android 地图

http://vip.du8.com/books/sepc0xy.shtml#

在做android地图时要引用google APIs，同时还要申请API Key
申请android google map API key
转自：http://www.cnblogs.com/alex77lee/archive/2010/05/21/1789924.html
1.首先要得到你的debug keystore位置：
打开Eclipse--->Windows--->Preferences--->Android--->Build
查看默认的debug keystore位置，例如：C:\Documents and Settings\(你电脑的名字)\.android\debug.keystore


2.在cmd中执行:   (可以先定位到jdk的bin目录下)
keytool  -list  -alias androiddebugkey  -keystore  " C:\Documents and Settings\MYNAME\.android\debug.keystore "  -storepass android  -keypass android
双引号中的为你keystore位置， (一定要有双引号)，否则就会报错。
如果系统提示找不到keytool，需要将jdk中bin目录加入到环境变量中
执行结果：
androiddebugkey, 2009-10-04, PrivateKeyEntry,
指纹认证<MD5>: XX:XX:XX:XX:XX:XX:XX:XX.............
这里的XX:XX:XX:XX:XX:XX:XX:XX.............就是你的认证指纹

3.打开http://code.google.com/intl/zh-CN/android/maps-api-signup.html
填入你的认证指纹(MD5)即可获得apiKey了,结果显示如下：
感谢您注册 Android 地图 API 密钥！
您的密钥是：
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
我IE打开的时候是乱码，不知道是不是自己电脑有问题。后来改用了chrome就正常显示了。


4.使用得到的apiKey:
在layout中加入MapView
搞定~
下面是主要代码（来自eoeandroid一位朋友的代码）

package com.wbtech.CurrentLocationWithMap;

import java.util.List;

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;
//import com.wbtech.CurrentLocation.R;


import android.app.Activity;
import android.content.Context;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;
import android.widget.ToggleButton;

public class CurrentLocationWithMap extends MapActivity {
    protected Location location;
    MapView map;
	private MyLocationOverlay myLocation;
	MapController controller;
	MapController ctrlMap;
	Button inBtn;
	Button outBtn;
	ToggleButton switchMap;
	
	/** Called when the activity is first created. */
    @Override
    protected boolean isRouteDisplayed(){
    	return false;
    }
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        LocationManager locationManager;
        String seviceName = Context.LOCATION_SERVICE;
        locationManager = (LocationManager)getSystemService(seviceName);
        
        
        Criteria criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);
        criteria.setAltitudeRequired(false);
        criteria.setBearingRequired(false);
        criteria.setCostAllowed(true);
        criteria.setPowerRequirement(Criteria.POWER_LOW);
        

        
        String provider = locationManager.getBestProvider(criteria,true);
        Location location = locationManager.getLastKnownLocation(provider);
        updateWithNewLocation(location);
        

        
        locationManager.requestLocationUpdates(provider, 2000, 10, locationListener);
        
        map = (MapView)findViewById(R.id.myMapView);
        List<Overlay>overlays = map.getOverlays();
        myLocation = new MyLocationOverlay(this,map);
         controller = map.getController();
        myLocation.enableMyLocation();
        map.getOverlays().add(myLocation);
        
        ctrlMap = map.getController();
        inBtn = (Button)findViewById(R.id.in);
        outBtn = (Button)findViewById(R.id.out);
        OnClickListener listener = new OnClickListener(){
        
        	public void onClick(View v){
        		switch (v.getId()){
        		case R.id.in:
        			ctrlMap.zoomIn();
        			break;
        		case R.id.out:
        			ctrlMap.zoomOut();
        		default:
        			break;
        		}
        	}
        };
        inBtn.setOnClickListener(listener);
        outBtn.setOnClickListener(listener);
        
        switchMap = (ToggleButton)findViewById(R.id.switchMap);
        switchMap.setOnCheckedChangeListener(new OnCheckedChangeListener(){
        
        	public void onCheckedChanged(CompoundButton cBtn,boolean isChecked){
        		if (isChecked == true){
        			map.setSatellite(true);
        		} else {
                   
    			map.setSatellite(false);
    			map.setStreetView(true);
        		}
        	}
        });
        
    }

    private final LocationListener locationListener = new LocationListener(){
    	public void onLocationChanged(String provider){
    		updateWithNewLocation(location);
    	}
    	public void onProviderDisabled(String provider){
    		updateWithNewLocation(null);
    	}
    	public void onProviderEnavled(String probider){
    		
    	}
    	public void onStatusChanged(String provider,int status,Bundle extras){}
	
		public void onLocationChanged(Location location) {
			// TODO Auto-generated method stub
			
		}
	
		public void onProviderEnabled(String provider) {
			// TODO Auto-generated method stub
			
		}
    };
    
	private void updateWithNewLocation(Location location) {
		// TODO Auto-generated method stub
		String latLongString;
		TextView myLocationText;
		myLocationText = (TextView)findViewById(R.id.myLocationText);
		if (location != null){
			double lat = location.getLatitude();
			double lng = location.getLongitude();
			latLongString = "纬度：" + lat +"\n经度" + lng;
			
		//	ctrlMap.animateTo(new GeoPoint((int)(lat*1E6),(int)(lng*1E6)));
			
		}else {
			latLongString = "无法获取地理信息";
		}
		myLocationText.setText("您当前的位置是：\n" + latLongString);
	}
}

页面：

<com.google.android.maps.MapView
         android:clickable="true"
         android:id="@+id/myMapView"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:apiKey="06u0_ZgwSFsxDdaR8ITGA_CwRA8_FhsoYNUmTAg"
                 />