android 百度地图api 地理编码&反地理编码

本以为很麻烦的，结果就是百度已经提供了：地理编码&反地理编码的接口。

mSearch.geocode(new GeoCodeOption().city(
					editCity.getText().toString()).address(
					editGeoCodeKey.getText().toString()));

mSearch.reverseGeoCode(new ReverseGeoCodeOption()
					.location(ptCenter));

之后只需要重写onGetGeoCodeResult(GeoCodeResult result)和onGetReverseGeoCodeResult(ReverseGeoCodeResult result)就可以对正反编码进行自定义处理

完整代码：

package baidumapsdk.demo;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
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.ReverseGeoCodeOption;
import com.baidu.mapapi.search.geocode.ReverseGeoCodeResult;

/**
 * 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 GeoCoderDemo 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);
		CharSequence titleLable = "地理编码功能";
		setTitle(titleLable);

		// 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);
	}

	/**
	 * 发起搜索
	 * 
	 * @param v
	 */
	public void SearchButtonProcess(View v) {
		if (v.getId() == R.id.reversegeocode) {
			EditText lat = (EditText) findViewById(R.id.lat);
			EditText lon = (EditText) findViewById(R.id.lon);
			LatLng ptCenter = new LatLng((Float.valueOf(lat.getText()
					.toString())), (Float.valueOf(lon.getText().toString())));
			// 反Geo搜索
			mSearch.reverseGeoCode(new ReverseGeoCodeOption()
					.location(ptCenter));
			//@param：LatLng
		} else if (v.getId() == R.id.geocode) {
			EditText editCity = (EditText) findViewById(R.id.city);
			EditText editGeoCodeKey = (EditText) findViewById(R.id.geocodekey);
			// Geo搜索
			mSearch.geocode(new GeoCodeOption().city(
					editCity.getText().toString()).address(
					editGeoCodeKey.getText().toString()));
			//@param：城市+地址
		}
	}

	@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(GeoCoderDemo.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)));
		//加上覆盖物
		mBaiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(result
				.getLocation()));
		//定位
		String strInfo = String.format("纬度：%f 经度：%f",
				result.getLocation().latitude, result.getLocation().longitude);
		Toast.makeText(GeoCoderDemo.this, strInfo, Toast.LENGTH_LONG).show();
		//result保存地理编码的结果 城市-->坐标
	}

	@Override
	public void onGetReverseGeoCodeResult(ReverseGeoCodeResult result) {
		if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
			Toast.makeText(GeoCoderDemo.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)));
		//加上覆盖物
		mBaiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(result
				.getLocation()));
		//定位
		Toast.makeText(GeoCoderDemo.this, result.getAddress(),
				Toast.LENGTH_LONG).show();
		//result保存翻地理编码的结果 坐标-->城市
	}

}