110 lines
4.6 KiB
Dart
110 lines
4.6 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:pikapika/basic/Common.dart';
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import 'package:pikapika/basic/Method.dart';
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import 'package:pikapika/screens/components/ContentBuilder.dart';
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import 'package:pikapika/screens/components/ContentLoading.dart';
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// 数据迁移页面
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class MigrateScreen extends StatefulWidget {
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@override
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State<StatefulWidget> createState() => _MigrateScreenState();
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}
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class _MigrateScreenState extends State<MigrateScreen> {
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late Future _future = _load();
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late String _current;
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late List<String> paths;
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String _message = "";
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int _migrate = 0; // 0 没有开始迁移，1 正在迁移，2 迁移成功，3 迁移失败
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Future _load() async {
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await method.setDownloadRunning(false);
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_current = await method.dataLocal();
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if (Platform.isAndroid) {
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paths = await method.androidGetExtendDirs();
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}
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text('数据迁移'),
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),
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body: ContentBuilder(
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future: _future,
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onRefresh: () async {},
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successBuilder:
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(BuildContext context, AsyncSnapshot<dynamic> snapshot) {
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switch (_migrate) {
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case 0:
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return ListView(
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children: [
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Container(
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padding: EdgeInsets.all(10),
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child: Text(
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"1. 为了手机数据存储空间不足, 且具有内存卡的安卓手机设计, 可将数据迁移到内存卡上。\n\n"
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"2. 您在迁移之前, 请确保您的下载处于暂停状态, 或下载均已完成, 以保证您的数据完整性。\n\n"
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"3. 如果迁移中断, 迁移失败, 或其他原因导致程序无法启动, 图片失效等问题, 您可在程序管理中清除本应用程序的数据, 以回复正常使用。\n\n"
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"4. 如果您将数据迁移后将内存卡取出, 将会使用默认本地存储, 再次插入同一张内存卡会继续使用该储存卡, 不支持更换内存卡, 途中您若再次迁移会发生数据覆盖, 这必然会丢失一部分数据.\n\n"
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"5. 您不能更改, 删除, 移动这些数据, 否则程序可能不能正常执行\n\n"
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"6. 迁移成功之前一定不要退出应用程序, 也不要按返回键\n\n"
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"7. 如果您已经了解此功能, 悉知文件迁移的风险, 可以在下面的按钮中选择一项执行\n\n",
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),
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),
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Container(
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padding: EdgeInsets.all(10),
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child: Text("当前文件储存路径 : $_current"),
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),
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...paths.map((e) => Container(
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padding: EdgeInsets.all(10),
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child: MaterialButton(
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color: Theme.of(context).accentColor,
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textColor: Theme.of(context)
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.accentTextTheme
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.subtitle1
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?.color,
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padding: EdgeInsets.all(10),
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onPressed: () async {
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if (!await confirmDialog(context, "文件迁移",
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"您将要迁移到$e, 迁移过程中一定《 不 要 关 闭 程 序 》")) {
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return;
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}
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setState(() {
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_migrate = 1;
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});
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try {
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await method.migrate(e);
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setState(() {
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_migrate = 2;
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});
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} catch (ex, tr) {
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_message = "$ex\n$tr\n";
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setState(() {
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_migrate = 3;
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});
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}
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},
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child: Text("迁移到 $e"),
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),
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)),
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],
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);
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case 1:
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return ContentLoading(label: "迁移中");
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case 2:
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return Center(child: Text("迁移成功 您需要关闭应用程序重新启动"));
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case 3:
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return Center(child: Text("迁移失败\n$_message"));
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default:
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throw "";
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}
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},
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),
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);
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}
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}
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