Android 百度地图POI搜索功能实例代码

<?xml version="1.0" encoding="utf-8"?>
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<linearlayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dip"
android:orientation="horizontal" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="在" >
</textview>
<edittext
android:id="@+id/city"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:text="北京" />
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="市内找" >
</textview>
<autocompletetextview
android:id="@+id/searchkey"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="0.88"
android:text="餐厅" />
</linearlayout>
<linearlayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dip"
android:orientation="horizontal" >
<button
android:id="@+id/search"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="12"
android:background="@drawable/button_style"
android:padding="10dip"
android:text="开始" />
<button
android:id="@+id/map_next_data"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="12"
android:background="@drawable/button_style"
android:padding="10dip"
android:text="下一组数据" />
</linearlayout>
<fragment
android:id="@+id/map"
android:layout_width="match_parent"
android:layout_height="match_parent"
class="com.baidu.mapapi.map.texturemapfragment" />
</linearlayout> 

using com.baidu.mapapi.map;
using com.baidu.mapapi.model;
using system.collections.generic;
namespace bdmapv371demos.srcoverlayutil
{
/// <summary>
/// 提供一个能够显示和管理多个overlay的基类。
/// 将覆盖物点击事件传递给overlaymanager后，overlaymanager才能响应点击事件。
/// 在markerclick事件中处理marker点击事件。
/// </summary>
public abstract class overlaymanager : java.lang.object, baidumap.ionmarkerclicklistener, baidumap.ionpolylineclicklistener
{
baidumap mbaidumap = null;
private list<overlayoptions> moverlayoptionlist = null;
protected list<overlay> moverlaylist = null;
public overlaymanager(baidumap baidumap)
{
mbaidumap = baidumap;
mbaidumap.setonmarkerclicklistener(this);
if (moverlayoptionlist == null)
{
moverlayoptionlist = new list<overlayoptions>();
}
if (moverlaylist == null)
{
moverlaylist = new list<overlay>();
}
}
/// <summary>
/// 重写此方法设置要管理的overlay列表
/// </summary>
/// <returns></returns>
public abstract list<overlayoptions> getoverlayoptions();
/// <summary>
/// 将所有overlay 添加到地图上
/// </summary>
public void addtomap()
{
if (mbaidumap == null)
{
return;
}
removefrommap();
list<overlayoptions> overlayoptions = getoverlayoptions();
if (overlayoptions != null)
{
moverlayoptionlist.addrange(getoverlayoptions());
}
foreach (overlayoptions option in moverlayoptionlist)
{
moverlaylist.add(mbaidumap.addoverlay(option));
}
}
/// <summary>
/// 将所有overlay从地图上消除
/// </summary>
public void removefrommap()
{
if (mbaidumap == null)
{
return;
}
foreach (overlay marker in moverlaylist)
{
marker.remove();
}
moverlayoptionlist.clear();
moverlaylist.clear();
}
/// <summary>
/// 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
/// </summary>
public void zoomtospan()
{
if (mbaidumap == null)
{
return;
}
if (moverlaylist.count > 0)
{
latlngbounds.builder builder = new latlngbounds.builder();
foreach (overlay overlay in moverlaylist)
{
// polyline 中的点可能太多，只按marker缩放
if (overlay is marker)
{
builder.include(((marker)overlay).position);
}
}
mbaidumap.setmapstatus(mapstatusupdatefactory
.newlatlngbounds(builder.build()));
}
}
public virtual bool onmarkerclick(marker marker)
{
return false;
}
public virtual bool onpolylineclick(polyline polyline)
{
return false;
}
}
} 

using android.os;
using android.widget;
using com.baidu.mapapi;
using com.baidu.mapapi.map;
using com.baidu.mapapi.search.poi;
using system.collections.generic;
namespace bdmapv371demos.srcoverlayutil
{
/// <summary>
/// 显示一条公交详情结果的overlay，继承自该类的子类可显示其他类型的overlay
/// </summary>
public class poioverlay : overlaymanager
{
private static readonly int maxpoisize = 10;
private poiresult mpoiresult = null;
public poioverlay(baidumap baidumap) : base(baidumap)
{
}
/// <summary>
/// 设置poi数据
/// </summary>
/// <param name="poiresult">poi结果数据</param>
public void setdata(poiresult poiresult)
{
this.mpoiresult = poiresult;
}
public override list<overlayoptions> getoverlayoptions()
{
if (mpoiresult == null || mpoiresult.allpoi == null)
{
return null;
}
list<overlayoptions> markerlist = new list<overlayoptions>();
int markersize = 0;
for (int i = 0; i < mpoiresult.allpoi.count && markersize < maxpoisize; i++)
{
if (mpoiresult.allpoi[i].location == null)
{
continue;
}
markersize++;
bundle bundle = new bundle();
bundle.putint("index", i);
markerlist.add(new markeroptions()
.invokeicon(bitmapdescriptorfactory.fromassetwithdpi("icon_mark"
+ markersize + ".png")).invokeextrainfo(bundle)
.invokeposition(mpoiresult.allpoi[i].location));
}
return markerlist;
}
/// <summary>
/// 获取该 poioverlay 的 poi数据
/// </summary>
public poiresult getpoiresult()
{
return mpoiresult;
}
/// <summary>
/// 重写此方法可改变默认点击行为
/// </summary>
/// <param name="i">被点击的poi在poiresult.allpoi中的索引</param>
/// <returns></returns>
public virtual bool onpoiclick(int i)
{
if (mpoiresult.allpoi != null && mpoiresult.allpoi[i] != null)
{
toast.maketext(bmapmanager.context,
mpoiresult.allpoi[i].name, toastlength.long).show();
}
return false;
}
public override bool onmarkerclick(marker marker)
{
if (!moverlaylist.contains(marker))
{
return false;
}
if (marker.extrainfo != null)
{
return onpoiclick(marker.extrainfo.getint("index"));
}
return false;
}
public override bool onpolylineclick(polyline polyline)
{
return false;
}
}
} 

using android.app;
using android.content.pm;
using android.os;
using android.support.v4.app;
using android.widget;
using bdmapv371demos.srcoverlayutil;
using com.baidu.mapapi.map;
using com.baidu.mapapi.search.core;
using com.baidu.mapapi.search.poi;
using com.baidu.mapapi.search.sug;
namespace bdmapv371demos.srcsdkdemos
{
/// <summary>
/// 演示poi搜索功能
/// </summary>
[activity(label = "@string/demo_name_poi",
configurationchanges = configchanges.orientation | configchanges.keyboardhidden,
screenorientation = screenorientation.sensor)]
public class demo12poisearch : fragmentactivity
{
private poisearch mpoisearch = null;
private suggestionsearch msuggestionsearch = null;
private baidumap mbaidumap = null;
// 搜索关键字输入窗口
private autocompletetextview keyworldsview = null;
private arrayadapter<string> sugadapter = null;
private int load_index = 0;
protected override void oncreate(bundle savedinstancestate)
{
base.oncreate(savedinstancestate);
setcontentview(resource.layout.demo12_poisearch);
// 初始化搜索模块，注册搜索事件监听
mpoisearch = poisearch.newinstance();
mpoisearch.getpoiresult += (s, e) =>
{
var result = e.p0;
if (result == null
|| result.error == searchresult.errorno.resultnotfound)
{
return;
}
if (result.error == searchresult.errorno.noerror)
{
mbaidumap.clear();
poioverlay overlay = new mypoioverlay(this, mbaidumap);
mbaidumap.setonmarkerclicklistener(overlay);
overlay.setdata(result);
overlay.addtomap();
overlay.zoomtospan();
return;
}
if (result.error == searchresult.errorno.ambiguouskeyword)
{
// 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";
foreach (cityinfo cityinfo in result.suggestcitylist)
{
strinfo += cityinfo.city;
strinfo += ",";
}
strinfo += "找到结果";
toast.maketext(this, strinfo, toastlength.long)
.show();
}
};
mpoisearch.getpoidetailresult += (s, e) =>
{
var result = e.p0;
if (result.error != searchresult.errorno.noerror)
{
toast.maketext(this, "抱歉，未找到结果", toastlength.short).show();
}
else
{
toast.maketext(this, "成功，查看详情页面", toastlength.short).show();
}
};
msuggestionsearch = suggestionsearch.newinstance();
msuggestionsearch.getsuggestionresult += (s, e) =>
{
var res = e.p0;
if (res == null || res.allsuggestions == null) return;
sugadapter.clear();
foreach (suggestionresult.suggestioninfo info in res.allsuggestions)
{
if (info.key != null) sugadapter.add(info.key);
}
sugadapter.notifydatasetchanged();
};
keyworldsview = findviewbyid<autocompletetextview>(resource.id.searchkey);
sugadapter = new arrayadapter<string>(this, android.resource.layout.simpledropdownitem1line);
keyworldsview.adapter = sugadapter;
texturemapfragment map1 = fragmentmanager.findfragmentbyid<texturemapfragment>(resource.id.map);
mbaidumap = map1.baidumap;
// 当输入关键字变化时，动态更新建议列表
keyworldsview.aftertextchanged += (sender, e) => { };
keyworldsview.beforetextchanged += (sender, e) => { };
keyworldsview.textchanged += (sender, e) =>
{
string s = e.text.tostring();
if (s.length <= 0) return;
string city = (findviewbyid<edittext>(resource.id.city)).text;
// 使用建议搜索服务获取建议列表，结果在onsuggestionresult()中更新
msuggestionsearch.requestsuggestion(
new suggestionsearchoption().keyword(s).city(city));
};
button btnsearch = findviewbyid<button>(resource.id.search);
btnsearch.click += delegate
{
searchbuttonprocess();
};
button btnnext = findviewbyid<button>(resource.id.map_next_data);
btnnext.click += delegate
{
load_index++;
searchbuttonprocess();
};
}
protected override void onpause()
{
base.onpause();
}
protected override void onresume()
{
base.onresume();
}
protected override void ondestroy()
{
mpoisearch.destroy();
msuggestionsearch.destroy();
base.ondestroy();
}
protected override void onsaveinstancestate(bundle outstate)
{
base.onsaveinstancestate(outstate);
}
protected override void onrestoreinstancestate(bundle savedinstancestate)
{
base.onrestoreinstancestate(savedinstancestate);
}
public void searchbuttonprocess()
{
edittext editcity = findviewbyid<edittext>(resource.id.city);
edittext editsearchkey = findviewbyid<edittext>(resource.id.searchkey);
mpoisearch.searchincity(new poicitysearchoption()
.city(editcity.text)
.keyword(editsearchkey.text)
.pagenum(load_index));
}
private class mypoioverlay : poioverlay
{
demo12poisearch poisearchdemo;
public mypoioverlay(demo12poisearch poisearchdemo, baidumap baidumap) :
base(baidumap)
{
this.poisearchdemo = poisearchdemo;
}
public override bool onpoiclick(int index)
{
base.onpoiclick(index);
poiinfo poi = getpoiresult().allpoi[index];
if (poi.hascaterdetails)
{
poisearchdemo.mpoisearch.searchpoidetail(
new poidetailsearchoption().poiuid(poi.uid));
}
return true;
}
}
}
}