android使用GPS定位及在googlemap添加标记

要使用googlemap,Activity要继承MapActivity. MapActivity是使用的google第三方API,所以要在配置文件中声明. 废话不多说，上代码:

manifest.xml中:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.t2cn.map"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".MapViewActivity"
                  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" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
</manifest>

注意一定要加<uses-library android:name="com.google.android.maps"/>，并且加在<application></application>中，否则运行时会有classNotFoundException.

Activity:

地图覆盖物MyOverlay类:

public class MapViewActivity extends com.google.android.maps.MapActivity{
    private LocationListener locationListener;
    TextView tv1;
    GeoPoint gp;
    MapView mapView;
    private Criteria criteria;
    View popView;
    private Handler mHandler;
    private Location location;
    private MapController mapController;
    private LocationManager locationManager;
    int i;
    @Override
    public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         this.setContentView(R.layout.tv);
         tv1 = (TextView) this.findViewById(R.id.tv1);
         openGPSSettings();             //判断是否开启GPS
         mHandler = new MyHandler();
         mHandler.post(runnable);
         getLocation();
         setMapView();
        
    }
    /**
     * 判断是否开启GPS
     */
    private void openGPSSettings() {
        LocationManager alm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
        if (alm.isProviderEnabled(android.location.LocationManager.GPS_PROVIDER)) {
            Toast.makeText(this, "GPS模块正常", Toast.LENGTH_SHORT).show();
            return;
        }

        Toast.makeText(this, "请开启GPS！", Toast.LENGTH_SHORT).show();
        Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
        startActivityForResult(intent,0); //此为设置完成后返回到获取界面

    }
    /**
     * 设置地图显示
     */
    private void setMapView(){
         this.mapView = (MapView) this.findViewById(R.id.map);
         this.mapView.setBuiltInZoomControls(true);//可以多点触摸放大 
         mapView.setStreetView(true);
         mapView.setBuiltInZoomControls(true);
         this.mapController = mapView.getController(); 
         mapController.setZoom(14);
         
         Drawable drawable = this.getResources().getDrawable(R.drawable.marker);
         //设置图片的绘制区域大小
         drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
         this.mapController.animateTo(gp);//通过动画方式移动到指定坐标 
         setView();//设置弹出框
         MyOverlay myOverlay = new MyOverlay(drawable,this);
         myOverlay.addOverlay(new OverlayItem(gp, "hello", "i'm in Athens,Greece!"));
         mapView.getOverlays().add(myOverlay);
    }
    /**
     * 设置地图标记弹出框样式
     */
    private void setView(){
        //popView不为null,即界面刷新重新调用setMapView的时候不用重新创建popView,否则原来popView的监听事件不启作用
        if(popView==null){
            popView = super.getLayoutInflater().inflate(R.layout.pop, null); 
            mapView.addView(popView,  
                      new MapView.LayoutParams(MapView.LayoutParams.WRAP_CONTENT, MapView.LayoutParams.WRAP_CONTENT,  
                    null, MapView.LayoutParams.BOTTOM_CENTER));  
            popView.setVisibility(View.GONE);  
        }
    }
    @Override
    protected boolean isRouteDisplayed() {
        // TODO Auto-generated method stub
        return false;
    }
    /**
     * 获取位置信息
     */
    private void getLocation(){
        // 获取位置管理服务
        String serviceName = Context.LOCATION_SERVICE;
        locationManager = (LocationManager) this.getSystemService(serviceName);
        // 查找到服务信息
        criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE); // 高精度
        criteria.setAltitudeRequired(false);          //不要求海拔信息
        criteria.setBearingRequired(false);              //不要求方位信息
        criteria.setCostAllowed(true);                  //是否允许付费
        criteria.setPowerRequirement(Criteria.POWER_LOW); // 低功耗
        String provider = locationManager.getBestProvider(criteria, true); // 获取GPS信息
        location = locationManager.getLastKnownLocation(provider); // 通过GPS获取位置
        updateToNewLocation(location);
        // 设置监听器，自动更新的最小时间为间隔N秒(1秒为1*1000，这样写主要为了方便)或最小位移变化超过N米
        locationListener = new LocationListener(){

            @Override
            public void onLocationChanged(Location location) {
                updateToNewLocation(location);
            }

            @Override
            public void onProviderDisabled(String provider) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void onProviderEnabled(String provider) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void onStatusChanged(String provider, int status,
                    Bundle extras) {
                // TODO Auto-generated method stub
                
            }
            
        };
        locationManager.requestLocationUpdates(provider, 100 * 1000, 500,locationListener);
    }
    /**
     * 获取GeoPoint
     */
    private void updateToNewLocation(Location location) {
        if(true){
            double latitude = 31.16520805*1E6;
            double longitude = 121.4000644*1E6;
//        if (location != null) {
//            double latitude = location.getLatitude()*1E6;  
//            double longitude = location.getLongitude()*1E6;  
            gp = new GeoPoint((int) latitude, (int) longitude); 
            tv1.setText("维度：" +  latitude+ "\n经度" + longitude);
        } else {
            tv1.setText("无法获取地理信息");
        }
    }
    /**
     * 发送位置信息到服务器
     */
    Runnable runnable = new Runnable(){
        @Override
        public void run() {
            String provider = locationManager.getBestProvider(criteria, true); 
            location = locationManager.getLastKnownLocation(provider); 
//            double lat = location.getLatitude()*1E6;
//            double lon = location.getLongitude()*1E6;
            double lat = 31.16520805*1E6;
            double lon = 121.4000644*1E6;
            mHandler.postDelayed(runnable, 10*1000);
            Message message = mHandler.obtainMessage();
            message.arg1 = (int)lat;
            message.arg2 = (int)lon;
            mHandler.sendMessage(message);
        }
    };
    /**定义MyHandler*/
    /**
     * 自定义Handler
     */
    class MyHandler extends Handler{
        public void handleMessage(Message msg) { 
             i++;
            super.handleMessage(msg);
            int lat = msg.arg1;
            int lon = msg.arg2;
            gp = new GeoPoint((int) lat, (int) lon); 
            mapController.setCenter(gp);
            setMapView();
            mapView.invalidate();
            tv1.setText(i+": "+"维度：" +  lat+ "\n经度" + lon);
            //tv1.invalidate();
        };   
    }
}

public class MyOverlay extends ItemizedOverlay{
    private ArrayList<OverlayItem> mapOverlays = new ArrayList<OverlayItem>();
    private MapViewActivity context;
    private TextView textView1,textView2;
    public MyOverlay(Drawable arg0) {
        super(arg0);
        // TODO Auto-generated constructor stub
    }
    public MyOverlay(Drawable defaultMarker, Context context) {
        this(defaultMarker);
        this.context = (MapViewActivity)context;
    }
    @Override
    protected OverlayItem createItem(int arg0) {
        // TODO Auto-generated method stub
        return mapOverlays.get(arg0);
    }
     
    @Override
    public int size() {
        // TODO Auto-generated method stub
        return mapOverlays.size();
    }
    
    protected boolean onTap(int index) {
        MapView.LayoutParams geoLP = (MapView.LayoutParams)context.popView.getLayoutParams();
        geoLP.point = mapOverlays.get(index).getPoint();
        context.mapView.updateViewLayout(context.popView, geoLP);  
        context.popView.setVisibility(View.VISIBLE);  
        textView1 = (TextView) context.popView.findViewById(R.id.map_bubbleTitle);  
        textView2 = (TextView) context.popView.findViewById(R.id.map_bubbleText);  
        textView1.setText(mapOverlays.get(index).getTitle());   
        textView2.setText(mapOverlays.get(index).getSnippet());   
        context.popView.setVisibility(View.VISIBLE);
        ImageView imageView = (ImageView) context.popView.findViewById(R.id.map_bubbleImage);  
        imageView.setOnClickListener(new View.OnClickListener(){  
            @Override  
            public void onClick(View v) {  
                context.popView.setVisibility(View.GONE);
            }  
        });  
        return true;
    }
       
    public void addOverlay(OverlayItem overlay) {
       mapOverlays.add(overlay);
       populate();
    }
}

用到的图片:

layout文件:

tv.xml 用来显示地图

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    <TextView  
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
    />
    <com.google.android.maps.MapView
       android:id="@+id/map"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:enabled="true"
       android:clickable="true"
       android:apiKey="04lsJg9XJO11W63yc6Q3vsfb0HTJgiYxtTlCiGg"
      />
</LinearLayout>

pop.xml 用来显示地图覆盖物的弹出框

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:background="@drawable/bubble_background"  
android:layout_width="wrap_content"  
android:layout_height="wrap_content" 
android:paddingLeft="5px" 
android:paddingTop="5px" 
android:paddingRight="5px" 
android:paddingBottom="20px"     
   >  
     
    <TextView android:id="@+id/map_bubbleTitle"  
       android:ellipsize="marquee"  
       android:layout_width="120px"  
       android:layout_height="wrap_content" 
       android:gravity="center_horizontal" 
       android:singleLine="true"  />   
    <ImageView android:id="@+id/map_bubbleImage"  
       android:background="@drawable/close"  
       android:layout_width="30px"  
       android:layout_toRightOf="@id/map_bubbleTitle" 
       android:layout_height="wrap_content"/>  
                                  
    <TextView  android:id="@+id/map_bubbleText"  
       android:layout_width="150px"  
       android:layout_below="@id/map_bubbleTitle" 
       android:layout_height="wrap_content"  
       android:singleLine="false" />  
         
      
</RelativeLayout>





OK。 搞定