android - 使用警报管理器安排通知

Question

我的 alarmManager 遇到了一个小问题。我正在尝试注册一个警报以在特定时间显示通知。这是我的做法:

Utils.SetAlarm(this, Utils.GOODMORNING, 7, 0, 0); // so at 7:00

---

public static void SetAlarm(Context context, int req, int hour, int minute, int second) {
    AlarmManager am = (AlarmManager) context.getSystemService(context.ALARM_SERVICE);
    Intent intent = new Intent(context, myService.class);
    intent.putExtra(ACTION_REQUEST, req);
    PendingIntent pi = PendingIntent.getService(context, 0, intent, 0);

    Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, hour);
    calendar.set(Calendar.MINUTE, minute);
    calendar.set(Calendar.SECOND, second);

    am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, pi);
}

---

public class myService extends IntentService {
private static final int GOODMORNING_NOTIFICATION_REQUEST = 517;

public myService() {
    super("myService");
}

@Override
protected void onHandleIntent(Intent intent) {
    int extra = intent.getIntExtra(Utils.ACTION_REQUEST, 0);

    if (extra == Utils.GOODMORNING) {
        Notification notification = new Notification.Builder(this)
                .setContentTitle("title")
                .setContentText("content")
                .setSmallIcon(R.drawable.ic_launcher)
                .setAutoCancel(true)
                .build();

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(NOTIFICATION_SERVICE);

        notificationManager.notify(GOODMORNING_NOTIFICATION_REQUEST, notification);
    }
}

---

我面临的问题是在我运行 Utils.SetAlarm void 后通知立即出现。它也会在早上 7:00 显示正常，因此它显然可以正常工作，但我想知道是否有人知道避免此问题的方法。谢谢

Answer 1

在您运行 Utils.SetAlarm void 后，您面临的通知会立即出现。因为上午 7:00 可能已在您的设备中完成，因此它在那个时候似乎正在工作。因此请尝试在当前时间为第二天设置闹钟大于报警时间

试试这个

Calendar calendar = Calendar.getInstance();
    calendar.set(Calendar.HOUR_OF_DAY, hour);
    calendar.set(Calendar.MINUTE, minute);
    calendar.set(Calendar.SECOND, second);
long time=calendar.getTimeInMillis();

if(time<System.currentTimeMillis()){
    time=time+AlarmManager.INTERVAL_DAY;
}

alarmManager.setRepeating(AlarmManager.RTC_WAKEUP,time,
    AlarmManager.INTERVAL_DAY, alarmIntent);