增加null-safety

.gitignore

+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.flutter-plugins-dependencies
+.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/Flutter.podspec
+**/ios/Flutter/Generated.xcconfig
+**/ios/Flutter/app.flx
+**/ios/Flutter/app.zip
+**/ios/Flutter/flutter_assets/
+**/ios/Flutter/flutter_export_environment.sh
+**/ios/ServiceDefinitions.json
+**/ios/Runner/GeneratedPluginRegistrant.*
+
+# Exceptions to above rules.
+!**/ios/**/default.mode1v3
+!**/ios/**/default.mode2v3
+!**/ios/**/default.pbxuser
+!**/ios/**/default.perspectivev3
+
+.vscode/

.metadata

+# 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: 1aafb3a8b9b0c36241c5f5b34ee914770f015818
+  channel: stable
+
+project_type: package

README.md

+# 小熊有好货统计
+
+```sql
+CREATE TABLE IF NOT EXISTS Statistical (
+    id TEXT NOT NULL,
+    event INT,
+    type INT,
+    amount INT
+)
+```
+
+
+### 引入说明
+xxstatistical:
+    git:
+        url: 'git@git.xiaomanxiong.com:flutter-plugin/xxapp-statistical.git'
+        ref: 'null-safety'
\ No newline at end of file

lib/repository/datareport_repository.dart

+
+import 'package:flutter/foundation.dart';
+
+import 'impl/datareport_repository_impl.dart';
+
+abstract class DatareportRepository {
+  ///
+  /// 获取单例
+  ///
+  static DatareportRepository create() {
+    return DatareportRepositoryImpl.get();
+  }
+
+  ///
+  /// 数据上报接口
+  /// [list]   待上报的数据
+  ///
+  Future<dynamic> dataReport({@required List<dynamic> list});
+
+}
\ No newline at end of file

lib/repository/impl/datareport_repository_impl.dart

+import 'package:base_repository/base_repository.dart';
+import 'package:flutter/foundation.dart';
+
+import '../datareport_repository.dart';
+
+class DatareportRepositoryImpl extends DatareportRepository{
+
+  DatareportRepositoryImpl._();
+
+  static DatareportRepositoryImpl _instance;
+
+  static DatareportRepositoryImpl get() {
+    if (_instance == null) {
+      _instance = DatareportRepositoryImpl._();
+    }
+    return _instance;
+  }
+  
+  @override
+  Future dataReport({@required List<dynamic> list}) async{
+    Options options = Options(headers: {'base_url': 'v6'});
+    dynamic result = await DSDioUtil.getInstance().post(
+      '/drp.send',
+      data:{'data':list},
+      options:options
+    );
+    return result;
+  }
+  
+}
\ No newline at end of file

lib/src/entity/datareport_entity.dart

+import 'package:flutter/material.dart';
+
+///
+/// 数据上报实体类
+/// id、数据的自增id，如优惠券在数据库对应的id
+/// event、事件类型，1曝光事件  2点击事件  3流量次数事件
+/// type、数据类型，1信息流 2宣传口 3搜索结果 4优惠券 5活动配置
+/// amount 在app中定时周期内累计的上报数量,
+///
+class DataReportEntity {
+  String id;
+  int event;
+  int type;
+  int amount;
+
+  ///
+  /// [id]          数据id,来源服务器
+  /// [event]       事件类型：1曝光事件  2点击事件  3流量次数事件
+  /// [type]        数据类型：1信息流 2宣传口 3搜索结果 4优惠券 5活动配置
+  /// [amount]      点击或曝光的次数
+  ///
+  DataReportEntity({@required this.id,this.event = 2,this.type = 1,this.amount = 1});
+}
\ No newline at end of file

lib/src/sql/Sqlite3Helper.dart

+import 'package:flutter/material.dart';
+import 'dart:async';
+import 'package:path/path.dart';
+import 'package:sqflite/sqflite.dart';
+
+
+class Sqlite3Helper {
+
+  Sqlite3Helper._();
+
+  static Sqlite3Helper _instance;
+
+  static Sqlite3Helper create() {
+    if (_instance == null) {
+      _instance = Sqlite3Helper._();
+    }
+    return _instance;
+  }
+  
+  static Future<Database> database;
+
+  ///
+  /// 初始化数据库
+  ///
+  Future<int> init() async{
+    database = openDatabase(
+      join(await getDatabasesPath(), 'xx_database.db'),
+      onCreate: (db, version) {
+        return db.execute('CREATE TABLE IF NOT EXISTS Statistical(id TEXT NOT NULL, event INT,type INT,amount INT)');
+      },
+      version: 1
+    );
+    if(database == null){
+      print('==========>数据为空');
+      return Future.value(0);
+    }else{
+      return await queryCount();
+    }
+  }
+
+  ///
+  /// 添加数据
+  ///
+  void add({@required String id,int event,int type,int amount=1}) async{
+    if(database != null){
+      final db = await database;
+      String sql = 'INSERT INTO Statistical(id,event,type,amount) VALUES(?,?,?,?)';
+      await db.execute(sql,[id,event,type,amount]);
+    }
+  }
+
+  ///
+  /// 查询所有数据并根据id,event,type进行计数
+  ///
+  Future<List<Map<String, dynamic>>> query() async{
+    if(database != null){
+      final db = await database;
+      String sql = 'select id,event,type,COUNT(amount) as amount FROM Statistical GROUP BY id,event,type';
+      List<Map<String, dynamic>> results = await db.rawQuery(sql);
+      return results;
+    }
+    return Future.value([]);
+  }
+
+  ///
+  /// 查询数据库记录了多少条数据
+  ///  
+  Future<int> queryCount() async {
+    if(database != null){
+      final db = await database;
+      String sql = 'select COUNT(*) as amount FROM Statistical';
+      final List<Map<String, dynamic>> maps = await db.rawQuery(sql);
+      if(maps!=null && maps.length>0){
+        Map<String, dynamic> data =maps[0];
+        if(data['amount'] is int){
+          return data['amount'];
+        }
+      }
+    }
+    return 0;
+  }
+
+  ///
+  /// 删除所有数据
+  ///
+  Future<int> deleteAll() async{
+     if(database != null){
+       final db = await database;
+       int number = await db.delete('Statistical');
+       return number;
+     }
+    return Future.value(0);
+  }
+}
\ No newline at end of file

lib/src/statistical.dart

+
+import 'package:flutter/foundation.dart';
+import 'package:xxstatistical/repository/datareport_repository.dart';
+import 'package:xxstatistical/src/entity/datareport_entity.dart';
+import 'package:xxstatistical/src/sql/Sqlite3Helper.dart';
+
+class Statistical {
+  Statistical._();
+
+  static Statistical _instance;
+
+  static Statistical create() {
+    if (_instance == null) {
+      _instance = Statistical._();
+    }
+    return _instance;
+  }
+  ///
+  /// 设置缓存的最大数量(当达到最大数量之后就上传)
+  ///
+  int _cachesMax = 0;
+
+  ///
+  /// 计数，当前已经缓存的数据
+  ///
+  int _cachesNumber = 0;
+  
+  ///
+  /// 初始化
+  ///
+  Future<Null> init({int cachesMax = 50}) async{
+    this._cachesMax = cachesMax;
+    int amount = await Sqlite3Helper.create().init();
+    _cachesNumber = amount;
+    if(_cachesNumber>=10){
+      this._startUploadData();
+    }
+  }
+
+  ///
+  /// 记录数据
+  /// [data]        待记录的数据
+  ///
+  void record({@required DataReportEntity data}) {
+    _cachesNumber ++;
+    print('上报数据=======> cachesNumber:$_cachesNumber');
+    Sqlite3Helper.create().add(id:data.id,event:data.event,type:data.type,amount:data.amount);
+    if(_cachesNumber >= _cachesMax){
+      this._startUploadData();
+    }
+  }
+
+  ///
+  /// 开始上报数据
+  ///
+  Future<void> _startUploadData() async{
+    List<Map<String, dynamic>> list = await Sqlite3Helper.create().query();
+    DatareportRepository.create().dataReport(list: list).then((val){
+      print('上报数据=======> $val');
+      _cachesNumber = 0;
+    }).whenComplete(() async{
+      await Sqlite3Helper.create().deleteAll();
+    });
+  }
+}
\ No newline at end of file

lib/src/xxstatistical.dart

+
+import 'package:flutter/material.dart';
+import 'package:xxstatistical/src/statistical.dart';
+import 'entity/datareport_entity.dart';
+
+///
+/// 默认启动成功之后上报一次
+/// 数据量达到50条之后再次上报
+///
+class XXStatistical {
+
+  ///
+  /// 初始化小熊数据上报
+  /// APP启动上报/缓存日志数量/间隔时间  (暂时支持达到最大缓存日志数上传)
+  /// [cachesMax]           设置缓存的最大数量，默认是50
+  ///
+  static Future<Null> init({int cachesMax = 50}) async{
+    await Statistical.create().init(cachesMax:cachesMax);
+  }
+
+  ///
+  /// 数据上报
+  /// [id]      数据的自增id，如优惠券在数据库对应的id
+  /// [event]   事件类型，1曝光事件  2点击事件
+  /// [type]    数据类型，1信息流 2宣传口 3搜索结果 4优惠券 5活动配置
+  /// [amount]  在app中定时周期内累计的上报数量，累计到了10，就是10次
+  ///
+  static void dataReport({@required DataReportEntity data}){
+    Statistical.create().record(data:data);
+  }
+}
\ No newline at end of file

lib/tracker/exposure_widget.dart

+import 'package:flutter/gestures.dart';
+import 'package:flutter/widgets.dart';
+
+///
+/// 曝光监听组件
+///
+class ExposureScrollListener extends StatelessWidget {
+  
+  final List<Widget> slivers;
+  final Axis scrollDirection;
+  final bool reverse;
+  final ScrollController controller;
+  final bool primary;
+  final ScrollPhysics physics;
+  final bool shrinkWrap;
+  final Key center;
+  final double cacheExtent;
+  final double anchor;
+  final int semanticChildCount;
+  final DragStartBehavior dragStartBehavior;
+  final String restorationId;
+  final Clip clipBehavior;
+  const ExposureScrollListener({
+    Key key ,
+    @required this.slivers,
+    this.scrollDirection = Axis.vertical,
+    this.reverse = false,
+    this.controller,
+    this.primary,
+    this.physics,
+    this.shrinkWrap = false,
+    this.center,
+    this.cacheExtent,
+    this.anchor = 0.0,
+    this.semanticChildCount,
+    this.dragStartBehavior = DragStartBehavior.start,
+    this.restorationId,
+    this.clipBehavior = Clip.hardEdge
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomScrollView(
+        slivers:slivers,
+        scrollDirection: scrollDirection,
+        reverse: reverse,
+        controller:controller,
+        primary:primary,
+        physics:physics,
+        shrinkWrap:shrinkWrap,
+        center:center,
+        cacheExtent:cacheExtent,
+        anchor:anchor,
+        semanticChildCount:semanticChildCount,
+        dragStartBehavior:dragStartBehavior,
+        restorationId:restorationId,
+        clipBehavior:clipBehavior
+      );
+  }
+}
\ No newline at end of file

lib/xxapp_statistical.dart

+library xxstatistical;
+
+export 'src/xxstatistical.dart';
+export 'src/entity/datareport_entity.dart';
+export 'tracker/exposure_widget.dart';

pubspec.lock

+# Generated by pub
+# See https://dart.dev/tools/pub/glossary#lockfile
+packages:
+  async:
+    dependency: transitive
+    description:
+      name: async
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.8.1"
+  base_repository:
+    dependency: "direct main"
+    description:
+      path: "."
+      ref: null-safety
+      resolved-ref: "5b60d47410e4bb47d0e8f4fc8c6be00e28b2002d"
+      url: "git@git.xiaomanxiong.com:flutter-plugin/app-base-repository.git"
+    source: git
+    version: "1.0.0"
+  boolean_selector:
+    dependency: transitive
+    description:
+      name: boolean_selector
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.0"
+  characters:
+    dependency: transitive
+    description:
+      name: characters
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.0"
+  charcode:
+    dependency: transitive
+    description:
+      name: charcode
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.1"
+  clock:
+    dependency: transitive
+    description:
+      name: clock
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.0"
+  collection:
+    dependency: transitive
+    description:
+      name: collection
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.15.0"
+  dio:
+    dependency: transitive
+    description:
+      name: dio
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.0.0"
+  fake_async:
+    dependency: transitive
+    description:
+      name: fake_async
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.0"
+  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"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "4.0.0"
+  matcher:
+    dependency: transitive
+    description:
+      name: matcher
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.12.10"
+  meta:
+    dependency: transitive
+    description:
+      name: meta
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.7.0"
+  path:
+    dependency: transitive
+    description:
+      name: path
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.8.0"
+  sky_engine:
+    dependency: transitive
+    description: flutter
+    source: sdk
+    version: "0.0.99"
+  source_span:
+    dependency: transitive
+    description:
+      name: source_span
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.8.1"
+  sqflite:
+    dependency: "direct main"
+    description:
+      name: sqflite
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.0+4"
+  sqflite_common:
+    dependency: transitive
+    description:
+      name: sqflite_common
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.0.1+1"
+  stack_trace:
+    dependency: transitive
+    description:
+      name: stack_trace
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.10.0"
+  stream_channel:
+    dependency: transitive
+    description:
+      name: stream_channel
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.0"
+  string_scanner:
+    dependency: transitive
+    description:
+      name: string_scanner
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.1.0"
+  synchronized:
+    dependency: transitive
+    description:
+      name: synchronized
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.0"
+  term_glyph:
+    dependency: transitive
+    description:
+      name: term_glyph
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.0"
+  test_api:
+    dependency: transitive
+    description:
+      name: test_api
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.4.2"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.3.0"
+  vector_math:
+    dependency: transitive
+    description:
+      name: vector_math
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.0"
+sdks:
+  dart: ">=2.12.0 <3.0.0"
+  flutter: ">=1.17.0"

pubspec.yaml

+name: xxstatistical
+description: 小熊app数据上报插件库.
+version: 1.0.0
+homepage:
+
+publish_to: none
+
+environment:
+  sdk: ">=2.7.0 <3.0.0"
+  flutter: ">=1.17.0"
+
+dependencies:
+  flutter:
+    sdk: flutter
+  sqflite: ^2.0.0+4
+  base_repository:
+    git:
+        url: 'git@git.xiaomanxiong.com:flutter-plugin/app-base-repository.git'
+        ref: 'null-safety'
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
\ No newline at end of file

test/xxapp_statistical_test.dart

+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  test('adds one to input values', () {
+  });
+}