AlarmManager立即触发警报

Question

Intent myIntent = new Intent(Alarm.this, Automaton.class);
                  myIntent.putExtra("methodName", "myMethod");
                  myIntent.putExtra("hour", tp.getCurrentHour().toString());
                  myIntent.putExtra("minute", tp.getCurrentMinute().toString());
                  hour = tp.getCurrentHour();
                  minute = tp.getCurrentMinute();
                  PendingIntent pendingIntent = PendingIntent.getActivity(Alarm.this, 0, myIntent,PendingIntent.FLAG_UPDATE_CURRENT);
                  AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
                       Calendar calendar = Calendar.getInstance();
                       calendar.set(calendar.HOUR_OF_DAY, hour);
                       calendar.set(calendar.MINUTE, minute);
                       calendar.set(calendar.SECOND, 0); 
                       alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 86400000, pendingIntent);

Above is my code. Here is my problem; I have a method in another Activity that I want to run at a specified time. If the user selects a time that HASN'T passed yet in the day (say you set the alarm at 10AM for 11AM, it will work fine). However, if you set the alarm for 9AM at 10AM, it will instantly fire the Pending Intent. Not sure where I am going wrong. Any help would be appreciated!

Answer 1

You might need to check whether the set time is less than the current time . If the set time is less than current time, don't set an alarm for it. Because it's useless even if you keep it when the time has already passed.

Answer 2

您可以使用日历实例并将日期设置为第二天，并将其与警报一起使用。

Answer 3

To what @shreyas said, you need to do the check yourself if you need to bump the day.

Example.. If they select 5:00PM (HOUR_OF_DAY = 17) compare that to current time. If that time (17) is less that the current time, then add a day to your calendar instance.

 int dayOfWeek = calendar.get(Calendar.DAY_OF_WEEK); calendar.set(calendar.DAY_OF_WEEK, dayOfWeek + 1);