通过百度地图，根据地名获取经纬度，内有详解

package baidumapsdk.demo; import android.app.Activity; import android.os.Bundle; import android.widget.Toast; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.BitmapDescriptorFactory; import com.baidu.mapapi.map.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MarkerOptions; import com.baidu.mapapi.model.LatLng; import com.baidu.mapapi.search.core.SearchResult; import com.baidu.mapapi.search.geocode.GeoCodeOption; import com.baidu.mapapi.search.geocode.GeoCodeResult; import com.baidu.mapapi.search.geocode.GeoCoder; import com.baidu.mapapi.search.geocode.OnGetGeoCoderResultListener; import com.baidu.mapapi.search.geocode.ReverseGeoCodeResult; import com.zm.mobile.R; /** * 此demo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） */ public class MapActivity extends Activity implements OnGetGeoCoderResultListener { GeoCoder mSearch = null; // 搜索模块，也可去掉地图模块独立使用 BaiduMap mBaiduMap = null; MapView mMapView = null; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_geocoder); // 地图初始化 mMapView = (MapView) findViewById(R.id.bmapView); mBaiduMap = mMapView.getMap(); // 初始化搜索模块，注册事件监听 mSearch = GeoCoder.newInstance(); mSearch.setOnGetGeoCodeResultListener(this); //根据地理位置定位，先城市，后地点名 mSearch.geocode(new GeoCodeOption().city("上海").address("世纪公园")); } @Override protected void onPause() { mMapView.onPause(); super.onPause(); } @Override protected void onResume() { mMapView.onResume(); super.onResume(); } @Override protected void onDestroy() { mMapView.onDestroy(); mSearch.destroy(); super.onDestroy(); } @Override public void onGetGeoCodeResult(GeoCodeResult result) { if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) { Toast.makeText(MapActivity.this, "抱歉，未能找到结果", Toast.LENGTH_LONG) .show(); return; } mBaiduMap.clear(); mBaiduMap.addOverlay(new MarkerOptions().position(result.getLocation()) .icon(BitmapDescriptorFactory .fromResource(R.drawable.icon_marka))); mBaiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(result .getLocation())); String strInfo = String.format("纬度：%f 经度：%f", result.getLocation().latitude, result.getLocation().longitude); Toast.makeText(MapActivity.this, strInfo, Toast.LENGTH_LONG).show(); //根据经纬度定位，并或者缩小，参数可调 LatLng ll = new LatLng(result.getLocation().latitude, result.getLocation().longitude); MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll); mBaiduMap.setMapStatus(MapStatusUpdateFactory.zoomTo((float) 15.5)); mBaiduMap.animateMapStatus(u); } @Override public void onGetReverseGeoCodeResult(ReverseGeoCodeResult result) { } }