百度地图之地址信息和坐标的转换(一)

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,  
                            Toa