Android - Get time after 2 hours

Question

In my Android app. I am running some Task every 2 hours.How can i check that the time has exceeded 2 hours.

I tried to use this but it says depreceated

Date date = new Date();
date.setHours(date.getHours() + 2);

I would appreciate the insight on how to implement this?

score 4 · Accepted Answer · answered Feb 15 '13 at 12:57

Check this link

http://www.dotnetexpertsforum.com/comparing-date-time-values-in-android-t1567.html

Calendar current_time = Calendar.getInstance ();
current_time.add(Calendar.YEAR, 0);
current_time.add(Calendar.DAY_OF_YEAR, 0);
current_time.set(Calendar.HOUR_OF_DAY, 
//Subtract 2 hours       
current_time.get(Calendar.HOUR_OF_DAY)-2);
current_time.set(Calendar.MINUTE, 0);
current_time.set(Calendar.SECOND, 0);

Calendar given_time = Calendar.getInstance ();
given_time.set(Calendar.YEAR, syear);
//Give the day sDay and hour shour
given_time.set(Calendar.DAY_OF_YEAR, sday);
given_time.set(Calendar.HOUR_OF_DAY, shour);
given_time.set(Calendar.MINUTE, 0 );
given_time.set(Calendar.SECOND, 0);

Date current_calendar = current_time.getTime();
Date given_calendar = given_time.getTime();

System.out.println("Current Calendar "+ current_calendar);
System.out.println("Given Calendar "+ given_calendar);

boolean v = current_calendar.after(given_calendar); 

if(v){

    return true;

}

score 3 · Answer 2 · answered Feb 15 '13 at 09:39

3

You should use the Calendar class.

Calendar calendar=Calendar.getInstance();
calendar.set(Calendar.HOUR_OF_DAY, calendar.get(Calendar.HOUR_OF_DAY)+2);
calendar.getTime();//your date +2 hours

answered Feb 15 '13 at 09:39

Ovidiu Latcu

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score 2 · Answer 3 · answered Feb 15 '13 at 09:38

2

use Calendar class :

    Calendar cal = Calendar.getInstance();
    System.out.println(cal.get(Calendar.HOUR)>(cal.get(Calendar.HOUR)+2));

answered Feb 15 '13 at 09:38

PermGenError

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score 0 · Answer 4 · edited May 23 '17 at 12:24

0

Date is deprecated. Use Calendar instead.

Source: Java: Why is the Date constructor deprecated, and what do I use instead?

edited May 23 '17 at 12:24

Community

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answered Feb 15 '13 at 09:38

geffchang

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score 0 · Answer 5 · answered Feb 15 '13 at 09:38

0

Two hours is 2 * 60 minutes, is 2 * 60 * 60 seconds and is 2 * 60 * 60 * 1000 milliseconds. So you can just add this number of milliseconds to your date:

Date date = new Date ();
Date after2Hours = new Date (date.getTime () + 2L * 60L * 60L * 1000L);

answered Feb 15 '13 at 09:38

Mikhail Vladimirov

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Use of Date() class is deprecated! – Pradeep Simha Feb 15 '13 at 09:39
@PradeepSimha Are you sure? Class Date is not marked as deprecated in my JDK (Oracle JDK 1.7.0_13 x64). – Mikhail Vladimirov Feb 15 '13 at 09:43
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Deprecated since ~10years? Eclipse with ADT wil mark it as deprecated. – r0- Feb 15 '13 at 09:44
Date class isn't deprecated, some behaviour of this class is deprecated after the introduction of Calender – PermGenError Feb 15 '13 at 09:49
Quote from the API : ` As of JDK 1.1, the Calendar class should be used to convert between dates and time fields and the DateFormat class should be used to format and parse date strings. The corresponding methods in Date are deprecated.` – PermGenError Feb 15 '13 at 09:50

score 0 · Answer 6 · edited Sep 10 '18 at 01:40

0

If you have to repeat that task every two hours, you should use Alarm manager service for that. See the link below for more details.

http://www.javacodegeeks.com/2012/09/android-alarmmanager-tutorial.html

edited Sep 10 '18 at 01:40

Pang

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answered Feb 15 '13 at 09:43

Varun

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Android - Get time after 2 hours

6 Answers6