下载新版本
This commit is contained in:
GYJ
217
lib/update_version/update_version_view.dart
Normal file
217
lib/update_version/update_version_view.dart
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import 'package:cashier_reserve/common/print/print.dart';
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import 'package:cashier_reserve/data_model/version/update_version_model.dart';
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import 'package:dio/dio.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:percent_indicator/percent_indicator.dart';
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class UpdateVersionView extends StatefulWidget {
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final UpdateVersionModel versionModel;
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const UpdateVersionView({super.key, required this.versionModel});
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@override
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State<StatefulWidget> createState() {
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return _UpdateVersionViewState();
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}
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}
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class _UpdateVersionViewState extends State<UpdateVersionView> {
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DateTime? lastPopTime;
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double progress = 0;
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String progressText = "0%";
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bool isDownload = false;
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// 用于控制下载任务取消的CancelToken
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CancelToken? _cancelToken;
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@override
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void dispose() {
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_cancelToken?.cancel();
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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return PopScope(
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canPop: (widget.versionModel.isUp ?? 0) != 0,
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onPopInvokedWithResult: (didPop, result) async {
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// 点击返回键的操作
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if (lastPopTime == null ||
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DateTime.now().difference(lastPopTime!) >
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const Duration(seconds: 2)) {
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lastPopTime = DateTime.now();
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// Utils.toast('再按一次退出', context);
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} else {
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lastPopTime = DateTime.now();
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// 退出app
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await SystemChannels.platform.invokeMethod('SystemNavigator.pop');
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}
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},
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child: Scaffold(
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backgroundColor: Colors.black.withOpacity(0.2),
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body: GestureDetector(
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onTap: () {
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FocusScope.of(context).requestFocus(FocusNode());
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},
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child: Container(
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width: MediaQuery.of(context).size.width,
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height: MediaQuery.of(context).size.height,
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color: const Color(0x55000000),
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child: Center(
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child: Container(
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padding: const EdgeInsets.fromLTRB(30, 30, 30, 30),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(10),
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),
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width: 400,
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// height: 400,
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child: SingleChildScrollView(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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"发现新版本",
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style:
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TextStyle(fontSize: 22, color: Color(0xff333333)),
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),
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const SizedBox(
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height: 20,
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),
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Text(
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widget.versionModel.message ?? "",
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style: const TextStyle(
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fontSize: 16, color: Color(0xff666666)),
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),
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const SizedBox(
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height: 20,
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),
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isDownload
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? LinearPercentIndicator(
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padding: EdgeInsets.zero,
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animation: false,
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lineHeight: 20.0,
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// animationDuration: 2500,
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percent: progress,
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center: Text(progressText),
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// linearStrokeCap: LinearStrokeCap.roundAll,
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progressColor: Colors.green,
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)
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: Container(),
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isDownload
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? const SizedBox(
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height: 20,
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)
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: Container(),
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_buildActionViews(context),
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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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),
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),
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);
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}
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Widget _buildActionViews(BuildContext context) {
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bool isMustUpdate = widget.versionModel.isUp == 1;
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return Row(mainAxisAlignment: MainAxisAlignment.center, children: [
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isMustUpdate
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? Container()
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: ElevatedButton(
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onPressed: () {
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Navigator.of(context).pop();
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},
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style: ButtonStyle(
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backgroundColor: WidgetStateProperty.all(Colors.white),
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foregroundColor:
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WidgetStateProperty.all(const Color(0xff666666)),
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minimumSize: WidgetStateProperty.all(const Size(100, 40)),
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shape: WidgetStateProperty.all(const RoundedRectangleBorder(
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borderRadius: BorderRadius.all(Radius.circular(20)),
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)),
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),
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child: const Text("跳过"),
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),
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isMustUpdate
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? Container()
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: const SizedBox(
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width: 20,
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),
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ElevatedButton(
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onPressed: () {
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startDownload();
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},
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style: ButtonStyle(
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backgroundColor: WidgetStateProperty.all(Colors.blue),
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foregroundColor: WidgetStateProperty.all(Colors.white),
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minimumSize:
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WidgetStateProperty.all(Size(isMustUpdate ? 200 : 100, 40)),
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shape: WidgetStateProperty.all(const RoundedRectangleBorder(
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borderRadius: BorderRadius.all(Radius.circular(20)),
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)),
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),
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child: const Text("立即更新"),
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),
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]);
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}
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startDownload() async {
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setState(() {
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isDownload = true;
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});
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String fileUrl = widget.versionModel.url ?? "";
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if (fileUrl.isEmpty) {
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yjPrint("下载地址为空");
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return;
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}
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_cancelToken?.cancel();
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setState(() {
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progress = 0.0;
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progressText = "0.0%";
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});
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yjPrint("fileUrl: $fileUrl");
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Dio dio = Dio();
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try {
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String savePath = await getPhoneLocalPath();
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String appName = "file.apk";
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_cancelToken = CancelToken(); // 创建CancelToken对象
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await dio.download(
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fileUrl, "$savePath$appName", onReceiveProgress: (received, total) {
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if (total != -1) {
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///当前下载的百分比例
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double currentProgress = received / total;
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setState(() {
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progressText = "${(currentProgress * 100).toStringAsFixed(2)}%";
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progress = double.parse(currentProgress.toStringAsFixed(2));
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});
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yjPrint(progress);
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_cancelToken = null;
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}
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}, cancelToken: _cancelToken);
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yjPrint("文件下载成功");
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} catch (e) {
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yjPrint("文件下载失败：$e");
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}
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}
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Future<String> getPhoneLocalPath() async {
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final directory = await getExternalStorageDirectory();
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return directory?.path ?? '';
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}
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}
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