百度地图---城市检索(周边，区域)

城市检索(周边，区域)

package baidumapsdk.demo.search;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.EditText;
import android.widget.Toast;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.CircleOptions;
import com.baidu.mapapi.map.GroundOverlayOptions;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MarkerOptions;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.map.Stroke;
import com.baidu.mapapi.map.SupportMapFragment;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.model.LatLngBounds;
import com.baidu.mapapi.overlayutil.PoiOverlay;
import com.baidu.mapapi.search.core.CityInfo;
import com.baidu.mapapi.search.core.PoiInfo;
import com.baidu.mapapi.search.core.SearchResult;
import com.baidu.mapapi.search.poi.OnGetPoiSearchResultListener;
import com.baidu.mapapi.search.poi.PoiBoundSearchOption;
import com.baidu.mapapi.search.poi.PoiCitySearchOption;
import com.baidu.mapapi.search.poi.PoiDetailResult;
import com.baidu.mapapi.search.poi.PoiDetailSearchOption;
import com.baidu.mapapi.search.poi.PoiIndoorResult;
import com.baidu.mapapi.search.poi.PoiNearbySearchOption;
import com.baidu.mapapi.search.poi.PoiResult;
import com.baidu.mapapi.search.poi.PoiSearch;
import com.baidu.mapapi.search.poi.PoiSortType;
import com.baidu.mapapi.search.sug.OnGetSuggestionResultListener;
import com.baidu.mapapi.search.sug.SuggestionResult;
import com.baidu.mapapi.search.sug.SuggestionSearch;
import com.baidu.mapapi.search.sug.SuggestionSearchOption;
import java.util.ArrayList;
import java.util.List;
import baidumapsdk.demo.R;
/**
* 演示poi搜索功能
*/
public class PoiSearchDemo extends FragmentActivity implements
OnGetPoiSearchResultListener, OnGetSuggestionResultListener {
// Poi检索
private PoiSearch mPoiSearch = null;
//建议热词搜索
private SuggestionSearch mSuggestionSearch = null;
private BaiduMap mBaiduMap = null;
private List<String> suggest;
/**
* 搜索关键字输入窗口
*/
private EditText editCity = null;
private AutoCompleteTextView keyWorldsView = null;
private ArrayAdapter<String> sugAdapter = null;
private int loadIndex = 0;
/**
* 定义搜索的区域
*/
LatLng center = new LatLng(39.92235, 116.380338);
int radius = 100;
LatLng southwest = new LatLng( 39.92235, 116.380338 );
LatLng northeast = new LatLng( 39.947246, 116.414977);
LatLngBounds searchbound = new LatLngBounds.Builder().include(southwest).include(northeast).build();
int searchType = 0;
// 搜索的类型，在显示时区分
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_poisearch);
// 初始化搜索模块，注册搜索事件监听
mPoiSearch = PoiSearch.newInstance();
mPoiSearch.setOnGetPoiSearchResultListener(this);
// 初始化建议搜索模块，注册建议搜索事件监听
mSuggestionSearch = SuggestionSearch.newInstance();
mSuggestionSearch.setOnGetSuggestionResultListener(this);
//视图的初始化
editCity = (EditText) findViewById(R.id.city);
keyWorldsView = (AutoCompleteTextView) findViewById(R.id.searchkey);
sugAdapter = new ArrayAdapter<String>(this,
android.R.layout.simple_dropdown_item_1line);
keyWorldsView.setAdapter(sugAdapter);
keyWorldsView.setThreshold(1);
mBaiduMap = ((SupportMapFragment) (getSupportFragmentManager()
.findFragmentById(R.id.map))).getBaiduMap();
/**
* 当输入关键字变化时，动态更新建议列表
*/
keyWorldsView.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable arg0) {
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
}
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
if (cs.length() <= 0) {
return;
}
/**
* 使用建议搜索服务获取建议列表，结果在onSuggestionResult()中更新
* 根据指定的位置进行搜索，搜索的结果从远到近排序
*/
mSuggestionSearch
.requestSuggestion((new SuggestionSearchOption())
.keyword(cs.toString())
.city(editCity.getText().toString())
.location(LatLng)
);
}
});
}
@Override
protected void onPause() {
super.onPause();
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onDestroy() {
mPoiSearch.destroy();
mSuggestionSearch.destroy();
super.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
}
/**
* 响应城市内搜索点击事件
*
* @param v
*/
public void searchButtonProcess(View v) {
searchType = 1;
String citystr = editCity.getText().toString();
String keystr = keyWorldsView.getText().toString();
mPoiSearch.searchInCity((new PoiCitySearchOption())
.city(citystr)
.keyword(keystr)
.pageNum(loadIndex));
}
/**
* 响应周边搜索
*
* @param v
*/
public void
searchNearbyProcess(View v) {
searchType = 2;
PoiNearbySearchOption nearbySearchOption = new PoiNearbySearchOption()
.keyword(keyWorldsView.getText()
.toString())
.sortType(PoiSortType.distance_from_near_to_far)
.location(center)
.radius(radius)
.pageNum(loadIndex);
mPoiSearch.searchNearby(nearbySearchOption);
}
/**
* 响应区域搜索点击事件
*
* @param v
*/
public void searchBoundProcess(View v) {
searchType = 3;
mPoiSearch.searchInBound(new PoiBoundSearchOption().bound(searchbound)
.keyword(keyWorldsView.getText().toString()));
}
/**
* 获取POI搜索结果，包括searchInCity，searchNearby，searchInBound返回的搜索结果
* @param result
*/
public void onGetPoiResult(PoiResult result) {
if (result == null || result.error == SearchResult.ERRORNO.RESULT_NOT_FOUND) {
Toast.makeText(PoiSearchDemo.this, "未找到结果", Toast.LENGTH_LONG)
.show();
return;
}
if (result.error == SearchResult.ERRORNO.NO_ERROR) {
mBaiduMap.clear();
//添加覆盖物
PoiOverlay overlay = new MyPoiOverlay(mBaiduMap);
mBaiduMap.setOnMarkerClickListener(overlay);
overlay.setData(result);
overlay.addToMap();
overlay.zoomToSpan();
switch( searchType ) {
case 2:
showNearbyArea(center, radius);
break;
case 3:
showBound(searchbound);
break;
default:
break;
}
return;
}
if (result.error == SearchResult.ERRORNO.AMBIGUOUS_KEYWORD) {
// 当输入关键字在本市没有找到，但在其他城市找到时，返回包含该关键字信息的城市列表
String strInfo = "在";
for (CityInfo cityInfo : result.getSuggestCityList()) {
strInfo += cityInfo.city;
strInfo += ",";
}
strInfo += "找到结果";
Toast.makeText(PoiSearchDemo.this, strInfo, Toast.LENGTH_LONG)
.show();
}
}
/**
* 获取POI详情搜索结果，得到searchPoiDetail返回的搜索结果
* @param result
*/
public void onGetPoiDetailResult(PoiDetailResult result) {
if (result.error != SearchResult.ERRORNO.NO_ERROR) {
Toast.makeText(PoiSearchDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT)
.show();
} else {
Toast.makeText(PoiSearchDemo.this, result.getName() + ": " + result.getAddress(), Toast.LENGTH_SHORT)
.show();
}
}
@Override
public void onGetPoiIndoorResult(PoiIndoorResult poiIndoorResult) {
}
/**
* 获取在线建议搜索结果，得到requestSuggestion返回的搜索结果
* @param res
*/
@Override
public void onGetSuggestionResult(SuggestionResult res) {
if (res == null || res.getAllSuggestions() == null) {
return;
}
suggest = new ArrayList<String>();
for (SuggestionResult.SuggestionInfo info : res.getAllSuggestions()) {
if (info.key != null) {
suggest.add(info.key);
}
}
sugAdapter = new ArrayAdapter<String>(PoiSearchDemo.this, android.R.layout.simple_dropdown_item_1line, suggest);
keyWorldsView.setAdapter(sugAdapter);
sugAdapter.notifyDataSetChanged();
}
/**
* 封装覆盖物
*/
private class MyPoiOverlay extends PoiOverlay {
public MyPoiOverlay(BaiduMap baiduMap) {
super(baiduMap);
}
@Override
public boolean onPoiClick(int index) {
super.onPoiClick(index);
PoiInfo poi = getPoiResult().getAllPoi().get(index);
mPoiSearch.searchPoiDetail((new PoiDetailSearchOption())
.poiUid(poi.uid));
return true;
}
}
/**
* 对周边检索的范围进行绘制
* @param center
* @param radius
*/
public void showNearbyArea( LatLng center, int radius) {
BitmapDescriptor centerBitmap = BitmapDescriptorFactory
.fromResource(R.drawable.icon_geo);
MarkerOptions ooMarker = new MarkerOptions().position(center).icon(centerBitmap);
mBaiduMap.addOverlay(ooMarker);
OverlayOptions ooCircle = new CircleOptions().fillColor( 0xCCCCCC00 )
.center(center).stroke(new Stroke(5, 0xFFFF00FF ))
.radius(radius);
mBaiduMap.addOverlay(ooCircle);
}
/**
* 对区域检索的范围进行绘制
* @param bounds
*/
public void showBound( LatLngBounds bounds) {
BitmapDescriptor bdGround = BitmapDescriptorFactory
.fromResource(R.drawable.ground_overlay);
OverlayOptions ooGround = new GroundOverlayOptions()
.positionFromBounds(bounds).image(bdGround).transparency(0.8f);
mBaiduMap.addOverlay(ooGround);
MapStatusUpdate u = MapStatusUpdateFactory
.newLatLng(bounds.getCenter());
mBaiduMap.setMapStatus(u);
bdGround.recycle();
}
}

显示和管理多个overlay的基类：

package com.baidu.mapapi.overlayutil;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BaiduMap.OnPolylineClickListener;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.Marker;
import com.baidu.mapapi.map.Overlay;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.model.LatLngBounds;
import java.util.ArrayList;
import java.util.List;
import static com.baidu.mapapi.map.BaiduMap.OnMarkerClickListener;
/**
* 该类提供一个能够显示和管理多个Overlay的基类
* <p>
* 复写{@link #getOverlayOptions()} 设置欲显示和管理的Overlay列表
* </p>
* <p>
* 通过
* {@link com.baidu.mapapi.map.BaiduMap#setOnMarkerClickListener(com.baidu.mapapi.map.BaiduMap.OnMarkerClickListener)}
* 将覆盖物点击事件传递给OverlayManager后，OverlayManager才能响应点击事件。
* <p>
* 复写{@link #onMarkerClick(com.baidu.mapapi.map.Marker)} 处理Marker点击事件
* </p>
*/
public abstract class OverlayManager implements OnMarkerClickListener, OnPolylineClickListener {
BaiduMap mBaiduMap = null;
//存放添加的 OverlayOptions
private List<OverlayOptions> mOverlayOptionList = null;
//存放添加的 Overlay
List<Overlay> mOverlayList = null;
/**
* 通过一个BaiduMap 对象构造
*
* @param baiduMap
*/
public OverlayManager(BaiduMap baiduMap) {
mBaiduMap = baiduMap;
if (mOverlayOptionList == null) {
mOverlayOptionList = new ArrayList<OverlayOptions>();
}
if (mOverlayList == null) {
mOverlayList = new ArrayList<Overlay>();
}
}
/**
* 覆写此方法设置要管理的Overlay列表
*
* @return 管理的Overlay列表
*/
public abstract List<OverlayOptions> getOverlayOptions();
/**
* 将所有Overlay 添加到地图上
*/
public final void addToMap() {
if (mBaiduMap == null) {
return;
}
removeFromMap();
List<OverlayOptions> overlayOptions = getOverlayOptions();
if (overlayOptions != null) {
mOverlayOptionList.addAll(getOverlayOptions());
}
for (OverlayOptions option : mOverlayOptionList) {
mOverlayList.add(mBaiduMap.addOverlay(option));
}
}
/**
* 将所有Overlay 从 地图上消除
*/
public final void removeFromMap() {
if (mBaiduMap == null) {
return;
}
for (Overlay marker : mOverlayList) {
marker.remove();
}
mOverlayOptionList.clear();
mOverlayList.clear();
}
/**
* 缩放地图，使所有Overlay都在合适的视野内
* 注： 该方法只对Marker类型的overlay有效
*
*/
public void zoomToSpan() {
if (mBaiduMap == null) {
return;
}
if (mOverlayList.size() > 0) {
LatLngBounds.Builder builder = new LatLngBounds.Builder();
for (Overlay overlay : mOverlayList) {
//
polyline 中的点可能太多，只按marker 缩放
if (overlay instanceof Marker) {
builder.include(((Marker) overlay).getPosition());
}
}
// 设置地图的状态
mBaiduMap.setMapStatus(MapStatusUpdateFactory
.newLatLngBounds(builder.build()));
}
}
}

用于显示poi的overlay:

package com.baidu.mapapi.overlayutil;
import android.os.Bundle;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.Marker;
import com.baidu.mapapi.map.MarkerOptions;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.map.Polyline;
import com.baidu.mapapi.search.poi.PoiResult;
import java.util.ArrayList;
import java.util.List;
/**
* 用于显示poi的overly
*/
public class PoiOverlay extends OverlayManager {
//显示的最大数据
private static final int MAX_POI_SIZE = 10;
//检索的结果
private PoiResult mPoiResult = null;
/**
* 构造函数
* @param baiduMap
* 该 PoiOverlay 引用的 BaiduMap 对象
*/
public PoiOverlay(BaiduMap baiduMap) {
super(baiduMap);
}
/**
* 设置POI数据
* @param poiResult
* 设置POI数据
*/
public void setData(PoiResult poiResult) {
this.mPoiResult = poiResult;
}
@Override
public final List<OverlayOptions> getOverlayOptions() {
if (mPoiResult == null || mPoiResult.getAllPoi() == null) {
return null;
}
List<OverlayOptions> markerList = new ArrayList<OverlayOptions>();
int markerSize = 0;
for (int i = 0; i < mPoiResult.getAllPoi().size()
&& markerSize < MAX_POI_SIZE; i++) {
if (mPoiResult.getAllPoi().get(i).location == null) {
continue;
}
markerSize++;
Bundle bundle = new Bundle();
bundle.putInt("index", i);
markerList.add(new MarkerOptions()
.icon(BitmapDescriptorFactory.fromAssetWithDpi("Icon_mark"
+ markerSize + ".png")).extraInfo(bundle)
.position(mPoiResult.getAllPoi().get(i).location));
}
return markerList;
}
/**
* 获取该 PoiOverlay 的 poi数据
* @return
*/
public PoiResult getPoiResult() {
return mPoiResult;
}
/**
* 覆写此方法以改变默认点击行为
*
* @param i
*
被点击的poi在
*
{@link com.baidu.mapapi.search.poi.PoiResult#getAllPoi()} 中的索引
* @return
*/
public boolean onPoiClick(int i) {
//
if (mPoiResult.getAllPoi() != null
//
&& mPoiResult.getAllPoi().get(i) != null) {
//
Toast.makeText(BMapManager.getInstance().getContext(),
//
mPoiResult.getAllPoi().get(i).name, Toast.LENGTH_LONG)
//
.show();
//
}
return false;
}
@Override
public final boolean onMarkerClick(Marker marker) {
if (!mOverlayList.contains(marker)) {
return false;
}
if (marker.getExtraInfo() != null) {
return onPoiClick(marker.getExtraInfo().getInt("index"));
}
return false;
}
@Override
public boolean onPolylineClick(Polyline polyline) {
// TODO Auto-generated method stub
return false;
}
}