android - 无法停止 Firebase JobDispatcher 服务

Question

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我已经创建了一个 JobDispatcher 服务来持续在后台获取用户位置并将用户位置发布到服务器。为此，我创建了一个作业如下:

private void startLocationJobService() {
        // Check if location job service already running
        if(!isMyServiceRunning(LocationJobService.class)) {
            Context context = config.getActivity();
            FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(context));
            Job job = dispatcher.newJobBuilder()
                    .setLifetime(Lifetime.FOREVER)
                    .setService(LocationJobService.class)
                    .setTag(JOB_SERVICE_TAG)
                    .setReplaceCurrent(true)
                    .build();

            //creating new job and adding it with dispatcher
            dispatcher.mustSchedule(job);
        }
    }

private boolean isMyServiceRunning(Class<?> serviceClass) {
        ActivityManager manager = (ActivityManager) config.getActivity().getSystemService(Context.ACTIVITY_SERVICE);
        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
            if (serviceClass.getName().equals(service.service.getClassName())) {
                return true;
            }
        }
        return false;
    }

在服务的 onStartJob 中，我正在配置位置 api 以获取用户位置

public boolean onStartJob(final JobParameters job) {
        Log.i("TAG", "Service Run onStartJob called");
        configureFusedLocation(LocationJobService.this);
        return true;
    } 

服务启动并按预期继续运行。但它并没有停止。我已经使用两种方式(dispatcher.cancel 和 stopService)来停止服务，如下所示:

public void stopService() {
        if(isMyServiceRunning(LocationJobService.class)) {
            config.getActivity().stopService(new Intent(config.getActivity(), LocationJobService.class));
            cancelLocationJobService();
        }
    }

private void cancelLocationJobService(){
        FirebaseJobDispatcher dispatcher = new FirebaseJobDispatcher(new GooglePlayDriver(config.getActivity()));
        // Cancel the job for this tag
        dispatcher.cancel(JOB_SERVICE_TAG);
        //Cancel all the jobs for this package
        dispatcher.cancelAll();
    }

Answer 1

您需要取消注册位置监听器并在 LocationJobService 中调用 jobFinished() 来取消作业本身。

因为 dispatcher.cancelAll() 仅用于取消尚未运行的预定作业。 您可以使用 Eventbus 等工具来通知服务何时停止。

引用https://medium.com/google-developers/scheduling-jobs-like-a-pro-with-jobscheduler-286ef8510129了解更多信息。