【发布时间】：2014-04-15 15:41:48
【问题描述】：
我有一个带有列表视图的片段，它检索用户位置，然后根据用户位置更新列表视图。
我的代码的问题是它似乎抓住了位置更新列表，然后继续更新。并重新加载列表，几乎到了烦恼的地步。这是我的代码：
public class FindBrewery extends Fragment implements LocationListener {
private TextView latituteField;
private TextView longitudeField;
LocationManager locationManager;
private String provider;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
Context c = getActivity().getApplicationContext();
locationManager =(LocationManager)activity.getSystemService(Context.LOCATION_SERVICE);
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
//todo change view
View rootView = inflater.inflate(R.layout.beer_location_list,container, false);
// Get the location manager
// Define the criteria how to select the locatioin provider -> use
// default
Criteria criteria = new Criteria();
provider = locationManager.getBestProvider(criteria, false);
Location location = locationManager.getLastKnownLocation(provider);
// Initialize the location fields
if (location != null) {
System.out.println("Provider " + provider + " has been selected.");
onLocationChanged(location);
} else {
}
return rootView;
}
/* Request updates at startup */
@Override
public void onResume() {
super.onResume();
locationManager.requestLocationUpdates(provider, 400, 1, this);
}
/* Remove the locationlistener updates when Activity is paused */
@Override
public void onPause() {
super.onPause();
locationManager.removeUpdates(this);
}
@Override
public void onLocationChanged(Location location) {
int lat = (int) (location.getLatitude());
int lng = (int) (location.getLongitude());
//latituteField.setText(String.valueOf(lat));
//longitudeField.setText(String.valueOf(lng));
//Toast.makeText(this, "Finding your loaction",Toast.LENGTH_SHORT).show();
//call asycn task for location
String url = "myURL";
Log.d("urlTest", url);
//async task goes here
new GetNearbyBreweries(this.getActivity()).execute(url);
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
//Toast.makeText(this, "Enabled new provider " + provider,Toast.LENGTH_SHORT).show();
}
@Override
public void onProviderDisabled(String provider) {
//Toast.makeText(this, "Disabled provider " + provider,Toast.LENGTH_SHORT).show();
}
}
【问题讨论】：
标签： android gps locationmanager android-location