I'm new to Open Street Map. I want to get the way points between source location and destination location using OSM in android. Is there any API in OSM to get the way points? I don't want to show the map on screen. Only need way points.
Someone please suggest any sort of solution or code for that.
Just choose one of the many online routers for OSM, for example GraphHopper or OSRM.
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Alongside with my friends I am about to develop an android application. The application will use maps a lot, finding routes, placing markers, drawing predefined routes, stuff like that.
There is this Google Maps APIv2. So I tried it, write some code and looks good. I am able to place markers and draw polylines, however my application will have some predefined routes. One route is set of LatLng points. So I just add these points to PolylineOptions and add it to map. Great, it works.
But these predefined routes will be created in web-based application also using Google Maps APIv2 or similar api/library. Some streets are not straight they are curved so you need to create a lot of LatLng points to get it look nice which is very important. I can do this but I want to put only two LatLng points - at the beginning of the street and at the end.
Here is the image:
On the left, route has only two LatLng points (red dots) and that is desired shape of line. On the right same route with 2 LatLng points gives me route coloured in light blue, and this is what actually happens if I just add polyline to GoogleMap object. In order to create same effect as in left image, I need to create many LatLng (red dots) points which is not appropriate for those who will create these routes. So this leads us to routing problem which can be solved by using Google Directions API. Which solves the problem of drawing routes with less markers. Basically what I understood, this API for directions actually creates a lot of these LatLng points that I draw using for-each loop as seen on right part of picture above. And I need to contact Google Web Service for this so I need to have Internet connection - and this is the problem.
Sometimes internet will not be available hence I need some alternative solution. I've heard of Open Street Maps, but I am not sure how to use it and does it needs internet connection for creating these routes.
Is there any free library that offers offline routing and showing maps offline? Basically all map interactions must be done without use of internet.
But it is understandable if internet connection is needed only for the first run of application as it is needed for Google Maps APIv2, well application crashes until I turn on internet, after which any next run I do not need internet..
A web based application will be made for creating these routes and routes will be created by users for whom we develop this application. And as users can be very annoying they will demand some user-friendly and easy interface for creating routes. Telling them that they need to create 100 to 500 points for each route, and if there is 60-70 routes they will gladly say NO to our application.
Any advice? If it is possible, I can write my own routing algorithm for Google Maps to work offline, I am very skilful at "Algorithms and Data Structures" - any guides/tutorials for this? But I guess this map is just set of tiles, and does not have necessary information for finding route.... So please correct If I am mistaken for anything.
You can use the Scout SDK (provides a free usage quota) as it offers full offline maps, routing & navigation.
Have a look into the open source projects GraphHopper, Mapsforge and OpenScience-VTM which can do routing and/or maps offline. And all use OpenStreetMap data. Other projects exists of course, have a look here and here.
Also have a look into the GraphHopper map matching component which could be interesting for your specific use case and can work offline too.
(Note I'm the author of GraphHopper)
If it is possible, I can write my own routing algorithm for Google Maps to work offline
No you can't, the data is not open nor you can buy the data to my knowledge.
Another option is OsmAnd. The OSM wiki also has some information about OsmAnd and even more information about OSM on Android in general as well as pages about rendering and routing.
I am a student working on an android application related to navigation trying to learn android programming. The application needs to search the geo-locations (latitude,longitude) among the ones available and find out which ones fall along the route the user is travelling.
For example, if the user is travelling from 37.422,-122.084058 to 37.422,-122.084058, then I should be able to search the points that fall along this route from the set of points that I have. How do I do that?
I am getting the route direction of the user from the google api
https://maps.googleapis.com/maps/api/directions/json?origin=Googleplex&destination=infinityloop=&key=your_api_key
I get the route in the form of legs and I have a set of geo-locations. I would like to find which geo-locations fall along the route of the user. Is there any way I can find it or any API that I can use ?
Any help is greatly appreciated. Thanks in advance :)
There's already a lib for this: use isLocationOnPath with the polyline you are getting from directions api response.
Build a LatLngBound using the two points and pass in the geolocation point you want to check into LatLngBounds.contain().
I am developing an app for local bus system and as per requirement, a bus can have multiple routes from one location to other. So i have to implement methodology like
fetch user's current location
get destination from user and accordingly show user all possible routes to destination
show all paths on map simulataneously with optimal shortest path highlighted with different color.
currently, I have progressed to basic application having functionality
get user's current location and pin point it with marker on google map
getting single path to destination (using google maps api)
plotting it on map by polyline. I have used one tutorial that implements navigation from source to destination.
Now I have to find all possible routes from source to destination. searched for answer but most answers referred to apply single path which I have already done. Any help will be much more appreciated.. Thanks in advance...
Use Google Directions API with parameter 'alternatives=true'.
I want to draw route between two points. I did this successfully. But how to know if the user deviated from drawn path or not. So that I can suggest user to notify alternative path to reach their destination. Like what google map navigation did. Am working on it and till now I could't find any answer for this. Please suggest some approach to me to find deviation from selected route.
Thanks in advance.
Use PolyUtil.isLocationOnPath(...) from Google Maps Android API utility library.
do you know how can we create our map and show the ways from a certain locations to destinations ? Without using google map , just using a picture of a map , is there any way to draw routes on it?I am not asking projects or codes , just need some suggestions related to drawings and considering the obstacles in the way ?Thank you
You should have your way points in somewhere(maybe in db or in xml file etc) and also for getting map base you should have a map provider like yahoo, bing, google or openstreetmap(which is free to use - no api key needed considering others)
after having these two sources you can use Geoserver(which is opensource map data manipulater and provider) to put these sources together and get them as map base image.
considering your "just using a picture of a map" is an owerwellming issue. Because you will have to do some calculation to find where to put your points programatically. So Geoserver does that automatically.
also I suggest you to hava a look at osmdroid and osmbonuspack they may help.