flutter 安卓 版本升级

需要改的地方

1.android\app\src\main\AndroidManifest.xml里添加 android:versionCode="1" android:versionName="1.0.0"

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.abc.meshapp" android:versionCode="1" android:versionName="1.0.0">

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2.pubspec.yaml里的version 此处版本号需和上方相同

version: 1.0.0+1

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升级代码 AppVersion.dart

import 'dart:io';

import 'package:dio/adapter.dart';
import 'package:flutter/material.dart';
import 'package:package_info/package_info.dart';
import 'package:bruno/bruno.dart';
import 'package:http_parser/http_parser.dart';
import 'package:dio/dio.dart';
import 'package:open_file/open_file.dart';
import 'package:path_provider/path_provider.dart';
import 'package:permission_handler/permission_handler.dart';

// ignore: slash_for_doc_comments
/**  
 * App版本升级
 * package_info 检测版本号 https://pub.dev/packages/package_info  package_info: ^2.0.2
 * path_provider 获取文件存储路径 https://pub.dev/packages/path_provider  path_provider: ^2.0.11
 * Dio 下载文件 https://pub.dev/packages/dio  dio: ^4.0.6
 * open_file 打开文件插件 https://pub.dev/packages/open_file  open_file: ^3.2.1
 * permission_handler 检测 Apk 是否拥有权限 https://pub.dev/packages/permission_handler permission_handler: ^10.2.0
 *
 */

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

  @override
  State<AppVersionPage> createState() => _AppVersionPageState();
}

class _AppVersionPageState extends State<AppVersionPage> {
  late String _progressValue = "";

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    //获取版本号
    _getPackageInfo();

    //获取路径
    _getAppPath();
  }

  _getPackageInfo() async {
    PackageInfo packageInfo = await PackageInfo.fromPlatform();
    String appName = packageInfo.appName;
    String packageName = packageInfo.packageName;
    String version = packageInfo.version;
    String buildNumber = packageInfo.buildNumber;

    print('0000000000000000000000');
    print('appName:$appName');
    print('packageName:$packageName');
    print('varsion:$version');
    print('buildNumber:$buildNumber');
    print('0000000000000000000000');
  }

  _getAppPath() async {
    Directory tempDir = await getTemporaryDirectory();
    String tempPath = tempDir.path;

    Directory appDocDir = await getApplicationDocumentsDirectory();
    String appDocPath = appDocDir.path;
    print('tempPath:$tempPath');
    print('appDocPath:$appDocPath');
  }

  //检查权限
  Future<bool> _checkPermission() async {
    if (Theme.of(context).platform == TargetPlatform.android) {
      final status = await Permission.storage.status;
      if (status != PermissionStatus.granted) {
        final result = await Permission.storage.request();
        if (result == PermissionStatus.granted) {
          return true;
        }
      } else {
        return true;
      }
    }
    return false;
  }

  _downLoadApp() async {
    // BrnToast.show('4545', context);
    var permission = await _checkPermission();
    if (permission) {
      Directory? directory = await getExternalStorageDirectory();
      String? _localPath;
      //注意Flutter2.2以后的版本加入了Null safety
      if (directory != null) {
        _localPath = directory.path;

        String appName = "aaa.apk";
        String savePath = "$_localPath/$appName";
        String apkUrl = "https://192.168.33.250:8001/app-release.apk";

        ///参数一 文件的网络储存URL
        ///参数二 下载的本地目录文件
        ///参数三 下载监听
        Dio dio = Dio();

        (dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
            (client) {
          client.badCertificateCallback = (cert, host, port) {
            return true;
          };
        };
        await dio.download(apkUrl, savePath,
            onReceiveProgress: (received, total) {
          if (total != -1) {
            ///当前下载的百分比例
            print((received / total * 100).toStringAsFixed(0) + "%");
            setState(() {
              _progressValue =
                  "${(received / total * 100).toStringAsFixed(0)}%";
            });
          }
        });
        print(savePath);
        await OpenFile.open(savePath,
            type: "application/vnd.android.package-archive");
      } else {
        print("获取目录失败");
      }
    } else {
      print("没有权限");
    }
  }

  Widget build(BuildContext context) {
    return Container(
      // width: 120,
      margin: const EdgeInsets.all(30),
      child: BrnBigGhostButton(
        title: '第八升级版本$_progressValue',
        onTap: _downLoadApp,
      ),
    );
  }
}