108 lines
3.9 KiB
Dart
108 lines
3.9 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:url_launcher/url_launcher.dart';
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/// 强制更新页：检测到新版本时的全屏阻塞页。
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/// PopScope 禁返回（Android 系统返回 / iOS 边缘滑动均不可退出）。
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/// 2026-09-03 改为浏览器下载：App 内 PackageInstaller 会话安装在小米等
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/// ROM 上点系统确认框后失败（下载/写入正常但最终安装被拒），而系统浏览器
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/// 下载 APK 后经通知栏走 ROM 自己的安装器可正常完成，故下载链接改由浏览器
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/// 打开，不再 App 内下载/安装。仅点「立即更新」按钮时打开浏览器，不自动
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/// 跳转；安装完成（versionName 追上服务器）后下次启动不再提示。
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class UpdateScreen extends StatefulWidget {
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final String version;
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final String url;
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final String notes;
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const UpdateScreen({
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super.key,
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required this.version,
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required this.url,
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this.notes = '',
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});
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@override
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State<UpdateScreen> createState() => _UpdateScreenState();
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}
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class _UpdateScreenState extends State<UpdateScreen> {
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String? _message;
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Future<void> _openBrowser() async {
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final uri = Uri.tryParse(widget.url);
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if (uri == null) {
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setState(() => _message = '下载链接无效，请联系管理员');
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return;
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}
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try {
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final ok = await launchUrl(uri, mode: LaunchMode.externalApplication);
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if (!mounted) return;
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setState(() {
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_message = ok ? '已打开浏览器下载，完成后点击通知栏的安装提示即可更新' : '打开浏览器失败，请点「立即更新」重试';
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});
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} catch (_) {
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if (!mounted) return;
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setState(() => _message = '打开浏览器失败，请点「立即更新」重试');
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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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final theme = Theme.of(context);
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return PopScope(
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canPop: false,
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child: Scaffold(
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body: Center(
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child: Padding(
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padding: const EdgeInsets.all(32),
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child: Column(
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mainAxisSize: MainAxisSize.min,
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children: [
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Icon(Icons.system_update_alt,
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size: 64, color: theme.colorScheme.primary),
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const SizedBox(height: 16),
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Text('发现新版本 ${widget.version}',
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style: theme.textTheme.headlineSmall),
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const SizedBox(height: 12),
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if (widget.notes.isNotEmpty)
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Text(widget.notes,
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textAlign: TextAlign.center,
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style: const TextStyle(height: 1.6)),
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const SizedBox(height: 24),
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FilledButton.icon(
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onPressed: _openBrowser,
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icon: const Icon(Icons.open_in_browser),
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label: const Text('立即更新'),
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style: FilledButton.styleFrom(
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minimumSize: const Size(200, 48),
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textStyle: const TextStyle(fontSize: 16),
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),
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),
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const SizedBox(height: 16),
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Text(
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'新版本需在浏览器下载 APK 后手动安装\n安装完成后请重新打开应用',
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textAlign: TextAlign.center,
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style: theme.textTheme.bodySmall
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?.copyWith(color: theme.colorScheme.error),
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),
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if (_message != null) ...[
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const SizedBox(height: 12),
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Text(
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_message!,
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textAlign: TextAlign.center,
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style: TextStyle(
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height: 1.5,
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color: _message!.startsWith('已打开')
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? Colors.green
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: theme.colorScheme.error,
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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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}
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