CODEWITHSUNDEEP
androidclasscalendar
cj1098
cj1098

Reputation: 1610

Using calendar to determine AM or PM dates

Using the calendar class to determine AM or PM times. 

            Calendar c = Calendar.getInstance(); 
            int seconds = c.get(Calendar.SECOND);
            int minutes = c.get(Calendar.MINUTE);
            int hours = c.get(Calendar.HOUR);
            int years = c.get(Calendar.YEAR);
            int months = 1 + c.get(Calendar.MONTH);
            int days = c.get(Calendar.DAY_OF_MONTH);
            int AM_orPM = c.get(Calendar.AM_PM);

            try{
                if (hours < 12)
                {
                    String PM = "";
                    if (AM_orPM == 1)
                    {
                        PM = "PM";
                    }
                    timestamp.setText("Refreshed on " + months + "-"
                    + days + "-" + years + " " +  hours + ":" + minutes + ":" + seconds + " " + PM);
                    timestamp.setTextSize(17f);
                    timestamp.setTextColor(Color.GREEN);
                }
                else if (hours > 12)
                {
                    String AM = "";
                    if (AM_orPM == 0)
                    {
                        AM = "AM";
                    }
                    hours = hours - 12;
                    timestamp.setText("Refreshed on " + years + "-"
                    + months + "-" + days + " " +  hours + ":" + minutes + ":" + seconds + AM);
                    timestamp.setTextSize(17f);
                    timestamp.setTextColor(Color.GREEN);
                }
            }
            catch (Exception e){}

I want to set the time to AM or PM depending on the current time. also for some reason the Calendar.MONTH value doesn't give me the correct month. It's off by one so thats why I had to add 1. Just wondering if thats normal?

int months = 1 + c.get(Calendar.MONTH);

Upvotes: 11

Views: 27431

Answers (4)

Jorgesys
Jorgesys

Reputation: 126503

I tried this, but it doesn´t work. I have to obtain the AM_PM value and then make the comparison:

int AM_PM = c.get(Calendar.AM_PM);
if(AM_PM == Calendar.AM){
...
...

It was solution:

   Calendar c = Calendar.getInstance();
    int AM_PM = c.get(Calendar.AM_PM);

    if(AM_PM == Calendar.AM){
       //AM
    }else{
       //PM
    }

Upvotes: 0

Linh
Linh

Reputation: 60943

Simply check calendar.get(Calendar.AM_PM) == Calendar.AM

Calendar now = Calendar.getInstance();
if(now.get(Calendar.AM_PM) == Calendar.AM){
   // AM
}else{
   // PM
}

Upvotes: 7

PeteH
PeteH

Reputation: 1930

Determining AM vs. PM is a straightforward calculation based on hour. Here's the code:

String timeString="";
int hour = Calendar.getInstance().get(Calendar.HOUR_OF_DAY);
if (hour == 0) {
    timeString =  "12AM (Midnight)";  
} else if (hour < 12) {
    timeString = hour +"AM";
} else if (hour == 12) {
    timeString = "12PM (Noon)";
} else {
    timeString = hour-12 +"PM";
}

Upvotes: 5

Andrei Sfat
Andrei Sfat

Reputation: 8606

It is normal. Because the index of the Calendar.MONTH starts from 0. So that why you need +1 to get the correct Month.

Upvotes: 9

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