Geocoder: Document behavior when no backend service is available.
Signed-off-by: Mike Lockwood <lockwood@android.com>
diff --git a/location/java/android/location/Geocoder.java b/location/java/android/location/Geocoder.java
index 709ad23..2ce1273 100644
--- a/location/java/android/location/Geocoder.java
+++ b/location/java/android/location/Geocoder.java
@@ -37,6 +37,10 @@
* reverse geocoded location description may vary, for example one
* might contain the full street address of the closest building, while
* another might contain only a city name and postal code.
+ *
+ * The Geocoder class requires a backend service that is not included in
+ * the core android framework. The Geocoder query methods will return an
+ * empty list if there no backend service in the platform.
*/
public final class Geocoder {
private static final String TAG = "Geocoder";
@@ -94,8 +98,8 @@
* @param longitude the longitude a point for the search
* @param maxResults max number of addresses to return. Smaller numbers (1 to 5) are recommended
*
- * @return a list of Address objects or null if no matches were
- * found.
+ * @return a list of Address objects. Returns null or empty list if no matches were
+ * found or there is no backend service available.
*
* @throws IllegalArgumentException if latitude is
* less than -90 or greater than 90
@@ -143,7 +147,8 @@
* @param locationName a user-supplied description of a location
* @param maxResults max number of results to return. Smaller numbers (1 to 5) are recommended
*
- * @return a list of Address objects or null if no matches were found.
+ * @return a list of Address objects. Returns null or empty list if no matches were
+ * found or there is no backend service available.
*
* @throws IllegalArgumentException if locationName is null
* @throws IOException if the network is unavailable or any other
@@ -192,7 +197,8 @@
* @param upperRightLatitude the latitude of the upper right corner of the bounding box
* @param upperRightLongitude the longitude of the upper right corner of the bounding box
*
- * @return a list of Address objects or null if no matches were found.
+ * @return a list of Address objects. Returns null or empty list if no matches were
+ * found or there is no backend service available.
*
* @throws IllegalArgumentException if locationName is null
* @throws IllegalArgumentException if any latitude is