百度地图定位核心代码

package com.example.health.fragment;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.location.Poi;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MarkerOptions;
import com.baidu.mapapi.map.MyLocationConfiguration;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.model.LatLng;
import com.example.health.CompassActivity;
import com.example.health.LoginActivity;

import com.example.health.R;
import com.example.health.SafeActivity;
import com.example.health.StepActivity;
import com.example.health.WeightActivity;
import com.example.health.adapter.MyAdapter;
import com.example.health.bean.Function;
import com.example.health.db.Config;

import java.util.ArrayList;
import java.util.List;

import butterknife.BindView;
import butterknife.ButterKnife;

/**
 * Created by chenwanzhou  on 2017/6/11
 */

public class LocationFragment extends Fragment {


    @BindView(R.id.lv)
    ListView lv;
    @BindView(R.id.tv_nothing)
    TextView tvNothing;
    List<Function> mDatas;
    MyAdapter myAdapter;

    MapView mMapView = null;
    BaiduMap mBaiduMap = null;
    public LocationClient mLocationClient = null;
    public BDLocationListener myListener = new MyLocationListener();

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_location, container, false);
        //获取地图控件引用
        mMapView = (MapView) view.findViewById(R.id.bmapView);
        mBaiduMap = mMapView.getMap();
//        //定义Maker坐标点
//        LatLng point = new LatLng(39.963175, 116.400244);
//        //构建Marker图标
//        BitmapDescriptor bitmap = BitmapDescriptorFactory
//                .fromResource(R.mipmap.location);
//        //构建MarkerOption，用于在地图上添加Marker
//        OverlayOptions option = new MarkerOptions()
//                .position(point)
//                .icon(bitmap);
//        //在地图上添加Marker，并显示
//        mBaiduMap.addOverlay(option);
        //声明LocationClient类
        mLocationClient = new LocationClient(getActivity().getApplicationContext());
        //注册监听函数
        mLocationClient.registerLocationListener( myListener );
        initLocation();
        //开始定位
        mLocationClient.start();
        ButterKnife.bind(this, view);
        return view;
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        //在activity执行onDestroy时执行mMapView.onDestroy()，实现地图生命周期管理
        mMapView.onDestroy();
    }
    @Override
    public void onResume() {
        super.onResume();
        //在activity执行onResume时执行mMapView. onResume ()，实现地图生命周期管理
        mMapView.onResume();
    }
    @Override
    public void onPause() {
        super.onPause();
        //在activity执行onPause时执行mMapView. onPause ()，实现地图生命周期管理
        mMapView.onPause();
    }

    private void initLocation(){
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);
        //可选，默认高精度，设置定位模式，高精度，低功耗，仅设备

        option.setCoorType("bd09ll");
        //可选，默认gcj02，设置返回的定位结果坐标系

        int span=2000;
        option.setScanSpan(span);
        //可选，默认0，即仅定位一次，设置发起定位请求的间隔需要大于等于1000ms才是有效的

        option.setIsNeedAddress(true);
        //可选，设置是否需要地址信息，默认不需要

        option.setOpenGps(true);
        //可选，默认false,设置是否使用gps

        option.setLocationNotify(true);
        //可选，默认false，设置是否当GPS有效时按照1S/1次频率输出GPS结果

        option.setIsNeedLocationDescribe(true);
        //可选，默认false，设置是否需要位置语义化结果，可以在BDLocation.getLocationDescribe里得到，结果类似于“在北京*附近”

        option.setIsNeedLocationPoiList(true);
        //可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到

        option.setIgnoreKillProcess(false);
        //可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死

        option.SetIgnoreCacheException(false);
        //可选，默认false，设置是否收集CRASH信息，默认收集

        option.setEnableSimulateGps(false);
        //可选，默认false，设置是否需要过滤GPS仿真结果，默认需要

        mLocationClient.setLocOption(option);
    }

    public class MyLocationListener implements BDLocationListener {

        @Override
        public void onReceiveLocation(BDLocation location) {
            //获取定位结果
            StringBuffer sb = new StringBuffer(256);

            sb.append("time : ");
            sb.append(location.getTime());    //获取定位时间

            sb.append("\nerror code : ");
            sb.append(location.getLocType());    //获取类型类型

            sb.append("\nlatitude : ");
            sb.append(location.getLatitude());    //获取纬度信息

            sb.append("\nlontitude : ");
            sb.append(location.getLongitude());    //获取经度信息

            sb.append("\nradius : ");
            sb.append(location.getRadius());    //获取定位精准度

            if (location.getLocType() == BDLocation.TypeGpsLocation){

                // GPS定位结果
                sb.append("\nspeed : ");
                sb.append(location.getSpeed());    // 单位：公里每小时

                sb.append("\nsatellite : ");
                sb.append(location.getSatelliteNumber());    //获取卫星数

                sb.append("\nheight : ");
                sb.append(location.getAltitude());    //获取海拔高度信息，单位米

                sb.append("\ndirection : ");
                sb.append(location.getDirection());    //获取方向信息，单位度

                sb.append("\naddr : ");
                sb.append(location.getAddrStr());    //获取地址信息

                sb.append("\ndescribe : ");
                sb.append("gps定位成功");

            } else if (location.getLocType() == BDLocation.TypeNetWorkLocation){

                // 网络定位结果
                sb.append("\naddr : ");
                sb.append(location.getAddrStr());    //获取地址信息

                sb.append("\noperationers : ");
                sb.append(location.getOperators());    //获取运营商信息

                sb.append("\ndescribe : ");
                sb.append("网络定位成功");

            } else if (location.getLocType() == BDLocation.TypeOffLineLocation) {

                // 离线定位结果
                sb.append("\ndescribe : ");
                sb.append("离线定位成功，离线定位结果也是有效的");

            } else if (location.getLocType() == BDLocation.TypeServerError) {

                sb.append("\ndescribe : ");
                sb.append("服务端网络定位失败，可以反馈IMEI号和大体定位时间到[email protected]，会有人追查原因");

            } else if (location.getLocType() == BDLocation.TypeNetWorkException) {

                sb.append("\ndescribe : ");
                sb.append("网络不同导致定位失败，请检查网络是否通畅");

            } else if (location.getLocType() == BDLocation.TypeCriteriaException) {

                sb.append("\ndescribe : ");
                sb.append("无法获取有效定位依据导致定位失败，一般是由于手机的原因，处于飞行模式下一般会造成这种结果，可以试着重启手机");

            }

            sb.append("\nlocationdescribe : ");
            sb.append(location.getLocationDescribe());    //位置语义化信息

            List<Poi> list = location.getPoiList();    // POI数据
            if (list != null) {
                sb.append("\npoilist size = : ");
                sb.append(list.size());
                for (Poi p : list) {
                    sb.append("\npoi= : ");
                    sb.append(p.getId() + " " + p.getName() + " " + p.getRank());
                }
            }

            Log.i("BaiduLocationApiDem", sb.toString());
            // 开启定位图层
            mBaiduMap.setMyLocationEnabled(true);
            // 构造定位数据
            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();
            // 设置定位数据
            mBaiduMap.setMyLocationData(locData);
            // 设置定位图层的配置（定位模式，是否允许方向信息，用户自定义定位图标）
            BitmapDescriptor mCurrentMarker = BitmapDescriptorFactory.fromResource(R.mipmap.location);
            MyLocationConfiguration.LocationMode mCurrentMode = MyLocationConfiguration.LocationMode.FOLLOWING;
            MyLocationConfiguration config = new MyLocationConfiguration(mCurrentMode, false, mCurrentMarker);
            mBaiduMap.setMyLocationConfigeration(config);
            //当不需要定位图层时关闭定位图层
            //mBaiduMap.setMyLocationEnabled(false);
        }

        @Override
        public void onConnectHotSpotMessage(String s, int i) {
            Toast.makeText(getContext(),s,Toast.LENGTH_LONG).show();
        }
    }
}