在Android中获取更新的位置

每次单击按钮时,我都使用下面显示的代码获取位置的更新值。当我的活动恢复时,我会每秒更新一次,因此当我调用GetLastKnownLocation时,我希望在最后一秒更新一个位置。

这是正确的方法吗?

我希望每次执行“geo fix”命令时都触发onlocationchanged事件(或者自我请求每隔1秒更新以来,最多1秒后触发),但它只是第一次触发。为什么?

欢迎提供任何帮助/建议!

谢谢

package org.digitalfarm.atable;

...

public class Atable extends Activity {
    private Button mSearchButton;
    private TextView mytext;
    private LocationManager locationManager;    


    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);   

        setContentView(R.layout.main);

        mSearchButton = (Button)this.findViewById(R.id.button);

        mytext = (TextView) findViewById(R.id.dude);

        locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
        final Criteria criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);               


        mSearchButton.setOnClickListener(new OnClickListener() {
          @Override
          public void onClick(View v) {

                  String provider = locationManager.getBestProvider(criteria, true);

                  Location location = locationManager.getLastKnownLocation(provider);             

          }
        });
    }

     //Start a location listener
    LocationListener onLocationChange=new LocationListener() {
        public void onLocationChanged(Location loc) {
            //sets and displays the lat/long when a location is provided
            String latlong = "Lat: " + loc.getLatitude() + " Long: " + loc.getLongitude();   
            mytext.setText(latlong);
        }

        public void onProviderDisabled(String provider) {
        // required for interface, not used
        }

        public void onProviderEnabled(String provider) {
        // required for interface, not used
        }

        public void onStatusChanged(String provider, int status,
        Bundle extras) {
        // required for interface, not used
        }
    };

    //pauses listener while app is inactive
    @Override
    public void onPause() {
        super.onPause();
        locationManager.removeUpdates(onLocationChange);
    }

    //reactivates listener when app is resumed
    @Override
    public void onResume() {
        super.onResume();
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,1000,100.0f,onLocationChange);
    }
}