移动应用程序在后台时的 GPS 位置(使用 ionicframework)

Question

我需要实现一个应用程序来存储用户从A移动到B时的旅程(路径)。现在，我知道ionicframework可以使用GPS，但是当我的应用程序转到后台时会发生什么？我的应用程序如何继续存储用户位置？这可能吗 ？有没有我可以使用的插件(请不要超过 600 美元)？

Answer 1

我刚刚为 ios 和 android 编写了一个新的 cordova 后台地理定位插件，它免费且简单!尝试一下:

https://github.com/pmwisdom/cordova-background-geolocation-services

ionic 用法:

//Wait for cordova / ionic ready to use the plugin
ionic.Platform.ready(function(){
    //Make sure to get at least one GPS coordinate in the foreground before starting background services
    navigator.geolocation.getCurrentPosition();

    //1. Get plugin
    var bgLocationServices =  window.plugins.backgroundLocationServices;

    //2. Configure Plugin
    bgLocationServices.configure({
         desiredAccuracy: 20, 
         distanceFilter: 5, 
         notificationTitle: 'BG Plugin', 
         notificationText: 'Tracking',
         debug: true, 
         interval: 9000, 
         fastestInterval: 5000
    });

    //3. Register a callback for location updates, this is where location objects will be sent in the background
    bgLocationServices.registerForLocationUpdates(function(location) {
         console.log("We got a BG Update" + JSON.stringify(location));
    }, function(err) {
         console.log("Error: Didn't get an update", err);
    });

    //4. Start the Background Tracker. When you enter the background tracking will start, and stop when you enter the foreground.
    bgLocationServices.start();


    ///later, to stop
    bgLocationServices.stop();

});