Android 应用使用 Google 地图的例子

[代码] GMapsActivity.java

package com.javacodegeeks.android.googlemaps;    import java.util.List;    import android.graphics.drawable.Drawable;  import android.os.Bundle;    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.Overlay;  import com.google.android.maps.OverlayItem;    public class GMapsActivity extends MapActivity {            private MapView mapView;            private static final int latitudeE6 = 37985339;      private static final int longitudeE6 = 23716735;            @Override      public void onCreate(Bundle savedInstanceState) {                    super.onCreate(savedInstanceState);          setContentView(R.layout.main);                    mapView = (MapView) findViewById(R.id.map_view);                 mapView.setBuiltInZoomControls(true);                    List<overlay> mapOverlays = mapView.getOverlays();          Drawable drawable = this.getResources().getDrawable(R.drawable.icon);          CustomItemizedOverlay itemizedOverlay =                new CustomItemizedOverlay(drawable, this);                    GeoPoint point = new GeoPoint(latitudeE6, longitudeE6);          OverlayItem overlayitem =                new OverlayItem(point, "Hello", "I'm in Athens, Greece!");                    itemizedOverlay.addOverlay(overlayitem);          mapOverlays.add(itemizedOverlay);                    MapController mapController = mapView.getController();                    mapController.animateTo(point);          mapController.setZoom(6);                }        @Override      protected boolean isRouteDisplayed() {          return false;      }        }

package com.javacodegeeks.android.googlemaps;    import java.util.ArrayList;    import android.app.AlertDialog;  import android.content.Context;  import android.graphics.drawable.Drawable;    import com.google.android.maps.ItemizedOverlay;  import com.google.android.maps.OverlayItem;    public class CustomItemizedOverlay extends ItemizedOverlay<OverlayItem> {          private ArrayList<OverlayItem> mapOverlays = new ArrayList<OverlayItem>();          private Context context;          public CustomItemizedOverlay(Drawable defaultMarker) {          super(boundCenterBottom(defaultMarker));     }          public CustomItemizedOverlay(Drawable defaultMarker, Context context) {          this(defaultMarker);          this.context = context;     }       @Override     protected OverlayItem createItem(int i) {        return mapOverlays.get(i);     }       @Override     public int size() {        return mapOverlays.size();     }          @Override     protected boolean onTap(int index) {        OverlayItem item = mapOverlays.get(index);        AlertDialog.Builder dialog = new AlertDialog.Builder(context);        dialog.setTitle(item.getTitle());        dialog.setMessage(item.getSnippet());        dialog.show();        return true;     }          public void addOverlay(OverlayItem overlay) {        mapOverlays.add(overlay);         this.populate();     }    }

<?xml version="1.0" encoding="utf-8"?>    <RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"   android:orientation="vertical"    android:layout_width="fill_parent"   android:layout_height="fill_parent">      <com.google.android.maps.MapView    xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/map_view"    android:layout_width="fill_parent"     android:layout_height="fill_parent"    android:clickable="true"     android:enabled="true"     android:apiKey="API-KEY-HERE" />       </RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>    <manifest xmlns:android="http://schemas.android.com/apk/res/android"        package="com.javacodegeeks.android.googlemaps"        android:versionCode="1"        android:versionName="1.0">              <application android:icon="@drawable/icon" android:label="@string/app_name">                <activity android:name=".GMapsActivity"                    android:label="@string/app_name">              <intent-filter>                  <action android:name="android.intent.action.MAIN" />                    <category android:name="android.intent.category.LAUNCHER" />              </intent-filter>          </activity>                  <uses-library android:name="com.google.android.maps" />              </application>        <uses-permission android:name="android.permission.INTERNET"/>    </manifest>