Loading nearest shops from current location in Android Map

Question

I'm need some help with load nearest shops. Currently I implemented to load all the shops from json which contains lat & long. But now I wanted to load all shops within 5km from current location. Some people suggest me to use distanceTo() for that, but I couldn't implement it. Please someone help with this issue?

Following code loads all the shops from the json (Works fine):

for(final Shop shop : this.response.shops){
            for(int i = 0; i < shop.getShopLat().size(); i++){
                map.addMarker(new MarkerOptions().position(new LatLng(Double.parseDouble(shop.getShopLat().get(i)), Double.parseDouble(shop.getShopLng().get(i)))).title(shop.getName()));
                map.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {

                    @Override
                    public View getInfoContents(Marker marker) {
                        // TODO Auto-generated method stub
                        return null;
                    }

                    @Override
                    public View getInfoWindow(Marker marker) {
                        // TODO Auto-generated method stub
                        return null;
                    }

                });

            }
        }

Edited:

LocationManager service = (LocationManager)     getActivity().getSystemService(getActivity().LOCATION_SERVICE);
    Criteria criteria = new Criteria();
    String provider = service.getBestProvider(criteria, false);
    Location userLocation = service.getLastKnownLocation(provider);

score 1 · Answer 1 · answered Jan 14 '14 at 17:25

1

U can use google api to achieve this

StringBuilder sb = new StringBuilder(
            "https://maps.googleapis.com/maps/api/place/nearbysearch/json?");
    sb.append("location=" + latitude + "," + longitude);
    sb.append("&radius=5000");
    sb.append("&types=" + placeType);
    sb.append("&sensor=true");
    sb.append("&key=Your Api Key");

here is a nice link , you can follow this

answered Jan 14 '14 at 17:25

Kunu

5,078
6
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That's nice, but I think he's reffering a group of shops he has in a DB. – Alejandro Cumpa Jan 14 '14 at 17:29
@ El_Mochiq: you are right. Waiting for you answer. Thanks in advanced – Kabe Jan 14 '14 at 17:31
check this [link](http://stackoverflow.com/questions/6095919/android-how-to-get-current-location-latitude-and-longitude) – Kunu Jan 14 '14 at 17:44

score 0 · Answer 2 · edited May 23 '17 at 12:21

0

First, you have to get the users location, there are many ways to achieve that, and it isn't as simple as it looks if you want to get the best and most accurate location, check this thread, really helpful, after that I think you should use something like this:

float[] results = new float[3];
Location.distanceBetween(userLocation.getLatitude(), userLocation.getLongitude(), Double.parseDouble(shop.getShopLat().get(i), Double.parseDouble(shop.getShopLng().get(i)), results);
//results[0] = distance in meters

So just put an if inside the for statement.

for(final Shop shop : this.response.shops){
   for(int i = 0; i < shop.getShopLat().size(); i++){
    float[] results = new float[3];
        Location.distanceBetween(userLocation.getLatitude(), userLocation.getLongitude(), Double.parseDouble(shop.getShopLat().get(i), Double.parseDouble(shop.getShopLng().get(i)), results);
        if(results[0]<=5000)
        {   
                    map.addMarker(new MarkerOptions().position(new LatLng(Double.parseDouble(shop.getShopLat().get(i)), Double.parseDouble(shop.getShopLng().get(i)))).title(shop.getName()));
                    map.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter()     
               {    
                    @Override
                    public View getInfoContents(Marker marker) {
                        // TODO Auto-generated method stub
                        return null;
                    }

                    @Override
                    public View getInfoWindow(Marker marker) {
                        // TODO Auto-generated method stub
                        return null;
                    }

                });

            }
          }
        }

edited May 23 '17 at 12:21

Community

1
1

answered Jan 14 '14 at 17:14

Alejandro Cumpa

2,118
1
24
45

Thanks for your answer but how do I define **userLocation** – Kabe Jan 14 '14 at 17:19
I thought that you implemented how to get the current location. Let me update my answer. – Alejandro Cumpa Jan 14 '14 at 17:21
Nope this is where I confused getting lat & long from current location and implementing the distance. – Kabe Jan 14 '14 at 17:24
Isn't showing anything, shows all or what? Are you running in a device on debug mode? The user location exists? – Alejandro Cumpa Jan 14 '14 at 17:52
Showing current location only. Markers not loading. running on device in normal and debug modes. No errors found – Kabe Jan 14 '14 at 17:54
Can you check what results[0] is for each point? Log.d("results of distanceBetween", results[0]) – Alejandro Cumpa Jan 14 '14 at 18:07
I couldn't use float in Log. SO used system.out: 01-14 18:18:12.690: I/System.out(31019): Not a DRM File, opening notmally 01-14 18:18:12.690: I/System.out(31019): buffer returned – Kabe Jan 14 '14 at 18:20
Sorry, this should work Log.d("results of distanceBetween", "Distance: " + results[0]) – Alejandro Cumpa Jan 14 '14 at 18:24
Thanks. But I couldn't see any log output – Kabe Jan 14 '14 at 18:32
In try-catch method getting following error: **Google Play Services missing !** But still current location showing fine – Kabe Jan 14 '14 at 18:40
The problem is finding lat & long for current location. How do I fix it – Kabe Jan 14 '14 at 18:56
try passing true like this: String provider = service.getBestProvider(criteria, true); – Alejandro Cumpa Jan 14 '14 at 19:29

Loading nearest shops from current location in Android Map

2 Answers2