Andorid--gps provider获取

public class AllProvidersActivity extends Activity{    ListView mProviders;    LocationManager mLocationManager;    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        mProviders = (ListView)findViewById(R.id.providers);        //  首先应获取LocationManager对象        mLocationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);        // 获取所有的LocationProvder的名称        List<String> providerNames = mLocationManager.getAllProviders();        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, providerNames);        mProviders.setAdapter(adapter);    }}