fix：增加下载网络状态判断

lib/apk_update.dart

+import 'package:apk_update/utils/dio_update_util.dart';
 import 'package:apk_update/utils/utils.dart';
-import 'package:dio/dio.dart';
 import 'package:flutter/material.dart';
 import 'apk_update_platform_interface.dart';
 
@@ -77,9 +77,8 @@ class ApkUpdate {
         debugPrint("===== installApk");
         ApkUpdatePlatform.instance.installApk(path);
       },
-      downloadApk: (String? path, String? apkPath) {
-        final dio = Dio();
-        dio
+      downloadApk: (String? path, String? apkPath) async {
+        DioUpdateUtil.getDio()
             .get("${paramsOSS?['baseUrl']}$generateByExt",
                 queryParameters: {
                   "extension": "apk",

lib/utils/connectivity_util.dart

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

lib/utils/dio_update_util.dart

+import 'package:dio/dio.dart';
+export 'package:dio/dio.dart';
+class DioUpdateUtil {
+  // dio 单例对象
+  static final Dio _dio = Dio();
+
+  static Dio getDio() {
+    return _dio;
+  }
+}

lib/utils/utils.dart

@@ -3,13 +3,13 @@ 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';
 import 'package:get/route_manager.dart';
 import 'package:url_launcher/url_launcher.dart';
 
+import 'dio_update_util.dart';
+
 // 获取版本号
 const String getSystemVersionByNumber =
     "/user-service/system/version/getSystemVersionByNumber";
@@ -44,7 +44,7 @@ void checkVersion(
   }
 
   try {
-    final Response response = await Dio().request(
+    final Response response = await DioUpdateUtil.getDio().request(
       url,
       options: Options(method: method.value, headers: header),
       queryParameters: params,

lib/widget/update_dialog.dart

 import 'dart:async';
 import 'dart:io';
 
+import 'package:apk_update/utils/connectivity_util.dart';
 import 'package:apk_update/utils/image_utils.dart';
+import 'package:apk_update/utils/toast_util.dart';
 import 'package:apk_update/utils/utils.dart';
 import 'package:dio/dio.dart';
 import 'package:flustars_flutter3/flustars_flutter3.dart';
@@ -93,11 +95,21 @@ class _UpdateDialogState extends State<UpdateDialog> {
                               children: <Widget>[
                                 _btn(
                                   title: '立即更新',
-                                  onTap: () {
+                                  onTap: () async {
                                     if (Platform.isIOS) {
                                       Navigator.pop(context);
                                       widget.jumpAppStore?.call();
                                     } else {
+                                      // 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;
+                                      }
                                       setState(() {
                                         _isDownload = true;
                                       });