1.增加文件保存到相册的工具类

lib/util/download/download.dart

@@ -0,0 +1,53 @@
+import 'dart:collection';
+
+import 'package:dio/dio.dart';
+import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+import 'package:image_gallery_saver/image_gallery_saver.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:permission_handler/permission_handler.dart';
+
+class Download {
+  static HashMap hashMap = HashMap();
+
+  Future<String> fileToGallery(
+    String url, {
+    String postfix,
+    Function(int, int) progress,
+  }) async {
+    // 检查是否已有读写内存的权限
+    bool status = await Permission.storage.isGranted;
+
+    //判断如果还没拥有读写权限就申请获取权限
+    if (status || await Permission.storage.request().isGranted) {
+      if (hashMap.containsKey(url)) {
+        return "正在下载";
+      } else {
+        hashMap[url] = false;
+      }
+      try {
+        var strs = url.split('.');
+        if (strs.length < 0) {
+          return "文件链接错误";
+        }
+        var appDocDir = await getTemporaryDirectory();
+        String savePath = appDocDir.path + "/" + DateTime.now().toIso8601String().toString() + (strs[strs.length - 1].length > 4 ? (postfix ?? "") : strs[strs.length - 1]);
+        await Dio().download(url, savePath, onReceiveProgress: (count, toal) {
+          if(progress!=null){
+            progress(count, toal);
+          }
+        });
+        print(savePath);
+        final result = await ImageGallerySaver.saveFile(savePath);
+        print(result);
+        return "保存成功";
+      } catch (e) {
+        return "下载失败,原因:" + e.toString();
+      } finally {
+        hashMap.remove(url);
+      }
+    } else {
+      return "请前往系统设置开启应用的内存读取权限再尝试";
+    }
+  }
+}

lib/util/net_util.dart

@@ -55,7 +55,7 @@ class NetUtil {
     if (_dio == null) {
       var setting = await NativeUtil.getSetting();
       String domain = setting['domain']; //'http://www.hairuyi.com/';
-      _config(domain, proxyUrl: '192.168.0.66:8866');
+      _config(domain, proxyUrl: '192.168.0.102:8866');
     }
     return _dio;
   }

lib/zhiying_comm.dart

@@ -36,4 +36,5 @@ export 'package:cached_network_image/cached_network_image.dart';
 export 'util/photo_preview/photo_preview.dart';
 export 'models/base/base_change_notifier.dart';
 export 'util/parse_util.dart';
+export 'util/download/Download.dart';
 

pubspec.yaml

@@ -61,6 +61,17 @@ dependencies:
 #  fluwx_no_pay: 2.3.1
   # loading 动画
   loading_indicator: ^1.2.0
+  #权限授权
+  permission_handler:
+    git:
+      url: 'http://192.168.0.138:3000/FnuoOS_Flutter_Components/permission_handler.git'
+      ref: '0.0.1'
+  #文件夹路径管理
+  path_provider: ^1.4.0
+
+  #保存文件到相册
+  image_gallery_saver: ^1.5.0
+
 
 
 dev_dependencies: