Using the mouseClicked method in the JMapViewer does not update the getPosition return value

Question

I have create a MouseInputAdapter listener to get coordinates in a JMapViewer map and create the MapMarker on that spot but even though I click on a different possition the value of the map.getPossition() method does not updates with the new values.

My listener code:

@Override
public void mouseClicked(MouseEvent e) {
if (e.getButton() == MouseEvent.BUTTON1){
    Coordinate markeradd = map.getPosition();
    System.out.println(map.getPosition());
    map.addMapMarker(new MapMarkerDot(markeradd));
}

The system.out.print is there to print the value returned by the getPosition(). When I click for the first time, I get a set of coordinates then wherever I click, I always get the same coordinates. example of five different position clicks:

Coordinate[56.159963018590744, 10.199775695800781]
Coordinate[56.159963018590744, 10.199775695800781]
Coordinate[56.159963018590744, 10.199775695800781]
Coordinate[56.159963018590744, 10.199775695800781]
Coordinate[56.159963018590744, 10.199775695800781]

I found out what happened. The map.getPosition() was always pointing to the centrer of the map even though the mouse was clicked in different positions on the map. — george kanakis, Feb 26 '15 at 14:27
Possible [duplicate](http://stackoverflow.com/q/24588492/230513). — trashgod, Feb 28 '15 at 03:10
I saw the post that you mark as possible duplicate before I post the question. It didn't solve the problem, I had! — george kanakis, Mar 01 '15 at 05:59

score 1 · Accepted Answer · edited May 23 '17 at 11:50

As you have observed, getPosition() "Calculates the latitude/longitude coordinate of the center of the currently displayed map area." You probably want

Coordinate getPosition(java.awt.Point mapPoint)

which "Converts the relative pixel coordinate … into a latitude / longitude coordinate." You can call it in your implementation of JMapController, as shown here for a subclass of DefaultMapController.

new DefaultMapController(map) {

    @Override
    public void mouseClicked(MouseEvent e) {
        System.out.println(map.getPosition(e.getPoint()));
    }
};

Using the mouseClicked method in the JMapViewer does not update the getPosition return value

1 Answers1