LocationManager locMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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
		android:id="@+id/mapView"
		android:layout_width="fill_parent"
    	android:layout_height="fill_parent"
		android:clickable="true"
		android:apiKey="your apiKey goes here"/>
	<Button
		android:id="@+id/removeUpdates"
		android:layout_width="fill_parent"
    	android:layout_height="wrap_content"
    	android:text="removeUpdates"/>
</FrameLayout>

package com.scott.location;
 
import android.content.Context;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.Toast;
 
import com.google.android.maps.GeoPoint;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MapView.LayoutParams;
 
public class MainActivity extends MapActivity {
	
    private MapView mapView;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        mapView = (MapView) findViewById(R.id.mapView);
        mapView.getController().setZoom(17);
        
        final LocationManager locMgr = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        
        //獲取緩存中的位置信息
        Location location = locMgr.getLastKnownLocation(LocationManager.GPS_PROVIDER);
        if (location != null) {
        	markCurrLocation(location);
        }
        
        final MyLocationListener listener = new MyLocationListener();
        //注冊(cè)位置更新監(jiān)聽(最小時(shí)間間隔為5秒,最小距離間隔為5米)
        locMgr.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 5, listener);
        
        Button removeUpdates = (Button) findViewById(R.id.removeUpdates);
        removeUpdates.setOnClickListener(new View.OnClickListener() {
        	@Override
        	public void onClick(View v) {
        		//停止監(jiān)聽
        		locMgr.removeUpdates(listener);
        	}
        });
    }
    
    /**
     * 標(biāo)記當(dāng)前位置
     * @param location
     */
    private void markCurrLocation(Location location) {
    	mapView.removeAllViews();	//清除地圖上所有標(biāo)記視圖
    	GeoPoint point = new GeoPoint((int) (location.getLatitude() * 1E6), (int) (location.getLongitude() * 1E6));
		mapView.getController().animateTo(point);
		final MapView.LayoutParams params = new MapView.LayoutParams(LayoutParams.WRAP_CONTENT,
				LayoutParams.WRAP_CONTENT, point, LayoutParams.BOTTOM_CENTER);
		final ImageView marker = new ImageView(MainActivity.this);
		marker.setImageResource(R.drawable.marker);
		marker.setOnClickListener(new View.OnClickListener() {
			@Override
			public void onClick(View v) {
				Toast.makeText(getApplicationContext(), "hello, location manager!", Toast.LENGTH_SHORT).show();
			}
		});
		mapView.addView(marker, params);
	}
 
	@Override
	protected boolean isRouteDisplayed() {
		return false;
	}
	
	private final class MyLocationListener implements LocationListener {
 
		@Override
		public void onLocationChanged(Location location) {
			markCurrLocation(location);
		}
 
		@Override
		public void onStatusChanged(String provider, int status, Bundle extras) {
			//Provider狀態(tài)在可用、暫不可用、無(wú)服務(wù)三個(gè)狀態(tài)之間直接切換時(shí)觸發(fā)此函數(shù)
		}
 
		@Override
		public void onProviderEnabled(String provider) {
			//Provider被enable時(shí)觸發(fā)此函數(shù),比如GPS被打開
		}
 
		@Override
		public void onProviderDisabled(String provider) {
			//Provider被disable時(shí)觸發(fā)此函數(shù),比如GPS被關(guān)閉
		}
		
	}
}

<uses-library android:name="com.google.android.maps" />

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />