android之用户定位（一）
1、User Location 能做什么
1) 获取用户的位置
2)追踪用户的移动

2、User Location的关键API
1)LocationManager：用于光了android的用户定位服务
2) LocationProvider:提供多种定位方式，供开发者选择

3、定位方式的分类：
1)GPS定位：使用GPS卫星进行定位，需要在androidManifest.xml文件中添加如下权限声明：
android.permission.ACCESS_FINE_LOCTION
2)NETWORK定位
使用信号接收塔和Wi_Fi介入定进行定位，需要在需要在androidManifest.xml文件中添加如下权限声明：
android.permission.ACCESS_FINE_LOCTION
或
android.permission.ACCESS_COARSE_LOCTION

4、获取用户当前的位置的步骤
a.在androidManifest.xml中声明相应的权限
b.获取lacationManager的对象
c.选择LocationProvider
d.绑定LocationListener对象

androidManifest.xml

布局文件main.xml


mainActivity文件：
import android.app.Activity;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.view.View.OnClickListener;import android.widget.Button;public class TestGPS01Activity extends Activity {    /** Called when the activity is first created. */private Button button = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                button = (Button)findViewById(R.id.button);        button.setOnClickListener(new ButtonListener());    }    private class ButtonListener implements OnClickListener    {@Overridepublic void onClick(View v) {// TODO Auto-generated method stub//获取LocationManager对象LocationManager locationManager = (LocationManager)TestGPS01Activity.this.getSystemService(Context.LOCATION_SERVICE);locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new TestLocationListener());}        }    private class TestLocationListener implements LocationListener    {@Overridepublic void onLocationChanged(Location location) {// TODO Auto-generated method stubSystem.out.println(location.getLongitude());System.out.println(location.getLatitude());}@Overridepublic void onProviderDisabled(String provider) {// TODO Auto-generated method stub}@Overridepublic void onProviderEnabled(String provider) {// TODO Auto-generated method stub}@Overridepublic void onStatusChanged(String provider, int status, Bundle extras) {// TODO Auto-generated method stub}        }    }