java - JMapViewer 为离线 View 添加图 block

Question

您好，我正在 Java 中使用此示例来尝试加载 OpenStreetMaps 离线图块，

例如我在 C:/OSM/tiles/上有我的瓷砖

但我需要知道如何在 map (JMapViewer)类中添加此信息以在本地加载图块。

非常感谢您的帮助，这是我的来源:

//License: GPL. Copyright 2008 by Jan Peter Stotz

import org.openstreetmap.gui.jmapviewer.JMapViewer;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

/**
 *
 * Demonstrates the usage of {@link JMapViewer}
 *
 * @author Jan Peter Stotz
 *
 */
public class Demo extends JFrame {

    public Demo() {
        super("JMapViewer Demo");
        setSize(400, 400);
        final JMapViewer map = new JMapViewer();
        setLayout(new BorderLayout());
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setExtendedState(JFrame.MAXIMIZED_BOTH);
        JPanel panel = new JPanel();
        add(panel, BorderLayout.NORTH);
        final JCheckBox showMapMarker = new JCheckBox("Map markers visible");
        showMapMarker.setSelected(map.getMapMarkersVisible());
        showMapMarker.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                map.setMapMarkerVisible(showMapMarker.isSelected());
            }
        });
        panel.add(showMapMarker);
        final JCheckBox showTileGrid = new JCheckBox("Tile grid visible");
        showTileGrid.setSelected(map.isTileGridVisible());
        showTileGrid.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                map.setTileGridVisible(showTileGrid.isSelected());
            }
        });
        panel.add(showTileGrid);
        final JCheckBox showZoomControls = new JCheckBox("Show zoom controls");
        showZoomControls.setSelected(map.getZoomContolsVisible());
        showZoomControls.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                map.setZoomContolsVisible(showZoomControls.isSelected());
            }
        });
        panel.add(showZoomControls);
        add(map, BorderLayout.CENTER);

        //
//      map.addMapMarker(new MapMarkerDot(49.814284999, 8.642065999));
//      map.addMapMarker(new MapMarkerDot(49.91, 8.24));
//      map.addMapMarker(new MapMarkerDot(49.71, 8.64));
//      map.addMapMarker(new MapMarkerDot(48.71, -1));
//      map.addMapMarker(new MapMarkerDot(49.807, 8.644));

        map.setDisplayPositionByLatLon(-0.223056, -78.5126, 11);
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        new Demo().setVisible(true);
    }

}

Answer 1

一个不需要修改 JMapViewer 并重新编译它的更好的替代方法是提供您自己的 TileSource 实现，如图所示 here .

抢OfflineOsmTileSource ，并像博客文章所说的那样使用它。

简单而优雅。你所需要的只是一些本地存储的 osm tile，我假设你已经有了。