1 /* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.server.location; 18 19 import android.content.Context; 20 import android.location.Address; 21 import android.location.GeocoderParams; 22 import android.location.IGeocodeProvider; 23 import android.os.Handler; 24 import android.os.RemoteException; 25 import android.util.Log; 26 27 import com.android.server.ServiceWatcher; 28 import java.util.List; 29 30 /** 31 * Proxy for IGeocodeProvider implementations. 32 */ 33 public class GeocoderProxy { 34 private static final String TAG = "GeocoderProxy"; 35 36 private static final String SERVICE_ACTION = "com.android.location.service.GeocodeProvider"; 37 38 private final Context mContext; 39 private final ServiceWatcher mServiceWatcher; 40 41 public static GeocoderProxy createAndBind(Context context, 42 int overlaySwitchResId, int defaultServicePackageNameResId, 43 int initialPackageNamesResId, Handler handler) { 44 GeocoderProxy proxy = new GeocoderProxy(context, overlaySwitchResId, 45 defaultServicePackageNameResId, initialPackageNamesResId, handler); 46 if (proxy.bind()) { 47 return proxy; 48 } else { 49 return null; 50 } 51 } 52 53 private GeocoderProxy(Context context, 54 int overlaySwitchResId, int defaultServicePackageNameResId, 55 int initialPackageNamesResId, Handler handler) { 56 mContext = context; 57 58 mServiceWatcher = new ServiceWatcher(mContext, TAG, SERVICE_ACTION, overlaySwitchResId, 59 defaultServicePackageNameResId, initialPackageNamesResId, null, handler); 60 } 61 62 private boolean bind () { 63 return mServiceWatcher.start(); 64 } 65 66 private IGeocodeProvider getService() { 67 return IGeocodeProvider.Stub.asInterface(mServiceWatcher.getBinder()); 68 } 69 70 public String getConnectedPackageName() { 71 return mServiceWatcher.getBestPackageName(); 72 } 73 74 public String getFromLocation(double latitude, double longitude, int maxResults, 75 GeocoderParams params, List<Address> addrs) { 76 IGeocodeProvider provider = getService(); 77 if (provider != null) { 78 try { 79 return provider.getFromLocation(latitude, longitude, maxResults, params, addrs); 80 } catch (RemoteException e) { 81 Log.w(TAG, e); 82 } 83 } 84 return "Service not Available"; 85 } 86 87 public String getFromLocationName(String locationName, 88 double lowerLeftLatitude, double lowerLeftLongitude, 89 double upperRightLatitude, double upperRightLongitude, int maxResults, 90 GeocoderParams params, List<Address> addrs) { 91 IGeocodeProvider provider = getService(); 92 if (provider != null) { 93 try { 94 return provider.getFromLocationName(locationName, lowerLeftLatitude, 95 lowerLeftLongitude, upperRightLatitude, upperRightLongitude, 96 maxResults, params, addrs); 97 } catch (RemoteException e) { 98 Log.w(TAG, e); 99 } 100 } 101 return "Service not Available"; 102 } 103 104 } 105