controller.dart
4.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
/*
* @Author: 卢靖康
* @Date: 2024-04-24 18:50:26
* @LastEditTime: 2024-05-06 15:21:58
* @LastEditors: 卢靖康
*/
import 'dart:convert';
import 'dart:io';
import 'package:archive/archive.dart';
import 'package:archive/archive_io.dart';
import 'package:dio/dio.dart';
import 'package:get/get.dart';
import 'package:path_provider/path_provider.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'model.dart';
class DownloadController extends GetxController {
DownloadController();
List<DownloadItemModel> downloadFileList = [
DownloadItemModel(
id: 1,
name: "地图1",
path: 'http://seaworldmap.shleads.com/dist.zip',
fileName: 'dist.zip',
isDownload: false,
progress: 0.0,
savePath: '',
zipFiles: []),
];
_initData() async {
update(["download"]);
}
handleDownload(item) async {
if (item.isDownload) {
return;
} else {
Get.snackbar('提示', '正在下载');
}
Directory dir = await localfileDir();
String path = dir.path;
String fileName = item.fileName;
String saveDirectoryPath = "$path/download/$fileName";
print(saveDirectoryPath);
Dio dio = Dio();
try {
dio.download(item.path, saveDirectoryPath,
onReceiveProgress: (count, total) {
downloadProgressCallBack(
count, total, item.id.toString(), saveDirectoryPath);
});
} catch (e) {
print(e);
}
}
void downloadProgressCallBack(
count,
total,
String id,
String filePath,
) {
downloadFileList
.firstWhere((element) => element.id == int.parse(id))
.progress = count / total;
update(["download"]);
if (count == total) {
downloadFileList
.firstWhere((element) => element.id == int.parse(id))
.isDownload = true;
update(["download"]);
if (filePath.endsWith('zip')) {
unzipFiles(filePath, id);
}
}
}
Future<Directory> localfileDir() async {
Directory? tempDir;
if (GetPlatform.isAndroid) {
tempDir = await getApplicationDocumentsDirectory();
} else {
tempDir = await getLibraryDirectory();
}
return tempDir;
}
Future unzipFiles(url, String id) async {
// 获取到文件路径
var dir = await localfileDir();
String documentPath = dir.path;
// 拿到文件的存储路径
String savePath = "$documentPath/download/map";
// 从磁盘读取zip文件
List<int> bytes = File(url).readAsBytesSync();
try {
Archive archive = ZipDecoder().decodeBytes(bytes);
List<String> pathFiles = [];
// 将解码的文件解压缩到磁盘
for (ArchiveFile file in archive) {
if (file.isFile) {
List<int> tempData = file.content;
File f = File("$savePath/${file.name}")
..createSync(recursive: true)
..writeAsBytesSync(tempData);
if (!f.path.contains('MACOSX')) {
String clipFile = f.path.substring(dir.path.length);
// myLog(f.path)；
pathFiles.add(clipFile);
}
} else {
Directory("$savePath/${file.name}").create(recursive: true);
}
}
saveDownloadListToCache();
File(url).delete();
} catch (e) {
print(e);
}
}
// 保存下载列表到本地缓存
Future<void> saveDownloadListToCache() async {
final prefs = await SharedPreferences.getInstance();
String listJson =
jsonEncode(downloadFileList.map((e) => e.toJson()).toList());
await prefs.setString('download_file_list', listJson);
}
// 从本地缓存读取下载列表
Future<List<DownloadItemModel>> loadDownloadListFromCache() async {
final prefs = await SharedPreferences.getInstance();
String? listJson = prefs.getString('download_file_list');
print(listJson);
List<dynamic> tempList = jsonDecode(listJson!);
return tempList.map((e) => DownloadItemModel.fromJson(e)).toList();
}
@override
Future<void> onInit() async {
await loadDownloadListFromCache().then((value) {
downloadFileList = value;
});
super.onInit();
}
@override
void onReady() {
super.onReady();
_initData();
}
// @override
// void onClose() {
// super.onClose();
// }
}