feat:增加异常网络情况处理

android/src/main/kotlin/com/clx/apk_update/ApkUpdatePlugin.kt

@@ -148,6 +148,19 @@ class ApkUpdatePlugin : FlutterPlugin, MethodCallHandler, EventChannel.StreamHan
         openFile(path)
     }
 
+    override fun onFailed() {
+        mActivity?.runOnUiThread {
+            mEventSink?.success(
+                mapOf(
+                    "currentSize" to 1,
+                    "totalSize" to 1,
+                    "isDownloadSuccess" to "0"
+                )
+            )
+
+        }
+    }
+
     override fun onAttachedToActivity(binding: ActivityPluginBinding) {
         mActivity = binding.activity
     }

android/src/main/kotlin/com/clx/apk_update/DownloadApp.kt

@@ -65,6 +65,7 @@ object DownloadAppUtil {
                     clientException: ClientException?,
                     serviceException: ServiceException?
                 ) {
+                    progressCallback.onFailed()
                     // 请求异常。
                     clientException?.printStackTrace()
                     if (serviceException != null) {

android/src/main/kotlin/com/clx/apk_update/ProgressCallback.kt

@@ -6,4 +6,6 @@ interface ProgressCallback {
 
     fun  success(path:String)
 
+    fun onFailed()
+
 }
\ No newline at end of file

lib/utils/connectivity_util.dart

+
+
+import 'package:connectivity_plus/connectivity_plus.dart';
+
+final Connectivity connectivity = Connectivity();
\ No newline at end of file

lib/utils/utils.dart

 import 'dart:convert';
 
+import 'package:apk_update/utils/connectivity_util.dart';
 import 'package:apk_update/utils/toast_util.dart';
 import 'package:apk_update/widget/update_dialog.dart';
+import 'package:connectivity_plus/connectivity_plus.dart';
 import 'package:dio/dio.dart';
 import 'package:flustars_flutter3/flustars_flutter3.dart';
 import 'package:flutter/material.dart';
@@ -30,9 +32,17 @@ void checkVersion(
     Function()? jumpAppStore, // 跳转AppStore
     Function(String? path)? installApk, // 安装Apk
     Function()? downloadApkError, // 下载Apk错误
-    Function(String? path,String? apkPath)? downloadApk, // 使用OSS下载Apk
+    Function(String? path, String? apkPath)? downloadApk, // 使用OSS下载Apk
     int? isOssDownload //1 使用OSS下载
     }) async {
+  // 判断网络是否连接
+  var resList = await connectivity.checkConnectivity();
+
+  if (resList.isNotEmpty && resList[0] == ConnectivityResult.none) {
+    ToastUtil.showToast("网络异常,请检查网络");
+    return;
+  }
+
   try {
     final Response response = await Dio().request(
       url,

lib/widget/update_dialog.dart

@@ -18,7 +18,7 @@ class UpdateDialog extends StatefulWidget {
   final Function()? jumpAppStore; // 跳转AppStore
   final Function(String? path)? installApk; // 安装Apk
   final int? isOssDownload; //1 使用OSS下载
-  final Function(String? path,String? apkPath)? downloadApk; // 使用OSS下载Apk
+  final Function(String? path, String? apkPath)? downloadApk; // 使用OSS下载Apk
   final Function()? downloadApkError; // 下载Apk错误
 
   const UpdateDialog({
@@ -229,6 +229,14 @@ class _UpdateDialogState extends State<UpdateDialog> {
           var count = event['currentSize'] as num;
           var total = event['totalSize'] as num;
           var isDownloadSuccess = event['isDownloadSuccess'] == "1";
+          var isDownloadFailed = event['isDownloadSuccess'] == "0";
+
+          if (isDownloadFailed) {
+            _isDownload = false;
+            setState(() {});
+            return;
+          }
+
           _value = count / total;
           if (isDownloadSuccess) {
             _isDownload = false;

pubspec.yaml

@@ -23,6 +23,8 @@ dependencies:
   flutter_widget_from_html_core: ^0.10.0
   # https://pub.dev/packages/url_launcher
   url_launcher: ^6.1.2
+    #网络连接工具
+  connectivity_plus: ^6.1.0 
 
 dev_dependencies:
   flutter_test: