GPS技术（一）

 1 //获取所有的provider
 2 public class MainActivity extends ActionBarActivity {
 3     ListView mprovider;
 4     LocationManager mlManager;
 5 
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.fragment_main);
10         mprovider = (ListView) findViewById(R.id.listView1);
11         // 获得LocationManager对象
12         mlManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
13         // 获取所有的Locationprovider的名称
14         List<String> providerNames = mlManager.getAllProviders();
15 
16         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
17                 android.R.layout.simple_list_item_1, providerNames);
18         mprovider.setAdapter(adapter);
19     }
20 
21 }

 1 //根据条件获得Locationprovider
 2 public class MainActivity extends ActionBarActivity {
 3     ListView mprovider;
 4     LocationManager mlManager;
 5 
 6     @Override
 7     protected void onCreate(Bundle savedInstanceState) {
 8         super.onCreate(savedInstanceState);
 9         setContentView(R.layout.fragment_main);
10         mprovider = (ListView) findViewById(R.id.listView1);
11         mlManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
12         // 创建一个LocationProvider的过滤条件
13         Criteria criteria = new Criteria();
14         // 设置要求LocationProvider必须是免费的
15         criteria.setCostAllowed(false);
16         // 设置要求ocationProvider能提供高度信息----测海拔
17         criteria.setAltitudeRequired(true);
18         // 设置要求ocationProvider能提供方向信息----方向
19         criteria.setBearingRequired(true);
20         List<String> providerName = mlManager.getProviders(criteria, true);
21         ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
22                 android.R.layout.simple_list_item_1, providerName);
23         mprovider.setAdapter(adapter);
24     }
25 
26 }