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authorAnton Tananaev <anton.tananaev@gmail.com>2012-06-20 23:19:03 +0400
committerAnton Tananaev <anton.tananaev@gmail.com>2012-06-20 23:19:03 +0400
commitc498c14727a90539c008f7b05185a62d6ee6512e (patch)
treef656fc904f8f0fa706695d0d42b18d566d8c5563 /src/org/traccar/geocode/GoogleReverseGeocoder.java
parent23bf37045d96197ed43a02b48b9996103922593a (diff)
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Add reverse geocoding
Diffstat (limited to 'src/org/traccar/geocode/GoogleReverseGeocoder.java')
-rw-r--r--src/org/traccar/geocode/GoogleReverseGeocoder.java60
1 files changed, 60 insertions, 0 deletions
diff --git a/src/org/traccar/geocode/GoogleReverseGeocoder.java b/src/org/traccar/geocode/GoogleReverseGeocoder.java
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+++ b/src/org/traccar/geocode/GoogleReverseGeocoder.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright 2012 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.geocode;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.URL;
+import java.net.URLConnection;
+import org.traccar.helper.Log;
+
+/**
+ * Reverse geocoder implementation using Google
+ */
+public class GoogleReverseGeocoder implements ReverseGeocoder {
+
+ private final static String MARKER = "\"formatted_address\" : \"";
+
+ /**
+ * Get address string by coordinates
+ */
+ public String getAddress(double latitude, double longitude) {
+
+ try {
+ URL url = new URL("http://maps.googleapis.com/maps/api/geocode/json?latlng=" + latitude + "," + longitude + "&sensor=false");
+ URLConnection connection = url.openConnection();
+ BufferedReader reader = new BufferedReader(
+ new InputStreamReader(connection.getInputStream()));
+
+ // Find address line
+ String line;
+ while ((line = reader.readLine()) != null) {
+ int index = line.indexOf(MARKER);
+ if (index != -1) {
+ return line.substring(index + MARKER.length(), line.length() - 2);
+ }
+ }
+
+ reader.close();
+
+ } catch(Exception error) {
+ Log.warning(error.getMessage());
+ }
+
+ return null;
+ }
+
+}