我想大家可能都有过这样的经历：兜里揣着一张银行卡，在街上到处找自动取款机（atm）。在这个场景中，atm就是的兴趣点，我们想做的事情就是找到离自己较近的一些atm然后取款，此时我们并不关心附近有哪些超市、酒吧，因为这些地方没办法取钱！
说了这么多，一方面是加深大家对poi这个词的认识，另一方面也是为了让大家明白我们接下来要做的事情。理论性的东西就不再多讲了，直接来看例子。
先给大家展示下效果图：
详细界面：
该示例主要介绍关键词查询、suggestion查询和查看餐饮类place详情页功能，尤其搜索某个地方的餐厅、理发店等等比较有实际意义，百度demo代码如下：
activity：
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package com.home;import android.app.activity;import android.os.bundle;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.bmapmanager;import com.baidu.mapapi.map.mapview;import com.baidu.mapapi.search.mkaddrinfo;import com.baidu.mapapi.search.mkbuslineresult;import com.baidu.mapapi.search.mkdrivingrouteresult;import com.baidu.mapapi.search.mkpoiinfo;import com.baidu.mapapi.search.mkpoiresult;import com.baidu.mapapi.search.mksearch;import com.baidu.mapapi.search.mksearchlistener;import com.baidu.mapapi.search.mkshareurlresult;import com.baidu.mapapi.search.mksuggestioninfo;import com.baidu.mapapi.search.mksuggestionresult;import com.baidu.mapapi.search.mktransitrouteresult;import com.baidu.mapapi.search.mkwalkingrouteresult;/*** 演示poi搜索功能*/public class poisearchactivity extends activity {private mapview mmapview = null;private mksearch msearch = null; // 搜索模块，也可去掉地图模块独立使用/*** 搜索关键字输入窗口*/private autocompletetextview keyworldsview = null;private arrayadapter<string> sugadapter = null;private int load_index;@overridepublic void oncreate(bundle savedinstancestate) {super.oncreate(savedinstancestate);demoapplication app = (demoapplication) this.getapplication();if (app.mbmapmanager == null) {app.mbmapmanager = new bmapmanager(this);app.mbmapmanager.init(demoapplication.strkey,new demoapplication.mygenerallistener());}setcontentview(r.layout.activity_poisearch);mmapview = (mapview) findviewbyid(r.id.bmapview);mmapview.getcontroller().enableclick(true);mmapview.getcontroller().setzoom(12);// 初始化搜索模块，注册搜索事件监听msearch = new mksearch();msearch.init(app.mbmapmanager, new mksearchlistener() {// 在此处理详情页结果@overridepublic void ongetpoidetailsearchresult(int type, int error) {if (error != 0) {toast.maketext(poisearchactivity.this, "抱歉，未找到结果",toast.length_short).show();} else {toast.maketext(poisearchactivity.this, "成功，查看详情页面",toast.length_short).show();}}/*** 在此处理poi搜索结果*/public void ongetpoiresult(mkpoiresult res, int type, int error) {// 错误号可参考mkevent中的定义if (error != 0 || res == null) {toast.maketext(poisearchactivity.this, "抱歉，未找到结果",toast.length_long).show();return;}// 将地图移动到第一个poi中心点if (res.getcurrentnumpois() > 0) {// 将poi结果显示到地图上mypoioverlay poioverlay = new mypoioverlay(poisearchactivity.this, mmapview, msearch);poioverlay.setdata(res.getallpoi());mmapview.getoverlays().clear();mmapview.getoverlays().add(poioverlay);mmapview.refresh();// 当epoitype为2（公交线路）或4（地铁线路）时， poi坐标为空for (mkpoiinfo info : res.getallpoi()) {if (info.pt != null) {mmapview.getcontroller().animateto(info.pt);break;}}} else if (res.getcitylistnum() > 0) {// 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 (int i = 0; i < res.getcitylistnum(); i++) {strinfo += res.getcitylistinfo(i).city;strinfo += ",";}strinfo += "找到结果";toast.maketext(poisearchactivity.this, strinfo,toast.length_long).show();}}public void ongetdrivingrouteresult(mkdrivingrouteresult res,int error) {}public void ongettransitrouteresult(mktransitrouteresult res,int error) {}public void ongetwalkingrouteresult(mkwalkingrouteresult res,int error) {}public void ongetaddrresult(mkaddrinfo res, int error) {}public void ongetbusdetailresult(mkbuslineresult result, int ierror) {}/*** 更新建议列表*/@overridepublic void ongetsuggestionresult(mksuggestionresult res, int arg1) {if (res == null || res.getallsuggestions() == null) {return;}sugadapter.clear();for (mksuggestioninfo info : res.getallsuggestions()) {if (info.key != null)sugadapter.add(info.key);}sugadapter.notifydatasetchanged();}@overridepublic void ongetshareurlresult(mkshareurlresult result, int type,int error) {}});keyworldsview = (autocompletetextview) findviewbyid(r.id.searchkey);sugadapter = new arrayadapter<string>(this,android.r.layout.simple_dropdown_item_1line);keyworldsview.setadapter(sugadapter);/*** 当输入关键字变化时，动态更新建议列表*/keyworldsview.addtextchangedlistener(new textwatcher() {@overridepublic void aftertextchanged(editable arg0) {}@overridepublic void beforetextchanged(charsequence arg0, int arg1,int arg2, int arg3) {}@overridepublic void ontextchanged(charsequence cs, int arg1, int arg2,int arg3) {if (cs.length() <= 0) {return;}string city = ((edittext) findviewbyid(r.id.city)).gettext().tostring();/*** 使用建议搜索服务获取建议列表，结果在onsuggestionresult()中更新*/msearch.suggestionsearch(cs.tostring(), city);}});}@overrideprotected void onpause() {mmapview.onpause();super.onpause();}@overrideprotected void onresume() {mmapview.onresume();super.onresume();}@overrideprotected void ondestroy() {mmapview.destroy();super.ondestroy();}@overrideprotected void onsaveinstancestate(bundle outstate) {super.onsaveinstancestate(outstate);mmapview.onsaveinstancestate(outstate);}@overrideprotected void onrestoreinstancestate(bundle savedinstancestate) {super.onrestoreinstancestate(savedinstancestate);mmapview.onrestoreinstancestate(savedinstancestate);}/*** 影响搜索按钮点击事件** @param v*/public void searchbuttonprocess(view v) {edittext editcity = (edittext) findviewbyid(r.id.city);edittext editsearchkey = (edittext) findviewbyid(r.id.searchkey);msearch.poisearchincity(editcity.gettext().tostring(), editsearchkey.gettext().tostring());}public void gotonextpage(view v) {// 搜索下一组poiint flag = msearch.gotopoipage(++load_index);if (flag != 0) {toast.maketext(poisearchactivity.this, "先搜索开始，然后再搜索下一组数据",toast.length_short).show();}}} |
布局xml（activity_poisearch）：
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<?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" ><linearlayoutandroid:layout_width="fill_parent"android:layout_height="50dip"android:orientation="horizontal" ><textviewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="在" ></textview><edittextandroid:id="@+id/city"android:layout_width="wrap_content"android:layout_height="match_parent"android:text="北京" /><textviewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="市内找" ></textview><autocompletetextviewandroid:id="@+id/searchkey"android:layout_width="wrap_content"android:layout_height="wrap_content"android:layout_weight="0.88"android:text="餐厅" /></linearlayout><linearlayoutandroid:layout_width="fill_parent"android:layout_height="50dip"android:orientation="horizontal" ><buttonandroid:id="@+id/search"android:layout_width="fill_parent"android:layout_height="wrap_content"android:layout_weight="12"android:background="@drawable/button_style"android:onclick="searchbuttonprocess"android:padding="10dip"android:text="开始" /><buttonandroid: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:onclick="gotonextpage"android:padding="10dip"android:text="下一组数据" /></linearlayout><com.baidu.mapapi.map.mapviewandroid:id="@+id/bmapview"android:layout_width="fill_parent"android:layout_height="fill_parent"android:clickable="true" /></linearlayout> |
mypoioverlay类
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package com.home;import android.app.activity;import com.baidu.mapapi.map.mapview;import com.baidu.mapapi.map.poioverlay;import com.baidu.mapapi.search.mkpoiinfo;import com.baidu.mapapi.search.mksearch;public class mypoioverlay extends poioverlay {mksearch msearch;public mypoioverlay(activity activity, mapview mapview, mksearch search) {super(activity, mapview);msearch = search;}@overrideprotected boolean ontap(int i) {super.ontap(i);mkpoiinfo info = getpoi(i);if (info.hascaterdetails) {msearch.poidetailsearch(info.uid);}return true;}} |
在配置文件中要比之前多配置一个activity，不然没法查看详细界面，这是百度sdk jar中提供的类：
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<activityandroid:name="com.baidu.mapapi.search.placecateractivity"android:configchanges="orientation|keyboardhidden"android:theme="@android:style/theme.notitlebar" ></activity> |
application类同之前。
