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.AbstractGalleryActivity; 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 AbstractGalleryActivity 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 46 @Override run(JobContext jc)47 public Address run(JobContext jc) { 48 ReverseGeocoder geocoder = new ReverseGeocoder(mContext.getAndroidContext()); 49 return geocoder.lookupAddress(mLatlng[0], mLatlng[1], true); 50 } 51 } 52 53 public interface AddressResolvingListener { onAddressAvailable(String address)54 public void onAddressAvailable(String address); 55 } 56 DetailsAddressResolver(AbstractGalleryActivity context)57 public DetailsAddressResolver(AbstractGalleryActivity context) { 58 mContext = context; 59 mHandler = new Handler(Looper.getMainLooper()); 60 } 61 resolveAddress(double[] latlng, AddressResolvingListener listener)62 public String resolveAddress(double[] latlng, AddressResolvingListener listener) { 63 mListener = listener; 64 mAddressLookupJob = mContext.getThreadPool().submit( 65 new AddressLookupJob(latlng), 66 new FutureListener<Address>() { 67 @Override 68 public void onFutureDone(final Future<Address> future) { 69 mAddressLookupJob = null; 70 if (!future.isCancelled()) { 71 mHandler.post(new Runnable() { 72 @Override 73 public void run() { 74 updateLocation(future.get()); 75 } 76 }); 77 } 78 } 79 }); 80 return GalleryUtils.formatLatitudeLongitude("(%f,%f)", latlng[0], latlng[1]); 81 } 82 updateLocation(Address address)83 private void updateLocation(Address address) { 84 if (address != null) { 85 Context context = mContext.getAndroidContext(); 86 String parts[] = { 87 address.getAdminArea(), 88 address.getSubAdminArea(), 89 address.getLocality(), 90 address.getSubLocality(), 91 address.getThoroughfare(), 92 address.getSubThoroughfare(), 93 address.getPremises(), 94 address.getPostalCode(), 95 address.getCountryName() 96 }; 97 98 String addressText = ""; 99 for (int i = 0; i < parts.length; i++) { 100 if (parts[i] == null || parts[i].isEmpty()) continue; 101 if (!addressText.isEmpty()) { 102 addressText += ", "; 103 } 104 addressText += parts[i]; 105 } 106 String text = String.format("%s : %s", DetailsHelper.getDetailsName( 107 context, MediaDetails.INDEX_LOCATION), addressText); 108 mListener.onAddressAvailable(text); 109 } 110 } 111 cancel()112 public void cancel() { 113 if (mAddressLookupJob != null) { 114 mAddressLookupJob.cancel(); 115 mAddressLookupJob = null; 116 } 117 } 118 } 119