299 lines
8.6 KiB
Dart
299 lines
8.6 KiB
Dart
import 'dart:io';
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import 'package:flutter/material.dart';
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import 'package:image_picker/image_picker.dart';
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import 'package:wechat_assets_picker/wechat_assets_picker.dart';
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import 'package:photo_manager/photo_manager.dart';
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/// 媒体选择类型
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enum MediaType { image, video }
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/// 横向最多四个、可自动换行的媒体添加组件，支持拍摄和相册多选
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class MediaPickerRow extends StatefulWidget {
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final int maxCount;
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final MediaType mediaType;
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final ValueChanged<List<File>> onChanged;
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const MediaPickerRow({
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Key? key,
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this.maxCount = 4,
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this.mediaType = MediaType.image,
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required this.onChanged,
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}) : super(key: key);
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@override
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_MediaPickerRowState createState() => _MediaPickerRowState();
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}
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class _MediaPickerRowState extends State<MediaPickerRow> {
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final ImagePicker _picker = ImagePicker();
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final List<File> _files = [];
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Future<void> _showPickerOptions() async {
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showModalBottomSheet(
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context: context,
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builder:
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(_) => SafeArea(
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child: Wrap(
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children: [
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ListTile(
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leading: Icon(
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widget.mediaType == MediaType.image
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? Icons.camera_alt
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: Icons.videocam,
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),
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title: Text(
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widget.mediaType == MediaType.image ? '拍照' : '拍摄视频',
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),
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onTap: () {
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Navigator.of(context).pop();
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_pickCamera();
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},
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),
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ListTile(
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leading: Icon(
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widget.mediaType == MediaType.image
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? Icons.photo_library
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: Icons.video_library,
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),
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title: Text(
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widget.mediaType == MediaType.image ? '从相册选择' : '从相册选择视频',
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),
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onTap: () {
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Navigator.of(context).pop();
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_pickGallery();
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},
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),
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ListTile(
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leading: const Icon(Icons.close),
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title: const Text('取消'),
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onTap: () => Navigator.of(context).pop(),
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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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Future<void> _pickCamera() async {
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if (_files.length >= widget.maxCount) return;
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try {
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XFile? picked =
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widget.mediaType == MediaType.image
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? await _picker.pickImage(source: ImageSource.camera)
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: await _picker.pickVideo(source: ImageSource.camera);
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if (picked != null) {
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setState(() => _files.add(File(picked.path)));
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widget.onChanged(_files);
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}
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} catch (e) {
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debugPrint('拍摄失败: $e');
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}
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}
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Future<void> _pickGallery() async {
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if (_files.length >= widget.maxCount) return;
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final permission = await PhotoManager.requestPermissionExtend();
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if (permission != PermissionState.authorized &&
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permission != PermissionState.limited) {
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ScaffoldMessenger.of(
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context,
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).showSnackBar(const SnackBar(content: Text('请到设置中开启相册访问权限')));
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return;
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}
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try {
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final remaining = widget.maxCount - _files.length;
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final List<AssetEntity>? assets = await AssetPicker.pickAssets(
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context,
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pickerConfig: AssetPickerConfig(
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requestType:
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widget.mediaType == MediaType.image
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? RequestType.image
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: RequestType.video,
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maxAssets: remaining,
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gridCount: 4,
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),
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);
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if (assets != null) {
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for (final asset in assets) {
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if (_files.length >= widget.maxCount) break;
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final file = await asset.file;
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if (file != null) _files.add(file);
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}
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setState(() {});
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widget.onChanged(_files);
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}
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} catch (e) {
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debugPrint('相册选择失败: $e');
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}
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}
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void _removeFile(int index) {
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setState(() {
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_files.removeAt(index);
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});
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widget.onChanged(_files);
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}
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@override
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Widget build(BuildContext context) {
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// 准备所有已选媒体和“添加”按钮
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final children = <Widget>[
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for (int i = 0; i < _files.length; i++) _buildMediaItem(i),
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if (_files.length < widget.maxCount) _buildAddButton(),
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];
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: 10),
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child: Wrap(
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spacing: 8, // 横向间距
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runSpacing: 8, // 纵向行距
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children: children,
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),
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);
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}
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Widget _buildMediaItem(int index) {
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return Stack(
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clipBehavior: Clip.none, // 允许子项溢出到父级之外
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children: [
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ClipRRect(
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borderRadius: BorderRadius.circular(5),
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child: widget.mediaType == MediaType.image
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? Image.file(
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_files[index],
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width: 80,
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height: 80,
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fit: BoxFit.cover,
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)
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: Container(
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width: 80,
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height: 80,
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color: Colors.black12,
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child: const Center(
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child: Icon(Icons.videocam, color: Colors.white70),
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),
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),
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),
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Positioned(
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top: 0, // 负值让图标一半溢出
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right: 0,
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child: GestureDetector(
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onTap: () => _removeFile(index),
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child: Image.asset(
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"assets/images/close.png",
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width: 24,
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height: 24,
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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 _buildAddButton() {
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return GestureDetector(
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onTap: _showPickerOptions,
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child: Container(
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width: 80,
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height: 80,
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decoration: BoxDecoration(
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border: Border.all(color: Colors.black12),
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borderRadius: BorderRadius.circular(5),
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),
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child: Center(
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child: Icon(
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widget.mediaType == MediaType.image
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? Icons.camera_alt
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: Icons.videocam,
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color: Colors.black26,
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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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/// 整改后照片上传区域组件
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class RepairedPhotoSection extends StatelessWidget {
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final int maxCount;
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final MediaType mediaType;
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final String title;
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final ValueChanged<List<File>> onChanged;
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final VoidCallback onAiIdentify;
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final bool isShowAI;
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final double horizontalPadding;
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const RepairedPhotoSection({
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Key? key,
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this.maxCount = 4,
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this.mediaType = MediaType.image,
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required this.title,
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this.isShowAI = false,
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required this.onChanged,
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required this.onAiIdentify,
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this.horizontalPadding = 10,
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}) : super(key: key);
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@override
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Widget build(BuildContext context) {
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return Container(
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color: Colors.white,
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padding: const EdgeInsets.only(left: 5, right: 10),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 标题
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Padding(
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padding: EdgeInsets.symmetric(horizontal: horizontalPadding),
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child: Text(
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title,
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style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
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),
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),
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const SizedBox(height: 8),
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// 媒体行
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MediaPickerRow(
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maxCount: maxCount,
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mediaType: mediaType,
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onChanged: onChanged,
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),
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if (isShowAI)
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Padding(
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padding: const EdgeInsets.only(top: 20),
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child: Stack(
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children: [
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GestureDetector(
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onTap: onAiIdentify,
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child: Container(
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width: double.infinity,
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// 让它撑满宽度，以便定位
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height: 36,
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decoration: BoxDecoration(
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color: const Color(0xFFDFEAFF),
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borderRadius: BorderRadius.circular(18),
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),
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alignment: Alignment.centerLeft,
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padding: const EdgeInsets.symmetric(horizontal: 15),
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child: const Text('AI隐患识别与处理'),
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),
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),
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// 这个 Positioned 会把图紧贴右上角
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Positioned(
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top: 0,
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right: 0,
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child: Image.asset(
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'assets/images/ai_img.png',
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width: 20,
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height: 20,
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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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