安装：

$    ionic cordova plugin add cordova-plugin-geolocation --variable GEOLOCATION_USAGE_DESCRIPTION="To locate you"

$    npm install --save @ionic-native/geolocation

在app.module.ts中导入,注意，providers中要声明：

import { Geolocation } from '@ionic-native/geolocation';

providers: [ StatusBar, SplashScreen, Geolocation, {provide: ErrorHandler, useClass: IonicErrorHandler} ]

在你项目的ts文件中导入：

import { Geolocation } from '@ionic-native/geolocation';

constructor( private geolocation: Geolocation) {  }

代码：

this.geolocation.getCurrentPosition().then((resp) => {

console.log(resp.coords.latitude );    //纬度

console.log(resp.coords.longitude);    //经度

}).catch((error) => {  console.log('Error getting location', error);});