Flutter应用升级插件sr_upgrade的使用

sr_upgrade 是一个用于实现 Flutter 应用升级功能的插件。它支持 Android 平台下载和升级 APK，并提供了自定义 UI 组件来显示下载进度回调。

在 AndroidManifest.xml 中添加 application 配置

在你的 AndroidManifest.xml 文件中的 <application> 标签内添加以下配置：

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="${applicationId}.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths"/>
</provider>

添加依赖

在你的 pubspec.yaml 文件中添加 sr_upgrade 依赖：

dependencies:
  sr_upgrade: ^0.0.2

然后运行 flutter pub get 来安装依赖。

使用 sr_upgrade

引入

首先，引入必要的包：

import 'package:flutter/material.dart';
import 'package:sr_upgrade/sr_upgrade.dart';

初始化应用

在 main.dart 文件中初始化应用：

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Home(),
    );
  }
}

创建主界面

在 _MyAppState 类中创建主界面组件：

class Home extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  String step = '0.00';

  // 调用升级方法
  _upgrade() {
    SrUpgrade.upgrade(
        'https://dldir1.qq.com/weixin/android/weixin806android1900_arm64.apk',
        progressCallback: (int count, int total) {
      setState(() {
        step = (count / total * 100).toStringAsFixed(2);
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('插件示例应用'),
      ),
      body: Container(
        width: double.infinity,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          crossAxisAlignment: CrossAxisAlignment.center,
          children: [
            // 检查升级按钮
            TextButton(
              onPressed: _upgrade,
              child: Container(
                width: 200,
                height: 50,
                decoration: BoxDecoration(
                    color: Colors.blue,
                    borderRadius: BorderRadius.circular(15)),
                alignment: Alignment.center,
                child: Text(
                  '检查升级',
                  style: TextStyle(color: Colors.white, fontSize: 20),
                ),
              ),
            ),
            // 显示当前下载进度
            Text('当前下载进度$step%')
          ],
        ),
      ),
    );
  }
}

解释

1. 导入必要的库：

   import 'package:flutter/material.dart';
   import 'package:sr_upgrade/sr_upgrade.dart';
   

2. 初始化应用：

   void main() {
     runApp(MyApp());
   }
   
   class MyApp extends StatefulWidget {
     @override
     _MyAppState createState() => _MyAppState();
   }
   
   class _MyAppState extends State<MyApp> {
     @override
     void initState() {
       super.initState();
     }
   
     @override
     Widget build(BuildContext context) {
       return MaterialApp(
         home: Home(),
       );
     }
   }
   

3. 创建主界面组件：

   class Home extends StatefulWidget {
     @override
     _HomeState createState() => _HomeState();
   }
   
   class _HomeState extends State<Home> {
     String step = '0.00';
   
     // 升级方法
     _upgrade() {
       SrUpgrade.upgrade(
           'https://dldir1.qq.com/weixin/android/weixin806android1900_arm64.apk',
           progressCallback: (int count, int total) {
         setState(() {
           step = (count / total * 100).toStringAsFixed(2);
         });
       });
     }
   
     @override
     Widget build(BuildContext context) {
       return Scaffold(
         appBar: AppBar(
           title: const Text('插件示例应用'),
         ),
         body: Container(
           width: double.infinity,
           child: Column(
             mainAxisAlignment: MainAxisAlignment.center,
             crossAxisAlignment: CrossAxisAlignment.center,
             children: [
               // 检查升级按钮
               TextButton(
                 onPressed: _upgrade,
                 child: Container(
                   width: 200,
                   height: 50,
                   decoration: BoxDecoration(
                       color: Colors.blue,
                       borderRadius: BorderRadius.circular(15)),
                   alignment: Alignment.center,
                   child: Text(
                     '检查升级',
                     style: TextStyle(color: Colors.white, fontSize: 20),
                   ),
                 ),
               ),
               // 显示当前下载进度
               Text('当前下载进度$step%')
             ],
           ),
         ),
       );
     }
   }