Flutter应用商店检测插件flutter_appstore_detection的使用

Flutter应用商店检测插件flutter_appstore_detection的使用

flutter_appstore_detection 是一个用于iOS平台的Flutter插件项目。你可以用它来判断你的应用是否可能是从App Store安装的，并获取应用在App Store上的版本。

开始使用

这个项目是一个起点，用于创建一个Flutter插件包。这种包包含了Android和/或iOS平台特定的实现代码。

对于Flutter开发的帮助，你可以查看官方文档，其中包含教程、示例、移动开发指南以及完整的API引用。

示例代码

以下是使用 flutter_appstore_detection 插件的基本示例代码：

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_appstore_detection/flutter_appstore_detection.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  final _flutterAppstoreDetectionPlugin = FlutterAppstoreDetection();
  bool _didProbablyInstallFromAppStore = true;
  String _latestAppVersionOnAppStore = "0.0.0";

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  // 异步方法初始化平台状态
  Future<void> initPlatformState() async {
    String platformVersion;
    bool didProbablyInstallFromAppStore = false;
    String latestAppVersionOnAppStore = "0.0.0";

    // 使用try/catch处理可能抛出的PlatformException
    try {
      platformVersion = await _flutterAppstoreDetectionPlugin.getPlatformVersion() ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }
    
    try {
      didProbablyInstallFromAppStore = await _flutterAppstoreDetectionPlugin.didProbablyInstallFromAppStore() ?? true;
    } on PlatformException {
      platformVersion = 'Failed to get did install from AppStore.';
    }

    latestAppVersionOnAppStore = await _flutterAppstoreDetectionPlugin.fetchLatestAppVersionOnAppStore("your_appId") ?? '0.0.0';

    // 如果组件在异步平台消息完成之前被移除，则不调用setState
    if (!mounted) return;

    // 更新UI状态
    setState(() {
      _platformVersion = platformVersion;
      _didProbablyInstallFromAppStore = didProbablyInstallFromAppStore;
      _latestAppVersionOnAppStore = latestAppVersionOnAppStore;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('插件示例应用'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text('是否可能是从App Store安装: $_didProbablyInstallFromAppStore\n'),
              Text('App Store上的应用版本: $_latestAppVersionOnAppStore\n'),
              Text('运行在: $_platformVersion\n'),
            ],
          ),
        ),
      ),
    );
  }
}

说明

1. 导入必要的库：

   import 'dart:async';
   import 'package:flutter/material.dart';
   import 'package:flutter/services.dart';
   import 'package:flutter_appstore_detection/flutter_appstore_detection.dart';
   

2. 初始化状态：

   [@override](/user/override)
   void initState() {
     super.initState();
     initPlatformState();
   }
   

3. 异步初始化方法：

   Future<void> initPlatformState() async {
     String platformVersion;
     bool didProbablyInstallFromAppStore = false;
     String latestAppVersionOnAppStore = "0.0.0";
   
     try {
       platformVersion = await _flutterAppstoreDetectionPlugin.getPlatformVersion() ?? 'Unknown platform version';
     } on PlatformException {
       platformVersion = 'Failed to get platform version.';
     }
   
     try {
       didProbablyInstallFromAppStore = await _flutterAppstoreDetectionPlugin.didProbablyInstallFromAppStore() ?? true;
     } on PlatformException {
       platformVersion = 'Failed to get did install from AppStore.';
     }
   
     latestAppVersionOnAppStore = await _flutterAppstoreDetectionPlugin.fetchLatestAppVersionOnAppStore("your_appId") ?? '0.0.0';
   
     if (!mounted) return;
   
     setState(() {
       _platformVersion = platformVersion;
       _didProbablyInstallFromAppStore = didProbablyInstallFromAppStore;
       _latestAppVersionOnAppStore = latestAppVersionOnAppStore;
     });
   }
   

4. 构建UI：

   [@override](/user/override)
   Widget build(BuildContext context) {
     return MaterialApp(
       home: Scaffold(
         appBar: AppBar(
           title: const Text('插件示例应用'),
         ),
         body: Center(
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
               Text('是否可能是从App Store安装: $_didProbablyInstallFromAppStore\n'),
               Text('App Store上的应用版本: $_latestAppVersionOnAppStore\n'),
               Text('运行在: $_platformVersion\n'),
             ],
           ),
         ),
       ),
     );
   }