Android: Get system time and schedule a task

Question

I have been trying to figure out how to get the current time in android and I would like to figure how to run a segment of code when the clock hits a certain time. Ultimately what I am trying to do is when the clock is 9:30 pm. Do something or run a piece of code. I have never dealt with time before on android or java.

Does your application will be running as service or you need to start @ 9:30? — Libin, Apr 16 '14 at 18:46

score 0 · Answer 1 · edited May 23 '17 at 12:27

0

There are various ways you can get the current time in Android such as

Date currentDate = new Date(System.currentTimeMillis());

Regarding running code at a certain time, check out AlarmManager which allows you to schedule a run for your application.

Also, check out Alarm Manager Example

edited May 23 '17 at 12:27

Community

1
1

answered Apr 16 '14 at 18:30

AmmarCSE

30,079
5
45
53

score 0 · Answer 2 · answered Apr 16 '14 at 18:35

0

There's some things you need to consider when using AlarmManager especially when your device is asleep (acquire a lock, and keep it until your task is completed). I suggest you read that.

answered Apr 16 '14 at 18:35

mbmc

5,024
5
25
53

score 0 · Answer 3 · edited May 23 '17 at 12:11

0

try this:

get the current system time as below:

long currentTime = System.currentTimeMillis();

and set task for future time as below:

Calendar cal = Calendar.getInstance();
cal.add(Calendar.SECOND, 10);
Intent serviceIntent = new Intent(this, GPSTrackerService.class);
PendingIntent pintent = PendingIntent.getService(this, 0, serviceIntent, 0);
AlarmManager alarm = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
//every 2 min
alarm.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),timeSlice, pintent);

for more description refer below link:

How to set an alarm to fire properly at fixed time?

edited May 23 '17 at 12:11

Community

1
1

answered Apr 16 '14 at 18:43

MohdTausif

498
4
13

How would I apply this, I just want to check if the time is 9:30pm or not? – RedShirt Apr 16 '14 at 20:33
please check this http://stackoverflow.com/questions/2992882/how-to-set-an-alarm-to-fire-properly-at-fixed-time – MohdTausif Apr 17 '14 at 06:26

Android: Get system time and schedule a task

3 Answers3