Displaying Dynamic Application Data in Flutter

Displaying dynamic application data means taking information stored in lists, objects, APIs, databases, or other data sources and converting that information into Flutter widgets at runtime. Instead of hard-coding every UI element, the application generates the interface from the available data.

This approach is essential for real-world Flutter applications such as e-commerce apps, social media apps, news apps, chat applications, dashboards, student management systems, and task management apps.

1. What Is Dynamic Application Data?

Dynamic application data is information that can change while an application is running. Examples include:

• User profiles
• Product information
• Shopping cart items
• Messages
• News articles
• Orders
• Student records
• Notifications
• API responses
• Database records

For example, instead of creating three product cards manually, an application can store products in a list and generate a product card for every item in that list.

2. Static Data vs Dynamic Data

Static Data

Static data is directly written inside the UI code.

Column(
  children: [
    const Text('Laptop'),
    const Text('Mobile'),
    const Text('Tablet'),
  ],
)

This approach can work for very small fixed interfaces, but it becomes difficult to maintain when the number of records increases.

Dynamic Data

With dynamic data, information is stored separately and the UI is generated from that data.

final products = [
  'Laptop',
  'Mobile',
  'Tablet',
];

Column(
  children: products.map((product) {
    return Text(product);
  }).toList(),
)

3. Basic Dynamic Data Using a List

Dart Lists are commonly used to hold multiple pieces of application data.

final users = [
  'Rahul',
  'Priya',
  'Amit',
  'Neha',
];

The data can then be displayed dynamically.

Column(
  children: users.map((user) {
    return Text(user);
  }).toList(),
)

4. Displaying Dynamic Data with ListView

Flutter provides ListView for displaying scrollable lists. It is useful when the application needs to display multiple records vertically.

final cities = [
  'Mumbai',
  'Delhi',
  'Pune',
  'Bengaluru',
];

ListView(
  children: cities.map((city) {
    return ListTile(
      leading: const Icon(Icons.location_city),
      title: Text(city),
    );
  }).toList(),
)

For small lists, a normal ListView can be convenient. For large or dynamically generated lists, ListView.builder is generally more appropriate because it builds list items as they become needed during scrolling. :contentReference[oaicite:0]{index=0}

5. Displaying Dynamic Data with ListView.builder

ListView.builder is one of the most important widgets for displaying dynamic application data.

final users = [
  'Rahul',
  'Priya',
  'Amit',
  'Neha',
];

ListView.builder(
  itemCount: users.length,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(users[index]),
    );
  },
)

Important Properties

• itemCount: Defines the number of items to display.
• itemBuilder: Builds the widget for each item.
• index: Represents the current position in the data list.

6. Understanding the index

The index tells Flutter which item from the list is currently being displayed.

final products = [
  'Laptop',
  'Mobile',
  'Tablet',
];

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    return Text(products[index]);
  },
)

The indexes are:

• 0 → Laptop
• 1 → Mobile
• 2 → Tablet

7. Dynamic Data Using Model Classes

In real applications, data usually contains multiple properties. Instead of storing only strings, create a model class.

class Product {
  final String name;
  final double price;
  final String category;

  Product({
    required this.name,
    required this.price,
    required this.category,
  });
}

Create a list of products:

final products = [
  Product(
    name: 'Laptop',
    price: 65000,
    category: 'Electronics',
  ),
  Product(
    name: 'Smartphone',
    price: 30000,
    category: 'Electronics',
  ),
  Product(
    name: 'Headphones',
    price: 2500,
    category: 'Accessories',
  ),
];

8. Displaying Model Data Dynamically

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    final product = products[index];

    return ListTile(
      leading: const Icon(Icons.shopping_bag),
      title: Text(product.name),
      subtitle: Text(product.category),
      trailing: Text('₹${product.price}'),
    );
  },
)

This approach makes it easy to display structured application data.

9. Complete Product Listing Example

import 'package:flutter/material.dart';

class Product {
  final String name;
  final double price;
  final String category;

  Product({
    required this.name,
    required this.price,
    required this.category,
  });
}

class ProductScreen extends StatelessWidget {
  ProductScreen({super.key});

  final List products = [
    Product(
      name: 'Laptop',
      price: 65000,
      category: 'Electronics',
    ),
    Product(
      name: 'Smartphone',
      price: 30000,
      category: 'Electronics',
    ),
    Product(
      name: 'Headphones',
      price: 2500,
      category: 'Accessories',
    ),
  ];

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Products'),
      ),
      body: ListView.builder(
        itemCount: products.length,
        itemBuilder: (context, index) {
          final product = products[index];

          return Card(
            margin: const EdgeInsets.all(8),
            child: ListTile(
              leading: const Icon(Icons.shopping_bag),
              title: Text(product.name),
              subtitle: Text(product.category),
              trailing: Text('₹${product.price}'),
            ),
          );
        },
      ),
    );
  }
}

10. Displaying Dynamic Images

Dynamic application data can also contain image URLs or asset paths.

class Product {
  final String name;
  final double price;
  final String imageUrl;

  Product({
    required this.name,
    required this.price,
    required this.imageUrl,
  });
}

Example data:

final products = [
  Product(
    name: 'Laptop',
    price: 65000,
    imageUrl: 'https://example.com/laptop.jpg',
  ),
  Product(
    name: 'Phone',
    price: 30000,
    imageUrl: 'https://example.com/phone.jpg',
  ),
];

Display the image dynamically:

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    final product = products[index];

    return ListTile(
      leading: Image.network(
        product.imageUrl,
        width: 50,
        height: 50,
        fit: BoxFit.cover,
      ),
      title: Text(product.name),
      subtitle: Text('₹${product.price}'),
    );
  },
)

11. Dynamic Cards

Dynamic data does not have to be displayed using only ListTile. You can create custom cards.

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    final product = products[index];

    return Card(
      margin: const EdgeInsets.all(10),
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              product.name,
              style: const TextStyle(
                fontSize: 20,
                fontWeight: FontWeight.bold,
              ),
            ),
            const SizedBox(height: 8),
            Text(product.category),
            const SizedBox(height: 8),
            Text('₹${product.price}'),
          ],
        ),
      ),
    );
  },
)

12. Dynamic Data with List of Maps

Sometimes data is represented using Map objects, especially when working with JSON-like data.

final users = [
  {
    'name': 'Rahul',
    'email': '[email protected]',
    'age': 25,
  },
  {
    'name': 'Priya',
    'email': '[email protected]',
    'age': 24,
  },
];

Display the data:

ListView.builder(
  itemCount: users.length,
  itemBuilder: (context, index) {
    final user = users[index];

    return ListTile(
      title: Text(user['name'].toString()),
      subtitle: Text(user['email'].toString()),
      trailing: Text(user['age'].toString()),
    );
  },
)

13. Dynamic Data from JSON-Style API Response

Applications commonly receive data from APIs in JSON format. The JSON response can be converted into model objects and then displayed in the UI.

final jsonData = [
  {
    'id': 1,
    'title': 'Flutter Course',
  },
  {
    'id': 2,
    'title': 'Dart Course',
  },
  {
    'id': 3,
    'title': 'UI Design Course',
  },
];

Display the titles:

ListView.builder(
  itemCount: jsonData.length,
  itemBuilder: (context, index) {
    return ListTile(
      leading: CircleAvatar(
        child: Text(
          jsonData[index]['id'].toString(),
        ),
      ),
      title: Text(
        jsonData[index]['title'].toString(),
      ),
    );
  },
)

14. Displaying API Data with FutureBuilder

When application data is loaded asynchronously, FutureBuilder can be used to build different UI states such as loading, successful data, and error states. Flutter's documentation demonstrates this pattern for asynchronous data sources. :contentReference[oaicite:1]{index=1}

Future> fetchUsers() async {
  await Future.delayed(const Duration(seconds: 2));

  return [
    'Rahul',
    'Priya',
    'Amit',
  ];
}

Display the asynchronous data:

FutureBuilder>(
  future: fetchUsers(),
  builder: (context, snapshot) {
    if (snapshot.connectionState == ConnectionState.waiting) {
      return const Center(
        child: CircularProgressIndicator(),
      );
    }

    if (snapshot.hasError) {
      return Center(
        child: Text('Error: ${snapshot.error}'),
      );
    }

    if (!snapshot.hasData || snapshot.data!.isEmpty) {
      return const Center(
        child: Text('No users found'),
      );
    }

    final users = snapshot.data!;

    return ListView.builder(
      itemCount: users.length,
      itemBuilder: (context, index) {
        return ListTile(
          title: Text(users[index]),
        );
      },
    );
  },
)

15. Handling Loading, Success, Empty, and Error States

A production application should not assume that data will always be available.

Loading State

const Center(
  child: CircularProgressIndicator(),
)

Success State

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    return Text(products[index].name);
  },
)

Empty State

const Center(
  child: Text('No products available'),
)

Error State

const Center(
  child: Text('Unable to load data'),
)

16. Dynamic Search

Dynamic application data can be filtered based on user input.

final products = [
  'Laptop',
  'Mobile',
  'Tablet',
  'Headphones',
  'Keyboard',
];

Filter the list:

final filteredProducts = products.where((product) {
  return product.toLowerCase().contains(
    searchText.toLowerCase(),
  );
}).toList();

The filtered data can then be displayed using ListView.builder.

17. Dynamic Filtering Example

class ProductSearch extends StatefulWidget {
  const ProductSearch({super.key});

  @override
  State createState() => _ProductSearchState();
}

class _ProductSearchState extends State {
  final products = [
    'Laptop',
    'Mobile',
    'Tablet',
    'Headphones',
    'Keyboard',
  ];

  String searchText = '';

  @override
  Widget build(BuildContext context) {
    final filteredProducts = products.where((product) {
      return product.toLowerCase().contains(
        searchText.toLowerCase(),
      );
    }).toList();

    return Scaffold(
      appBar: AppBar(
        title: const Text('Product Search'),
      ),
      body: Column(
        children: [
          Padding(
            padding: const EdgeInsets.all(12),
            child: TextField(
              decoration: const InputDecoration(
                hintText: 'Search products',
                prefixIcon: Icon(Icons.search),
                border: OutlineInputBorder(),
              ),
              onChanged: (value) {
                setState(() {
                  searchText = value;
                });
              },
            ),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: filteredProducts.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(filteredProducts[index]),
                );
              },
            ),
          ),
        ],
      ),
    );
  }
}

18. Dynamic Categories

Categories can also be generated dynamically from a list.

final categories = [
  'All',
  'Electronics',
  'Fashion',
  'Books',
  'Sports',
];

ListView.builder(
  scrollDirection: Axis.horizontal,
  itemCount: categories.length,
  itemBuilder: (context, index) {
    return Padding(
      padding: const EdgeInsets.all(8),
      child: Chip(
        label: Text(categories[index]),
      ),
    );
  },
)

19. Dynamic Grid Data

Application data can also be displayed in a grid using GridView.builder.

final products = [
  'Laptop',
  'Mobile',
  'Tablet',
  'Watch',
  'Camera',
  'Speaker',
];

GridView.builder(
  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
    crossAxisCount: 2,
    crossAxisSpacing: 10,
    mainAxisSpacing: 10,
  ),
  itemCount: products.length,
  itemBuilder: (context, index) {
    return Card(
      child: Center(
        child: Text(products[index]),
      ),
    );
  },
)

20. Updating Dynamic Data with setState

When local application data changes, a StatefulWidget can update the UI using setState().

class TodoScreen extends StatefulWidget {
  const TodoScreen({super.key});

  @override
  State createState() => _TodoScreenState();
}

class _TodoScreenState extends State {
  final List todos = [
    'Learn Flutter',
    'Practice Dart',
  ];

  void addTodo() {
    setState(() {
      todos.add('Build Flutter App');
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Todos'),
        actions: [
          IconButton(
            onPressed: addTodo,
            icon: const Icon(Icons.add),
          ),
        ],
      ),
      body: ListView.builder(
        itemCount: todos.length,
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(todos[index]),
          );
        },
      ),
    );
  }
}

21. Removing Dynamic Data

Items can be removed from a local list and the UI can be rebuilt.

void removeTodo(int index) {
  setState(() {
    todos.removeAt(index);
  });
}

Use the method from the list item:

ListTile(
  title: Text(todos[index]),
  trailing: IconButton(
    icon: const Icon(Icons.delete),
    onPressed: () {
      removeTodo(index);
    },
  ),
)

22. Swipe to Remove Dynamic Items

The Dismissible widget can provide swipe-to-dismiss interactions for list items. Flutter's official cookbook demonstrates wrapping dynamically generated list items with Dismissible and updating the underlying data after dismissal. :contentReference[oaicite:2]{index=2}

ListView.builder(
  itemCount: todos.length,
  itemBuilder: (context, index) {
    return Dismissible(
      key: ValueKey(todos[index]),
      onDismissed: (direction) {
        setState(() {
          todos.removeAt(index);
        });
      },
      background: Container(
        color: Colors.red,
        child: const Icon(
          Icons.delete,
          color: Colors.white,
        ),
      ),
      child: ListTile(
        title: Text(todos[index]),
      ),
    );
  },
)

23. Dynamic Checkbox List

class Task {
  String title;
  bool completed;

  Task({
    required this.title,
    this.completed = false,
  });
}

final tasks = [
  Task(title: 'Learn Dart'),
  Task(title: 'Learn Flutter'),
  Task(title: 'Build an App'),
];

Display the tasks dynamically:

ListView.builder(
  itemCount: tasks.length,
  itemBuilder: (context, index) {
    return CheckboxListTile(
      title: Text(tasks[index].title),
      value: tasks[index].completed,
      onChanged: (value) {
        setState(() {
          tasks[index].completed = value ?? false;
        });
      },
    );
  },
)

24. Passing Dynamic Data to Another Screen

Dynamic data can be passed to another screen when a user selects an item. Flutter's navigation documentation demonstrates passing a selected object to a detail screen using Navigator.push(). :contentReference[oaicite:3]{index=3}

class Product {
  final String name;
  final double price;

  const Product({
    required this.name,
    required this.price,
  });
}

List screen:

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    final product = products[index];

    return ListTile(
      title: Text(product.name),
      subtitle: Text('₹${product.price}'),
      onTap: () {
        Navigator.push(
          context,
          MaterialPageRoute(
            builder: (context) {
              return ProductDetailsScreen(
                product: product,
              );
            },
          ),
        );
      },
    );
  },
)

Detail screen:

class ProductDetailsScreen extends StatelessWidget {
  final Product product;

  const ProductDetailsScreen({
    super.key,
    required this.product,
  });

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(product.name),
      ),
      body: Center(
        child: Text(
          'Price: ₹${product.price}',
          style: const TextStyle(fontSize: 24),
        ),
      ),
    );
  }
}

25. Dynamic Application Data Flow

A typical Flutter application can follow this flow:

1. Data is received from an API, database, local storage, or another source.
2. The data is converted into Dart objects or collections.
3. The application stores the data in memory or a state-management layer.
4. Widgets read the data.
5. The widgets display the data dynamically.
6. When the data changes, the relevant UI is rebuilt.

Data Source
    ↓
Dart Model / Collection
    ↓
State / ViewModel
    ↓
Flutter Widget
    ↓
Dynamic UI
    ↓
User Interaction
    ↓
Data Update
    ↓
UI Rebuild

26. Separating Data from UI

A good application should avoid putting all data directly inside the widget tree.

Instead of:

ListView(
  children: const [
    Text('Laptop'),
    Text('Mobile'),
    Text('Tablet'),
  ],
)

Prefer:

final products = [
  'Laptop',
  'Mobile',
  'Tablet',
];

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    return Text(products[index]);
  },
)

This makes the application easier to update when the data source changes.

27. Reusable Dynamic Widget

You can create reusable widgets that receive data as parameters.

class ProductCard extends StatelessWidget {
  final String name;
  final double price;

  const ProductCard({
    super.key,
    required this.name,
    required this.price,
  });

  @override
  Widget build(BuildContext context) {
    return Card(
      child: ListTile(
        title: Text(name),
        subtitle: Text('₹$price'),
      ),
    );
  }
}

Use the reusable widget dynamically:

ListView.builder(
  itemCount: products.length,
  itemBuilder: (context, index) {
    final product = products[index];

    return ProductCard(
      name: product.name,
      price: product.price,
    );
  },
)

28. Dynamic Mixed-Type Lists

Some applications need lists containing different types of content, such as section headers followed by messages or products. Flutter's official documentation demonstrates defining different item types and converting them into widgets with ListView.builder. :contentReference[oaicite:4]{index=4}

abstract class AppItem {}

class HeaderItem extends AppItem {
  final String title;

  HeaderItem(this.title);
}

class MessageItem extends AppItem {
  final String message;

  MessageItem(this.message);
}

final items = [
  HeaderItem('Messages'),
  MessageItem('Welcome to Flutter'),
  MessageItem('Learn dynamic UI'),
  HeaderItem('Tasks'),
  MessageItem('Complete Flutter project'),
];

29. Dynamic UI Based on Data Conditions

The UI can change depending on the value of the data.

class Product {
  final String name;
  final double price;
  final bool inStock;

  Product({
    required this.name,
    required this.price,
    required this.inStock,
  });
}

Conditional UI:

ListTile(
  title: Text(product.name),
  subtitle: Text(
    product.inStock
        ? 'In Stock'
        : 'Out of Stock',
  ),
  trailing: product.inStock
      ? ElevatedButton(
          onPressed: () {},
          child: const Text('Buy'),
        )
      : const Text('Unavailable'),
)

30. Dynamic Buttons

Buttons can also be generated from data.

final actions = [
  'Edit',
  'Share',
  'Delete',
];

Wrap(
  spacing: 8,
  children: actions.map((action) {
    return ElevatedButton(
      onPressed: () {
        print(action);
      },
      child: Text(action),
    );
  }).toList(),
)

31. Dynamic Application Dashboard

Dashboard statistics can be represented using a list of objects.

class DashboardItem {
  final String title;
  final String value;
  final IconData icon;

  DashboardItem({
    required this.title,
    required this.value,
    required this.icon,
  });
}

final dashboardItems = [
  DashboardItem(
    title: 'Users',
    value: '12,450',
    icon: Icons.people,
  ),
  DashboardItem(
    title: 'Orders',
    value: '3,240',
    icon: Icons.shopping_cart,
  ),
  DashboardItem(
    title: 'Revenue',
    value: '₹8,45,000',
    icon: Icons.currency_rupee,
  ),
];

Display dashboard cards:

GridView.builder(
  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
    crossAxisCount: 2,
    crossAxisSpacing: 10,
    mainAxisSpacing: 10,
  ),
  itemCount: dashboardItems.length,
  itemBuilder: (context, index) {
    final item = dashboardItems[index];

    return Card(
      child: Padding(
        padding: const EdgeInsets.all(16),
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Icon(item.icon, size: 35),
            const SizedBox(height: 10),
            Text(item.title),
            const SizedBox(height: 5),
            Text(
              item.value,
              style: const TextStyle(
                fontSize: 20,
                fontWeight: FontWeight.bold,
              ),
            ),
          ],
        ),
      ),
    );
  },
)

32. Performance Considerations

When displaying large amounts of application data, avoid creating every widget unnecessarily. Flutter's ListView.builder is designed for long or large lists and creates list children as they are needed during scrolling. :contentReference[oaicite:5]{index=5}

When item sizes are known, properties such as itemExtent or prototypeItem can provide additional information to the scrolling system and can improve efficiency. :contentReference[oaicite:6]{index=6}

Example

ListView.builder(
  itemCount: products.length,
  itemExtent: 80,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(products[index].name),
    );
  },
)

33. Common Mistakes

• Hard-coding every item instead of using a data source.
• Using ListView with a very large number of pre-built children.
• Forgetting to provide itemCount when it is needed.
• Using an invalid list index.
• Ignoring loading and error states for asynchronous data.
• Putting complex data-processing logic directly inside large widget trees.
• Not updating the data source when the UI is expected to change.
• Using unstable keys for stateful dynamic list items.
• Loading large images without considering memory and network usage.

34. Best Practices

• Use model classes for structured application data.
• Use ListView.builder for large or dynamically generated lists.
• Keep data and UI responsibilities separate.
• Use reusable widgets for repeated UI structures.
• Handle loading, success, empty, and error states.
• Use FutureBuilder or an appropriate state-management approach for asynchronous data.
• Use meaningful model and variable names.
• Use stable keys when dynamic list items contain state.
• Filter and transform data before presenting it when appropriate.
• Keep expensive operations out of frequently executed widget-building code.

35. Practical Example: Dynamic Todo Application

import 'package:flutter/material.dart';

class Todo {
  final String title;
  bool completed;

  Todo({
    required this.title,
    this.completed = false,
  });
}

void main() {
  runApp(const TodoApp());
}

class TodoApp extends StatelessWidget {
  const TodoApp({super.key});

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: const TodoScreen(),
    );
  }
}

class TodoScreen extends StatefulWidget {
  const TodoScreen({super.key});

  @override
  State createState() => _TodoScreenState();
}

class _TodoScreenState extends State {
  final List todos = [
    Todo(title: 'Learn Dart'),
    Todo(title: 'Learn Flutter'),
    Todo(title: 'Build an Application'),
  ];

  void addTodo() {
    setState(() {
      todos.add(
        Todo(title: 'New Flutter Task'),
      );
    });
  }

  void removeTodo(int index) {
    setState(() {
      todos.removeAt(index);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Dynamic Todo App'),
        actions: [
          IconButton(
            onPressed: addTodo,
            icon: const Icon(Icons.add),
          ),
        ],
      ),
      body: todos.isEmpty
          ? const Center(
              child: Text('No tasks available'),
            )
          : ListView.builder(
              itemCount: todos.length,
              itemBuilder: (context, index) {
                final todo = todos[index];

                return CheckboxListTile(
                  title: Text(todo.title),
                  value: todo.completed,
                  onChanged: (value) {
                    setState(() {
                      todo.completed = value ?? false;
                    });
                  },
                  secondary: IconButton(
                    onPressed: () {
                      removeTodo(index);
                    },
                    icon: const Icon(Icons.delete),
                  ),
                );
              },
            ),
    );
  }
}

36. How This Example Works

1. The Todo model represents application data.
2. The todos list stores multiple todo objects.
3. ListView.builder creates the UI dynamically.
4. CheckboxListTile displays the completion status.
5. setState() rebuilds the relevant UI after data changes.
6. The add button adds a new item to the list.
7. The delete button removes an item.
8. The empty state is displayed when the list contains no items.

37. Real-World Applications of Dynamic Data

38. Key Concepts to Remember

• Dynamic UI is generated from application data instead of manually creating every widget.
• Dart Lists are commonly used to store collections of data.
• Model classes are useful for structured application data.
• ListView is useful for scrollable lists.
• ListView.builder is useful for large or dynamically generated lists.
• GridView.builder can display dynamic data in grid form.
• FutureBuilder can display asynchronous data and handle loading/error states.
• setState() can update locally managed dynamic data.
• Dynamic data can be filtered, sorted, searched, added, removed, and updated.
• Data can be passed from a list screen to a detail screen.

39. Practice Exercises

1. Create a dynamic list of 10 students.
2. Create a product model with name, price, category, and image.
3. Display products using ListView.builder.
4. Create a search field to filter products.
5. Create a dynamic category selector.
6. Create a shopping cart using a dynamic list.
7. Add delete functionality using Dismissible.
8. Create a dynamic dashboard using GridView.builder.
9. Create a todo application with add, edit, complete, and delete functionality.
10. Fetch JSON-style data and display it using FutureBuilder.

40. Conclusion

Displaying dynamic application data is a fundamental Flutter development skill. By combining Dart collections, model classes, ListView.builder, GridView.builder, asynchronous data handling, state updates, filtering, and reusable widgets, developers can build interfaces that automatically reflect changing application data.

The key idea is simple: store data separately, transform the data into widgets, and rebuild the UI whenever the relevant data changes.

Official Flutter Resources

• Flutter: Use Lists
• Flutter: Work with Long Lists
• Flutter: Create Lists with Different Types of Items
• Flutter: Pass Data to Another Screen
• Flutter: Swipe to Dismiss
• Flutter: Working with Asynchronous Data

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