创建要在后台运行的服务并创建通知

Question

[好，所以从某种意义上说，这是一种重复，例如以下问题：Using Service to run background and create notification，我从中获取了代码并让其完成了我需要做的工作。

但是所有答案现在都存在问题，他们希望使用现在已贬值的WakefulBroadcastReceiver。我了解我现在需要使用JobService，因此我尝试更新上一篇文章中的代码，使其看起来像这样（本教程的一部分https://www.vogella.com/tutorials/AndroidTaskScheduling/article.html）

public class NotificationEventReceiver extends JobService {

    private static final String ACTION_START_NOTIFICATION_SERVICE = "ACTION_START_NOTIFICATION_SERVICE";
    private static final String ACTION_DELETE_NOTIFICATION = "ACTION_DELETE_NOTIFICATION";
    private static final int NOTIFICATIONS_INTERVAL = 1;

    public static void setupAlarm(Context context) {
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
        PendingIntent alarmIntent = getStartPendingIntent(context);
        alarmManager.setRepeating(AlarmManager.RTC,
                getTriggerAt(new Date()),
                NOTIFICATIONS_INTERVAL * AlarmManager.INTERVAL_DAY,
                alarmIntent);
    }

    private static long getTriggerAt(Date now) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(now);
        //calendar.add(Calendar.HOUR, NOTIFICATIONS_INTERVAL_IN_HOURS);
        calendar.set(Calendar.HOUR_OF_DAY, 5);
        calendar.set(Calendar.MINUTE, 0);
        return calendar.getTimeInMillis();
    }

    @Override
    public boolean onStartJob(JobParameters params) {
        Intent service = new Intent(getApplicationContext(), NotificationIntentService.class);
        getApplicationContext().startService(service);
        setupAlarm(getApplicationContext()); // reschedule the job
        return true;
    }

    @Override
    public boolean onStopJob(JobParameters params) {
        return true;
    }

    private static PendingIntent getStartPendingIntent(Context context) {
        Intent intent = new Intent(context, NotificationEventReceiver.class);
        intent.setAction(ACTION_START_NOTIFICATION_SERVICE);
        return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }

    public static PendingIntent getDeleteIntent(Context context) {
        Intent intent = new Intent(context, NotificationEventReceiver.class);
        intent.setAction(ACTION_DELETE_NOTIFICATION);
        return PendingIntent.getBroadcast(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
    }
}

然后在Android清单中

    <service
        android:name=".NotificationEventReceiver"
        android:label="Notification Service"
        android:permission="android.permission.BIND_JOB_SERVICE" />

运行时，我不再收到任何通知，因此我显然做错了什么，但是我无所适从，因为我需要做的事情。

Answer 1

我最近遇到了这个问题，我使用广播接收器解决了我的问题。