import java.util.List;

 import android.app.Activity;

 import android.content.Context;

 import android.location.Criteria;

 import android.location.LocationManager;

 import android.location.LocationProvider;

 import android.os.Bundle;

 import android.widget.ArrayAdapter;

 import android.widget.ListView;

 /*

  * 本类用3种方法列出LocationProvider

  */

 public class AllProvidersActivity extends Activity

 {

     //用来显示所有LocationProvider

     ListView mProviders;

     //LocationProvider管理类

     LocationManager mLocationManager;

     @Override

     public void onCreate(Bundle savedInstanceState)

     {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.main);

         mProviders = (ListView)findViewById(R.id.providers);

         //列出所有LocationProvider第1步,取得LocationManager

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

         listAllLocationProvider();

 //        filterLocationProvider();

     }

     /*

      *

      * 获取所有可用的LocationProvider

      */

     public void listAllLocationProvider(){

         //列出所有LocationProvider第2步,从LocationManager列出所有LocationProvider保存了string类型的list中

         List<String> providerNames = mLocationManager.getAllProviders();

         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, providerNames);

         mProviders.setAdapter(adapter);

     }

     /*

      * 根据条件（Criteria）获取LocationProvider

      */

     public void filterLocationProvider(){

         //1,创建一个LocationPorvider过滤器.

         Criteria cri = new Criteria();

         //2,设备过滤条件

         //过滤条件1:LocationPorvider免费

         cri.setCostAllowed(false);

         //过滤条件2:LocationPorvider提供高度信息

         cri.setAltitudeRequired(true);

         //过滤条件3:LocationPorvider提供方向信息

         cri.setBearingRequired(true);

         List<String> providerNames = mLocationManager.getProviders(cri, true);//true表示3个条件是逻辑与

         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, providerNames);

         mProviders.setAdapter(adapter);

     }

     /*

      * 根据名称获取LocationProvider

      */

     public void getLocationProviderByName(){

         //  获取passive Location Provider

         LocationProvider passiveProvider = mLocationManager.getProvider(LocationManager.PASSIVE_PROVIDER);

         //  获取gps Location Provider

         LocationProvider gpsProvider = mLocationManager.getProvider(LocationManager.GPS_PROVIDER);

         //  获取network Location Provider

         LocationProvider networkProvider = mLocationManager.getProvider(LocationManager.NETWORK_PROVIDER);

     }

 }