [CatalogModel] and
/// an optional previous state of the cart.
///
/// If [previous] is not `null`, it's items are copied to the newly
/// constructed instance.
CartModel(this._catalog, CartModel previous)
: assert(_catalog != null),
_itemIds = previous?._itemIds ?? [];
/// List of items in the cart.
List<Item> get items => _itemIds.map((id) => _catalog.getById(id)).toList();
/// The current total price of all items.
int get totalPrice =>
items.fold(0, (total, current) => total + current.price);
/// Adds [item] to cart. This is the only way to modify the cart from outside.
void add(Item item) {
_itemIds.add(item.id);
// This line tells [Model] that it should rebuild the widgets that
// depend on it.
notifyListeners();
}
}

@ -0,0 +1,63 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
/// A proxy of the catalog of items the user can buy.
///
/// In a real app, this might be backed by a backend and cached on device.
/// In this sample app, the catalog is procedurally generated and infinite.
///
/// For simplicity, the catalog is expected to be immutable (no products are
/// expected to be added, removed or changed during the execution of the app).
class CatalogModel {
static const _itemNames = [
'Code Smell',
'Control Flow',
'Interpreter',
'Recursion',
'Sprint',
'Heisenbug',
'Spaghetti',
'Hydra Code',
'Off-By-One',
'Scope',
'Callback',
'Closure',
'Automata',
'Bit Shift',
'Currying',
];
/// Get item by [id].
///
/// In this sample, the catalog is infinite, looping over [_itemNames].
Item getById(int id) => Item(id, _itemNames[id % _itemNames.length]);
/// Get item by its position in the catalog.
Item getByPosition(int position) {
// In this simplified case, an item's position in the catalog
// is also its id.
return getById(position);
}
}
@immutable
class Item {
final int id;
final String name;
final Color color;
final int price = 42;
Item(this.id, this.name)
// To make the sample app look nicer, each item is given one of the
// Material Design primary colors.
: color = Colors.primaries[id % Colors.primaries.length];
@override
int get hashCode => id;
@override
bool operator ==(Object other) => other is Item && other.id == id;
}

@ -0,0 +1,83 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:provider_shopper/models/cart.dart';
class MyCart extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Cart', style: Theme.of(context).textTheme.display4),
backgroundColor: Colors.white,
),
body: Container(
color: Colors.yellow,
child: Column(
children: [
Expanded(
child: Padding(
padding: const EdgeInsets.all(32),
child: _CartList(),
),
),
Divider(height: 4, color: Colors.black),
_CartTotal()
],
),
),
);
}
}
class _CartList extends StatelessWidget {
@override
Widget build(BuildContext context) {
var itemNameStyle = Theme.of(context).textTheme.title;
var cart = Provider.of<CartModel>(context);
return ListView.builder(
itemCount: cart.items.length,
itemBuilder: (context, index) => ListTile(
leading: Icon(Icons.done),
title: Text(
cart.items[index].name,
style: itemNameStyle,
),
),
);
}
}
class _CartTotal extends StatelessWidget {
@override
Widget build(BuildContext context) {
var hugeStyle = Theme.of(context).textTheme.display4.copyWith(fontSize: 48);
return SizedBox(
height: 200,
child: Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Consumer<CartModel>(
builder: (context, cart, child) =>
Text('\$${cart.totalPrice}', style: hugeStyle)),
SizedBox(width: 24),
FlatButton(
onPressed: () {
Scaffold.of(context).showSnackBar(
SnackBar(content: Text('Buying not supported yet.')));
},
color: Colors.white,
child: Text('BUY'),
),
],
),
),
);
}
}

@ -0,0 +1,97 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:provider_shopper/models/cart.dart';
import 'package:provider_shopper/models/catalog.dart';
class MyCatalog extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
body: CustomScrollView(
slivers: [
_MyAppBar(),
SliverToBoxAdapter(child: SizedBox(height: 12)),
SliverList(
delegate: SliverChildBuilderDelegate(
(context, index) => _MyListItem(index)),
),
],
),
);
}
}
class _AddButton extends StatelessWidget {
final Item item;
const _AddButton({Key key, @required this.item}) : super(key: key);
@override
Widget build(BuildContext context) {
var cart = Provider.of<CartModel>(context);
return FlatButton(
onPressed: cart.items.contains(item) ? null : () => cart.add(item),
splashColor: Theme.of(context).primaryColor,
child: cart.items.contains(item)
? Icon(Icons.check, semanticLabel: 'ADDED')
: Text('ADD'),
);
}
}
class _MyAppBar extends StatelessWidget {
@override
Widget build(BuildContext context) {
return SliverAppBar(
title: Text('Catalog', style: Theme.of(context).textTheme.display4),
floating: true,
actions: [
IconButton(
icon: Icon(Icons.shopping_cart),
onPressed: () => Navigator.pushNamed(context, '/cart'),
),
],
);
}
}
class _MyListItem extends StatelessWidget {
final int index;
_MyListItem(this.index, {Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
var catalog = Provider.of<CatalogModel>(context);
var item = catalog.getByPosition(index);
var textTheme = Theme.of(context).textTheme.title;
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
child: LimitedBox(
maxHeight: 48,
child: Row(
children: [
AspectRatio(
aspectRatio: 1,
child: Container(
color: item.color,
),
),
SizedBox(width: 24),
Expanded(
child: Text(item.name, style: textTheme),
),
SizedBox(width: 24),
_AddButton(item: item),
],
),
),
);
}
}

@ -0,0 +1,384 @@
# Generated by pub
# See https://dart.dev/tools/pub/glossary#lockfile
packages:
analyzer:
dependency: transitive
description:
name: analyzer
url: "https://pub.dartlang.org"
source: hosted
version: "0.36.4"
args:
dependency: transitive
description:
name: args
url: "https://pub.dartlang.org"
source: hosted
version: "1.5.2"
async:
dependency: transitive
description:
name: async
url: "https://pub.dartlang.org"
source: hosted
version: "2.2.0"
boolean_selector:
dependency: transitive
description:
name: boolean_selector
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.4"
charcode:
dependency: transitive
description:
name: charcode
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.2"
collection:
dependency: transitive
description:
name: collection
url: "https://pub.dartlang.org"
source: hosted
version: "1.14.11"
convert:
dependency: transitive
description:
name: convert
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.1"
crypto:
dependency: transitive
description:
name: crypto
url: "https://pub.dartlang.org"
source: hosted
version: "2.0.6"
csslib:
dependency: transitive
description:
name: csslib
url: "https://pub.dartlang.org"
source: hosted
version: "0.16.1"
flutter:
dependency: "direct main"
description: flutter
source: sdk
version: "0.0.0"
flutter_test:
dependency: "direct dev"
description: flutter
source: sdk
version: "0.0.0"
front_end:
dependency: transitive
description:
name: front_end
url: "https://pub.dartlang.org"
source: hosted
version: "0.1.19"
glob:
dependency: transitive
description:
name: glob
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.7"
html:
dependency: transitive
description:
name: html
url: "https://pub.dartlang.org"
source: hosted
version: "0.14.0+2"
http:
dependency: transitive
description:
name: http
url: "https://pub.dartlang.org"
source: hosted
version: "0.12.0+2"
http_multi_server:
dependency: transitive
description:
name: http_multi_server
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.0"
http_parser:
dependency: transitive
description:
name: http_parser
url: "https://pub.dartlang.org"
source: hosted
version: "3.1.3"
io:
dependency: transitive
description:
name: io
url: "https://pub.dartlang.org"
source: hosted
version: "0.3.3"
js:
dependency: transitive
description:
name: js
url: "https://pub.dartlang.org"
source: hosted
version: "0.6.1+1"
json_rpc_2:
dependency: transitive
description:
name: json_rpc_2
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.0"
kernel:
dependency: transitive
description:
name: kernel
url: "https://pub.dartlang.org"
source: hosted
version: "0.3.19"
matcher:
dependency: transitive
description:
name: matcher
url: "https://pub.dartlang.org"
source: hosted
version: "0.12.5"
meta:
dependency: transitive
description:
name: meta
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.6"
mime:
dependency: transitive
description:
name: mime
url: "https://pub.dartlang.org"
source: hosted
version: "0.9.6+3"
multi_server_socket:
dependency: transitive
description:
name: multi_server_socket
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.2"
node_preamble:
dependency: transitive
description:
name: node_preamble
url: "https://pub.dartlang.org"
source: hosted
version: "1.4.4"
package_config:
dependency: transitive
description:
name: package_config
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.5"
package_resolver:
dependency: transitive
description:
name: package_resolver
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.10"
path:
dependency: transitive
description:
name: path
url: "https://pub.dartlang.org"
source: hosted
version: "1.6.2"
pedantic:
dependency: transitive
description:
name: pedantic
url: "https://pub.dartlang.org"
source: hosted
version: "1.7.0"
pool:
dependency: transitive
description:
name: pool
url: "https://pub.dartlang.org"
source: hosted
version: "1.4.0"
provider:
dependency: "direct main"
description:
name: provider
url: "https://pub.dartlang.org"
source: hosted
version: "3.0.0+1"
pub_semver:
dependency: transitive
description:
name: pub_semver
url: "https://pub.dartlang.org"
source: hosted
version: "1.4.2"
quiver:
dependency: transitive
description:
name: quiver
url: "https://pub.dartlang.org"
source: hosted
version: "2.0.3"
shelf:
dependency: transitive
description:
name: shelf
url: "https://pub.dartlang.org"
source: hosted
version: "0.7.5"
shelf_packages_handler:
dependency: transitive
description:
name: shelf_packages_handler
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.4"
shelf_static:
dependency: transitive
description:
name: shelf_static
url: "https://pub.dartlang.org"
source: hosted
version: "0.2.8"
shelf_web_socket:
dependency: transitive
description:
name: shelf_web_socket
url: "https://pub.dartlang.org"
source: hosted
version: "0.2.3"
sky_engine:
dependency: transitive
description: flutter
source: sdk
version: "0.0.99"
source_map_stack_trace:
dependency: transitive
description:
name: source_map_stack_trace
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.5"
source_maps:
dependency: transitive
description:
name: source_maps
url: "https://pub.dartlang.org"
source: hosted
version: "0.10.8"
source_span:
dependency: transitive
description:
name: source_span
url: "https://pub.dartlang.org"
source: hosted
version: "1.5.5"
stack_trace:
dependency: transitive
description:
name: stack_trace
url: "https://pub.dartlang.org"
source: hosted
version: "1.9.3"
stream_channel:
dependency: transitive
description:
name: stream_channel
url: "https://pub.dartlang.org"
source: hosted
version: "2.0.0"
string_scanner:
dependency: transitive
description:
name: string_scanner
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.4"
term_glyph:
dependency: transitive
description:
name: term_glyph
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.0"
test:
dependency: "direct dev"
description:
name: test
url: "https://pub.dartlang.org"
source: hosted
version: "1.6.3"
test_api:
dependency: transitive
description:
name: test_api
url: "https://pub.dartlang.org"
source: hosted
version: "0.2.5"
test_core:
dependency: transitive
description:
name: test_core
url: "https://pub.dartlang.org"
source: hosted
version: "0.2.5"
typed_data:
dependency: transitive
description:
name: typed_data
url: "https://pub.dartlang.org"
source: hosted
version: "1.1.6"
vector_math:
dependency: transitive
description:
name: vector_math
url: "https://pub.dartlang.org"
source: hosted
version: "2.0.8"
vm_service_client:
dependency: transitive
description:
name: vm_service_client
url: "https://pub.dartlang.org"
source: hosted
version: "0.2.6+2"
watcher:
dependency: transitive
description:
name: watcher
url: "https://pub.dartlang.org"
source: hosted
version: "0.9.7+10"
web_socket_channel:
dependency: transitive
description:
name: web_socket_channel
url: "https://pub.dartlang.org"
source: hosted
version: "1.0.14"
yaml:
dependency: transitive
description:
name: yaml
url: "https://pub.dartlang.org"
source: hosted
version: "2.1.16"
sdks:
dart: ">=2.3.0 <3.0.0"

@ -0,0 +1,29 @@
name: provider_shopper
description: A shopping app sample that uses Provider for state management.
version: 1.0.0+1
environment:
sdk: ">=2.3.0 <3.0.0"
dependencies:
flutter:
sdk: flutter
# Import the provider package.
provider: ^3.0.0
dev_dependencies:
flutter_test:
sdk: flutter
test: ^1.5.1
flutter:
uses-material-design: true
fonts:
- family: Corben
fonts:
- asset: fonts/Corben/Corben-Bold.ttf
weight: 700

@ -0,0 +1,29 @@
// Copyright 2019 The Flutter team. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider_shopper/main.dart';
void main() {
testWidgets('smoke test', (tester) async {
// Build our app and trigger a frame.
await tester.pumpWidget(MyApp());
// Check that shopping cart is empty at start.
await tester.tap(find.byIcon(Icons.shopping_cart));
await tester.pumpAndSettle();
expect(find.text('\$0'), findsOneWidget);
// Buy an item.
await tester.pageBack();
await tester.pumpAndSettle();
await tester.tap(find.text('ADD').first);
// Check that the shopping cart is not empty anymore.
await tester.tap(find.byIcon(Icons.shopping_cart));
await tester.pumpAndSettle();
expect(find.text('\$0'), findsNothing);
});
}

@ -8,6 +8,7 @@ declare -a PROJECT_NAMES=(
"platform_design"
"platform_view_swift" \
"provider_counter" \
"provider_shopper" \
"shrine" \
"veggieseasons" \
)

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