我使用此代码获取当前位置，此代码工作正常，但现在需要放 这个代码在Asynctask类中，我不知道如何在Asynctask上实现这段代码
请帮帮我怎么做
public class GetLoc implements LocationListener{
SharedPreferences preferences = null;
SharedPreferences.Editor editor = null;
Context context;
LocationManager locationManager ;
String provider;
double lati;
double logi;
ProgressDialog pd;
public static String state;
String zz;
public GetLoc(Context context)
{
this.context= context;
locationManager = (LocationManager)context.getSystemService(Context.LOCATION_SERVICE);
//Toast.makeText(context, "Location can't be retrieved", Toast.LENGTH_SHORT).show();
Criteria criteria = new Criteria();
// pd = ProgressDialog.show(context, "","Please wait... ");
// Getting the name of the provider that meets the criteria
provider = locationManager.getBestProvider(criteria, false);
if(provider!=null && !provider.equals("")){
// Get the location from the given provider
Location location = locationManager.getLastKnownLocation(provider);
locationManager.requestLocationUpdates(provider, 20000, 1, this);
if(location!=null)
onLocationChanged(location);
else
Toast.makeText(context, "Location can't be retrieved", Toast.LENGTH_SHORT);
}else{
Toast.makeText(context, "No Provider Found", Toast.LENGTH_SHORT);
}
}
@Override
public void onLocationChanged(Location location) {
// TODO Auto-generated method stub
if(location.getLatitude()>0 && location.getLongitude()>0)
{
lati=location.getLatitude();
logi=location.getLongitude();
state= getAddress(context, lati, logi);
}
// Toast.makeText(context, "No"+zz, Toast.LENGTH_SHORT).show();
// pd.dismiss();
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
// TODO Auto-generated method stub
}
@Override
public void onProviderEnabled(String provider) {
// TODO Auto-generated method stub
}
@Override
public void onProviderDisabled(String provider) {
// TODO Auto-generated method stub
}
public String getAddress(Context ctx, double latitude, double longitude) {
StringBuilder result = new StringBuilder();
try {
Geocoder geocoder = new Geocoder(ctx, Locale.getDefault());
List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
if (addresses.size() > 0) {
Address address = addresses.get(0);
//String locality=address.getLocality();
//String city=address.getCountryName();
//String region_code=address.getCountryCode();
state= address.getAdminArea();
// zipcode=address.getPostalCode();
double lat =address.getLatitude();
double lon= address.getLongitude();
// result.append(locality+" ");
// result.append(city+" "+ region_code+" ");
//result.append(zipcode);
}
} catch (IOException e) {
// Log.e("tag", e.getMessage());
}
return state;
}
}
答案 0 :(得分：0)
尝试这种方式：
@Override
protected void onPreExecute() {
mVeggsterLocationListener = new VeggsterLocationListener();
mLocationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
mLocationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER, 0, 0,
mVeggsterLocationListener);
progDailog = new ProgressDialog(FastMainActivity.this);
progDailog.setOnCancelListener(new OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
FetchCordinates.this.cancel(true);
}
});
progDailog.setMessage("Loading...");
progDailog.setIndeterminate(true);
progDailog.setCancelable(true);
progDailog.show();
}
@Override
protected void onCancelled(){
System.out.println("Cancelled by user!");
progDialog.dismiss();
mLocationManager.removeUpdates(mVeggsterLocationListener);
}
@Override
protected void onPostExecute(String result) {
progDailog.dismiss();
Toast.makeText(FastMainActivity.this,
"LATITUDE :" + lati + " LONGITUDE :" + longi,
Toast.LENGTH_LONG).show();
}
@Override
protected String doInBackground(String... params) {
// TODO Auto-generated method stub
while (this.lati == 0.0) {
}
return null;
}
public class VeggsterLocationListener implements LocationListener {
@Override
public void onLocationChanged(Location location) {
int lat = (int) location.getLatitude(); // * 1E6);
int log = (int) location.getLongitude(); // * 1E6);
int acc = (int) (location.getAccuracy());
String info = location.getProvider();
try {
// LocatorService.myLatitude=location.getLatitude();
// LocatorService.myLongitude=location.getLongitude();
lati = location.getLatitude();
longi = location.getLongitude();
} catch (Exception e) {
// progDailog.dismiss();
// Toast.makeText(getApplicationContext(),"Unable to get Location"
// , Toast.LENGTH_LONG).show();
}
}
@Override
public void onProviderDisabled(String provider) {
Log.i("OnProviderDisabled", "OnProviderDisabled");
}
@Override
public void onProviderEnabled(String provider) {
Log.i("onProviderEnabled", "onProviderEnabled");
}
@Override
public void onStatusChanged(String provider, int status,
Bundle extras) {
Log.i("onStatusChanged", "onStatusChanged");
}
}
}
}