android网络-GoogleMap之GPS定位

首先，获取MapAPIKey

1，获取android keystore位置

eclipse->window->preferences->android->build

在default debug keystore下找到android key的存储位置C:\Users\acer\.android\debug.keystore，备用。

2，用jdk提供的keytool为android keystore生成认证指纹

进入cmd，按下图输入

C:\Program Files\Java\jdk1.7.0_03\bin>keytool -list -alias androiddebugkey -keystore "C:\Users\acer\.android\debug.keystore" -v

密码输入：android或不输。

取MD5值，备用

3，输入网址http://code.google.com/intl/zh-CN/android/maps-api-signup.html

，登陆Google账号，并且在申请页面上输入得到的MD5认证指纹，点击”Generate API Key”来获取我们得到的API Key

然后，创建基于Google APIs的AVD，以及创建基于Google APIs的工程

就是把所有Android2.2的都改为Google APIs

最后，编写程序

程序效果：运行程序，send经纬度后，界面标记根据经纬度变化

manifest

注意添加internet和gps的权限，以及添加googlemap的library

让map可点击和拖拽 android:clickable="true"
获取得到的key           android:apiKey="0HtSsgCEmiiTTfk-g0Oi59Wi2ndgjaMdoLSDPnw"

package com.song;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.Overlay;
import com.google.android.maps.Projection;import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Point;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;public class C7_GoogleMapActivity extends MapActivity {/** Called when the activity is first created. */MapView mapview;MapController controller;Location location;LocationManager manager;GeoPoint geoPoint;Bitmap bitmap;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);mapview=(MapView)findViewById(R.id.mapview);  manager=(LocationManager)getSystemService(LOCATION_SERVICE);location=manager.getLastKnownLocation(LocationManager.GPS_PROVIDER);bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.pos);//生成bitmap位图mapview.setBuiltInZoomControls(true);//实现放大缩小功能manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 60000, 10, new LocationListener() {@Override public void onStatusChanged(String provider, int status, Bundle extras) {// TODO Auto-generated method stub}@Overridepublic void onProviderEnabled(String provider) {// TODO Auto-generated method stub}@Overridepublic void onProviderDisabled(String provider) {// TODO Auto-generated method stub}@Overridepublic void onLocationChanged(Location location) {// TODO Auto-generated method stubgetPoint(location);}});}public void getPoint(Location location){controller=mapview.getController();//注意参数是纬度，经度。E6为10的6次方
//       GeoPoint geoPoint=new GeoPoint((int)(37.898989*1E6), (int)(122.989898*1E6));geoPoint=new GeoPoint((int)(location.getLatitude()*1E6), (int)(location.getLongitude()*1E6));//定位到哪个点controller.animateTo(geoPoint);//获得悬浮图层List list = mapview.getOverlays();//获得MapView上原有的overlay对象list.clear();//清除所有的overlay对象list.add(new MyOverLay());//加新获取的overlay对象}class MyOverLay extends Overlay{  //画标记的方法@Overridepublic void draw(Canvas canvas, MapView mapView, boolean shadow) {// TODO Auto-generated method stubsuper.draw(canvas, mapView, shadow);Projection projection=mapView.getProjection();Point point=new Point();//定义输出的像素点projection.toPixels(geoPoint, point);//地理坐标转为像素坐标//绘制图片//bitmap, left, top, paintcanvas.drawBitmap(bitmap, point.x-(bitmap.getWidth()/2), point.y-(bitmap.getHeight()), null);} }@Overrideprotected boolean isRouteDisplayed() {// TODO Auto-generated method stubreturn false;}
}

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