Remove previous Marker and add new Marker in Google Map v2

Question

I want to remove a current marker after long click on map anywhere and recreate a new marker at that point. I have cleared google map on long click on map and new marker is crea

Answer 1

At first clear the Google map, then add a new marker. Check the code below

mMap.clear();

//google map marker adding code here

Answer 2

Just clear the google map before adding marker. Like this:

@Override
public void onMapLongClick(LatLng latLng) {
    googleMap.clear();

    googleMap.addMarker(new MarkerOptions()
            .position(latLng)
            .title(latLng.toString())
            .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_RED)));
}

Answer 3

Just reposting the answer of Anthony.

The method signature for addMarker is:

public final Marker addMarker (MarkerOptions options) So when you add a marker to a GoogleMap by specifying the options for the marker, you should save the Marker object that is returned (instead of the MarkerOptions object that you used to create it). This object allows you to change the marker state later on. When you are finished with the marker, you can call Marker.remove() to remove it from the map.

As an aside, if you only want to hide it temporarily, you can toggle the visibility of the marker by calling Marker.setVisible(boolean).

You can find the answer here Remove a marker from a GoogleMap

Answer 4

Just creat a new marker object and before adding a new marker, remove the previous one

Marker marker;

MAP.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {

                @Override
                public void onMapLongClick(LatLng arg0) {
                    if (marker != null) {
                        marker.remove();
                    }
                    marker = MAP.addMarker(new MarkerOptions()
                            .position(
                                    new LatLng(arg0.latitude,
                                            arg0.longitude))
                            .draggable(true).visible(true));
                }
            });

EDIT

Do the same for OnMapClick

MAP.setOnMapClickListener(new OnMapClickListener() {
        @Override
        public void onMapClick(LatLng point) {
            // TODO Auto-generated method stub

                if (marker != null) {
                    marker.remove();
                }
            marker = MAP.addMarker(new MarkerOptions()
                    .position(currentPosition)
                    .snippet(
                            "Lat:" + location.getLatitude() + "Lng:"
                                    + location.getLongitude())
                    .icon(BitmapDescriptorFactory
                            .defaultMarker(BitmapDescriptorFactory.HUE_AZURE))
                    .title("ME"));
            Log.e("lat", "" + point);

        }
    });

Answer 5

For the people who have tried the first solution in this question and you get the error of Marker has not been intialized.

Because, we are comparing the marker and null. When we have not even intialized the marker in the first place.

Solution:

Int mMarkerCount = 0; //Global Variable
Marker mMarker; //Global Variable

if(mMarkerCount > 0){
    if(mMarker != null){
        mMarker.remove();              
    }
}

mMarker = mMap.addMarker(new MarkerOptions().position(latLng));
mMarkerCount++;

The Solution for the question:

Int mMarkerCount = 0; //Global Variable
Marker mMarker;

mMap.setOnMapClickListener(new OnMapClickListener() {
    @Override
    public void onMapClick(LatLng latlng) {
        if(mMarkerCount > 0){
            if(mMarker != null){
                mMarker.remove();              
            }
        }

        mMarker = mMap.addMarker(new MarkerOptions().position(latLng));
        mMarkerCount++;  
    }
});

In the beginning, the count is going to be zero. So, the marker remove method will not be called. Once, the marker is intialized and the count is incremented. We can remove the previous marker by the help of the remove method and create a new marker as shown in the code.

Answer 6

googleMap.clear();

@Override
public void onMapReady(GoogleMap googleMap) {

    MarkerOptions markerOptions = new MarkerOptions();
    LatLng latLng = new LatLng(address.getLat(), address.getLng());
    markerOptions.position(latLng);
    googleMap.animateCamera(CameraUpdateFactory.newLatLngZoom(latLng, 5));
    googleMap.addMarker(markerOptions);

    googleMap.setOnMapClickListener(new GoogleMap.OnMapClickListener() {
        @Override
        public void onMapClick(LatLng latLng) {
            if (touchMarker != null) {
                touchMarker.remove();
            }
            googleMap.clear();
            MarkerOptions markerOptions = new MarkerOptions().position(latLng);
            touchMarker = googleMap.addMarker(markerOptions);
            address.setLat(touchMarker.getPosition().latitude);
            address.setLng(touchMarker.getPosition().longitude);
           
        }
    });
}