Android中获取用户附近位置

最近项目中要获取用户附近位置，供用户选择，该功能分两步实现，第一，获取用户经纬度，第二利，用经纬度通过现有的地理位置接口获取附近位置，实现截图如下：

一、获取用户的经纬度

获取用户的经纬度，之前已经介绍过，通过simple-location-tracker实现，具体请看：http://blog.csdn.net/qq_29078329/article/details/56668205。

注意，要在程序启动时获取用户的经纬度，并保存在sharedPreference中，如下：

private void getLocation() {//允许GPS、WiFi、基站定位，设置超时时间5秒TrackerSettings trackerSettings = new TrackerSettings();trackerSettings.setUseGPS(true).setUseNetwork(true).setUsePassive(true).setTimeout(5000);if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {return;}LocationTracker locationTracker = new LocationTracker(this, trackerSettings) {@Overridepublic void onLocationFound(@NonNull Location location) {Log.i(TAG, "latitude:" + location.getLatitude() + "longitude" + location.getLongitude());SharedPrefUtil.getInstance(SplashActivity.this).putString(Constants.LOCATION_LATITUDE_SP_KEY, location.getLatitude() + "");SharedPrefUtil.getInstance(SplashActivity.this).putString(Constants.LOCATION_lONGITUDE_SP_KEY, location.getLongitude() + "");}@Overridepublic void onTimeout() {Log.i(TAG, "location time out");}};locationTracker.startListening();}

二、获取用户附近位置

从sharedPreference中取得经纬度，利用地理位置接口，获取附近位置数据：

//获取附近位置private void getAddresses() {String latitude = SharedPrefUtil.getInstance(this).getString(Constants.LOCATION_LATITUDE_SP_KEY);String longitude = SharedPrefUtil.getInstance(this).getString(Constants.LOCATION_lONGITUDE_SP_KEY);if (!TextUtils.isEmpty(latitude) && !TextUtils.isEmpty(longitude)) {mAddressesList = new ArrayList<>();HttpClient httpClient = new HttpClient();httpClient.setCallback(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {Log.i(TAG, "getLocation onFailure");}@Overridepublic void onResponse(Call call, Response response) throws IOException {String jsonResponse = response.body().string();JsonUtil.getAddresses(jsonResponse, mAddressesList);}}).requestAddresses(latitude, longitude);}}//网络请求public void requestAddresses(String latitude, String longitude) {if (TextUtils.isEmpty(latitude) || TextUtils.isEmpty(longitude)) {throw new NullPointerException("HttpClient.requestAddresses(),latitude is null or longitude is null");}OkHttpClient okHttpClient = new OkHttpClient();Request.Builder builder = new Request.Builder().get().url(Constants.GET_NEARBY_ADDRESSES_URL + "&location=" + latitude + "," + longitude + "&output=json&pois=1");Request request = builder.build();Call call = okHttpClient.newCall(request);call.enqueue(mCallback);}//附近位置接口String GET_NEARBY_ADDRESSES_URL = "http://api.map.baidu.com/geocoder/v2/?ak=6eea93095ae93db2c77be9ac910ff311&location=39.908853,116.366893&output=json&pois=1";

三、接口返回数据

{"status": 0,"result": {"location": {"lng": 116.36689299999995,"lat": 39.90885307752264},"formatted_address": "北京市西城区鲍家街43","business": "复兴门,西便门,长椿街","addressComponent": {"country": "中国","country_code": 0,"province": "北京市","city": "北京市","district": "西城区","town": "","adcode": "110102","street": "鲍家街","street_number": "43","direction": "附近","distance": "24"},"pois": [{"addr": "鲍家街43号及宗帽胡同甲2号","cp": " ","direction": "附近","distance": "35","name": "醇亲王南府","poiType": "旅游景点","point": {"x": 116.36717845491187,"y": 39.90874097912572},"tag": "旅游景点;文物古迹","tel": "","uid": "c1820fb2f1833759cac3db1e","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "北京市西城区鲍家街43号院新2号楼","cp": " ","direction": "附近","distance": "16","name": "鲍家街43号院新2号楼","poiType": "房地产","point": {"x": 116.36703472603027,"y": 39.90881707969393},"tag": "房地产;住宅区","tel": "","uid": "00a6781672e427648a2fb556","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "太平湖东里与鲍家街交叉口西50米","cp": " ","direction": "附近","distance": "17","name": "音苑美食楼-南门","poiType": "出入口","point": {"x": 116.36673828521198,"y": 39.908844752606704},"tag": "出入口;门","tel": "","uid": "d78e3da9fe40c2d4441a32a8","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "北京市西城区鲍家街43号","cp": " ","direction": "附近","distance": "37","name": "中央音乐学院-东门","poiType": "出入口","point": {"x": 116.36716048880167,"y": 39.908692551447025},"tag": "出入口;门","tel": "","uid": "3dc9befd8e0d7716bea24001","zip": "","parent_poi": {"name": "中央音乐学院","tag": "教育培训;高等院校","addr": "北京市西城区鲍家街43号","point": {"x": 116.36568726776531,"y": 39.90823594592287},"direction": "东北","distance": "161","uid": "74f24595717502a1441a32c6"}},{"addr": "鲍家街43号西门","cp": " ","direction": "东北","distance": "51","name": "鲍家街43号院","poiType": "房地产","point": {"x": 116.36654065799979,"y": 39.90862336898905},"tag": "房地产;住宅区","tel": "","uid": "1f86b02d1d7152d8ce04ef76","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "西城区鲍家街43号中央音乐学院内","cp": " ","direction": "东南","distance": "65","name": "中央音乐学院-音乐厅","poiType": "休闲娱乐","point": {"x": 116.36657659022019,"y": 39.90923909038928},"tag": "休闲娱乐;剧院","tel": "","uid": "fa18761b28eae24fe01103fc","zip": "","parent_poi": {"name": "中央音乐学院","tag": "教育培训;高等院校","addr": "北京市西城区鲍家街43号","point": {"x": 116.36568726776531,"y": 39.90823594592287},"direction": "东北","distance": "161","uid": "74f24595717502a1441a32c6"}},{"addr": "北京市西城区鲍家街43号","cp": " ","direction": "东北","distance": "161","name": "中央音乐学院","poiType": "教育培训","point": {"x": 116.36568726776531,"y": 39.90823594592287},"tag": "教育培训;高等院校","tel": "","uid": "74f24595717502a1441a32c6","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "鲍家街43号西门","cp": " ","direction": "北","distance": "74","name": "北京市西城区鲍家街43号院新1栋号","poiType": "房地产","point": {"x": 116.36689099714867,"y": 39.908339720175015},"tag": "房地产;住宅区","tel": "","uid": "2e9f702a2af312aedf1e5289","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "太平湖东里甲1号","cp": " ","direction": "北","distance": "201","name": "卓越烤鸭店","poiType": "美食","point": {"x": 116.36708862436087,"y": 39.90746801153214},"tag": "美食;中餐厅","tel": "","uid": "5ce2637d87b72748ae31e53f","zip": "","parent_poi": {"name": "","tag": "","addr": "","point": {"x": 0,"y": 0},"direction": "","distance": "","uid": ""}},{"addr": "鲍家街43号中央音乐学院图书馆楼2楼","cp": " ","direction": "东","distance": "247","name": "中央音乐学院-查阜西纪念馆","poiType": "旅游景点","point": {"x": 116.36480692836552,"y": 39.90827053735785},"tag": "旅游景点;文物古迹","tel": "","uid": "c0943a233e42f877ed74f8af","zip": "","parent_poi": {"name": "中央音乐学院","tag": "教育培训;高等院校","addr": "北京市西城区鲍家街43号","point": {"x": 116.36568726776531,"y": 39.90823594592287},"direction": "东北","distance": "161","uid": "74f24595717502a1441a32c6"}}],"roads": [],"poiRegions": [],"sematic_description": "醇亲王南府附近35米","cityCode": 131}
}

四、解析json数据，RecyclerView+Recycler.Adapter展示附近位置

解析json数据，获取附近位置List：

public static void getAddresses(String jsonStr, ArrayList list) {if (!TextUtils.isEmpty(jsonStr) && list != null) {try {JSONObject addresses = new JSONObject(jsonStr);JSONObject result = addresses.getJSONObject("result");JSONArray pois = result.optJSONArray("pois");if (pois != null && pois.length() > 0) {for (int i = 0; i < pois.length(); i++) {JSONObject address = pois.getJSONObject(i);if (address != null) {String name = address.getString("name");String number = address.getString("addr");Address each = new Address(name, number);list.add(each);}}}} catch (Exception e) {Log.i("TAG", e.getMessage());}}}

AddressListActivity中Recycler展示附近位置列表：

package com.xi.liuliu.topnews.activity;import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.KeyEvent;
import android.view.View;
import android.widget.TextView;import com.xi.liuliu.topnews.R;
import com.xi.liuliu.topnews.adapter.AddressListAdapter;
import com.xi.liuliu.topnews.bean.Address;
import com.xi.liuliu.topnews.constants.Constants;
import com.xi.liuliu.topnews.impl.OnItemClickListener;
import com.xi.liuliu.topnews.utils.SharedPrefUtil;import java.util.ArrayList;public class AddressListActivity extends AppCompatActivity implements View.OnClickListener {private TextView mCancle;private RecyclerView mRecyclerView;private ArrayList<Address> mAddressList;private LinearLayoutManager mLinearLayoutManager;private AddressListAdapter mAddressListAdapter;private SharedPrefUtil mSharedPrefUtil;private String mLastTimeAddress;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_address_list);initData();initView();}@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_BACK) {//AddressListActivity是由startActivityForResult启动的，所以AddressListActivity关闭前，必须setResult，否则crashIntent intent = new Intent();if (mLastTimeAddress != null) {if (mLastTimeAddress.equals("")) {intent.putExtra("address_name", "");} else {intent.putExtra("address_name", mLastTimeAddress);}}setResult(0, intent);}return super.onKeyDown(keyCode, event);}private void initData() {mAddressList = getIntent().getParcelableArrayListExtra("addressList");mSharedPrefUtil = SharedPrefUtil.getInstance(this);mLastTimeAddress = mSharedPrefUtil.getString(Constants.LOCATION_ADDRESS_SP_KEY);mLinearLayoutManager = new LinearLayoutManager(this);mAddressListAdapter = new AddressListAdapter(mAddressList, mLastTimeAddress);}private void initView() {mCancle = (TextView) findViewById(R.id.go_back_btn_address_list);mCancle.setOnClickListener(this);mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view_address_list);mRecyclerView.setLayoutManager(mLinearLayoutManager);//如果每个item的高度是固定的，设置这个选项可以提高性能mRecyclerView.setHasFixedSize(true);mRecyclerView.setAdapter(mAddressListAdapter);mAddressListAdapter.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(View view, int position) {Intent intent = new Intent();String addressName;if (position == 0) {addressName = "";} else {Address selectedAddress = mAddressList.get(position - 1);addressName = selectedAddress.getName();}intent.putExtra("address_name", addressName);mSharedPrefUtil.putString(Constants.LOCATION_ADDRESS_SP_KEY, addressName);setResult(0, intent);finish();}});}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.go_back_btn_address_list://AddressListActivity是由startActivityForResult启动的，所以AddressListActivity关闭前，必须setResult，否则crashIntent intent = new Intent();if (mLastTimeAddress != null) {if (mLastTimeAddress.equals("")) {intent.putExtra("address_name", "");} else {intent.putExtra("address_name", mLastTimeAddress);}}setResult(0, intent);finish();break;}}}

AddressListAdapter:

package com.xi.liuliu.topnews.adapter;import android.support.v7.widget.RecyclerView;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;import com.xi.liuliu.topnews.R;
import com.xi.liuliu.topnews.bean.Address;
import com.xi.liuliu.topnews.impl.OnItemClickListener;import java.util.ArrayList;/*** Created by zhangxb171 on 2017/9/6.*/public class AddressListAdapter extends RecyclerView.Adapter implements View.OnClickListener {private static final String TAG = "AddressListAdapter";private static final int TYPE_NOT_SHOW_ADDRESS = 0;private static final int TYPE_SHOW_ADDRESS = 1;private ArrayList<Address> mAddressList;private OnItemClickListener mOnItemClickListener;private String mLastTimeAddress;public AddressListAdapter(ArrayList<Address> list, String lastTimeAddress) {this.mAddressList = list;this.mLastTimeAddress = lastTimeAddress;reorderAddressList();}@Overridepublic RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {if (viewType == TYPE_SHOW_ADDRESS) {View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_address_list, parent, false);view.setOnClickListener(this);AddressListHolder holder = new AddressListHolder(view);holder.addressName = (TextView) view.findViewById(R.id.address_name_item_address_list);holder.addressNumber = (TextView) view.findViewById(R.id.address_number_item_address_list);holder.itemSelected = (ImageView) view.findViewById(R.id.location_selected_item_address_list);return holder;} else {View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_address_not_show, parent, false);view.setOnClickListener(this);AddressNoHolder holder = new AddressNoHolder(view);holder.textView = (TextView) view.findViewById(R.id.address_not_show);holder.itemSelected = (ImageView) view.findViewById(R.id.location_selected_not_show);return holder;}}@Overridepublic void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {//将position保存在itemView的Tag中，以便点击时进行获取holder.itemView.setTag(position);if (getItemViewType(position) == TYPE_SHOW_ADDRESS) {AddressListHolder addressListHolder = (AddressListHolder) holder;if (mAddressList != null && mAddressList.size() > 0) {String addressName = mAddressList.get(position - 1).getName();String addressNumber = mAddressList.get(position - 1).getNumber();addressListHolder.addressName.setText(addressName);addressListHolder.addressNumber.setText(addressNumber);if (mLastTimeAddress != null && mLastTimeAddress.equals(addressName)) {addressListHolder.itemSelected.setVisibility(View.VISIBLE);}}} else {//上次没有选择位置的话，让对勾出现AddressNoHolder addressNoHolder = (AddressNoHolder) holder;if (mLastTimeAddress != null && mLastTimeAddress.equals("")) {addressNoHolder.itemSelected.setVisibility(View.VISIBLE);}}}@Overridepublic int getItemCount() {return mAddressList.size() + 1;}@Overridepublic int getItemViewType(int position) {if (position == 0) {return TYPE_NOT_SHOW_ADDRESS;} else {return TYPE_SHOW_ADDRESS;}}@Overridepublic void onClick(View v) {if (mOnItemClickListener != null) {//使用getTag方法获取positionmOnItemClickListener.onItemClick(v, (int) v.getTag());}}private static class AddressListHolder extends RecyclerView.ViewHolder {TextView addressName;TextView addressNumber;ImageView itemSelected;View addressItemView;public AddressListHolder(View itemView) {super(itemView);addressItemView = itemView;}}private static class AddressNoHolder extends RecyclerView.ViewHolder {TextView textView;ImageView itemSelected;View view;public AddressNoHolder(View itemView) {super(itemView);view = itemView;}}public void setOnItemClickListener(OnItemClickListener listener) {this.mOnItemClickListener = listener;}/*** 将上次选择的位置放在数组顶部(地址列表的第二个位置)*/private void reorderAddressList() {if (!TextUtils.isEmpty(mLastTimeAddress)) {if (mAddressList != null && mAddressList.size() > 0) {for (int i = 0; i < mAddressList.size(); i++) {Address address = mAddressList.get(i);if (address.getName().equals(mLastTimeAddress)) {//将上次选择的位置放在数组顶部mAddressList.add(0, address);mAddressList.remove(i + 1);return;}}}}}
}

个人水平有限，希望大家批评指正，代码地址： https://github.com/xiyy/TopNews

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