Location Picker Plus #

A comprehensive Flutter plugin for location selection with POWERFUL WIDGETS:

Traditional Picker - Dropdown/autocomplete selection from predefined data
🆕 Live Location Detection - GPS location detection with geocoding support
🔥 Unified Widget - All-in-one widget with smart field management and Google Places

🚀 Two Widgets, Endless Possibilities #

📍 LocationPickerWidget (Traditional Selection) #

Select from predefined country, state, and city data with beautiful UI customization.

🌍 LocationDetectorWidget (NEW - Live Location) #

Detect current GPS location or search any address with real-time geocoding.

Features #

Traditional Location Picker #

✓ Two Input Modes - Dropdown with search OR Real-time autocomplete
✓ Instant Suggestions - See suggestions as you type (no Enter key needed)
✓ Debounced Performance - Optimized for smooth typing experience
✓ Customizable Themes - Multiple pre-built themes and full customization support
✓ Smart Search - Built-in search with relevance sorting
✓ Flag Emojis & Phone Codes - Display country flags and phone codes
✓ Flexible Layouts - Horizontal/vertical layouts with responsive design
✓ Asset-based Data - Load location data from JSON assets
✓ Enhanced Models - Rich data models with additional properties
✓ Animation Support - Smooth transitions and animations
✓ Accessibility - Screen reader support and keyboard navigation

🆕 Live Location Detection #

🌍 GPS Location Detection - Get current location with one tap
🔍 Address Geocoding - Search any address and get coordinates
🏠 Reverse Geocoding - Convert coordinates to readable addresses
📍 Forward Geocoding - Convert addresses to coordinates
🔐 Auto Permission Handling - Handles all location permissions automatically
⚡ High Accuracy GPS - Configurable accuracy levels
🌐 Multi-locale Support - Address detection in multiple languages
📱 Cross-platform - Full Android and iOS support
🎛️ Flexible Modes - GPS only, search only, or both
🎨 Full UI Customization - Match your app's design

🔥 NEW v2.1.0 - Smart Field Management #

🔒 Smart Field Locking - Auto-lock fields when address selected from Google Places
🌏 Country Restrictions - Limit dropdown to specific countries (names or ISO codes)
📍 Address Source Tracking - Know if address came from Google Places, GPS, or manual entry
🎯 Conditional Editing - Google Places = locked, Manual/GPS = editable
👁️ Visual Indicators - Clear UI showing when fields are locked for accuracy

Installation #

Add this to your package's pubspec.yaml file:

dependencies:
  location_picker_plus: ^2.1.0

📱 Platform Setup (for Live Location Features) #

Android

Add to android/app/src/main/AndroidManifest.xml:

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />

iOS

Add to ios/Runner/Info.plist:

<key>NSLocationWhenInUseUsageDescription</key>
<string>This app needs location access to detect your current location.</string>

Usage #

🆕 Live Location Detection #

Quick Start

import 'package:location_picker_plus/location_picker_plus.dart';

LocationDetectorWidget(
  mode: LocationDetectorMode.both, // GPS + Address search
  showCoordinates: true,
  onLocationChanged: (location) {
    print('Lat: ${location?.latitude}, Lng: ${location?.longitude}');
    print('Address: ${location?.fullAddress}');
    print('City: ${location?.locality}');
    print('State: ${location?.administrativeArea}');
    print('Country: ${location?.country}');
  },
)

GPS Detection Only

LocationDetectorWidget(
  mode: LocationDetectorMode.currentLocation,
  onCoordinatesChanged: (lat, lng) {
    print('Coordinates: $lat, $lng');
  },
)

Address Search Only

LocationDetectorWidget(
  mode: LocationDetectorMode.addressSearch,
  addressSearchHint: 'Enter address, city, or landmark...',
  onLocationChanged: (location) {
    // Use detected location data
  },
)

Advanced Usage with Service

// Direct service usage for custom UI
LocationDetectorService service = LocationDetectorService.instance;

// Get current location
LocationModel? location = await service.getCurrentLocationWithAddress();
print('Current city: ${location?.locality}');

// Search address
LocationModel? searched = await service.getCoordinatesFromAddress('New York');
print('NYC coordinates: ${searched?.latitude}, ${searched?.longitude}');

🔥 Unified Location Picker with Smart Field Management (NEW v2.1.0) #

The ultimate all-in-one widget combining Google Places, GPS detection, and manual entry with intelligent field management.

🎯 Smart Field Behavior

Google Places Selection → Fields automatically lock for accuracy
Manual Entry → All fields remain fully editable
GPS Location → All fields remain editable
Country Restrictions → Limit countries in dropdown

Quick Start - All Modes

LocationPickerPlusUnifiedWidget(
  mode: LocationPickerMode.all, // Show all 3 tabs
  googlePlacesApiKey: 'your-api-key',
  allowedCountries: ['India', 'United States'], // Optional restriction
  lockFieldsForGooglePlaces: true, // Default: true
  onLocationSelected: (location) {
    print('Selected: ${location?.address}');
    print('Source: ${location?.addressSource}'); // googlePlaces, manualEntry, or gpsLocation

    if (location?.addressSource == AddressSource.googlePlaces) {
      print('Address from Google Places - fields are locked');
    } else {
      print('Manual/GPS address - fields are editable');
    }
  },
)

Google Places Only Mode

LocationPickerPlusUnifiedWidget(
  mode: LocationPickerMode.googlePlaces,
  googlePlacesApiKey: 'your-api-key',
  country: 'US', // Restrict to US addresses
  placesTypes: ['establishment', 'geocode'],
  onLocationSelected: (location) {
    // Google Places result with locked fields in manual entry
  },
)

Manual Entry with Country Restrictions

LocationPickerPlusUnifiedWidget(
  mode: LocationPickerMode.manualEntry,
  allowedCountries: ['IN', 'US', 'CA'], // ISO codes or full names
  lockFieldsForGooglePlaces: false, // Allow editing Google Places results
  onLocationSelected: (location) {
    // Manual entry result - always editable
  },
)

GPS + Manual Entry (No Google Places)

LocationPickerPlusUnifiedWidget(
  mode: LocationPickerMode.all,
  googlePlacesApiKey: null, // Disable Google Places tab
  autoDetectOnInit: true, // Auto-detect GPS on load
  allowedCountries: ['India', 'United States'],
  onLocationSelected: (location) {
    // GPS or manual entry result
  },
)

Address Source Tracking

onLocationSelected: (LocationResult? location) {
  switch (location?.addressSource) {
    case AddressSource.googlePlaces:
      print('🌐 From Google Places - High accuracy, fields locked');
      break;
    case AddressSource.manualEntry:
      print('✏️ Manual entry - User can edit all fields');
      break;
    case AddressSource.gpsLocation:
      print('📍 From GPS - Detected location, fields editable');
      break;
  }
}

📍 Traditional Location Picker #

Basic Usage

LocationPickerWidget(
  onCountryChanged: (country) {
    print('Selected country: ${country?.name}');
  },
  onStateChanged: (state) {
    print('Selected state: ${state?.name}');
  },
  onCityChanged: (city) {
    print('Selected city: ${city?.name}');
    // Access latitude/longitude from city data
    if (city?.latitude != null) {
      print('City coordinates: ${city?.latitude}, ${city?.longitude}');
    }
  },
)

Autocomplete Mode (Real-time suggestions as you type)

LocationPickerWidget(
  useAutocomplete: true, // Enable autocomplete mode
  countryHint: 'Type country name...',
  stateHint: 'Type state name...',
  cityHint: 'Type city name...',
  onCountryChanged: (country) {
    // Handle country selection
  },
)

LocationPickerWidget(
  useAutocomplete: false, // Traditional dropdown mode
  theme: LocationPickerTheme.materialTheme().copyWith(
    showFlags: true,
    showPhoneCodes: true,
    borderRadius: BorderRadius.circular(12),
  ),
  countryLabel: 'Country',
  stateLabel: 'State/Province',
  cityLabel: 'City',
  onCountryChanged: (country) {
    // Handle country selection
  },
)

Country Only Picker #

LocationPickerWidget(
  useAutocomplete: true, // Or false for dropdown
  showState: false,
  showCity: false,
  countryHint: 'Type country name...',
  onCountryChanged: (country) {
    // Handle country selection
  },
)

Horizontal Layout #

Row(
  children: [
    Expanded(
      child: LocationPickerWidget(
        showState: false,
        showCity: false,
        countryLabel: 'Country',
      ),
    ),
    SizedBox(width: 16),
    Expanded(
      child: LocationPickerWidget(
        showCountry: false,
        showCity: false,
        stateLabel: 'State',
      ),
    ),
  ],
)

🔄 Combining Both Widgets #

You can use both widgets together for maximum flexibility:

Column(
  children: [
    // Live location detection
    LocationDetectorWidget(
      mode: LocationDetectorMode.currentLocation,
      onLocationChanged: (location) {
        // Auto-fill traditional picker based on detected location
      },
    ),

    SizedBox(height: 20),

    // Traditional picker for manual selection
    LocationPickerWidget(
      useAutocomplete: true,
      onCountryChanged: (country) {
        // Handle manual selection
      },
    ),
  ],
)

Customization #

Available Themes #

// Default theme
LocationPickerTheme.defaultTheme()

// Material Design theme
LocationPickerTheme.materialTheme()

// Cupertino theme
LocationPickerTheme.cupertinoTheme()

// Custom theme
LocationPickerTheme(
  inputDecoration: InputDecoration(
    border: OutlineInputBorder(),
    contentPadding: EdgeInsets.all(16),
  ),
  dropdownBackgroundColor: Colors.white,
  itemHighlightColor: Colors.blue.withOpacity(0.1),
  borderRadius: BorderRadius.circular(8),
  elevation: 4,
  showFlags: true,
  showPhoneCodes: false,
  maxHeight: 250,
  animationDuration: Duration(milliseconds: 200),
)

Input Modes #

Autocomplete Mode (`useAutocomplete: true`) #

Real-time suggestions appear as you type
No Enter key required - suggestions show instantly
Debounced for performance - optimized for smooth typing
Smart relevance sorting - exact matches first, then starts-with, then contains
Auto-clear functionality - click X to clear selection

Dropdown Mode (`useAutocomplete: false`) #

Traditional dropdown with search functionality inside
Click to open dropdown with search box
Keyboard navigation support
More familiar UX for users expecting dropdowns

Widget Parameters #

Parameter	Type	Description
`useAutocomplete`	`bool`	Enable autocomplete mode (true) or dropdown mode (false). Default: true
`showCountry`	`bool`	Show country picker. Default: true
`showState`	`bool`	Show state picker. Default: true
`showCity`	`bool`	Show city picker. Default: true
`countryHint`	`String?`	Hint text for country field
`stateHint`	`String?`	Hint text for state field
`cityHint`	`String?`	Hint text for city field
`theme`	`LocationPickerTheme?`	Custom theme for styling
`onCountryChanged`	`Function(CountryModel?)?`	Callback when country is selected
`onStateChanged`	`Function(StateModel?)?`	Callback when state is selected
`onCityChanged`	`Function(CityModel?)?`	Callback when city is selected

Models #

CountryModel #

CountryModel(
  id: '1',
  sortName: 'US',
  name: 'United States',
  phoneCode: '1',
  flagEmoji: '🇺🇸',
  capital: 'Washington, D.C.',
  currency: 'USD',
)

StateModel #

StateModel(
  id: '1',
  name: 'California',
  countryId: '1',
  stateCode: 'CA',
  type: 'State',
)

CityModel #

CityModel(
  id: '1',
  name: 'Los Angeles',
  stateId: '1',
  latitude: '34.0522',
  longitude: '-118.2437',
  isCapital: false,
)

🆕 LocationModel (Live Location) #

LocationModel(
  latitude: 34.0522,
  longitude: -118.2437,
  address: '123 Main St, Los Angeles, CA 90210, USA',
  street: '123 Main St',
  locality: 'Los Angeles',        // City
  administrativeArea: 'CA',       // State
  country: 'United States',
  postalCode: '90210',
  countryCode: 'US',
)

🔥 LocationResult (NEW v2.1.0 - Unified Widget) #

LocationResult(
  latitude: 34.0522,
  longitude: -118.2437,
  address: '123 Main St, Los Angeles, CA 90210, USA',
  city: 'Los Angeles',
  state: 'California',
  country: 'United States',
  postalCode: '90210',
  addressSource: AddressSource.googlePlaces, // googlePlaces, manualEntry, or gpsLocation
)

AddressSource Enum #

enum AddressSource {
  googlePlaces,  // Address selected from Google Places dropdown
  manualEntry,   // User manually entered address
  gpsLocation,   // Address detected from GPS coordinates
}