Question

我正在尝试在Android中安排Future的通知。但它现在就给我通知了。

scheduleNotification Method。

private void scheduleNotification(Notification notification, long delay) {
    Intent notificationIntent = new Intent(getContext(), NotificationReceiver.class);
    notificationIntent.putExtra(Constants.TimeTableTasksNotification.NOTIFICATION_ID, 1);
    notificationIntent.putExtra(Constants.TimeTableTasksNotification.NOTIFICATION, notification);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getContext(), 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);

    long futureInMillis = delay - (new Date()).getTime();
    long minutes = TimeUnit.MILLISECONDS.toMinutes(futureInMillis);
    Toast.makeText(context, "" + futureInMillis, Toast.LENGTH_SHORT).show();
    Toast.makeText(context, "" + minutes, Toast.LENGTH_SHORT).show();
    AlarmManager alarmManager = (AlarmManager) getContext().getSystemService(Context.ALARM_SERVICE);
    alarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, futureInMillis, pendingIntent);
}

getNotification方法。

private Notification getNotification(String message) {
    Notification.Builder builder = new Notification.Builder(getContext());
    builder.setContentTitle("Time To do the Task.");
    builder.setContentText(message);
    builder.setSmallIcon(R.drawable.logo);
    builder.setVibrate(new long[]{1000, 1000, 1000, 1000, 1000});
    builder.setLights(Color.BLUE, 3000, 3000);
    return builder.build();
}

我将此格式的日期作为字符串日期。

String inputDate = "09/05/2017 10:20";

使用下面的代码我得到的时间是毫秒。

SimpleDateFormat simpleDateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm", Locale.ENGLISH);
        try {
            Date date = simpleDateFormat.parse(inputDate);
            long milliSeconds = date.getTime();
            scheduleNotification(getNotification("Notification Title."), milliSeconds);
        } catch (ParseException e) {
            Log.d("DialogAddScheduleTask", e.getMessage());
            e.printStackTrace();
        }

和最后这是我的NotificationReceiver类

    public class NotificationReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

        Notification notification = intent.getParcelableExtra(Constants.TimeTableTasksNotification.NOTIFICATION);
        int id = intent.getIntExtra(Constants.TimeTableTasksNotification.NOTIFICATION_ID, 0);
        notificationManager.notify(id, notification);
    }
}

所有东西也都在Manifest中。我添加了权限，并且我也注册了我的接收器。

但无法弄清楚为什么它确实及时给我通知。

Answer 1

尝试此操作来安排通知

words.append(current_word)

了解更多信息Scheduling Repeating Alarms

Answer 2

检查futureInMillis的值

通知计划程序无法正常工作

2 个答案: