如何创建StreamBuilder<UserModel>实例

import 'package:flutter/material.dart';
import 'your_user_model_file.dart';

StreamBuilder<UserModel>(
  stream: yourStream, // 替换为你的数据流
  builder: (BuildContext context, AsyncSnapshot<UserModel> snapshot) {
    if (snapshot.hasData) {
      // 数据可用时的处理逻辑
      UserModel user = snapshot.data;
      return Text(user.name); // 替换为你的UI组件
    } else if (snapshot.hasError) {
      // 数据获取出错时的处理逻辑
      return Text('Error: ${snapshot.error}');
    } else {
      // 数据尚未加载完成时的处理逻辑
      return CircularProgressIndicator();
    }
  },
)

@override
Widget build(BuildContext context) {
  return Scaffold(
    appBar: AppBar(
      title: Text('StreamBuilder Example'),
    ),
    body: StreamBuilder<UserModel>(
      stream: yourStream, // 替换为你的数据流
      builder: (BuildContext context, AsyncSnapshot<UserModel> snapshot) {
        // 根据数据状态返回不同的UI
        if (snapshot.hasData) {
          UserModel user = snapshot.data;
          return Text(user.name); // 替换为你的UI组件
        } else if (snapshot.hasError) {
          return Text('Error: ${snapshot.error}');
        } else {
          return CircularProgressIndicator();
        }
      },
    ),
  );
}