微信小程序获取当前位置 地图定位导航-详细代码

/** * 微信小程序JavaScriptSDK * * @version 1.0 * @date 2017-01-10 * @author jaysonzhou@tencent.com */ var ERROR_CONF = { KEY_ERR: 311, KEY_ERR_MSG: 'key格式错误', PARAM_ERR: 310, PARAM_ERR_MSG: '请求参数信息有误', SYSTEM_ERR: 600, SYSTEM_ERR_MSG: '系统错误', WX_ERR_CODE: 1000, WX_OK_CODE: 200 }; var BASE_URL = 'https://apis.map.qq.com/ws/'; var URL_SEARCH = BASE_URL + 'place/v1/search'; var URL_SUGGESTION = BASE_URL + 'place/v1/suggestion'; var URL_GET_GEOCODER = BASE_URL + 'geocoder/v1/'; var URL_CITY_LIST = BASE_URL + 'district/v1/list'; var URL_AREA_LIST = BASE_URL + 'district/v1/getchildren'; var URL_DISTANCE = BASE_URL + 'distance/v1/'; var Utils = { /** * 得到终点query字符串 * @param {Array|String} 检索数据 */ location2query(data) { if (typeof data == 'string') { return data; } var query = ''; for (var i = 0; i < data.length; i++) { var d = data[i]; if (!!query) { query += ';'; } if (d.location) { query = query + d.location.lat + ',' + d.location.lng; } if (d.latitude && d.longitude) { query = query + d.latitude + ',' + d.longitude; } } return query; }, /** * 使用微信接口进行定位 */ getWXLocation(success, fail, complete) { wx.getLocation({ type: 'gcj02', success: success, fail: fail, complete: complete }); }, /** * 获取location参数 */ getLocationParam(location) { if (typeof location == 'string') { var locationArr = location.split(','); if (locationArr.length === 2) { location = { latitude: location.split(',')[0], longitude: location.split(',')[1] }; } else { location = {}; } } return location; }, /** * 回调函数默认处理 */ polyfillParam(param) { param.success = param.success || function () { }; param.fail = param.fail || function () { }; param.complete = param.complete || function () { }; }, /** * 验证param对应的key值是否为空 * * @param {Object} param 接口参数 * @param {String} key 对应参数的key */ checkParamKeyEmpty(param, key) { if (!param[key]) { var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + key +'参数格式有误'); param.fail(errconf); param.complete(errconf); return true; } return false; }, /** * 验证参数中是否存在检索词keyword * * @param {Object} param 接口参数 */ checkKeyword(param){ return !this.checkParamKeyEmpty(param, 'keyword'); }, /** * 验证location值 * * @param {Object} param 接口参数 */ checkLocation(param) { var location = this.getLocationParam(param.location); if (!location || !location.latitude || !location.longitude) { var errconf = this.buildErrorConfig(ERROR_CONF.PARAM_ERR, ERROR_CONF.PARAM_ERR_MSG + ' location参数格式有误') param.fail(errconf); param.complete(errconf); return false; } return true; }, /** * 构造错误数据结构 * @param {Number} errCode 错误码 * @param {Number} errMsg 错误描述 */ buildErrorConfig(errCode, errMsg) { return { status: errCode, message: errMsg }; }, /** * 构造微信请求参数，公共属性处理 * * @param {Object} param 接口参数 * @param {Object} param 配置项 */ buildWxRequestConfig(param, options) { var that = this; options.header = { "content-type": "application/json" }; options.method = 'GET'; options.success = function (res) { var data = res.data; if (data.status === 0) { param.success(data); } else { param.fail(data); } }; options.fail = function (res) { res.statusCode = ERROR_CONF.WX_ERR_CODE; param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, result.errMsg)); }; options.complete = function (res) { var statusCode = +res.statusCode; switch(statusCode) { case ERROR_CONF.WX_ERR_CODE: { param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg)); break; } case ERROR_CONF.WX_OK_CODE: { var data = res.data; if (data.status === 0) { param.complete(data); } else { param.complete(that.buildErrorConfig(data.status, data.message)); } break; } default:{ param.complete(that.buildErrorConfig(ERROR_CONF.SYSTEM_ERR, ERROR_CONF.SYSTEM_ERR_MSG)); } } } return options; }, /** * 处理用户参数是否传入坐标进行不同的处理 */ locationProcess(param, locationsuccess, locationfail, locationcomplete) { var that = this; locationfail = locationfail || function (res) { res.statusCode = ERROR_CONF.WX_ERR_CODE; param.fail(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg)); }; locationcomplete = locationcomplete || function (res) { if (res.statusCode == ERROR_CONF.WX_ERR_CODE) { param.complete(that.buildErrorConfig(ERROR_CONF.WX_ERR_CODE, res.errMsg)); } }; if (!param.location) { that.getWXLocation(locationsuccess, locationfail, locationcomplete); } else if (that.checkLocation(param)) { var location = Utils.getLocationParam(param.location); locationsuccess(location); } } } class QQMapWX { /** * 构造函数 * * @param {Object} options 接口参数,key 为必选参数 */ constructor(options) { if (!options.key) { throw Error('key值不能为空'); } this.key = options.key; } /** * POI周边检索 * * @param {Object} options 接口参数对象 * * 参数对象结构可以参考 * @see http://lbs.qq.com/webservice_v1/guide-search.html */ search(options) { var that = this; options = options || {}; Utils.polyfillParam(options); if (!Utils.checkKeyword(options)) { return; } var requestParam = { keyword: options.keyword, orderby: options.orderby || '_distance', page_size: options.page_size || 10, page_index: options.page_index || 1, output: 'json', key: that.key }; if (options.address_format) { requestParam.address_format = options.address_format; } if (options.filter) { requestParam.filter = options.filter; } var distance = options.distance || "1000"; var auto_extend = options.auto_extend || 1; var locationsuccess = function (result) { requestParam.boundary = "nearby(" + res