telegram 1.0.0 
telegram: ^1.0.0 copied to clipboard
usama.devA comprehensive Telegram utility for Flutter with URL schemes, Bot API integration, media sharing, chat management, and Web App support.
import 'package:flutter/material.dart';
import 'package:telegram/telegram.dart';
void main() {
runApp(const TelegramApp());
}
class TelegramApp extends StatefulWidget {
const TelegramApp({super.key});
@override
State<TelegramApp> createState() => _TelegramAppState();
}
class _TelegramAppState extends State<TelegramApp> {
final _key = GlobalKey<FormState>();
String? username;
String? message;
String? botToken;
String? chatId;
bool _isLoading = false;
String _result = '';
// Demo values
final String demoUsername = 'UsamaSarwar';
final String demoChannel = 'freelancers_inc';
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Telegram API Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
title: Text(
username == null || username == ''
? 'Telegram API Demo'
: '@$username',
),
bottom: const TabBar(
tabs: [
Tab(icon: Icon(Icons.send), text: 'URL Schemes'),
Tab(icon: Icon(Icons.smart_toy), text: 'Bot API'),
Tab(icon: Icon(Icons.extension), text: 'Utilities'),
],
),
),
body: TabBarView(
children: [
_buildUrlSchemeTab(),
_buildBotApiTab(),
_buildUtilitiesTab(),
],
),
),
),
);
}
Widget _buildUrlSchemeTab() {
return SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Form(
key: _key,
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'URL Scheme Methods',
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
),
const SizedBox(height: 16),
TextFormField(
decoration: const InputDecoration(
labelText: 'Username',
hintText: 'UsamaSarwar',
border: OutlineInputBorder(),
),
onChanged: (String value) {
setState(() {
username = value;
});
},
validator: (value) {
if (value == null || value.isEmpty) {
return 'Username is required';
}
if (value.length < 5) {
return 'Username must be at least 5 characters long';
}
if (!RegExp(r'^([a-zA-Z0-9_-]*)$').hasMatch(value)) {
return 'Invalid username';
}
return null;
},
),
const SizedBox(height: 16),
TextFormField(
minLines: 1,
maxLines: 5,
decoration: const InputDecoration(
labelText: 'Message (Optional)',
hintText: 'Hello from Telegram Flutter Package!',
border: OutlineInputBorder(),
),
onChanged: (String value) {
message = value;
},
),
const SizedBox(height: 24),
Wrap(
spacing: 8,
runSpacing: 8,
children: [
ElevatedButton.icon(
onPressed: () => _performAction(() {
if (_key.currentState!.validate()) {
Telegram.send(username: username!, message: message);
}
}),
icon: const Icon(Icons.send),
label: const Text('Send Message'),
),
ElevatedButton.icon(
onPressed: () => _performAction(() {
if (_key.currentState!.validate()) {
Telegram.copyLinkToClipboard(
username: username!,
message: message,
);
_showSnackBar('Link copied to clipboard!');
}
}),
icon: const Icon(Icons.content_copy),
label: const Text('Copy Link'),
),
ElevatedButton.icon(
onPressed: () => _performAction(() async {
if (_key.currentState!.validate()) {
await Telegram.openChat(username: username!);
}
}),
icon: const Icon(Icons.chat),
label: const Text('Open Chat'),
),
ElevatedButton.icon(
onPressed: () => _performAction(() async {
bool installed = await Telegram.isTelegramInstalled();
_showSnackBar('Telegram installed: $installed');
}),
icon: const Icon(Icons.info),
label: const Text('Check Installation'),
),
],
),
const SizedBox(height: 24),
const Text(
'Demo Actions',
style: TextStyle(fontSize: 18, fontWeight: FontWeight.w600),
),
const SizedBox(height: 12),
Wrap(
spacing: 8,
runSpacing: 8,
children: [
OutlinedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.openGroup(username: demoChannel);
}),
icon: const Icon(Icons.group),
label: Text('Join $demoChannel'),
),
OutlinedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.shareContact(
phone: '+923100007773',
firstName: 'Usama',
lastName: 'Sarwar',
);
}),
icon: const Icon(Icons.contact_phone),
label: const Text('Share Contact'),
),
OutlinedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.openBot(username: 'BotFather');
}),
icon: const Icon(Icons.smart_toy),
label: const Text('Open BotFather'),
),
OutlinedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.openStickerSet(
stickerSetName: 'AnimatedEmojies',
);
}),
icon: const Icon(Icons.emoji_emotions),
label: const Text('Sticker Set'),
),
],
),
],
),
),
);
}
Widget _buildBotApiTab() {
return SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'Bot API Methods',
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
),
const SizedBox(height: 16),
TextFormField(
decoration: const InputDecoration(
labelText: 'Bot Token',
hintText: '123456789:ABCdefGHIjklMNOpqrsTUVwxyz',
border: OutlineInputBorder(),
),
onChanged: (String value) {
botToken = value;
if (value.isNotEmpty) {
Telegram.setBotToken(value);
}
},
),
const SizedBox(height: 16),
TextFormField(
decoration: const InputDecoration(
labelText: 'Chat ID',
hintText: '@username or numeric ID',
border: OutlineInputBorder(),
),
onChanged: (String value) {
chatId = value;
},
),
const SizedBox(height: 24),
if (_isLoading)
const Center(child: CircularProgressIndicator())
else
Wrap(
spacing: 8,
runSpacing: 8,
children: [
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
final result = await Telegram.getMe();
return 'Bot Info: ${result['first_name']} (@${result['username']})';
}),
icon: const Icon(Icons.info),
label: const Text('Get Bot Info'),
),
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
if (chatId?.isNotEmpty != true) {
throw Exception('Chat ID is required');
}
await Telegram.sendMessage(
chatId: chatId!,
text: 'Hello from Telegram Flutter Package! 🚀',
);
return 'Message sent successfully!';
}),
icon: const Icon(Icons.send),
label: const Text('Send Text'),
),
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
if (chatId?.isNotEmpty != true) {
throw Exception('Chat ID is required');
}
await Telegram.sendPhoto(
chatId: chatId!,
photo: 'https://picsum.photos/400/300',
caption: 'Random photo from Telegram Package',
);
return 'Photo sent successfully!';
}),
icon: const Icon(Icons.photo),
label: const Text('Send Photo'),
),
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
if (chatId?.isNotEmpty != true) {
throw Exception('Chat ID is required');
}
await Telegram.sendLocation(
chatId: chatId!,
latitude: 37.7749,
longitude: -122.4194,
);
return 'Location sent successfully!';
}),
icon: const Icon(Icons.location_on),
label: const Text('Send Location'),
),
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
if (chatId?.isNotEmpty != true) {
throw Exception('Chat ID is required');
}
final chat = await Telegram.getChat(chatId: chatId!);
return 'Chat: ${chat['title'] ?? chat['first_name'] ?? 'Unknown'}';
}),
icon: const Icon(Icons.chat_bubble),
label: const Text('Get Chat Info'),
),
ElevatedButton.icon(
onPressed: () => _performBotApiAction(() async {
await Telegram.setMyCommands(
commands: [
{'command': 'start', 'description': 'Start the bot'},
{'command': 'help', 'description': 'Show help message'},
{'command': 'about', 'description': 'About this bot'},
],
);
return 'Bot commands set successfully!';
}),
icon: const Icon(Icons.list),
label: const Text('Set Commands'),
),
],
),
const SizedBox(height: 24),
if (_result.isNotEmpty)
Container(
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: Colors.grey[100],
borderRadius: BorderRadius.circular(8),
border: Border.all(color: Colors.grey[300]!),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Result:',
style: TextStyle(fontWeight: FontWeight.bold),
),
const SizedBox(height: 8),
Text(_result),
],
),
),
],
),
);
}
Widget _buildUtilitiesTab() {
return SingleChildScrollView(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
const Text(
'Utility Methods',
style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Link Generation',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 12),
ElevatedButton.icon(
onPressed: () {
final link = Telegram.getLink(
username: demoUsername,
message: 'Hello from Flutter!',
);
_showDialog('Generated Link', link);
},
icon: const Icon(Icons.link),
label: const Text('Generate Message Link'),
),
const SizedBox(height: 8),
ElevatedButton.icon(
onPressed: () {
final shareUrl = Telegram.generateShareUrl(
text: 'Check out this amazing Telegram package!',
url: 'https://pub.dev/packages/telegram',
);
_showDialog('Share URL', shareUrl);
},
icon: const Icon(Icons.share),
label: const Text('Generate Share URL'),
),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Advanced Features',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 12),
Wrap(
spacing: 8,
runSpacing: 8,
children: [
ElevatedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.openWebApp(
botUsername: 'gamebot',
webAppUrl: 'https://example.com/game',
startParam: 'demo',
);
}),
icon: const Icon(Icons.web),
label: const Text('Open Web App'),
),
ElevatedButton.icon(
onPressed: () => _performAction(() async {
await Telegram.openTheme(themeName: 'dark');
}),
icon: const Icon(Icons.palette),
label: const Text('Open Theme'),
),
ElevatedButton.icon(
onPressed: () => _performAction(() async {
bool available =
await Telegram.checkUsernameAvailability(
username: demoUsername,
);
_showSnackBar('Username available: $available');
}),
icon: const Icon(Icons.search),
label: const Text('Check Username'),
),
],
),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Demo Information',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 12),
Text('Demo Username: @$demoUsername'),
Text('Demo Channel: t.me/$demoChannel'),
const SizedBox(height: 8),
const Text(
'To test Bot API features, create a bot with @BotFather and enter the token in the Bot API tab.',
style: TextStyle(fontStyle: FontStyle.italic),
),
],
),
),
),
const SizedBox(height: 16),
Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text(
'Package Features',
style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600),
),
const SizedBox(height: 12),
const Text('✅ URL Scheme Methods'),
const Text('✅ Bot API Integration'),
const Text('✅ Media Sending'),
const Text('✅ Location Sharing'),
const Text('✅ Chat Management'),
const Text('✅ Web App Support'),
const Text('✅ Sticker Sets & Themes'),
const Text('✅ Link Generation'),
],
),
),
),
],
),
);
}
Future<void> _performAction(Function action) async {
try {
setState(() => _isLoading = true);
await action();
setState(() => _result = 'Action completed successfully!');
} catch (e) {
_showSnackBar('Error: $e');
setState(() => _result = 'Error: $e');
} finally {
setState(() => _isLoading = false);
}
}
Future<void> _performBotApiAction(Future<String> Function() action) async {
try {
setState(() => _isLoading = true);
final result = await action();
setState(() => _result = result);
} catch (e) {
_showSnackBar('Error: $e');
setState(() => _result = 'Error: $e');
} finally {
setState(() => _isLoading = false);
}
}
void _showSnackBar(String message) {
ScaffoldMessenger.of(
context,
).showSnackBar(SnackBar(content: Text(message)));
}
void _showDialog(String title, String content) {
showDialog(
context: context,
builder: (context) => AlertDialog(
title: Text(title),
content: SelectableText(content),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: const Text('Close'),
),
],
),
);
}
}Metadata
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likes
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points
274
downloads
Publisher
Weekly Downloads
Metadata
A comprehensive Telegram utility for Flutter with URL schemes, Bot API integration, media sharing, chat management, and Web App support.
Homepage
Repository (GitHub)
View/report issues
Contributing
Topics
#telegram #bot-api #messaging #url-schemes #media-sharing
Documentation
License
MIT (license)
