如何迭代在 ViewRestaurantList 中创建的 ArrayList 以在 map 上放置标记？

Question

Restaurant Class

package sg.edu.rp.c345.a01.hungrycomehere;

import android.os.Bundle;

import com.google.android.maps.GeoPoint;

public class Restaurant {

    // Declarations Fields
    String name;
    String address;
    String phoneNumber;
    String email;
    String url;
    String openingHours;
    String closingHours;
    GeoPoint latLong;

    // Constructor generated from Fields 
    public Restaurant(String name, String address, String phoneNumber,
            String email, String url, String openingHours, String closingHours,
            GeoPoint latLong) {
        super();
        this.name = name;
        this.address = address;
        this.phoneNumber = phoneNumber;
        this.email = email;
        this.url = url;
        this.openingHours = openingHours;
        this.closingHours = closingHours;
        this.latLong = latLong;
    }

    // A mapping from String values to various Parcelable types.
    // Construct from Bundle
    public Restaurant(Bundle b) {
        name = b.getString("restaurantName");
        address = b.getString("restaurantAddress");
        phoneNumber = b.getString("restaurantPhoneNumber");
        email = b.getString("restaurantEmail");
        url = b.getString("restaurantUrl");
        openingHours = b.getString("restaurantOpeningHrs");
        closingHours = b.getString("restaurantClosingHrs");
        latLong = new GeoPoint(b.getInt("restaurantLat"), b.getInt("restaurantLng"));
    }

    // Convert into bundle
    public Bundle getBundle() {
        Bundle bundle = new Bundle();
        bundle.putString("restaurantName", name);
        bundle.putString("restaurantAddress", address);
        bundle.putString("restaurantUrl", url);
        bundle.putString("restaurantEmail", email);
        bundle.putString("restaurantPhoneNumber", phoneNumber);
        bundle.putString("restaurantOpeningHrs", openingHours);
        bundle.putString("restaurantClosingHrs", closingHours);
        bundle.putInt("restaurantLat", latLong.getLatitudeE6());
        bundle.putInt("restaurantLng", latLong.getLongitudeE6());
        return bundle;
    }

    // Get, Set, toString!
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getPhoneNumber() {
        return phoneNumber;
    }

    public void setPhoneNumber(String phoneNumber) {
        this.phoneNumber = phoneNumber;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = url;
    }

    public String getOpeningHours() {
        return openingHours;
    }

    public void setOpeningHours(String openingHours) {
        this.openingHours = openingHours;
    }

    public String getClosingHours() {
        return closingHours;
    }

    public void setClosingHours(String closingHours) {
        this.closingHours = closingHours;
    }

    public GeoPoint getLatLong() {
        return latLong;
    }

    public void setLatLong(GeoPoint latLong) {
        this.latLong = latLong;
    }

    @Override
    public String toString() {
        return "Restaurant [name=" + name + ", address=" + address
                + ", phoneNumber=" + phoneNumber + ", email=" + email
                + ", url=" + url + ", openingHours=" + openingHours
                + ", closingHours=" + closingHours + ", latLong=" + latLong
                + "]";
    }

}

Restaurant List

package sg.edu.rp.c345.a01.hungrycomehere;

import java.util.ArrayList;

import android.app.ListActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.google.android.maps.GeoPoint;

public class ViewRestaurantList extends ListActivity {
    // Declarations
    ListView restaurantListView;
    ArrayList<Restaurant> restaurantList = new ArrayList<Restaurant>();
    ArrayList<String> restaurantName = new ArrayList<String>();
    ArrayAdapter<String> restaurantAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.restaurant_list_view);
        setRestaurant("Ban Leong Wah Hoe Seafood",
                "122 Casuarina Road, Singapore", "64522824",
                "contact@wahhoe-seafood.com", "http://www.wahhoe-seafood.com",
                "5:00 PM", "1:30 AM", new GeoPoint(1376700, 103828170));
        setRestaurant(
                "Ngee Fou Restaurant (Hakka) Ampang Yong Tou Foo",
                "928 Upper Thomson Road, Singapore",
                "64521801",
                null,
                "http://www.hungrygowhere.com/singapore/ngee_fou_restaurant_hakka_ampang_yong_tou_foo/",
                "9:30 AM", "7:30 PM", new GeoPoint(1399455, 103817878));
        setElements();
    }

    // Create onListItemClick method
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        Intent viewRestaurant = new Intent(getBaseContext(),
                ViewRestaurantMap.class);
        viewRestaurant.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

        // Put all restaurants' data across activities.
        viewRestaurant.putExtras(restaurantList.get(position).getBundle());
        startActivity(viewRestaurant);
    }

    // Populate list
    private void setElements() {
        restaurantListView = getListView();
        registerForContextMenu(restaurantListView);
        restaurantAdapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, restaurantName);
        restaurantListView.setAdapter(restaurantAdapter);
    }

    private void setRestaurant(String name, String address, String phoneNumber,
            String email, String url, String openingHours, String closingHours,
            GeoPoint latLong) {
        restaurantList.add(new Restaurant(name, address, phoneNumber, email,
                url, openingHours, closingHours, latLong));
        restaurantName.add(name);

    }
}

Restaurant Map

package sg.edu.rp.c345.a01.hungrycomehere;

import java.util.List;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapController;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import com.google.android.maps.Overlay;

public class ViewRestaurantMap extends MapActivity {

    // Declarations
    static final private int MAP_VIEW = Menu.FIRST;
    static final private int SAT_VIEW = Menu.FIRST + 1;
    MapView map;
    MapController myMapController;
    MyLocationOverlay myLocationOverlay;
    List<Overlay> mapOverlays;
    Drawable marker;
    HelloItemizedOverlay itemizedOverlay;
    Bundle restaurants;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.restaurant_map);

        // Get Intents from ViewShoeList and Views from layout
        restaurants = new Bundle(getIntent().getExtras());

        // MapView and Controller
        map = (MapView) findViewById(R.id.map);
        map.setBuiltInZoomControls(true);
        myMapController = map.getController();
        myMapController.setZoom(11);
        myMapController.setCenter(new GeoPoint(1352083, 103819836));

        // MyLocationOverlay
        myLocationOverlay = new MyLocationOverlay(this, map);
        myLocationOverlay.enableMyLocation();
        map.getOverlays().add(myLocationOverlay);

        // Get Overlays
        mapOverlays = map.getOverlays();
        marker = this.getResources().getDrawable(R.drawable.marker);
        itemizedOverlay = new HelloItemizedOverlay(marker);

        // Add Markers on Restaurants
        for (int i = 0; i < restaurants.size(); i++) {

        }
    }

    // Create Options menu
    @Override
    public boolean onCreateOptionsMenu(Menu optionsMenu) {
        super.onCreateOptionsMenu(optionsMenu);
        // Create and add new menu items.
        MenuItem itemMap = optionsMenu.add(0, MAP_VIEW, Menu.NONE,
                R.string.mapview);
        MenuItem itemSatellite = optionsMenu.add(0, SAT_VIEW, Menu.NONE,
                R.string.satview);

        itemMap.setIcon(R.drawable.mapview);
        itemSatellite.setIcon(R.drawable.satelliteview);
        return true;
    }

    // Execute option's action based on user click.
    @Override
    public boolean onOptionsItemSelected(MenuItem optionItem) {
        super.onOptionsItemSelected(optionItem);
        switch (optionItem.getItemId()) {
        case (MAP_VIEW): {

            map.setSatellite(false);
            return true;
        }
        case (SAT_VIEW): {

            map.setSatellite(true);
            return true;
        }

        }
        return false;
    }

    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }

}

Answer 1

You can create a method in your ItemizedOverlay class to add all restaurant objects. For this, your ItemizedOverlay will need to have an internal ArrayList bound to the overlay by overriding the createItem method. It might also help to subclass OverlayItem for your restaurant map items. Hope that helps.