1 /* 2 * Copyright (C) 2011 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.gallery3d.ui; 18 19 import android.content.Context; 20 import android.location.Address; 21 import android.os.Handler; 22 import android.os.Looper; 23 24 import com.android.gallery3d.app.GalleryActivity; 25 import com.android.gallery3d.data.MediaDetails; 26 import com.android.gallery3d.util.Future; 27 import com.android.gallery3d.util.FutureListener; 28 import com.android.gallery3d.util.GalleryUtils; 29 import com.android.gallery3d.util.ReverseGeocoder; 30 import com.android.gallery3d.util.ThreadPool.Job; 31 import com.android.gallery3d.util.ThreadPool.JobContext; 32 33 public class DetailsAddressResolver { 34 private AddressResolvingListener mListener; 35 private final GalleryActivity mContext; 36 private Future<Address> mAddressLookupJob; 37 private final Handler mHandler; 38 39 private class AddressLookupJob implements Job<Address> { 40 private double[] mLatlng; 41 AddressLookupJob(double[] latlng)42 protected AddressLookupJob(double[] latlng) { 43 mLatlng = latlng; 44 } 45 run(JobContext jc)46 public Address run(JobContext jc) { 47 ReverseGeocoder geocoder = new ReverseGeocoder(mContext.getAndroidContext()); 48 return geocoder.lookupAddress(mLatlng[0], mLatlng[1], true); 49 } 50 } 51 52 public interface AddressResolvingListener { onAddressAvailable(String address)53 public void onAddressAvailable(String address); 54 } 55 DetailsAddressResolver(GalleryActivity context)56 public DetailsAddressResolver(GalleryActivity context) { 57 mContext = context; 58 mHandler = new Handler(Looper.getMainLooper()); 59 } 60 resolveAddress(double[] latlng, AddressResolvingListener listener)61 public String resolveAddress(double[] latlng, AddressResolvingListener listener) { 62 mListener = listener; 63 mAddressLookupJob = mContext.getThreadPool().submit( 64 new AddressLookupJob(latlng), 65 new FutureListener<Address>() { 66 public void onFutureDone(final Future<Address> future) { 67 mAddressLookupJob = null; 68 if (!future.isCancelled()) { 69 mHandler.post(new Runnable() { 70 public void run() { 71 updateLocation(future.get()); 72 } 73 }); 74 } 75 } 76 }); 77 return GalleryUtils.formatLatitudeLongitude("(%f,%f)", latlng[0], latlng[1]); 78 } 79 updateLocation(Address address)80 private void updateLocation(Address address) { 81 if (address != null) { 82 Context context = mContext.getAndroidContext(); 83 String parts[] = { 84 address.getAdminArea(), 85 address.getSubAdminArea(), 86 address.getLocality(), 87 address.getSubLocality(), 88 address.getThoroughfare(), 89 address.getSubThoroughfare(), 90 address.getPremises(), 91 address.getPostalCode(), 92 address.getCountryName() 93 }; 94 95 String addressText = ""; 96 for (int i = 0; i < parts.length; i++) { 97 if (parts[i] == null || parts[i].isEmpty()) continue; 98 if (!addressText.isEmpty()) { 99 addressText += ", "; 100 } 101 addressText += parts[i]; 102 } 103 String text = String.format("%s : %s", DetailsHelper.getDetailsName( 104 context, MediaDetails.INDEX_LOCATION), addressText); 105 mListener.onAddressAvailable(text); 106 } 107 } 108 cancel()109 public void cancel() { 110 if (mAddressLookupJob != null) { 111 mAddressLookupJob.cancel(); 112 mAddressLookupJob = null; 113 } 114 } 115 } 116