如何解决为什么在Cordova中未调用“ BackgroundFetchHeadlessTask.java”？

我正在使用cordova-plugin-background-fetch执行后台进程，我甚至希望我的应用终止时运行后台任务。根据{{3}}，为了使enableHeadless: true工作，我需要编写Java代码，并将BackgroundFetchHeadlessTask.java文件放置在应用程序中的任何位置。调试应用程序时，我看不到任何证据表明执行了BackgroundFetchHeadlessTask.java。我的BackgroundFetchHeadlessTask.java文件放在MyProjectFolder/src/android/BackgroundFetchHeadlessTask.java中。

我也尝试过cordova-plugin-background-mode，但是当我终止我的应用程序时，它将停止后台进程。 cordova-plugin-background-fetch符合我的所有要求，所以这就是为什么我现在坚持使用它。

类似的问题在这里documentation提出，但不能解决我的问题。在这个问题中，@ Blue Ace在他的配置文件中有一个错误，该文件中的目标参数设置不正确。我的目标参数是根据here设置的。

我的代码：

JS代码

deviceReady: function() {
var BackgroundFetch = window.BackgroundFetch;

// Your background-fetch handler.
var fetchCallback = function(taskId) {
    console.log('[js] BackgroundFetch event received: ',taskId);
    // Required: Signal completion of your task to native code
    // If you fail to do this,the OS can terminate your app
    // or assign battery-blame for consuming too much background-time
    BackgroundFetch.finish(taskId);
};

var failureCallback = function(error) {
    console.log('- BackgroundFetch failed',error);
};

BackgroundFetch.configure(fetchCallback,failureCallback,{
    minimumFetchInterval: 15,// <-- default is 15
    enableHeadless: true,stopOnTerminate: false,startOnBoot: true,requiredNetworkType: BackgroundFetch.NETWORK_TYPE_ANY
});

},

Java代码

package com.transistorsoft.cordova.backgroundfetch;

import android.content.Context;
import android.util.Log;

import com.transistorsoft.tsbackgroundfetch.BackgroundFetch;

/**
 * Created by chris on 2018-01-22.
 */

public class BackgroundFetchHeadlessTask implements HeadlessTask {
    @Override
    public void onFetch(Context context,String taskId) {
        Log.d(BackgroundFetch.TAG,"BackgroundFetchHeadlessTask onFetch -- DEFAULT IMPLEMENTATION");
        BackgroundFetch.getInstance(context).finish(taskId);
    }
}

config.xml

<platform name="android">
        <allow-intent href="market:*" />
        <resource-file src="src/android/BackgroundFetchHeadlessTask.java" target="app/src/main/java/com/transistorsoft/cordova/backgroundfetch/BackgroundFetchHeadlessTask.java" />
</platform>

这是我想要的：

2020-10-13 11:01:54.927 8566-8694/com.menu.menu D/TSBackgroundFetch: - BackgroundFetchHeadlessTask onFetch -- DEFAULT IMPLEMENTATION

这是我得到的：

2020-10-13 11:01:54.927 8566-8694/com.menu.menu D/TSBackgroundFetch: - configure
2020-10-13 11:01:54.928 8566-8694/com.menu.menu D/TSBackgroundFetch: - start
2020-10-13 11:01:54.929 8566-8694/com.menu.menu D/TSBackgroundFetch: - registerTask: cordova-background-fetch
2020-10-13 11:01:54.933 8566-8694/com.menu.menu D/TSBackgroundFetch: {
      "taskId": "cordova-background-fetch","isFetchTask": true,"minimumFetchInterval": 15,"stopOnTerminate": false,"requiredNetworkType": 1,"requiresBatteryNotLow": false,"requiresCharging": false,"requiresDeviceIdle": false,"requiresStorageNotLow": false,"startOnBoot": true,"jobService": "com.transistorsoft.cordova.backgroundfetch.BackgroundFetchHeadlessTask","forceAlarmManager": false,"periodic": true,"delay": -1
    }
2020-10-13 11:01:54.945 8566-8566/com.menu.menu D/TSBackgroundFetch: - Background Fetch event received
2020-10-13 11:01:55.009 8566-8694/com.menu.menu D/TSBackgroundFetch: - finish: cordova-background-fetch
2020-10-13 11:01:55.009 8566-8694/com.menu.menu D/TSBackgroundFetch: - jobFinished
2020-10-13 11:01:55.012 8566-8566/com.menu.menu I/chromium: [INFO:CONSOLE(61)] "[js] BackgroundFetch event received:  cordova-background-fetch"

然后每15分钟：

2020-10-13 11:32:39.689 8566-8566/com.menu.menu D/TSBackgroundFetch: - Background Fetch event received
2020-10-13 11:32:39.693 8566-8566/com.menu.menu I/chromium: [INFO:CONSOLE(61)] "[js] BackgroundFetch event received:  cordova-background-fetch"
2020-10-13 11:32:39.694 8566-8694/com.menu.menu D/TSBackgroundFetch: - finish: cordova-background-fetch
2020-10-13 11:32:39.694 8566-8694/com.menu.menu D/TSBackgroundFetch: - jobFinished

有没有解决此问题的方法，或者是否有任何其他替代cordova-plugin-background-fetch的方法？

为什么在Cordova中未调用“ BackgroundFetchHeadlessTask.java”？