Location and GPS in Flutter - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to import the Flutter package that provides location services.

Flutter

import '[1]';

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Apackage:flutter/widgets.dart

Bpackage:flutter/material.dart

Cpackage:location/location.dart

Dpackage:flutter/services.dart

Attempts:

3 left

💡 Hint

Common Mistakes

Importing material.dart instead of location.dart

Using widgets.dart which does not provide location features

The location package is used to access GPS and location services in Flutter apps.

2fill in blank

medium

Complete the code to create a Location instance to access GPS data.

Flutter

final location = [1]();

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ALocationManager

BLocation

CGeoLocator

DGPSService

Attempts:

3 left

💡 Hint

Common Mistakes

Using classes not defined in the location package

Trying to instantiate a service class that does not exist

The Location class from the location package is used to get GPS data.

3fill in blank

hard

Fix the error in the code to request permission to access location.

Flutter

bool _serviceEnabled = await location.[1]();

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ArequestLocationPermission

BrequestPermission

CcheckPermission

DrequestService

Attempts:

3 left

💡 Hint

Common Mistakes

Using requestPermission() which asks for permission but not service status

Using checkPermission() which only checks permission status

The method requestService() asks the user to enable the location service if it is off.

4fill in blank

hard

Fill both blanks to get the current location coordinates asynchronously.

Flutter

LocationData currentLocation = await location.[1]();
double latitude = currentLocation.[2];

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AgetLocation

Blatitude

CgetCurrentPosition

Dlongitude

Attempts:

3 left

💡 Hint

Common Mistakes

Using getCurrentPosition() which is from a different package

Accessing longitude instead of latitude for latitude value

getLocation() fetches the current location data, and latitude accesses the latitude value.

5fill in blank

hard

Fill all three blanks to listen for location changes and update UI accordingly.

Flutter

location.[1].listen((LocationData currentLocation) {
  setState(() {
    _latitude = currentLocation.[2];
    _longitude = currentLocation.[3];
  });
});

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AonLocationChanged

Blatitude

Clongitude

DgetLocation

Attempts:

3 left

💡 Hint

Common Mistakes

Using getLocation instead of onLocationChanged for continuous updates

Mixing up latitude and longitude properties

onLocationChanged is a stream that emits location updates. Inside the listener, latitude and longitude are accessed to update the UI.