How to Calculate Distance Between two Locations in Android?

Calculating the distance between two locations (defined by their latitude and longitude) on Android can be done in several ways. One common method is to use Android's Location class. Another approach involves using the Google Maps API if you're already incorporating Google Maps into your app.

Here's a guide for both methods:

1. Using Android's `Location` class:

This method doesn't rely on any third-party services and uses the built-in Android SDK:

import android.location.Location

fun distanceBetweenLocations(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Float {
    val location1 = Location("locationA")
    location1.latitude = lat1
    location1.longitude = lon1

    val location2 = Location("locationB")
    location2.latitude = lat2
    location2.longitude = lon2

    return location1.distanceTo(location2) // This will return the distance in meters
}

2. Using Google Maps API:

For this method, you'll need to have Google Maps set up in your Android app.

First, add the required dependency to your build.gradle:

implementation 'com.google.android.gms:play-services-maps:latest_version'

Then, you can use the SphericalUtil class from Google Maps Android API Utility library to compute the distance:

implementation 'com.google.maps.android:android-maps-utils:latest_version'

Now, you can use the computeDistanceBetween method:

import com.google.android.gms.maps.model.LatLng
import com.google.maps.android.SphericalUtil

fun distanceBetweenLocations(lat1: Double, lon1: Double, lat2: Double, lon2: Double): Double {
    val point1 = LatLng(lat1, lon1)
    val point2 = LatLng(lat2, lon2)

    return SphericalUtil.computeDistanceBetween(point1, point2) // This will return the distance in meters
}

Note that the Location class method calculates the distance based on a simplified Earth model. In contrast, the SphericalUtil method from the Google Maps utility library computes the distance over the Earth's spheroid, so the two methods might yield slightly different results.

Remember, if you're using Google Maps API, you should consider the quota limits and potential costs associated with extensive API usage. Always refer to the official Google Maps API documentation for current information.

Android calculate distance between two locations:

Description: Calculate the distance between two locations in Android using their latitude and longitude coordinates. This involves using mathematical formulas like the Haversine formula.
Code:

double distance = calculateDistance(
    40.748817, -73.985428,  // Latitude and longitude of location 1
    34.052235, -118.243683  // Latitude and longitude of location 2
);

// Function to calculate distance using Haversine formula
private double calculateDistance(double lat1, double lon1, double lat2, double lon2) {
    // Haversine formula implementation
    // ...

    return resultDistance;  // Distance in kilometers or miles
}

How to Calculate Distance Between two Locations in Android?

1. Using Android's Location class:

2. Using Google Maps API:

1. Using Android's `Location` class: