Android百度地图之地址信息和坐标的转换

jopen 11年前

在实际运用中,经常需要进行地理编码和地理反编码,即将地址信息转换成坐标和将坐标转换成地址信息,此demo就是用来展示如何进行地理编码搜索(用地址检索坐标)、反地理编码搜索(用坐标检索地址)以及展示如何使用ItemizedOverlay在地图上标注结果点,代码原型来自百度Demo,代码如下:

Activity:

package com.home;    import android.app.Activity;  import android.graphics.drawable.Drawable;  import android.os.Bundle;  import android.view.View;  import android.view.View.OnClickListener;  import android.widget.Button;  import android.widget.EditText;  import android.widget.Toast;    import com.baidu.mapapi.map.ItemizedOverlay;  import com.baidu.mapapi.map.MapView;  import com.baidu.mapapi.map.OverlayItem;  import com.baidu.mapapi.search.MKAddrInfo;  import com.baidu.mapapi.search.MKBusLineResult;  import com.baidu.mapapi.search.MKDrivingRouteResult;  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.MKSuggestionResult;  import com.baidu.mapapi.search.MKTransitRouteResult;  import com.baidu.mapapi.search.MKWalkingRouteResult;  import com.baidu.platform.comapi.basestruct.GeoPoint;    public class GeoCoderActivity extends Activity implements OnClickListener {   // UI相关   private Button mBtnReverseGeoCode = null; // 将坐标反编码为地址   private Button mBtnGeoCode = null; // 将地址编码为坐标   private EditText lat = null;   private EditText lon = null;   private EditText editCity = null;   private EditText editGeoCodeKey = null;   // 地图相关   private MapView mMapView = null; // 地图View   // 搜索相关   private MKSearch mSearch = null; // 搜索模块,也可去掉地图模块独立使用     protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    DemoApplication app = (DemoApplication) this.getApplication();    setContentView(R.layout.geocoder);    CharSequence titleLable = "地理编码功能";    setTitle(titleLable);      // 地图初始化    mMapView = (MapView) findViewById(R.id.geocoder_bmapView);    mMapView.getController().enableClick(true);    mMapView.getController().setZoom(12);      // UI初始化    lat = (EditText) findViewById(R.id.geocoder_et_lat);    lon = (EditText) findViewById(R.id.geocoder_et_lon);    editCity = (EditText) findViewById(R.id.geocoder_et_city);    editGeoCodeKey = (EditText) findViewById(R.id.geocoder_et_geocodekey);    mBtnReverseGeoCode = (Button) findViewById(R.id.geocoder_btn_reversegeocode);    mBtnGeoCode = (Button) findViewById(R.id.geocoder_btn_geocode);    mBtnReverseGeoCode.setOnClickListener(this);    mBtnGeoCode.setOnClickListener(this);      // 初始化搜索模块,注册事件监听    mSearch = new MKSearch();    mSearch.init(app.mBMapManager, new MKSearchListener() {     @Override     public void onGetPoiDetailSearchResult(int type, int error) {     }       public void onGetAddrResult(MKAddrInfo res, int error) {      if (error != 0) {       String str = String.format("错误号:%d", error);       Toast.makeText(GeoCoderActivity.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       String strInfo = String.format("纬度:%f 经度:%f",         res.geoPt.getLatitudeE6() / 1e6,         res.geoPt.getLongitudeE6() / 1e6);       Toast.makeText(GeoCoderActivity.this, strInfo,         Toast.LENGTH_LONG).show();      }      if (res.type == MKAddrInfo.MK_REVERSEGEOCODE) {       // 反地理编码:通过坐标点检索详细地址及周边poi       String strInfo = res.strAddr;       Toast.makeText(GeoCoderActivity.this, strInfo,         Toast.LENGTH_LONG).show();        }      // 生成ItemizedOverlay图层用来标注结果点      ItemizedOverlay<OverlayItem> itemOverlay = new ItemizedOverlay<OverlayItem>(        null, mMapView);      // 生成Item      OverlayItem item = new OverlayItem(res.geoPt, "", null);      // 得到需要标在地图上的资源      Drawable marker = getResources().getDrawable(        R.drawable.icon_markf);      // 为maker定义位置和边界      marker.setBounds(0, 0, marker.getIntrinsicWidth(),        marker.getIntrinsicHeight());      // 给item设置marker      item.setMarker(marker);      // 在图层上添加item      itemOverlay.addItem(item);        // 清除地图其他图层      mMapView.getOverlays().clear();      // 添加一个标注ItemizedOverlay图层      mMapView.getOverlays().add(itemOverlay);      // 执行刷新使生效      mMapView.refresh();     }       public void onGetPoiResult(MKPoiResult res, int type, int error) {       }       public void onGetDrivingRouteResult(MKDrivingRouteResult res,       int error) {     }       public void onGetTransitRouteResult(MKTransitRouteResult res,       int error) {     }       public void onGetWalkingRouteResult(MKWalkingRouteResult res,       int error) {     }       public void onGetBusDetailResult(MKBusLineResult result, int iError) {     }       @Override     public void onGetSuggestionResult(MKSuggestionResult res, int arg1) {     }       @Override     public void onGetShareUrlResult(MKShareUrlResult result, int type,       int error) {     }      });     }     @Override   public void onClick(View v) {    if (v == mBtnGeoCode) {     // Geo搜索     mSearch.geocode(editGeoCodeKey.getText().toString(), editCity       .getText().toString());    }    if (v == mBtnReverseGeoCode) {     GeoPoint ptCenter = new GeoPoint((int) (Float.valueOf(lat.getText()       .toString()) * 1e6), (int) (Float.valueOf(lon.getText()       .toString()) * 1e6));     // 反Geo搜索     mSearch.reverseGeocode(ptCenter);    }   }     @Override   protected void onPause() {    mMapView.onPause();    super.onPause();   }     @Override   protected void onResume() {    mMapView.onResume();    super.onResume();   }     @Override   protected void onDestroy() {    mMapView.destroy();    super.onDestroy();   }     @Override   protected void onSaveInstanceState(Bundle outState) {    super.onSaveInstanceState(outState);    mMapView.onSaveInstanceState(outState);     }     @Override   protected void onRestoreInstanceState(Bundle savedInstanceState) {    super.onRestoreInstanceState(savedInstanceState);    mMapView.onRestoreInstanceState(savedInstanceState);   }  }


布局XML:

<?xml version="1.0" encoding="utf-8"?>  <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"      android:layout_width="match_parent"      android:layout_height="match_parent"      android:orientation="vertical" >        <LinearLayout          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:orientation="horizontal" >            <EditText              android:id="@+id/geocoder_et_city"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:text="北京" />            <EditText              android:id="@+id/geocoder_et_geocodekey"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:text="海淀区上地十街10号" />            <Button              android:id="@+id/geocoder_btn_geocode"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:background="@drawable/button_style"              android:text="Geo" />      </LinearLayout>        <LinearLayout          android:layout_width="match_parent"          android:layout_height="wrap_content"          android:orientation="horizontal" >            <EditText              android:id="@+id/geocoder_et_lat"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:text="39.904965" />            <EditText              android:id="@+id/geocoder_et_lon"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:text="116.327764" />            <Button              android:id="@+id/geocoder_btn_reversegeocode"              android:layout_width="wrap_content"              android:layout_height="wrap_content"              android:background="@drawable/button_style"              android:text="ReverseGeo" />      </LinearLayout>        <com.baidu.mapapi.map.MapView          android:id="@+id/geocoder_bmapView"          android:layout_width="match_parent"          android:layout_height="match_parent"          android:clickable="true" />    </LinearLayout>


配置文件同之前地图示例

附上图片效果:

d7.jpeg

来自:http://blog.csdn.net/u010142437/article/details/11563589