rn_supermap
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rn_supermap 一款基于React-Native框架的移动应用开发工具。基于该开发工具，用户可以使用JavaScript开发语言，开发出在Android和IOS操作系统下运行的原生移动GIS应用，入门门槛低，一次开发，处处运行。
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<h1 class="page-title">Source: LocationManager.js</h1>
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<pre class="prettyprint source linenums"><code>/*********************************************************************************
Copyright © SuperMap. All rights reserved.
Author: Wang zihao
E-mail: pridehao@gmail.com
**********************************************************************************/
import {NativeModules,DeviceEventEmitter} from 'react-native';
let LM = NativeModules.JSLocationManager;
/**
* @class LocationManager
* @description 位置管理插件，目前仅支持从GPS设备中获取当前位置。
*/
export default class LocationManager {
/**
* 创建一个LocationManager实例
* @memberOf LocationManager
* @returns {Promise.<LocationManager>}
*/
async createObj(){
try{
var {_locationManagePluginId_} = await LM.createObj();
var loactionManager = new LocationManager();
loactionManager._SMLocationManagerId = _locationManagePluginId_;
return loactionManager;
}catch (e){
console.error(e);
}
}
/**
* 开启GPS设备。
* @memberOf LocationManager
* @returns {Promise.<void>}
*/
async openGpsDevice(){
try{
await LM.openGpsDevice(this._SMLocationManagerId);
}catch (e){
console.error(e);
}
}
/**
* 关闭GPS设备。
* @memberOf LocationManager
* @returns {Promise.<void>}
*/
async closeGpsDevice(){
try{
await LM.closeGpsDevice(this._SMLocationManagerId);
}catch (e){
console.error(e);
}
}
/**
* 监听定位信息，获取定位数据
* @memberOf LocationManager
* @param {function}_callback - 位置信息变化处理函数，回调参数保存e:{"oldGps":object,"newGps":object,isGPSPointValid:boolean}
* @description Gps对象数据（oldGps,newGps):{dAltitude:double,dBearing:double,dLatitude:double,dLongitude:double,dSpeed:double,lTime:string,nDay:number,nEasting:number,nFixMode:number,nHour:number,nMinute:number,nNorthing:number,nQualityIndicator:number,nSatellites:number,nSecond:number,nYear:number}
* @returns {Promise.<void>}
*/
async getLocationInfo(_callback){
try{
DeviceEventEmitter.addListener("com.supermap.RN.JSLocationManager.location_changed_event",function (e) {
if(typeof _callback == "function"){
console.log("locationManager");
_callback(e);
}else{
console.error("Please set a callback in the first argument.");
}
});
await LM.getLocationInfo(this._SMLocationManagerId);
}catch (e){
console.error(e);
}
}
}
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