I am going out of my mind for the last two days with an IllegalArgumentException
error I receive in Android code when trying to get a coordinates out of an address, or even reverse, get address out of longitude and latitude. This is the code, but I cannot see an error. It is a standard code snippet that is easily found on a Google search.
public GeoPoint determineLatLngFromAddress(Context appContext, String strAddress) {
Geocoder geocoder = new Geocoder(appContext, Locale.getDefault());
GeoPoint g = null;
try {
System.out.println("str addres: " + strAddress);
List<Address> addresses = geocoder.getFromLocationName(strAddress, 5);
if (addresses.size() > 0) {
g = new GeoPoint(
(int) (addresses.get(0).getLatitude() * 1E6),
(int) (addresses.get(0).getLongitude() * 1E6)
);
}
} catch (Exception e) {
throw new IllegalArgumentException("locationName == null");
}
return g;
}
These are the permissions from manifest.xml file:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
I do have the Google API key declared too: <uses-library android:name="com.google.android.maps" />
From the code snippet above, geocoder
is not null
, neither is the address
or appContext
, and I stumble here: geocoder.getFromLocationName(strAddress, 5);
I did a lot of Google searching and found nothing that worked, and the most important info I found is this:
The Geocoder class requires a backend service that is not included in the core android framework.
Sooo, I am confuzed now. What do I have to call, import, add, use in code.... to make this work? I am using Google API 2.2, API level 8. If somebody has found a solution for this, or a pointer for documentation, something that I didn't discover, please let us know.
I had a similar problem and found that polling the Geocoder until i got a result worked. Here is how i did it, so far works great.
try {
List<Address> geoResults = geocoder.getFromLocationName("<address goes here>", 1);
while (geoResults.size()==0) {
geoResults = geocoder.getFromLocationName("<address goes here>", 1);
}
if (geoResults.size()>0) {
Address addr = geoResults.get(0);
myLocation.setLatitude(addr.getLatitude());
myLocation.setLongitude(addr.getLongitude());
}
} catch (Exception e) {
System.out.print(e.getMessage());
}