通知忽略警报设置并立即启动

Question

我正在尝试在特定时间弹出通知，但由于我设置了闹钟，它立即开始忽略给定时间

public class ShowTaskNotificationService extends IntentService {
private Long date_days;
private Long date_time;
public ShowTaskNotificationService() {
super("ShowTaskNotificationService");
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
date_days = intent.getLongExtra("Date_days",-1);
date_time = intent.getLongExtra("Date_time",-1);
return super.onStartCommand(intent, flags, startId);
}
@Override
protected void onHandleIntent(Intent intent) {
startAlarm();
}
private void startAlarm()
{
int year,month,day,hour,minute;
AlarmManager alarm = (AlarmManager)getSystemService(Context.ALARM_SERVICE);
Calendar calendar_days = Calendar.getInstance();
calendar_days.setTimeInMillis(date_days);
Calendar calendar_time = Calendar.getInstance();
calendar_time.setTimeInMillis(date_time);

year   = calendar_days.get(Calendar.YEAR);
month  = calendar_days.get(Calendar.MONTH);
day    = calendar_days.get(Calendar.DAY_OF_MONTH);
hour   = calendar_time.get(Calendar.HOUR_OF_DAY);
minute = calendar_time.get(Calendar.MINUTE);
//Date date = new Date();
Calendar cal_alarm = Calendar.getInstance();
cal_alarm.setTimeInMillis(System.currentTimeMillis());
//cal_alarm.clear();
//cal_alarm.setTime(date);
cal_alarm.set(Calendar.YEAR,year);
cal_alarm.set(Calendar.MONTH,month);
cal_alarm.set(Calendar.DAY_OF_MONTH,day);
cal_alarm.set(Calendar.HOUR_OF_DAY,hour);
cal_alarm.set(Calendar.MINUTE,minute);

Intent intent = new Intent(this,AlarmReceiver.class);
intent.putExtra("cal_alarm",cal_alarm.getTimeInMillis());
PendingIntent pendingIntent = PendingIntent.getBroadcast(this,0,intent,0);
alarm.set(AlarmManager.RTC_WAKEUP,cal_alarm.getTimeInMillis(),pendingIntent);

}

}

公共类 AlarmReceiver 扩展 BroadcastReceiver { 私有静态字符串CHANNEL_ID = "taskNoti";

@Override
public void onReceive(Context context, Intent intent) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = "channel name";
String description = "channel description";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
channel.setDescription(description);
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, CHANNEL_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Task time")
.setContentText("aaa")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(12344, mBuilder.build());
mBuilder.build();
}

}

public class AlarmReceiver extends BroadcastReceiver {
private static String CHANNEL_ID = "taskNoti";
@Override
public void onReceive(Context context, Intent intent) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = "channel name";
String description = "channel description";
int importance = NotificationManager.IMPORTANCE_DEFAULT;
NotificationChannel channel = new NotificationChannel(CHANNEL_ID, name, importance);
channel.setDescription(description);
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context, CHANNEL_ID)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Task time")
.setContentText("aaa")
.setPriority(NotificationCompat.PRIORITY_DEFAULT);
NotificationManagerCompat notificationManager = NotificationManagerCompat.from(context);
notificationManager.notify(12344, mBuilder.build());
mBuilder.build();
}

}

我从另一个片段中获取时间，并将其传递给ShowTaskNotificationService类，然后将其作为长变量(date_days，date_time(获取

Answer 1

您要设置的时间是什么？
如此处所述，如果您指定的触发时间是过去，则警报会立即触发。这就是你的情况。由于您指定的时间与cal_alarm中的当前时间相同。
选择您希望闹钟响起的时间。 像这样：

// Set the alarm to start at approximately 2:00 p.m.  
Calendar calendar = Calendar.getInstance();  
calendar.setTimeInMillis(System.currentTimeMillis());  
calendar.set(Calendar.HOUR_OF_DAY, 14);    
// Set the alarm to start at 8:30 a.m.  
Calendar calendar = Calendar.getInstance();  
calendar.setTimeInMillis(System.currentTimeMillis());  
calendar.set(Calendar.HOUR_OF_DAY, 8);