Demo application for CN1OfflineMaps

OfflineMapsDemo.java

package ca.weblite.offlinemaps.demo;

import ca.weblite.codename1.mapbox.MBTilesProvider;
import com.codename1.io.ConnectionRequest;
import com.codename1.io.Log;
import com.codename1.io.NetworkManager;
import com.codename1.maps.MapComponent;
import com.codename1.ui.Button;
import com.codename1.ui.Display;
import com.codename1.ui.Form;
import com.codename1.ui.Label;
import com.codename1.ui.events.ActionEvent;
import com.codename1.ui.events.ActionListener;
import com.codename1.ui.layouts.BorderLayout;
import com.codename1.ui.plaf.UIManager;
import com.codename1.ui.util.Resources;
import java.io.IOException;
import java.io.InputStream;


public class OfflineMapsDemo {

    private Form current;
    MBTilesProvider provider;
    static String mapName = "ocenstest.cn1tiles";
    static String mapUrl = "http://downloads.ocens.com/downloads/support/ocenstest.cn1tiles";
    public void init(Object context) {
        try {
            Resources theme = Resources.openLayered("/theme");
            UIManager.getInstance().setThemeProps(theme.getTheme(theme.getThemeResourceNames()[0]));
        } catch (IOException e) {
            e.printStackTrace();
        }
        
    }

    public void start(){
        
        Form hi = new Form("Start");
        Button loadbtn = new Button("Load map");
        loadbtn.addActionListener(new ActionListener(){

            public void actionPerformed(ActionEvent evt) {
                startMap();
            }
            
        });
        hi.addComponent(loadbtn);
        hi.show();
    }
    
    
    public void startMap() {
        try {
            
            
            
            if (MBTilesProvider.isLoaded(mapName)) {
                // The map named "output.cn1tiles" is already loaded…
                // We can just create a provider for this map.
                Log.p("Loaded... just setting the provider");
                provider = new MBTilesProvider(mapName);
            } else {
                
                Log.p("Not loaded... we will load it from the network");
                // The map specified hasn't been created yet…
                // We can create this in a number of ways including:
                // From resources (i.e. include the output.cn1tiles file as part of
                // the application bundle):
                ConnectionRequest conn = new ConnectionRequest(){

                    @Override
                    protected void readResponse(InputStream input) throws IOException {
                        provider = MBTilesProvider.create(mapName, input);
                        Display.getInstance().callSerially(new Runnable(){

                            public void run() {
                                showMap();
                            }
                            
                        });
                    }

                    
                    
                };
                conn.setUrl(mapUrl);
                NetworkManager.getInstance().addToQueue(conn);
               
                
                //provider = MBTilesProvider.createFromResource("/output.cn1tiles");
                
            }
            
            if ( provider == null ){
                Form wait = new Form("Please Wait...");
                Label waitingLbl = new Label("Loading map tiles. This may take time.");
                wait.addComponent(waitingLbl);
                wait.show();
            } else {
                showMap();
            }
            
           
        } catch (IOException ex) {
            Log.e(ex);
        }
    }
    
    public void showMap(){
        MapComponent map = new MapComponent(provider, provider.center(), provider.minZoomLevel(), false);
        Form hi = new Form("Offline Map Test");
        hi.setScrollable(false);
        hi.setLayout(new BorderLayout());
        hi.addComponent(BorderLayout.CENTER, map);
        hi.show();
        
    }

    public void stop() {
        current = Display.getInstance().getCurrent();
    }

    public void destroy() {
    }

}