Question

我正在尝试使用GPS provider或Network provider获取位置，但我没有从 GPS 或网络获取位置。
这是我的代码，它在几天前工作正常，但现在它无法正常工作我不明白我错在哪里因为所有权限都已添加到 AndroidManifest.xml 中以下是有助于您理解的代码。

public class SearchDishoom extends Header implements LocationListener {  
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.searchdish);        




        manager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000000, 100, this);

            locationListenerNetwork = new LocationListener() {
                public void onLocationChanged(Location location) {}
                public void onProviderDisabled(String provider) {}
                public void onProviderEnabled(String provider) {}
                public void onStatusChanged(String provider, int status, Bundle extras) {}
            };              

        if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            // if gps provider is not enable then popup alertbox
            buildAlertMessageNoGps();
        } else {        
            // if gps is one then start searching
            locationListenerGps = new LocationListener() {
                public void onLocationChanged(Location location) {}
                public void onProviderDisabled(String provider) {}
                public void onProviderEnabled(String provider) {}
                public void onStatusChanged(String provider, int status, Bundle extras) {}
            };
            manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000000,100, locationListenerGps);
        }
    }

    /*
     * Get location (lat-long) from sharedpreference to further use
     */
    prefLocation = getSharedPreferences("myLocation", MODE_WORLD_READABLE);
    String userLocationLat1 = prefLocation.getString("Lat", String.valueOf(0));
    String userLocationlong1 = prefLocation.getString("Long", String.valueOf(0));
    String address = prefLocation.getString("Address", "Location not found not found");
    userLocationLat = Double.parseDouble(userLocationLat1);
    userLocationlong = Double.parseDouble(userLocationlong1);

    // set lat-long value in getset class for use of another activity
    gs = new GetSet();
    gs.setLatitude(userLocationLat);
    gs.setLangitude(userLocationlong);      
    if (userLocationLat == 0 && userLocationlong == 0 && address.equals("")) {
        /*
         *  if lat-long is 0 or null then start searching using
         *  GPS Provider or Network Provider
         */

        manager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        manager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
        if (!manager.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
            buildAlertMessageNoGps();
        } else {
            manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000000,100, locationListenerGps);             
        }
    } else {
        // set lat-long value in getset class for use of another activity
        gs.setLatitude(userLocationLat);
        gs.setLangitude(userLocationlong);
        setLocationName(userLocationLat, userLocationlong);
    }       
}

这里是覆盖onLocationchanged（）：

@Override
public void onLocationChanged(Location location) {
    userLocationLat =location.getLatitude();
    userLocationlong =location.getLongitude();
    prefLocation = getSharedPreferences("myLocation", MODE_WORLD_READABLE);
    SharedPreferences.Editor prefsEditor = prefLocation.edit();
    prefsEditor.putString("Lat", String.valueOf(userLocationLat));
    prefsEditor.putString("Long", String.valueOf(userLocationlong));

    gs.setLatitude(userLocationLat);
    gs.setLangitude(userLocationlong);
    List<Address> addresses;
    try {
        addresses = new Geocoder(SearchDishoom.this, Locale.getDefault())
                .getFromLocation(userLocationLat, userLocationlong, 1);
        Address obj = addresses.get(0);
        add = obj.getAddressLine(0);
        city = obj.getLocality();
        addressString = add + "," + city;
        gs.setCurrentAddressString(addressString);
        prefsEditor.putString("Address", addressString);
        prefsEditor.commit();
        tvLocation.setText(add + "," + city);           
    } catch (IOException e) {
        showToast("Unable to find location");
    }
}

即使我没有使用Geocoder获取位置，如果我输入城市名称，则会显示“无法找到位置”。
这是诀窍，GeoCoder正在使用模拟器，但没有在手机上工作（我尝试了2个不同的手机）。

我的项目是在API 17中构建的，没有任何logcat错误请给我任何提示或参考。

Answer 1

也许您应该检查“位置访问”设置并允许访问您的位置？..

Answer 2

虽然我无法立即告诉您的代码有什么问题，但您应该考虑使用位置库并让其他人做繁重的工作。请参阅：https://code.google.com/p/little-fluffy-location-library/

通过GPS或网络无法获得Lat和Long

2 个答案: