新增静态演示界面
This commit is contained in:
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import 'package:flutter/material.dart';
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import 'package:patbond_flutter/core/theme/app_theme.dart';
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import 'package:patbond_flutter/data/demo_data.dart';
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import 'package:patbond_flutter/models/models.dart';
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import 'package:patbond_flutter/state/app_state.dart';
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import 'package:patbond_flutter/widgets/common.dart';
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class PostDetailPage extends StatefulWidget {
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const PostDetailPage({
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required this.appState,
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required this.postId,
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super.key,
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});
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final AppState appState;
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final String postId;
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@override
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State<PostDetailPage> createState() => _PostDetailPageState();
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}
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class _PostDetailPageState extends State<PostDetailPage> {
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final commentController = TextEditingController();
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bool isFollowing = false;
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@override
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void dispose() {
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commentController.dispose();
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super.dispose();
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}
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PostModel get post =>
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widget.appState.posts.firstWhere((item) => item.id == widget.postId);
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void toggleLike() {
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final current = post;
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widget.appState.updatePost(
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current.copyWith(
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hasLiked: !current.hasLiked,
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likes: current.hasLiked ? current.likes - 1 : current.likes + 1,
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),
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);
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}
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void sendComment() {
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final text = commentController.text.trim();
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if (text.isEmpty) return;
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final current = post;
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final comment = CommentModel(
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id: 'comment_${DateTime.now().millisecondsSinceEpoch}',
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authorName: '萌宠新手',
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authorAvatar: userAvatar,
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content: text,
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time: '刚刚',
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);
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widget.appState.updatePost(
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current.copyWith(comments: [comment, ...current.comments]),
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);
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commentController.clear();
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FocusScope.of(context).unfocus();
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}
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@override
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Widget build(BuildContext context) {
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return AnimatedBuilder(
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animation: widget.appState,
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builder: (context, _) {
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final current = post;
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return Scaffold(
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appBar: AppBar(
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title: const Text(
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'社区动态',
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style: TextStyle(fontSize: 16, fontWeight: FontWeight.w800),
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),
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centerTitle: true,
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actions: [
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IconButton(
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tooltip: '分享',
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onPressed: () => ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('分享链接已准备好（演示）'))),
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icon: const Icon(Icons.ios_share_outlined),
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),
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],
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),
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body: ListView(
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padding: const EdgeInsets.only(bottom: 100),
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children: [
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AspectRatio(
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aspectRatio: 1,
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child: RemoteImage(url: current.mainImage),
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),
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Padding(
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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SectionCard(
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child: Row(
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children: [
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RemoteImage(
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url: current.authorAvatar,
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width: 48,
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height: 48,
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borderRadius: BorderRadius.circular(24),
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),
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const SizedBox(width: 12),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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current.authorName,
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style: Theme.of(
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context,
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).textTheme.titleMedium,
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),
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Text(
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current.breedTag,
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style: Theme.of(context).textTheme.bodySmall,
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),
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],
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),
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),
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FilledButton.tonal(
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onPressed: () =>
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setState(() => isFollowing = !isFollowing),
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child: Text(isFollowing ? '已关注' : '关注'),
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),
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],
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),
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),
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const SizedBox(height: 14),
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SectionCard(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(current.content),
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const SizedBox(height: 14),
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Wrap(
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spacing: 8,
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runSpacing: 8,
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children: current.tags
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.map((tag) => TagPill('#$tag'))
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.toList(),
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),
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const SizedBox(height: 12),
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Text(
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'发布于 ${current.time}',
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style: Theme.of(context).textTheme.bodySmall,
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),
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],
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),
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),
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const SizedBox(height: 14),
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Row(
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children: [
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FilledButton.tonalIcon(
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onPressed: toggleLike,
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icon: Icon(
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current.hasLiked
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? Icons.favorite
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: Icons.favorite_border,
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color: current.hasLiked ? Colors.red : null,
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),
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label: Text('${current.likes}'),
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),
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const SizedBox(width: 10),
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FilledButton.tonalIcon(
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onPressed: () {},
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icon: const Icon(Icons.chat_bubble_outline),
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label: Text('${current.comments.length}'),
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),
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const Spacer(),
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IconButton.filledTonal(
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onPressed: () => widget.appState.updatePost(
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current.copyWith(
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hasBookmarked: !current.hasBookmarked,
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),
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),
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icon: Icon(
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current.hasBookmarked
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? Icons.bookmark
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: Icons.bookmark_border,
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color: current.hasBookmarked
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? AppColors.primary
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: null,
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),
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),
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],
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),
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const SizedBox(height: 22),
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Text(
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'评论 (${current.comments.length})',
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style: Theme.of(context).textTheme.titleLarge,
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),
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const SizedBox(height: 12),
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...current.comments.map(
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(comment) => Padding(
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padding: const EdgeInsets.only(bottom: 12),
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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RemoteImage(
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url: comment.authorAvatar,
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width: 36,
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height: 36,
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borderRadius: BorderRadius.circular(18),
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),
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const SizedBox(width: 10),
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Expanded(
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child: SectionCard(
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padding: const EdgeInsets.all(14),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Text(
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comment.authorName,
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style: const TextStyle(
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fontWeight: FontWeight.w700,
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),
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),
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const SizedBox(height: 4),
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Text(comment.content),
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const SizedBox(height: 5),
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Text(
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comment.time,
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style: Theme.of(
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context,
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).textTheme.bodySmall,
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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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),
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],
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),
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bottomSheet: SafeArea(
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top: false,
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child: Container(
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color: Colors.white,
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padding: const EdgeInsets.fromLTRB(12, 10, 12, 10),
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child: Row(
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children: [
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Expanded(
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child: TextField(
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controller: commentController,
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textInputAction: TextInputAction.send,
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onSubmitted: (_) => sendComment(),
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decoration: const InputDecoration(
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hintText: '写下你的评论…',
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isDense: true,
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),
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),
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),
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const SizedBox(width: 8),
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IconButton.filled(
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tooltip: '发送评论',
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onPressed: sendComment,
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icon: const Icon(Icons.send_rounded),
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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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