1 files changed, 104 insertions, 0 deletions
diff --git a/java/com/android/contacts/common/location/UpdateCountryService.java b/java/com/android/contacts/common/location/UpdateCountryService.java
new file mode 100644
index 000000000..f23e09e20
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+++ b/java/com/android/contacts/common/location/UpdateCountryService.java
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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 com.android.contacts.common.location;
+
+import android.app.IntentService;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.location.Address;
+import android.location.Geocoder;
+import android.location.Location;
+import android.preference.PreferenceManager;
+import android.util.Log;
+import java.io.IOException;
+import java.util.List;
+
+/**
+ * Service used to perform asynchronous geocoding from within a broadcast receiver. Given a {@link
+ * Location}, convert it into a country code, and save it in shared preferences.
+ */
+public class UpdateCountryService extends IntentService {
+
+  private static final String TAG = UpdateCountryService.class.getSimpleName();
+
+  private static final String ACTION_UPDATE_COUNTRY = "saveCountry";
+
+  private static final String KEY_INTENT_LOCATION = "location";
+
+  public UpdateCountryService() {
+    super(TAG);
+  }
+
+  public static void updateCountry(Context context, Location location) {
+    final Intent serviceIntent = new Intent(context, UpdateCountryService.class);
+    serviceIntent.setAction(ACTION_UPDATE_COUNTRY);
+    serviceIntent.putExtra(UpdateCountryService.KEY_INTENT_LOCATION, location);
+    context.startService(serviceIntent);
+  }
+
+  @Override
+  protected void onHandleIntent(Intent intent) {
+    if (intent == null) {
+      Log.d(TAG, "onHandleIntent: could not handle null intent");
+      return;
+    }
+    if (ACTION_UPDATE_COUNTRY.equals(intent.getAction())) {
+      final Location location = intent.getParcelableExtra(KEY_INTENT_LOCATION);
+      final String country = getCountryFromLocation(getApplicationContext(), location);
+
+      if (country == null) {
+        return;
+      }
+
+      final SharedPreferences prefs =
+          PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
+
+      final Editor editor = prefs.edit();
+      editor.putLong(CountryDetector.KEY_PREFERENCE_TIME_UPDATED, System.currentTimeMillis());
+      editor.putString(CountryDetector.KEY_PREFERENCE_CURRENT_COUNTRY, country);
+      editor.commit();
+    }
+  }
+
+  /**
+   * Given a {@link Location}, return a country code.
+   *
+   * @return the ISO 3166-1 two letter country code
+   */
+  private String getCountryFromLocation(Context context, Location location) {
+    final Geocoder geocoder = new Geocoder(context);
+    String country = null;
+    try {
+      double latitude = location.getLatitude();
+      // Latitude has to be between 90 and -90 (latitude of north and south poles wrt equator)
+      if (latitude <= 90 && latitude >= -90) {
+        final List<Address> addresses =
+            geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 1);
+        if (addresses != null && addresses.size() > 0) {
+          country = addresses.get(0).getCountryCode();
+        }
+      } else {
+        Log.w(TAG, "Invalid latitude");
+      }
+    } catch (IOException e) {
+      Log.w(TAG, "Exception occurred when getting geocoded country from location");
+    }
+    return country;
+  }
+}