Adding multiple markers in Google Maps API v2 Android

Question

I want to add multiple markers in my map, but I don\'t know the way.

At the moment, I\'m using this, and it works correctly:

Marker m1 = googleMap.ad         


        

Answer 1

It depends on the source of your data. The better way is to make your custom object to store data. For example:

public class MyMarkerData {
        LatLng latLng;
        String title;
        Bitmap bitmap;

        public LatLng getLatLng() {
            return latLng;
        }

        public void setLatLng(LatLng latLng) {
            this.latLng = latLng;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public Bitmap getBitmap() {
            return bitmap;
        }

        public void setBitmap(Bitmap bitmap) {
            this.bitmap = bitmap;
        }
    }

Then, you can write some method to convert data from your external file to list of your custom data objects (but I think it is out of scope of this question).

Then just pass this data to your marker-drawing method and loop through it. It's a good practice thought to save your markers in some arraylist or map(object, marker) too, then you can easily access it.

Something like that:

    HashMap mDataMap = new HashMap<>();

        public void drawMarkers(ArrayList data) {
                Marker m;
                for (MyMarkerData object: data) {
                    m = googleMap.addMarker(new MarkerOptions()
                            .position(object.getLatLng())
                            .title(object.getTitle())
                            .icon(BitmapDescriptorFactory.fromBitmap(object.getBitmap()));

                    mDataMap.put(m, object);
                }
            }