android 定位到输入的地址

import com.baidu.location.LocationClientOption;

import com.baidu.mapapi.map.BaiduMap;

import com.baidu.mapapi.map.BitmapDescriptor;

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.map.MyLocationData;

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;

public class MainActivity extends Activity implements

OnGetGeoCoderResultListener {

GeoCoder mSearch = null; // 搜索模块，也可去掉地图模块独立使用

// 定位相关

LocationClient mLocClien

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public MyLocationListenner myListener = new MyLocationListenner();

BitmapDescriptor mCurrentMarker;

MapView mMapView;

BaiduMap mBaiduMap;

// UI 相关

OnCheckedChangeListener radioButtonListener;

Button requestLocButton;

boolean isFirstLoc = true;// 是否首次定位

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

// 地图初始化

mMapView = (MapView) findViewById(R.id.bmapView);

mBaiduMap = mMapView.getMap();

// 开启定位图层

mBaiduMap.setMyLocationEnabled(true);

// 定位初始化

mLocClient = new LocationClient(this);

mLocClient.registerLocationListener(myListener);

LocationClientOption option = new LocationClientOption();

option.setOpenGps(true);// 打开 gps

option.setCoorType("bd09ll"); // 设置坐标类型

option.setScanSpan(1000);

mLocClient.setLocOption(option);

mLocClient.start();

// 初始化搜索模块，注册事件监听

mSearch = GeoCoder.newInstance();

mSearch.setOnGetGeoCodeResultListener(this);

Button btn_search = (Button) findViewById(R.id.btn_search);

btn_search.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

SearchButtonProcess();

}

});

}

/**

• 发起地址搜索

• @param v

*/

public void SearchButtonProcess() {

EditText editCity = (EditText) findViewById(R.id.et_city);

EditText editGeoCodeKey = (EditText) findViewById(R.id.et_addr);

// Geo 搜索

mSearch.geocode(new GeoCodeOption().city(

editCity.getText().toString()).address(

editGeoCodeKey.getText().toString()));

}

@Override

public boolean onCreateOptionsMenu(Menu menu) {

// Inflate the menu; this adds items to the action bar if it is present.

getMenuInflater().inflate(R.menu.main, menu);

return true;

}

/**

• 定位 SDK 监听函数

*/

public class MyLocationListenner implements BDLocationListener {

@Override

public void onReceiveLocation(BDLocation location) {

// map view 销毁后不在处理新接收的位置

if (location == null || mMapView == null)

return;

MyLocationData locData = new MyLocationData.Builder()

.accuracy(location.getRadius())

// 此处设置开发者获取到的方向信息，顺时针 0-360

.direction(100).latitude(location.getLatitude())

.longitude(location.getLongitude()).build();

mBaiduMap.setMyLocationData(locData);

if (isFirstLoc) {

isFirstLoc = false;

LatLng ll = new LatLng(location.getLatitude(),

location.getLongitude());

MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll);

mBaiduMap.animateMapStatus(u);

}

}

public void onReceivePoi(BDLocation poiLocation) {

}

}

@Override

protected void onPause() {

mMapView.onPause();

super.onPause();

}

@Override

protected void onResume() {

mMapView.onResume();

super.onResume();

}

@Override

protected void onDestroy() {

// 退出时销毁定位

mLocClient.stop();

mSearch.destroy();

// 关闭定位图层

mBaiduMap.setMyLocationEnabled(false);

mMapView.onDestroy();

mMapView = null;

super.onDestroy();

}

/**

• 地址搜索返回结果

*/

@Override

public void onGetGeoCodeResult(GeoCodeResult result) {

if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {

Toast.makeText(MainActivity.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);