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POTrouble with converting milliseconds to hours and minutes
 

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  1. POTrouble with converting milliseconds to hours and minutes
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    <p>Hi everyone , I am working on an app that has an alarm clock. When the user sets the alarm , the app should tell the user how long till the alarm goes off. </p> <p>I am using simpleDateFormater to get the the milliseconds into the right format. The alarm goes off correctly at the set time , but in the formatted time i am always getting an extra 11 hours.</p> <p>FOr example. if the time now is 1:00 am and I am setting the alarm for 1:10 am . I get the message saying the alarm is set for 11 hrs and 10 mins instead of just 10 minutes.The alarm goes off correctly at 1:10 am. </p> <p>I am attaching the relevant code , let me know if you need to see any more of the code.</p> <pre><code>long current = System.currentTimeMillis(); long time_left = set_time-current; // set_time is the time the alarm should go off , and it is set else where in the activity. String datePattern = "h ' hours and' mm ' minutes'"; SimpleDateFormat formatter = new SimpleDateFormat(datePattern); String timeLeft_string = formatter.format(time_left); Toast.makeText(getBaseContext(), "Alarm set for"+timeLeft_string, Toast.LENGTH_SHORT).show(); Intent intent = new Intent(getBaseContext(), AlarmReceiver.class); intent.putExtra("id", mRowId); PendingIntent pendingIntent = PendingIntent.getBroadcast(getBaseContext(), mRowId_int, intent, 0); AlarmManager alarmManager = (AlarmManager)getSystemService(Context.ALARM_SERVICE); alarmManager.set(AlarmManager.RTC_WAKEUP, set_time, pendingIntent); </code></pre> <p>Here are my questions : 1. where is the 11 hours coming from ? 2. how do I get rid of it ?</p> <p>Thanks for taking the time to read this and for any help that you can give.</p>
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    1. USDrkStr
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    1. COI've had a lot of trouble working with milliseconds and I have always found nano seconds more reliable in Android. Have you tried using System.nanoTime() as opposed to System.currentTimeMillis()?
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      1. USKent Hawkings
 

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