Android 百度地图开发 POI搜索

新手开始学Android 开发和 Java 语言，主要是看百度地图提供的Demo，根据应用的需要做了一些改进。

这里主要实现了用户可以自定义 POI 搜索的城市、地点、兴趣点和搜索半径。

全部代码如下：

package baidumapsdk.demo;import android.app.Activity;import android.os.Bundle;import android.os.SystemClock;import android.text.Editable;import android.text.TextWatcher;import android.util.Log;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;import com.baidu.platform.comapi.basestruct.GeoPoint;/** * 演示poi搜索功能  */public class PoiSearchDemo 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;long starttime[];    @Override    public void onCreate(Bundle savedInstanceState) {        starttime[0] = SystemClock.uptimeMillis();    Log.d(null, Double.toString(starttime[0]));     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);        mMapView.setBuiltInZoomControls(true);                 // 设置启用内置的缩放控件  // 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            @Override            public void onGetPoiDetailSearchResult(int type, int error) {                if (error != 0) {                    Toast.makeText(PoiSearchDemo.this, "抱歉，未找到结果", Toast.LENGTH_SHORT).show();                }                else {                    Toast.makeText(PoiSearchDemo.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) {                        starttime[1] = SystemClock.uptimeMillis();                            // 错误号可参考MKEvent中的定义                if (error != 0 || res == null) {                    Toast.makeText(PoiSearchDemo.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(PoiSearchDemo.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(PoiSearchDemo.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) {                        starttime [2] =SystemClock.uptimeMillis();                        if (error != 0) {String str = String.format("错误号：%d", error);Toast.makeText(PoiSearchDemo.this, str, Toast.LENGTH_LONG).show();return;}//地图移动到该点mMapView.getController().animateTo(res.geoPt);if (res.type == MKAddrInfo.MK_GEOCODE){//地理编码：通过地址检索坐标点GeoPoint position = new GeoPoint (res.geoPt.getLatitudeE6(),res.geoPt.getLongitudeE6());// mSearch.poiSearchNearBy("KFC", position, 5000);//可用EditText editSearchKey = (EditText)findViewById(R.id.searchkey);EditText editSearchDistance = (EditText)findViewById(R.id.distance);int dis =Integer.parseInt(editSearchDistance.getText().toString()); mSearch.poiSearchNearBy(editSearchKey.getText().toString(), position, dis);////String strInfo = String.format("纬度：%f 经度：%f", res.geoPt.getLatitudeE6()/1e6, res.geoPt.getLongitudeE6()/1e6);//Toast.makeText(PoiSearchDemo.this, strInfo, Toast.LENGTH_LONG).show(); //这里注释了//mSearch.poiSearchNearBy("餐厅",new GeoPoint(res.geoPt.getLatitudeE6(), res.geoPt.getLongitudeE6()) , 5000);////MyPoiOverlay poiOverlay = new MyPoiOverlay(GeoCoderDemo.this, mMapView, mSearch);}            }                        public void onGetBusDetailResult(MKBusLineResult result, int iError) {            }            /**             * 更新建议列表             */            @Override            public 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) {// TODO Auto-generated method stub}        });                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);}        });            }        @Override    protected void onPause() {        mMapView.onPause();        super.onPause();    }        @Override    protected void onResume() {        mMapView.onResume();        super.onResume();    }        @Override    protected void onDestroy(){    mMapView.destroy();    mSearch.destory();    super.onDestroy();        starttime [4] = SystemClock.uptimeMillis();        }        @Override    protected void onSaveInstanceState(Bundle outState) {    super.onSaveInstanceState(outState);    mMapView.onSaveInstanceState(outState);        }        @Override    protected void onRestoreInstanceState(Bundle savedInstanceState) {    super.onRestoreInstanceState(savedInstanceState);    mMapView.onRestoreInstanceState(savedInstanceState);    }        private void initMapView() {        mMapView.setLongClickable(true);        mMapView.getController().setZoom(14);        mMapView.getController().enableClick(true);        mMapView.setBuiltInZoomControls(true);    }    /**     * 影响搜索按钮点击事件     * @param v     */    public void searchButtonProcess(View v) {        starttime [3] =SystemClock.uptimeMillis();              EditText editCity = (EditText)findViewById(R.id.city);                    //从这里开始添加的         // EditText editGeoCodeKey = (EditText)findViewById(R.id.geocodekey);         // mBtnGeoCode.setOnClickListener(clickListener); //                    EditText editSearchKey = (EditText)findViewById(R.id.searchkey);          EditText editGeoCodeKey = (EditText)findViewById(R.id.geocodekey);          mSearch.geocode(editGeoCodeKey.getText().toString(), editCity.getText().toString());         // mSearch.poiSearchNearBy("KFC", new GeoPoint((int) (39.920 * 1E6), (int) (116.410 * 1E6)), 5000);//         // mSearch.poiSearchNearBy("KFC", position, 5000);//          //mSearch.poiSearchInCity(editCity.getText().toString(),                  // editSearchKey.getText().toString());    }   public void goToNextPage(View v) {        //搜索下一组poi        int flag = mSearch.goToPoiPage(++load_Index);        if (flag != 0) {            Toast.makeText(PoiSearchDemo.this, "先搜索开始，然后再搜索下一组数据", Toast.LENGTH_SHORT).show();       // Log.        }    }}

XML 配置文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    >    <LinearLayout                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" />        <EditTextandroid:id="@+id/geocodekey"    android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="微软大厦" />          <EditTextandroid:id="@+id/distance"    android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="1000" />                <TextView            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="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              android:layout_width="fill_parent"        android:layout_height="50dip"        android:orientation="horizontal" >        <Button            android:id="@+id/search"            android:layout_height="wrap_content"             android:layout_width="fill_parent"            android:layout_weight="12"            android:padding="10dip"            android:background="@drawable/button_style"            android:onClick="searchButtonProcess"            android:text="开始" />       <!--  <Button            android:id="@+id/map_next_data"             android:layout_width="fill_parent"            android:layout_weight="12"            android:layout_height="wrap_content"            android:padding="10dip"            android:background="@drawable/button_style"            android:onClick="goToNextPage"            android:text="下一组数据" /> -->    </LinearLayout> <com.baidu.mapapi.map.MapView android:id="@+id/bmapView"    android:layout_width="fill_parent" android:layout_height="fill_parent"     android:clickable="true"     /></LinearLayout>