Question

我正在使用此cordova插件https://github.com/christocracy/cordova-plugin-background-geolocation/作为ios应用，但遇到了一些问题。如果有人可以提供帮助，我将不胜感激。

以下是我从插件示例本身使用的示例代码。

问题是当检测到位置变化时，回调函数（callbackFn）似乎没有被调用，但是我确实在Iphone上收到通知，我看到其中一个通知是因为突出的bg-task被强行杀死了。不知道究竟是什么意思......

var app = {
    // Application Constructor
    initialize: function() {
        this.bindEvents();
    },
     bindEvents: function() {
        document.addEventListener('deviceready', this.onDeviceReady, false);
    },

onDeviceReady: function() {
    app.receivedEvent('deviceready');
     if (window.plugins.backgroundGeoLocation) {
        app.configureBackgroundGeoLocation();
      }
},
// Update DOM on a Received Event
receivedEvent: function(id) {
    window.cache.clear( function(){console.log("cache cleared");}, function(){console.log("cache could not be cleared");} );
    require(['http://localhost:8080/sdm/app_resources/app_product_HY6I1FJ5KGRD/resources/js/main.js']);

},
configureBackgroundGeoLocation: function() {
        // Your app must execute AT LEAST ONE call for the current position via standard Cordova geolocation,
            //  in order to prompt the user for Location permission.
            window.navigator.geolocation.getCurrentPosition(function(location) {
                 console.log('Location from Phonegap');
             });

            var bgGeo = window.plugins.backgroundGeoLocation;

      /** This would be your own callback for Ajax-requests after POSTing background geolocation to your server.*/

            var yourAjaxCallback = function(response) {
                    bgGeo.finish();
                };

 /**This callback will be executed every time a geolocation is recorded in the background.*/
            var callbackFn = function(location) {
                console.log('[js] BackgroundGeoLocation callback:  ' + location.latitudue + ',' + location.longitude);
                // Do your HTTP request here to POST location to your server.
                 deviceId = 'I2FKRKXX8SQ0';
                 trackingToken = 'SomeSecurityToken';
                 jsonData={location:{longitude:location.longitude,latitude:location.latitude}};
                 var encodedToken = Base64.encode('tracker' + ':' + trackingToken);
                 var http = new XMLHttpRequest();
                 var url = "http://localhost:8080/sdm/v1/KC/host/device/"+deviceId;

                 var params = JSON.stringify(jsonData);
                 http.open("PUT", url, true);

                 //Send the proper header information along with the request
                 http.setRequestHeader("Content-type", "application/json");
                 http.setRequestHeader("accept", "json");
                 http.setRequestHeader("Authorization", "Basic "+encodedToken);
                 http.setRequestHeader("Content-length", params.length);
                 http.setRequestHeader("Connection", "close");

                /* http.onreadystatechange = function() {//Call a function when the state changes.
                 if(http.readyState == 4 && http.status == 200) {
                 alert(http.responseText);
                 }
                 }*/
                 http.send(params);

                yourAjaxCallback.call(this);
            };

            var failureFn = function(error) {
                    console.log('BackgroundGeoLocation error');
                }

            // BackgroundGeoLocation is highly configurable.
            bgGeo.configure(callbackFn, failureFn, {
                 desiredAccuracy: 10,
                 stationaryRadius: 20,
                 distanceFilter: 30,
                 activityType: 'AutomotiveNavigation',
                 debug: true, // <-- enable this hear sounds for background-geolocation life-cycle.
                 stopOnTerminate: false
               });

            // Turn ON the background-geolocation system.  The user will be tracked whenever they suspend the app.
            bgGeo.start();

            // If you wish to turn OFF background-tracking, call the #stop method.
            // bgGeo.stop()
        }

};

Answer 1

如果您愿意，可以尝试我的后台插件，它使用ios和android的纯javascript回调。

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

Answer 2

检查您是否使用了android。除非你有高级版的Christrocracy插件，否则它不会执行你的回调函数。您必须为要为Android设备发送的位置指定url。

Christocracy Background Geooction Plugin

Answer 3

您还必须在开始时添加回调函数和失败函数。我有同样的问题。例如。配置：bgGeo.configure(callbackFn, failureFn... bgGeo.start();必须更改为bgGeo.start(callbackFn, failureFn);

Cordova背景GeoLocation插件

3 个答案: