225.map7-定位

定位服务

LocationClient和BDLocationListener
首先需要打开定位图层BaiduMap.setMyLocationEnabled(true);
设置监听器LocationClient. registerLocationListener(BDLocationListener)
设置定位模式baiduMap. setLocationMode(LocationMode)
Hight_Accuracy，高精度定位模式：这种定位模式下，会同时使用网络定位和GPS定位，优先返回最高精度的定位结果；
Battery_Saving，低功耗定位模式：这种定位模式下，不会使用GPS，只会使用网络定位（Wi-Fi和基站定位）
Device_Sensors，仅用设备定位模式：这种定位模式下，不需要连接网络，只使用GPS进行定位，这种模式下不支持室内环境的定位
设置定位显示模式BaiduMap.setMyLocationConfigeration(MyLocationConfiguration)
定位数据获取：在BDLocationListener. onReceiveLocation(BDLocation result)方法中设置定位数据，
baiduMap.setMyLocationData(MyLocationData);

package com.ldw.zbqq;import android.os.Bundle;import android.view.KeyEvent;import com.baidu.location.BDLocation;import com.baidu.location.BDLocationListener;import com.baidu.location.LocationClient;import com.baidu.location.LocationClientOption;import com.baidu.location.LocationClientOption.LocationMode;import com.baidu.mapapi.map.BitmapDescriptor;import com.baidu.mapapi.map.BitmapDescriptorFactory;import com.baidu.mapapi.map.MyLocationConfiguration;import com.baidu.mapapi.map.MyLocationData;/* * 定位 */public class LocationDemo extends BaseActivity {public LocationClient mLocationClient;public BDLocationListener myListener;private BitmapDescriptor geo;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);lacate();}private void lacate() {mLocationClient = new LocationClient(getApplicationContext());myListener = new MyListener();//绑定mLocationClient.registerLocationListener(myListener);LocationClientOption option = new LocationClientOption();option.setLocationMode(LocationMode.Hight_Accuracy);// 设置定位模式option.setCoorType("bd09ll");// 返回的定位结果是百度经纬度,默认值gcj02option.setScanSpan(5000);// 设置发起定位请求的间隔时间为5000msoption.setIsNeedAddress(true);// 返回的定位结果包含地址信息option.setNeedDeviceDirect(true);// 返回的定位结果包含手机机头的方向mLocationClient.setLocOption(option);//geo是定位图标geo = BitmapDescriptorFactory.fromResource(R.drawable.icon_geo);MyLocationConfiguration configuration = new MyLocationConfiguration(MyLocationConfiguration.LocationMode.FOLLOWING, true, geo);//FOLLOWING是跟随模式，第二个是否允许方向信息，第三个是图片baiduMap.setMyLocationConfigeration(configuration);// 设置定位显示的模式baiduMap.setMyLocationEnabled(true);// 打开定位图层}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {switch (keyCode) {case KeyEvent.KEYCODE_1:// 正常baiduMap.setMyLocationConfigeration(new MyLocationConfiguration(MyLocationConfiguration.LocationMode.NORMAL, true, geo));// 设置定位显示的模式break;case KeyEvent.KEYCODE_2:// 罗盘baiduMap.setMyLocationConfigeration(new MyLocationConfiguration(MyLocationConfiguration.LocationMode.COMPASS, true, geo));// 设置定位显示的模式break;case KeyEvent.KEYCODE_3:// 跟随baiduMap.setMyLocationConfigeration(new MyLocationConfiguration(MyLocationConfiguration.LocationMode.FOLLOWING, true, geo));// 设置定位显示的模式break;default:break;}return super.onKeyDown(keyCode, event);}@Overrideprotected void onStart() {mLocationClient.start();super.onStart();}@Overrideprotected void onPause() {mLocationClient.stop();super.onPause();}class MyListener implements BDLocationListener {@Overridepublic void onReceiveLocation(BDLocation result) {if (result != null) {MyLocationData data = new MyLocationData.Builder().latitude(result.getLatitude()).longitude(result.getLongitude()).build();baiduMap.setMyLocationData(data);}}}}