How to find distance from polyline in google map in android using map apiV2 ? I want to find distance when user start moving from one location to another .
I used the Calculate distance in meters when you know longitude and latitude in java but it takes distance between two lat-long not as per user
moves in map. Please help me if anyone knows how to find distance using polyline.
For finding distance from your polyline you can use PolyUtil class which contains one method distanceToLine .
implementation'com.google.maps.android:android-maps-utils:0.5+'
add this library in your build.gradle.
For more you can use Google map utility class
https://developers.google.com/maps/documentation/android-api/utility/
For this you need to use thread. In that at regular interval you should find the distance between current coordinates and last saved coordinate.
Raw code:
Coordinate current, last;
Distance D = 0;
while (true) {
wait(10000);
last = current;
current = getNewCordinate;
d = D + distFrom(current, last);
}
This logic will help.
Based on the answer given by Gevaria Purva I found a more appropriate method on PolyUtil named isLocationOnPath.
For the third parameter most likely you want to pass true.
Related
I'm developing an Android app that tracks the users location. I have it running locally so my LatLng are getting stored in an array :
ArrayList<LatLng> points = new ArrayList<>();
In onLocationChanged it then uses this to draw a poly line, this all works perfect for me. I want to calculate the distance of the entire journey. Is there a way to do this using my array?
You could make a loop that go through your array and compute the distance between two consecutive points. Then add every distance computed to obtain the whole trip distance. This should look like this (in pseudo code) :
totalDistance;
for(points in listOfPoints){
nextPoint = listOfPoints.indexof(point + 1);
distance = computeDistance(point, nextPoint);
totalDistance.add(distance);
}
For calculation distance between location points, you need at least two points.
Calculation can be found here:
https://stackoverflow.com/a/365853/1537916
I try to get the distance between two points by showing them together with a polyline. One marker is permanently somewhere and the other the user chooses the place they want when clicking on the map. I tried with many codes obtained from the Internet but for me neither works or just gives me the marker of a place with the latutude and longitude. I want to use retrofit 2 to bring the information. Can anyone help me with that?
On clicking on map you are placing marker, So if you want to get location of that marker then simply you can got that marker position using that marker object like this.
Double latitude = marker.getPosition().latitude;
Double longitude = marker.getPosition.longitude;
and you have already one location so you can find distance between two locations using this.
locationFrom.distanceTo(locationDestination);
here locationFrom is your source location from where you want to find distance and locationDestination is your destination location to where you find distance.
My app gets updated GPS coordinates periodically which I show using a Marker on map. I need to move the marker to a new position if the new GPS coordinates are different then what Marker is currently showing.
The problem is that comparing Marker.getPosition() is more accurate while LatLang is not, hence sometimes even when they are the same, my logic says they are different.
How to solve this issue?
Please note that the same LatLang i assign to Marker.
You can consider that two LatLngs are virtually the same if the distance between them is less than a given tolerance.
You can use the SphericalUtil.computeDistanceBetween method from the Google Maps Android API Utility Library
float YOUR_TOLERANCE = 1; // 1 meter
if (SphericalUtil.computeDistanceBetween(pos, buslatLng) < YOUR_TOLERANCE) {
// Both locations are considered the same
}
Hi I am new to android development.
I am on college project its based on location which is need to find list of latitude and longitude in between two points.
Given Starting position is 12.990143,80.215784 and destination position is 12.992595,80.217618.
Over the past days i search the google, i found so many links to find distance between locations and mid point. I cant able to find solution for my problem.
Please suggest some solution for this problem. I am struggling over days to find solution for this.
Thanks in advance
You can use the SphericalUtil.interpolate method from the Google Maps API Utility Library.
For example you can find a LatLng that is at 1/5 of the distance between your starting position and your destination by doing
LatLng origin = new LatLng(12.990143,80.215784);
LatLng destination = new LatLng(12.992595,80.217618);
LatLng result = SphericalUtil.interpolate(origin, destination, 0.2);
You can use the google Directions api to obtain a full PolyLine of the path. You can objain a JSON object and parse it to obtain locations in the path.
http://maps.googleapis.com/maps/api/directions/json?origin=12.990143,80.215784&destination=12.992595,80.217618&mode=driving
This will return a full JSON result which contains everything you would need to find the whole route to all the points falling on it.
You can look more into it on:
https://developers.google.com/maps/documentation/directions/intro#Introduction
I am developing an application that shows the distance between the user and multiple locations (such as foursquare in the image below) on android, I am using eclipse and would like to know how to calculate the distance between various points. Thank you!
Image:
http://i.stack.imgur.com/rsWmO.jpg
There are probably many ways to get this done, here's an option.
You could use the distanceTo() method. If you want more than one distance, simply use a loop to repeat it until you've calculated the distances between all the Locations you have at hand.
If you're using Google Maps, you can use a Distance Matrix
https://developers.google.com/maps/documentation/distancematrix/
https://developers.google.com/maps/documentation/javascript/distancematrix
Here I am providing you some sample code for Distance calculation. I have done like this in my project. Here distanceTo() method will return you the distance in double.
private Location currentLocation, distanceLocation;
double distance = 0;
//set your current location
currentLocation.setLatitude(currentLat);
currentLocation.setLongitude(currentLong);
//set your destination location
distanceLocation = new Location("");
distanceLocation.setLatitude(destinatioLat);
distanceLocation.setLongitude(destinationLong);
distance = currentLocation.distanceTo(distanceLocation)/1000;
Same for more then one location you can use Array for storing distance. Its on you how you want to use it as per your requirement.
Hope this will help you.