├── .gitignore ├── .metadata ├── README.md ├── android ├── .gitignore ├── app │ ├── build.gradle │ └── src │ │ ├── debug │ │ └── AndroidManifest.xml │ │ ├── main │ │ ├── AndroidManifest.xml │ │ ├── java │ │ │ └── com │ │ │ │ └── example │ │ │ │ └── simplegridlottery │ │ │ │ └── MainActivity.java │ │ └── 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 ├── images ├── gift1.jpg ├── gift2.jpg └── gift3.jpg ├── ios ├── .gitignore ├── 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.h │ ├── AppDelegate.m │ ├── 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 │ └── main.m ├── lib ├── main.dart └── widget │ ├── simple_lottery_controller.dart │ └── simple_lottery_widget.dart ├── preview_image └── simple_grid_lottery.gif ├── pubspec.lock ├── pubspec.yaml ├── test └── widget_test.dart └── web └── index.html /.gitignore: -------------------------------------------------------------------------------- 1 | # Miscellaneous 2 | *.class 3 | *.log 4 | *.pyc 5 | *.swp 6 | .DS_Store 7 | .atom/ 8 | .buildlog/ 9 | .history 10 | .svn/ 11 | 12 | # IntelliJ related 13 | *.iml 14 | *.ipr 15 | *.iws 16 | .idea/ 17 | 18 | # The .vscode folder contains launch configuration and tasks you configure in 19 | # VS Code which you may wish to be included in version control, so this line 20 | # is commented out by default. 21 | #.vscode/ 22 | 23 | # Flutter/Dart/Pub related 24 | **/doc/api/ 25 | .dart_tool/ 26 | .flutter-plugins 27 | .flutter-plugins-dependencies 28 | .packages 29 | .pub-cache/ 30 | .pub/ 31 | /build/ 32 | 33 | # Web related 34 | lib/generated_plugin_registrant.dart 35 | 36 | # Exceptions to above rules. 37 | !/packages/flutter_tools/test/data/dart_dependencies_test/**/.packages 38 | -------------------------------------------------------------------------------- /.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: 0b8abb4724aa590dd0f429683339b1e045a1594d 8 | channel: unknown 9 | 10 | project_type: app 11 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # simplegridlottery 2 | 3 | ![image](https://github.com/JDNew/SimpleGridLottery/blob/master/preview_image/simple_grid_lottery.gif) 4 | 5 | 6 | -------------------------------------------------------------------------------- /android/.gitignore: -------------------------------------------------------------------------------- 1 | gradle-wrapper.jar 2 | /.gradle 3 | /captures/ 4 | /gradlew 5 | /gradlew.bat 6 | /local.properties 7 | GeneratedPluginRegistrant.java 8 | -------------------------------------------------------------------------------- /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 from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" 26 | 27 | android { 28 | compileSdkVersion 28 29 | 30 | lintOptions { 31 | disable 'InvalidPackage' 32 | } 33 | 34 | defaultConfig { 35 | // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). 36 | applicationId "com.example.simplegridlottery" 37 | minSdkVersion 16 38 | targetSdkVersion 28 39 | versionCode flutterVersionCode.toInteger() 40 | versionName flutterVersionName 41 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 42 | } 43 | 44 | buildTypes { 45 | release { 46 | // TODO: Add your own signing config for the release build. 47 | // Signing with the debug keys for now, so `flutter run --release` works. 48 | signingConfig signingConfigs.debug 49 | } 50 | } 51 | } 52 | 53 | flutter { 54 | source '../..' 55 | } 56 | 57 | dependencies { 58 | testImplementation 'junit:junit:4.12' 59 | androidTestImplementation 'androidx.test:runner:1.1.1' 60 | androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.1' 61 | } 62 | -------------------------------------------------------------------------------- /android/app/src/debug/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /android/app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 8 | 12 | 19 | 20 | 21 | 22 | 23 | 24 | 26 | 29 | 30 | 31 | -------------------------------------------------------------------------------- /android/app/src/main/java/com/example/simplegridlottery/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.example.simplegridlottery; 2 | 3 | import androidx.annotation.NonNull; 4 | import io.flutter.embedding.android.FlutterActivity; 5 | import io.flutter.embedding.engine.FlutterEngine; 6 | import io.flutter.plugins.GeneratedPluginRegistrant; 7 | 8 | public class MainActivity extends FlutterActivity { 9 | @Override 10 | public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) { 11 | GeneratedPluginRegistrant.registerWith(flutterEngine); 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/JDChi/Flutter-Grid-Lottery/f5d432cd81101dbcb762d5251015fcd76acc5e7a/android/app/src/main/res/mipmap-hdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-mdpi/ic_launcher.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/JDChi/Flutter-Grid-Lottery/f5d432cd81101dbcb762d5251015fcd76acc5e7a/android/app/src/main/res/mipmap-mdpi/ic_launcher.png -------------------------------------------------------------------------------- /android/app/src/main/res/mipmap-xhdpi/ic_launcher.png: -------------------------------------------------------------------------------- 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/android/app/src/main/res/values/styles.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 8 | 9 | -------------------------------------------------------------------------------- /android/app/src/profile/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 3 | 6 | 7 | 8 | -------------------------------------------------------------------------------- /android/build.gradle: -------------------------------------------------------------------------------- 1 | buildscript { 2 | repositories { 3 | google() 4 | jcenter() 5 | } 6 | 7 | dependencies { 8 | classpath 'com.android.tools.build:gradle:3.5.0' 9 | } 10 | } 11 | 12 | allprojects { 13 | repositories { 14 | google() 15 | jcenter() 16 | } 17 | } 18 | 19 | rootProject.buildDir = '../build' 20 | subprojects { 21 | project.buildDir = "${rootProject.buildDir}/${project.name}" 22 | } 23 | subprojects { 24 | project.evaluationDependsOn(':app') 25 | } 26 | 27 | task clean(type: Delete) { 28 | delete rootProject.buildDir 29 | } 30 | -------------------------------------------------------------------------------- /android/gradle.properties: -------------------------------------------------------------------------------- 1 | org.gradle.jvmargs=-Xmx1536M 2 | android.enableR8=true 3 | android.useAndroidX=true 4 | android.enableJetifier=true 5 | -------------------------------------------------------------------------------- /android/gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Fri Jun 23 08:50:38 CEST 2017 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-all.zip 7 | -------------------------------------------------------------------------------- /android/settings.gradle: -------------------------------------------------------------------------------- 1 | include ':app' 2 | 3 | def flutterProjectRoot = rootProject.projectDir.parentFile.toPath() 4 | 5 | def plugins = new Properties() 6 | def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins') 7 | if (pluginsFile.exists()) { 8 | pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) } 9 | } 10 | 11 | plugins.each { name, path -> 12 | def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile() 13 | include ":$name" 14 | project(":$name").projectDir = pluginDirectory 15 | } 16 | -------------------------------------------------------------------------------- /images/gift1.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/JDChi/Flutter-Grid-Lottery/f5d432cd81101dbcb762d5251015fcd76acc5e7a/images/gift1.jpg -------------------------------------------------------------------------------- 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https://raw.githubusercontent.com/JDChi/Flutter-Grid-Lottery/f5d432cd81101dbcb762d5251015fcd76acc5e7a/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 | $(DEVELOPMENT_LANGUAGE) 7 | CFBundleExecutable 8 | $(EXECUTABLE_NAME) 9 | CFBundleIdentifier 10 | $(PRODUCT_BUNDLE_IDENTIFIER) 11 | CFBundleInfoDictionaryVersion 12 | 6.0 13 | CFBundleName 14 | simplegridlottery 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/main.m: -------------------------------------------------------------------------------- 1 | #import 2 | #import 3 | #import "AppDelegate.h" 4 | 5 | int main(int argc, char* argv[]) { 6 | @autoreleasepool { 7 | return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class])); 8 | } 9 | } 10 | -------------------------------------------------------------------------------- /lib/main.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/material.dart'; 2 | import 'package:simplegridlottery/widget/simple_lottery_controller.dart'; 3 | import 'package:simplegridlottery/widget/simple_lottery_widget.dart'; 4 | 5 | void main() => runApp(MyApp()); 6 | 7 | class MyApp extends StatelessWidget { 8 | @override 9 | Widget build(BuildContext context) { 10 | return MaterialApp( 11 | title: 'Flutter Demo', 12 | theme: ThemeData( 13 | primarySwatch: Colors.blue, 14 | ), 15 | home: MyHomePage(title: 'Simple Grid Lottery'), 16 | ); 17 | } 18 | } 19 | 20 | class MyHomePage extends StatefulWidget { 21 | MyHomePage({Key? key, required this.title}) : super(key: key); 22 | final String title; 23 | 24 | @override 25 | _MyHomePageState createState() => _MyHomePageState(); 26 | } 27 | 28 | class _MyHomePageState extends State { 29 | late SimpleLotteryController simpleLotteryController; 30 | List rewardsList = []; 31 | 32 | @override 33 | void initState() { 34 | rewardsList 35 | ..add("images/gift1.jpg") 36 | ..add("images/gift2.jpg") 37 | ..add("images/gift1.jpg") 38 | ..add("images/gift2.jpg") 39 | ..add("images/gift1.jpg") 40 | ..add("images/gift2.jpg") 41 | ..add("images/gift1.jpg") 42 | ..add("images/gift2.jpg"); 43 | simpleLotteryController = SimpleLotteryController(rewardsList: rewardsList); 44 | simpleLotteryController.addListener(() { 45 | if (simpleLotteryController.value.isPlaying) { 46 | } else if (simpleLotteryController.value.isFinish) {} 47 | print(simpleLotteryController.value.toString()); 48 | }); 49 | super.initState(); 50 | } 51 | 52 | @override 53 | Widget build(BuildContext context) { 54 | return Scaffold( 55 | appBar: AppBar( 56 | title: Text(widget.title), 57 | ), 58 | body: Column( 59 | children: [ 60 | TextButton( 61 | child: Text("模拟在假抽奖动画过程中加入最后结果"), 62 | onPressed: () { 63 | simpleLotteryController.startFake( 64 | singleRoundFakeDuration: Duration(milliseconds: 1000)); 65 | Future.delayed(Duration(seconds: 2)).then((_) { 66 | simpleLotteryController.start( 67 | target: 4, 68 | duration: Duration(milliseconds: 2500), 69 | repeatRound: 2); 70 | }); 71 | }), 72 | Center( 73 | child: SimpleLotteryWidget( 74 | controller: simpleLotteryController, 75 | onPress: () { 76 | simpleLotteryController.start( 77 | target: 4, 78 | duration: Duration(milliseconds: 2500), 79 | repeatRound: 2); 80 | }, 81 | ), 82 | ), 83 | TextButton( 84 | onPressed: () { 85 | _resetRewardList(); 86 | }, 87 | child: Text('Reset')) 88 | ], 89 | ), 90 | ); 91 | } 92 | 93 | /// 当抽奖结束后，变更抽奖列表 94 | void _resetRewardList() { 95 | setState(() { 96 | rewardsList 97 | ..clear() 98 | ..add("images/gift3.jpg") 99 | ..add("images/gift2.jpg") 100 | ..add("images/gift3.jpg") 101 | ..add("images/gift2.jpg") 102 | ..add("images/gift3.jpg") 103 | ..add("images/gift2.jpg") 104 | ..add("images/gift3.jpg") 105 | ..add("images/gift2.jpg"); 106 | simpleLotteryController = 107 | SimpleLotteryController(rewardsList: rewardsList); 108 | }); 109 | } 110 | } 111 | -------------------------------------------------------------------------------- /lib/widget/simple_lottery_controller.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/cupertino.dart'; 2 | 3 | class SimpleLotteryValue { 4 | SimpleLotteryValue( 5 | {this.target = 0, 6 | this.isFinish = false, 7 | this.isPlaying = false, 8 | this.isFake = false, 9 | this.isSetTargetDuringFake = false, 10 | this.singleRoundFakeDuration = const Duration(), 11 | this.duration = const Duration(), 12 | this.repeatRound = 1, 13 | required this.rewardsList}); 14 | 15 | /// 中奖目标 16 | final int target; 17 | 18 | final bool isPlaying; 19 | final bool isFinish; 20 | 21 | /// 只是进行动画，无抽奖结果 22 | final bool isFake; 23 | final bool isSetTargetDuringFake; 24 | 25 | /// 转动的圈数 26 | final int repeatRound; 27 | 28 | /// 实际抽奖总耗时 29 | final Duration duration; 30 | 31 | /// 奖品列表 32 | final List rewardsList; 33 | 34 | /// 假抽奖单圈耗时 35 | final Duration singleRoundFakeDuration; 36 | 37 | SimpleLotteryValue copyWith( 38 | {int? target, 39 | bool? isPlaying, 40 | bool? isFinish, 41 | bool? isFake, 42 | bool? isSetTargetDuringFake, 43 | int? repeatRound, 44 | Duration? duration, 45 | List? rewardsList, 46 | Duration? singleRoundFakeDuration}) { 47 | return SimpleLotteryValue( 48 | target: target ?? this.target, 49 | isFinish: isFinish ?? this.isFinish, 50 | isPlaying: isPlaying ?? this.isPlaying, 51 | isFake: isFake ?? this.isFake, 52 | isSetTargetDuringFake: 53 | isSetTargetDuringFake ?? this.isSetTargetDuringFake, 54 | repeatRound: repeatRound ?? this.repeatRound, 55 | duration: duration ?? this.duration, 56 | singleRoundFakeDuration: 57 | singleRoundFakeDuration ?? this.singleRoundFakeDuration, 58 | rewardsList: rewardsList ?? this.rewardsList); 59 | } 60 | 61 | @override 62 | String toString() { 63 | return "$runtimeType(target : $target , " 64 | "isPlaying : $isPlaying , " 65 | "isFinish : $isFinish , " 66 | "isFake : $isFake , " 67 | "isSetTargetDuringFake : $isSetTargetDuringFake , " 68 | "repeatRound : $repeatRound)"; 69 | } 70 | } 71 | 72 | abstract class IController { 73 | void start({int target, Duration duration, int repeatRound}); 74 | 75 | void startFake({Duration singleRoundFakeDuration}); 76 | 77 | void finish(); 78 | } 79 | 80 | class SimpleLotteryController extends ValueNotifier 81 | implements IController { 82 | SimpleLotteryController({required List rewardsList}) 83 | : super(SimpleLotteryValue(rewardsList: rewardsList)); 84 | 85 | /// 开启抽奖 86 | /// 87 | /// [target] 中奖目标 88 | @override 89 | void start({int target = 0, Duration? duration, int? repeatRound}) { 90 | // 九宫格抽奖里范围为0~8 91 | assert(target >= 0 && target <= 8); 92 | // 如果是在实际抽奖过程中，则不能多次start 93 | if (value.isPlaying && !value.isFake) { 94 | return; 95 | } 96 | value = value.copyWith( 97 | target: target, 98 | isPlaying: true, 99 | isFake: false, 100 | isSetTargetDuringFake: value.isFake, 101 | duration: duration, 102 | repeatRound: repeatRound); 103 | } 104 | 105 | /// 开启假的抽奖动画 106 | @override 107 | void startFake({Duration? singleRoundFakeDuration}) { 108 | if (value.isPlaying) { 109 | return; 110 | } 111 | value = value.copyWith( 112 | isPlaying: true, 113 | isFake: true, 114 | singleRoundFakeDuration: singleRoundFakeDuration); 115 | } 116 | 117 | @override 118 | void finish() { 119 | value = value.copyWith( 120 | isFinish: true, 121 | isPlaying: false, 122 | isSetTargetDuringFake: false, 123 | isFake: false); 124 | } 125 | } 126 | -------------------------------------------------------------------------------- /lib/widget/simple_lottery_widget.dart: -------------------------------------------------------------------------------- 1 | import 'package:flutter/cupertino.dart'; 2 | import 'package:flutter/material.dart'; 3 | import 'package:simplegridlottery/widget/simple_lottery_controller.dart'; 4 | 5 | class SimpleLotteryWidget extends StatefulWidget { 6 | final SimpleLotteryController controller; 7 | final Function? onPress; 8 | 9 | SimpleLotteryWidget({Key? key, required this.controller, this.onPress}); 10 | 11 | @override 12 | _SimpleLotteryWidgetState createState() => _SimpleLotteryWidgetState(); 13 | } 14 | 15 | class _SimpleLotteryWidgetState extends State 16 | with TickerProviderStateMixin { 17 | late Animation _selectedIndexTween; 18 | late AnimationController _startAnimateController; 19 | int _currentSelect = -1; 20 | final int _totalIndex = 8; 21 | 22 | late VoidCallback _listener; 23 | bool _continueToTarget = false; 24 | late List _rewardsList; 25 | 26 | /// 选中下标的映射 27 | final Map _selectIndexMap = const { 28 | 0: 0, 29 | 1: 3, 30 | 2: 6, 31 | 3: 7, 32 | 4: 8, 33 | 5: 5, 34 | 6: 2, 35 | 7: 1 36 | }; 37 | 38 | /// 反向map 39 | final Map _reverseSelectMap = const { 40 | 0: 0, 41 | 3: 1, 42 | 6: 2, 43 | 7: 3, 44 | 8: 4, 45 | 5: 5, 46 | 2: 6, 47 | 1: 7 48 | }; 49 | 50 | _SimpleLotteryWidgetState() { 51 | _listener = () { 52 | _continueToTarget = false; 53 | // 开启抽奖动画 54 | if (widget.controller.value.isPlaying) { 55 | // 如果是假的，则只是循环抽奖过程 56 | if (widget.controller.value.isFake) { 57 | _startFakeAnimation(); 58 | } // 如果在假装抽奖的过程中，设置了target 59 | else if (widget.controller.value.isSetTargetDuringFake) { 60 | setState(() { 61 | _continueToTarget = true; 62 | }); 63 | } // 常规的直接抽奖 64 | else { 65 | _startActualAnimation(); 66 | } 67 | } 68 | }; 69 | } 70 | 71 | /// 初始化tween 72 | /// 73 | /// [target] 中奖的目标 74 | Animation _initSelectIndexTween( 75 | {int begin = 0, int end = 0, Curve curve = Curves.linear}) => 76 | StepTween(begin: begin, end: end).animate( 77 | CurvedAnimation(parent: _startAnimateController, curve: curve)); 78 | 79 | _startFakeAnimation() { 80 | _selectedIndexTween = _initSelectIndexTween(end: _totalIndex); 81 | _startAnimateController 82 | ..reset() 83 | ..duration = widget.controller.value.singleRoundFakeDuration 84 | ..repeat(); 85 | } 86 | 87 | _startActualAnimation() { 88 | _selectedIndexTween = _initSelectIndexTween( 89 | end: widget.controller.value.repeatRound * _totalIndex + 90 | widget.controller.value.target, 91 | curve: Curves.easeOutCubic); 92 | _startAnimateController 93 | ..reset() 94 | ..duration = widget.controller.value.duration 95 | ..forward(); 96 | } 97 | 98 | @override 99 | void didUpdateWidget(covariant SimpleLotteryWidget oldWidget) { 100 | if (oldWidget.controller != widget.controller) { 101 | _reset(oldWidget); 102 | } 103 | super.didUpdateWidget(oldWidget); 104 | } 105 | 106 | _reset(SimpleLotteryWidget oldWidget) { 107 | oldWidget.controller.removeListener(_listener); 108 | widget.controller.addListener(_listener); 109 | _rewardsList = widget.controller.value.rewardsList; 110 | _currentSelect = -1; 111 | } 112 | 113 | @override 114 | void initState() { 115 | _startAnimateController = AnimationController( 116 | vsync: this, duration: widget.controller.value.duration); 117 | _selectedIndexTween = _initSelectIndexTween(end: _totalIndex); 118 | 119 | // 动画监听 120 | _startAnimateController.addListener(() { 121 | // 更新选中的下标 122 | _currentSelect = 123 | _selectIndexMap[_selectedIndexTween.value % _totalIndex]!; 124 | 125 | // 在假的抽奖过程到0位置时, 开启真的抽奖, 主要是起到无缝衔接 126 | if (_continueToTarget && _currentSelect == 0) { 127 | _continueToTarget = false; 128 | _startActualAnimation(); 129 | } 130 | if (_startAnimateController.isCompleted) { 131 | widget.controller.finish(); 132 | } 133 | setState(() {}); 134 | }); 135 | 136 | // 控制监听 137 | widget.controller.addListener(_listener); 138 | _rewardsList = widget.controller.value.rewardsList; 139 | super.initState(); 140 | } 141 | 142 | @override 143 | void deactivate() { 144 | widget.controller.removeListener(_listener); 145 | super.deactivate(); 146 | } 147 | 148 | @override 149 | void dispose() { 150 | _startAnimateController.dispose(); 151 | super.dispose(); 152 | } 153 | 154 | @override 155 | Widget build(BuildContext context) { 156 | return Container( 157 | width: 220, 158 | height: 220, 159 | child: GridView.builder( 160 | itemCount: 9, 161 | gridDelegate: SliverGridDelegateWithFixedCrossAxisCount( 162 | crossAxisCount: 3, crossAxisSpacing: 4, mainAxisSpacing: 4), 163 | itemBuilder: (context, index) { 164 | if (index != 4) { 165 | return Container( 166 | child: Stack( 167 | alignment: Alignment.center, 168 | children: [ 169 | Image.asset(_rewardsList[_reverseSelectMap[index]!]), 170 | Container( 171 | width: 50, 172 | height: 50, 173 | color: index == _currentSelect 174 | ? Colors.blue.withOpacity(0.5) 175 | : Colors.amber.withOpacity(0.5), 176 | ), 177 | ], 178 | ), 179 | ); 180 | } 181 | return GestureDetector( 182 | onTap: () { 183 | widget.onPress?.call(); 184 | }, 185 | child: Container( 186 | color: Colors.red, 187 | ), 188 | ); 189 | })); 190 | } 191 | } 192 | -------------------------------------------------------------------------------- /preview_image/simple_grid_lottery.gif: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/JDChi/Flutter-Grid-Lottery/f5d432cd81101dbcb762d5251015fcd76acc5e7a/preview_image/simple_grid_lottery.gif -------------------------------------------------------------------------------- /pubspec.lock: -------------------------------------------------------------------------------- 1 | # Generated by pub 2 | # See https://dart.dev/tools/pub/glossary#lockfile 3 | packages: 4 | async: 5 | dependency: transitive 6 | description: 7 | name: async 8 | url: "https://pub.flutter-io.cn" 9 | source: hosted 10 | version: "2.8.2" 11 | boolean_selector: 12 | dependency: transitive 13 | description: 14 | name: boolean_selector 15 | url: "https://pub.flutter-io.cn" 16 | source: hosted 17 | version: "2.1.0" 18 | characters: 19 | dependency: transitive 20 | description: 21 | name: characters 22 | url: "https://pub.flutter-io.cn" 23 | source: hosted 24 | version: "1.2.0" 25 | charcode: 26 | dependency: transitive 27 | description: 28 | name: charcode 29 | url: "https://pub.flutter-io.cn" 30 | source: hosted 31 | version: "1.3.1" 32 | clock: 33 | dependency: transitive 34 | description: 35 | name: clock 36 | url: "https://pub.flutter-io.cn" 37 | source: hosted 38 | version: "1.1.0" 39 | collection: 40 | dependency: transitive 41 | description: 42 | name: collection 43 | url: "https://pub.flutter-io.cn" 44 | source: hosted 45 | version: "1.15.0" 46 | cupertino_icons: 47 | dependency: "direct main" 48 | description: 49 | name: cupertino_icons 50 | url: "https://pub.flutter-io.cn" 51 | source: hosted 52 | version: "0.1.3" 53 | fake_async: 54 | dependency: transitive 55 | description: 56 | name: fake_async 57 | url: "https://pub.flutter-io.cn" 58 | source: hosted 59 | version: "1.2.0" 60 | flutter: 61 | dependency: "direct main" 62 | description: flutter 63 | source: sdk 64 | version: "0.0.0" 65 | flutter_test: 66 | dependency: "direct dev" 67 | description: flutter 68 | source: sdk 69 | version: "0.0.0" 70 | matcher: 71 | dependency: transitive 72 | description: 73 | name: matcher 74 | url: "https://pub.flutter-io.cn" 75 | source: hosted 76 | version: "0.12.11" 77 | meta: 78 | dependency: transitive 79 | description: 80 | name: meta 81 | url: "https://pub.flutter-io.cn" 82 | source: hosted 83 | version: "1.7.0" 84 | path: 85 | dependency: transitive 86 | description: 87 | name: path 88 | url: "https://pub.flutter-io.cn" 89 | source: hosted 90 | version: "1.8.0" 91 | sky_engine: 92 | dependency: transitive 93 | description: flutter 94 | source: sdk 95 | version: "0.0.99" 96 | source_span: 97 | dependency: transitive 98 | description: 99 | name: source_span 100 | url: "https://pub.flutter-io.cn" 101 | source: hosted 102 | version: "1.8.1" 103 | stack_trace: 104 | dependency: transitive 105 | description: 106 | name: stack_trace 107 | url: "https://pub.flutter-io.cn" 108 | source: hosted 109 | version: "1.10.0" 110 | stream_channel: 111 | dependency: transitive 112 | description: 113 | name: stream_channel 114 | url: "https://pub.flutter-io.cn" 115 | source: hosted 116 | version: "2.1.0" 117 | string_scanner: 118 | dependency: transitive 119 | description: 120 | name: string_scanner 121 | url: "https://pub.flutter-io.cn" 122 | source: hosted 123 | version: "1.1.0" 124 | term_glyph: 125 | dependency: transitive 126 | description: 127 | name: term_glyph 128 | url: "https://pub.flutter-io.cn" 129 | source: hosted 130 | version: "1.2.0" 131 | test_api: 132 | dependency: transitive 133 | description: 134 | name: test_api 135 | url: "https://pub.flutter-io.cn" 136 | source: hosted 137 | version: "0.4.3" 138 | typed_data: 139 | dependency: transitive 140 | description: 141 | name: typed_data 142 | url: "https://pub.flutter-io.cn" 143 | source: hosted 144 | version: "1.3.0" 145 | vector_math: 146 | dependency: transitive 147 | description: 148 | name: vector_math 149 | url: "https://pub.flutter-io.cn" 150 | source: hosted 151 | version: "2.1.1" 152 | sdks: 153 | dart: ">=2.14.0 <3.0.0" 154 | flutter: ">=1.22.0" 155 | -------------------------------------------------------------------------------- /pubspec.yaml: -------------------------------------------------------------------------------- 1 | name: simplegridlottery 2 | description: A new Flutter application. 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: ">=2.12.0 <3.0.0" 18 | flutter: ">=1.22.0" 19 | 20 | dependencies: 21 | flutter: 22 | sdk: flutter 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://dart.dev/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/gift1.jpg 47 | - images/gift2.jpg 48 | - images/gift3.jpg 49 | 50 | # An image asset can refer to one or more resolution-specific "variants", see 51 | # https://flutter.dev/assets-and-images/#resolution-aware. 52 | 53 | # For details regarding adding assets from package dependencies, see 54 | # https://flutter.dev/assets-and-images/#from-packages 55 | 56 | # To add custom fonts to your application, add a fonts section here, 57 | # in this "flutter" section. Each entry in this list should have a 58 | # "family" key with the font family name, and a "fonts" key with a 59 | # list giving the asset and other descriptors for the font. For 60 | # example: 61 | # fonts: 62 | # - family: Schyler 63 | # fonts: 64 | # - asset: fonts/Schyler-Regular.ttf 65 | # - asset: fonts/Schyler-Italic.ttf 66 | # style: italic 67 | # - family: Trajan Pro 68 | # fonts: 69 | # - asset: fonts/TrajanPro.ttf 70 | # - asset: fonts/TrajanPro_Bold.ttf 71 | # weight: 700 72 | # 73 | # For details regarding fonts from package dependencies, 74 | # see https://flutter.dev/custom-fonts/#from-packages 75 | -------------------------------------------------------------------------------- /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:simplegridlottery/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 | -------------------------------------------------------------------------------- /web/index.html: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | simplegridlottery 6 | 7 | 8 | 9 | 10 | 11 | --------------------------------------------------------------------------------