动态更新swing JXMapKit中的标记

Question

我正在寻找一种方法，以编程方式将路点添加到使用JXMapKit(在Java Swing工具包上运行)显示的地图。我想在列表中提供一个地理坐标列表

Answer 1

您必须通过WaypointPainter提供Waypoints，并将此画家传递给JXMapViewer。默认情况下，WaypointPainter接受Set<Waypoint>，所以我们可以用我们自己的类来扩展WaypointPainer，而不是接受List。

import org.jdesktop.swingx.JXMapKit;
import org.jdesktop.swingx.JXMapViewer;
import org.jdesktop.swingx.mapviewer.DefaultWaypoint;
import org.jdesktop.swingx.mapviewer.Waypoint;
import org.jdesktop.swingx.mapviewer.WaypointPainter;
import javax.swing.*;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
class CustomPainter extends WaypointPainter<JXMapViewer> {
    public void setWaypoints(List<? extends Waypoint> waypoints) {
        super.setWaypoints(new HashSet<Waypoint>(waypoints));
    }
}
public class Waypoints {
    public static void main(String[] args) {
        List<DefaultWaypoint> waypoints = new ArrayList<DefaultWaypoint>();
        waypoints.add(new DefaultWaypoint(51.5, 0));
        JXMapKit jxMapKit = new JXMapKit();
        jxMapKit.setDefaultProvider(JXMapKit.DefaultProviders.OpenStreetMaps);
        CustomPainter painter = new CustomPainter();
        painter.setWaypoints(waypoints);
        jxMapKit.getMainMap().setOverlayPainter(painter);
        final JFrame frame = new JFrame();
        frame.add(jxMapKit);
        frame.setSize(300, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                frame.setVisible(true);
            }
        });
    }
}