Question

我有一个android phonegap cordova gps跟踪系统，它根据cordova App上php文件中的数据库（名称，用户和密码）将位置发送到远程服务器数据库。

服务器端由php编写，其确定。
我的问题是，如果我回到App，它会停止发送位置，因为它无法在后台运行。

我的问题是：

如何以简单的方式将我的应用程序转为启动或作为后台服务请一步一步请我不专业： - ）

Answer 1

背景Cordova GeoLocation：

首先需要做的是，您需要添加backgroudgeolocation plugin，这有助于您在应用程序中添加需要的服务。

使用插件

该插件使用方法

创建对象window.plugins.backgroundGeoLocation

configure(success, fail, option),

start(success, fail)

stop(success, fail).

安装插件：

cordova插件添加https://github.com/christocracy/cordova-plugin-background-geolocation.git ACHTUNG！如果您不使用Cordova 5.x，则必须使用标记分支#cordova-4.x来安装插件，如下所示（因为Cordova已迁移到npm）

cordova插件添加https://github.com/christocracy/cordova-plugin-background-geolocation.git#cordova-4.x 一个完整的例子可能是：

//
//
// after deviceready
//
//

// 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) {
    ////
    // IMPORTANT:  You must execute the #finish method here to inform the native plugin that you're finished,
    //  and the background-task may be completed.  You must do this regardless if your HTTP request is successful or not.
    // IF YOU DON'T, ios will CRASH YOUR APP for spending too much time in the background.
    //
    //
    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.latitude + ',' + location.longitude);
    // Do your HTTP request here to POST location to your server.
    //
    //
    yourAjaxCallback.call(this);
};

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

// BackgroundGeoLocation is highly configurable.
bgGeo.configure(callbackFn, failureFn, {
    url: 'http://only.for.android.com/update_location.json', // <-- Android ONLY:  your server url to send locations to
    params: {
        auth_token: 'user_secret_auth_token',    //  <-- Android ONLY:  HTTP POST params sent to your server when persisting locations.
        foo: 'bar'                              //  <-- Android ONLY:  HTTP POST params sent to your server when persisting locations.
    },
    headers: {                                   // <-- Android ONLY:  Optional HTTP headers sent to your configured #url when persisting locations
        "X-Foo": "BAR"
    },
    desiredAccuracy: 10,
    stationaryRadius: 20,
    distanceFilter: 30,
    notificationTitle: 'Background tracking', // <-- android only, customize the title of the notification
    notificationText: 'ENABLED', // <-- android only, customize the text of the notification
    activityType: 'AutomotiveNavigation',
    debug: true, // <-- enable this hear sounds for background-geolocation life-cycle.
    stopOnTerminate: false // <-- enable this to clear background location settings when the app terminates
});

// 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()

注意：该插件包含org.apache.cordova.geolocation作为依赖项。您必须在前台启用Cordova的GeoLocation，并让用户通过执行#watchPosition或#getCurrentPosition接受位置服务。

首先，将SampleApp从repo中复制到您想要的任何文件夹中（例如：tmp）。

$ cp -R cordova-plugin-background-geolocation/example/SampleApp ./tmp
$ cd tmp/SampleApp
$ cordova plugin add https://github.com/christocracy/cordova-plugin-background-geolocation.git
$ cordova platform add ios
$ cordova build ios

有关更多信息，请单击以下链接：

Cordova background-geolocation

干杯，快乐的编码。

将我的phonegap cordova gps跟踪系统转为启动或作为服务工作

1 个答案: