Learn FLUTTERFLOW with Real Code Examples

// Dart code example generated by FlutterFlow
import 'package:flutter/material.dart';

class TodoApp extends StatefulWidget {
    @override
    _TodoAppState createState() => _TodoAppState();
}

class _TodoAppState extends State<TodoApp> {
    final List<String> todos = [];
    final TextEditingController controller = TextEditingController();

    void addTodo() {
        if(controller.text.trim().isNotEmpty) {
        setState(() { todos.add(controller.text.trim()); });
        controller.clear();
        }
    }

    @override
    Widget build(BuildContext context) {
        return Scaffold(
        appBar: AppBar(title: Text('Todo App')),
        body: Column(
        children: [
        TextField(controller: controller, decoration: InputDecoration(hintText: 'New Todo')),
        ElevatedButton(onPressed: addTodo, child: Text('Add')),
        Expanded(
        child: ListView.builder(
        itemCount: todos.length,
        itemBuilder: (context, index) => ListTile(title: Text(todos[index])),
        ),
        ),
        ],
        ),
        );
    }
}

Demonstrates a simple FlutterFlow app with a Todo list, adding tasks, and displaying them using visual components with optional custom Dart logic.

import 'package:flutter/material.dart';

class ExpenseTracker extends StatefulWidget {
    @override
    _ExpenseTrackerState createState() => _ExpenseTrackerState();
}

class _ExpenseTrackerState extends State<ExpenseTracker> {
    final List<Map<String, dynamic>> expenses = [];
    final TextEditingController desc = TextEditingController();
    final TextEditingController amount = TextEditingController();
    double get total => expenses.fold(0, (sum, e) => sum + e['amount']);

    void addExpense() {
        if(desc.text.isNotEmpty && amount.text.isNotEmpty) {
        setState(() {
        expenses.add({'desc': desc.text, 'amount': double.parse(amount.text)});
        desc.clear();
        amount.clear();
        });
        }
    }

    @override
    Widget build(BuildContext context) {
        return Scaffold(
        appBar: AppBar(title: Text('Expense Tracker')),
        body: Column(
        children: [
        TextField(controller: desc, decoration: InputDecoration(hintText: 'Description')),
        TextField(controller: amount, keyboardType: TextInputType.number, decoration: InputDecoration(hintText: 'Amount')),
        ElevatedButton(onPressed: addExpense, child: Text('Add Expense')),
        Text('Total: $' + total.toStringAsFixed(2)),
        Expanded(
        child: ListView.builder(
        itemCount: expenses.length,
        itemBuilder: (context, index) => ListTile(title: Text(expenses[index]['desc']), trailing: Text('$' + expenses[index]['amount'].toString())),
        ),
        ),
        ],
        ),
        );
    }
}

Tracks expenses with visual input fields and lists in FlutterFlow, enhanced with custom Dart code for managing total sums.

import 'package:flutter/material.dart';

class NotesApp extends StatefulWidget {
    @override
    _NotesAppState createState() => _NotesAppState();
}

class _NotesAppState extends State<NotesApp> {
    final List<String> notes = [];
    final controller = TextEditingController();

    void addNote() {
        if(controller.text.isNotEmpty){
        setState(() => notes.add(controller.text));
        controller.clear();
        }
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Notes')),
        body: Column(
        children:[
        TextField(controller: controller, decoration: InputDecoration(hintText: 'Write note')),
        ElevatedButton(onPressed: addNote, child: Text('Add')),
        Expanded(child: ListView(children: notes.map((n)=>ListTile(title: Text(n))).toList())),
        ]
        )
        );
    }
}

A simple note-taking app using FlutterFlow's visual ListView and custom Dart state logic.

import 'package:flutter/material.dart';

class HabitTracker extends StatefulWidget {
    @override
    _HabitTrackerState createState() => _HabitTrackerState();
}

class _HabitTrackerState extends State<HabitTracker> {
    List<Map<String, dynamic>> habits = [
        {'title': 'Drink Water', 'done': false},
        {'title': 'Exercise', 'done': false}
    ];

    void toggleHabit(int i){
        setState(()=> habits[i]['done'] = !habits[i]['done']);
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Habit Tracker')),
        body: ListView.builder(
        itemCount: habits.length,
        itemBuilder: (c,i)=>CheckboxListTile(
        title: Text(habits[i]['title']),
        value: habits[i]['done'],
        onChanged: (_) => toggleHabit(i),
        )
        )
        );
    }
}

Tracks daily habits with checkboxes and FlutterFlow toggle widgets, combined with custom Dart logic.

import 'package:flutter/material.dart';
import 'dart:convert';
import 'package:http/http.dart' as http;

class WeatherApp extends StatefulWidget {
    @override
    _WeatherAppState createState() => _WeatherAppState();
}

class _WeatherAppState extends State<WeatherApp> {
    final controller = TextEditingController();
    Map<String, dynamic>? weather;

    Future<void> fetchWeather() async {
        final res = await http.get(Uri.parse('https://api.weatherapi.com/v1/current.json?key=YOUR_API_KEY&q=${controller.text}'));
        setState(()=>weather=jsonDecode(res.body));
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Weather App')),
        body: Column(children:[
        TextField(controller: controller, decoration: InputDecoration(hintText:'Enter City')),
        ElevatedButton(onPressed: fetchWeather, child: Text('Search')),
        if(weather!=null) Text('Temp: '+weather!['current']['temp_c'].toString()+'°C')
        ])
        );
    }
}

Fetches weather data using an API and displays it using FlutterFlow visual widgets.

import 'package:flutter/material.dart';

class RecipeApp extends StatefulWidget {
    @override
    _RecipeAppState createState() => _RecipeAppState();
}

class _RecipeAppState extends State<RecipeApp> {
    final recipes = <String>[];
    final controller = TextEditingController();

    void addRecipe(){
        if(controller.text.isNotEmpty){
        setState(()=>recipes.add(controller.text));
        controller.clear();
        }
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Recipe App')),
        body: Column(children:[
        TextField(controller: controller, decoration: InputDecoration(hintText:'Recipe name')),
        ElevatedButton(onPressed: addRecipe, child: Text('Add')),
        Expanded(child: ListView(children: recipes.map((r)=>Card(child:ListTile(title:Text(r)))).toList())),
        ])
        );
    }
}

Manages a list of favorite recipes and displays them using FlutterFlow's ListView and Cards.

import 'package:flutter/material.dart';

class LoginScreen extends StatefulWidget {
    @override
    _LoginScreenState createState() => _LoginScreenState();
}

class _LoginScreenState extends State<LoginScreen> {
    final email = TextEditingController();
    final pass = TextEditingController();

    void login(){
        if(email.text.isEmpty || pass.text.isEmpty){
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Fill all fields')));
        }else{
        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('Login Success')));
        }
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Login')),
        body: Padding(
        padding: EdgeInsets.all(16),
        child: Column(children:[
        TextField(controller: email, decoration: InputDecoration(labelText:'Email')),
        TextField(controller: pass, obscureText: true, decoration: InputDecoration(labelText:'Password')),
        ElevatedButton(onPressed: login, child: Text('Login')),
        ])
        )
        );
    }
}

Demonstrates a simple login UI in FlutterFlow with custom Dart validation logic.

import 'package:flutter/material.dart';

class CounterApp extends StatefulWidget {
    @override
    _CounterAppState createState() => _CounterAppState();
}

class _CounterAppState extends State<CounterApp> {
    int count = 0;

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Counter')),
        body: Center(
        child: Column(mainAxisAlignment: MainAxisAlignment.center, children:[
        Text('Count: '+count.toString(), style: TextStyle(fontSize: 24)),
        ElevatedButton(onPressed: ()=>setState(()=>count++), child: Text('Increment')),
        ElevatedButton(onPressed: ()=>setState(()=>count--), child: Text('Decrement')),
        ])
        )
        );
    }
}

A basic counter app example using FlutterFlow and custom Dart state logic.

import 'package:flutter/material.dart';

class ChatScreen extends StatefulWidget {
    @override
    _ChatScreenState createState() => _ChatScreenState();
}

class _ChatScreenState extends State<ChatScreen> {
    final List<String> messages = [];
    final controller = TextEditingController();

    void sendMessage(){
        if(controller.text.isNotEmpty){
        setState(()=>messages.add(controller.text));
        controller.clear();
        }
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Chat')),
        body: Column(children:[
        Expanded(child: ListView(children: messages.map((m)=>ListTile(title:Text(m))).toList())),
        Row(children:[
        Expanded(child: TextField(controller: controller, decoration: InputDecoration(hintText:'Message'))),
        IconButton(icon: Icon(Icons.send), onPressed: sendMessage)
        ])
        ])
        );
    }
}

Simple chat UI showing how to send and display messages using FlutterFlow visual components.

import 'package:flutter/material.dart';

class ShoppingCart extends StatefulWidget {
    @override
    _ShoppingCartState createState() => _ShoppingCartState();
}

class _ShoppingCartState extends State<ShoppingCart> {
    final List<String> cart = [];
    final TextEditingController controller = TextEditingController();

    void addItem(){
        if(controller.text.isNotEmpty){
        setState(()=>cart.add(controller.text));
        controller.clear();
        }
    }

    void removeItem(int i){
        setState(()=>cart.removeAt(i));
    }

    @override
    Widget build(BuildContext context){
        return Scaffold(
        appBar: AppBar(title: Text('Shopping Cart')),
        body: Column(children:[
        TextField(controller: controller, decoration: InputDecoration(hintText:'Add Item')),
        ElevatedButton(onPressed: addItem, child: Text('Add')),
        Expanded(child: ListView.builder(
        itemCount: cart.length,
        itemBuilder: (c,i)=>ListTile(title:Text(cart[i]), trailing: IconButton(icon:Icon(Icons.delete), onPressed:()=>removeItem(i)))
        ))
        ])
        );
    }
}

Demonstrates adding and removing items in a shopping cart using FlutterFlow visual elements and Dart state.