Android: Setting time in time picker with the time shown in text view

Question

In my app, I am showing time in text view as 07:00 PM. On click of the text view, a time picker dialog pops up, In that time picker, I have to show exactly the same time as what is appearing in textview. But, I am not getting how to do that.

CODE

SimpleDateFormat sdf = new SimpleDateFormat("HH:mm a");
        //int hr = 0;
        Date date = null;
        try 
        {
            date = sdf.parse(resDateArray[3]);
        } 
        catch (ParseException e) {
            e.printStackTrace();
        }
        final Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);
        //tp is reference variable for time picker

        tp.setCurrentHour(calendar.get(Calendar.HOUR));
        tp.setCurrentMinute(calendar.get(Calendar.MINUTE));

        }//else

Vendace

refer this link mkyong.com/android/android-time-picker-example – Burgle

Answer 1

You should use a SimpleDateFormat to get a Date object from your String. Then just call

picker.setCurrentHour(date.getHours())

and

picker.setCurrentMinute(date.getMinutes())

Since the Date object is deprecated, you should use a Calendar instead of it. You can instantiate a Calendar this way:

Calendar c = Calendar.getInstance();
c.setTime(date);
picker.setCurrentHour(c.get(Calendar.HOUR_OF_DAY));
picker.setCurrentMinute(c.get(Calendat.MINUTE));

Edit: the complete code:

import java.util.Date;
import java.text.SimpleDateFormat; //Don't use "android.icu.text.SimpleDateFormat"
import java.text.ParseException; //Don't use "android.net.ParseException"

SimpleDateFormat sdf = new SimpleDateFormat("hh:mm");
Date date = null;
try {
    date = sdf.parse("07:00");
} catch (ParseException e) {
}
Calendar c = Calendar.getInstance();
c.setTime(date);

TimePicker picker = new TimePicker(getApplicationContext());
picker.setCurrentHour(c.get(Calendar.HOUR_OF_DAY));
picker.setCurrentMinute(c.get(Calendar.MINUTE));

Judkins

Did it, but time I am showing is PM. So, how can show the time in AM/PM? – Vendace

With the SimpleDateFormat, you can use a format String that allow for using "AM/PM" date format. Like : SimpleDateFormat sdf = new SimpleDateFormat("hh:ss a"); date = sdf.parse("07:00 AM"); Then use Calendar.HOUR instead of Calendat.HOUR_OF_DAY in order to get AM/PM hour format – Judkins

You should use "hh:mm a" instead of "HH:mm a" because "HH" represents the hour in day (0-23). Take a look at the doc below : docs.oracle.com/javase/1.4.2/docs/api/java/text/… – Judkins

Thanks, it solved my problem actually, I was doing it in wrong way. – Vendace

The setCurrent... methods are deprecated since API 23, use setHour & setMinute instead! – Hesitate

Answer 2

If anybody using the following format that is without using timepicker widget use this one..

mStartTime.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {
            new TimePickerDialog(AddAppointmentActivity.this, onStartTimeListener, calendar
                    .get(Calendar.HOUR), calendar.get(Calendar.MINUTE), false).show();

        }
    });

TimePickerDialog.OnTimeSetListener onStartTimeListener = new OnTimeSetListener() {

    public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
        String AM_PM;
        int am_pm;

        mStartTime.setText(hourOfDay + " : " + minute + "  " + AM_PM);
        calendar.set(Calendar.HOUR, hourOfDay);
        calendar.set(Calendar.MINUTE, minute);

    }
};

Thomson

AM_PM is not initialized. – Furthermost

@Furthermost see inside time listener ` String AM_PM;` – Thomson

Answer 3

I have created this helper function to get time

        public static void showTime(final Context context, final TextView textView) {

    final Calendar myCalendar = Calendar.getInstance();
    TimePickerDialog.OnTimeSetListener mTimeSetListener = new TimePickerDialog.OnTimeSetListener() {
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            String am_pm = "";
            myCalendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
            myCalendar.set(Calendar.MINUTE, minute);
            if (myCalendar.get(Calendar.AM_PM) == Calendar.AM)
                am_pm = "AM";
            else if (myCalendar.get(Calendar.AM_PM) == Calendar.PM)
                am_pm = "PM";
            String strHrsToShow = (myCalendar.get(Calendar.HOUR) == 0) ? "12" : myCalendar.get(Calendar.HOUR) + "";
            //UIHelper.showLongToastInCenter(context, strHrsToShow + ":" + myCalendar.get(Calendar.MINUTE) + " " + am_pm);
            textView.setText(strHrsToShow + ":" + myCalendar.get(Calendar.MINUTE) + " " + am_pm);
        }
    };
    new TimePickerDialog(context, mTimeSetListener, myCalendar.get(Calendar.HOUR), myCalendar.get(Calendar.MINUTE), false).show();
}

and How to get current time in required format, I use following code. // PARAM Date is date of time you want to format // PARAM currentFormat of date // PARAM requiredFormat of date

    public static String getFormattedDate(String date, String currentFormate, String requiredFormate) {
    //SimpleDateFormat formatActual = new SimpleDateFormat("yyyy - MM - dd");
    if (date != null) {
        SimpleDateFormat formatActual = new SimpleDateFormat(currentFormate);
        Date dateA = null;
        try {
            dateA = formatActual.parse(date);
            System.out.println(dateA);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        //SimpleDateFormat formatter = new SimpleDateFormat("dd MMM, yyyy");
        SimpleDateFormat formatter = new SimpleDateFormat(requiredFormate);
        String format = formatter.format(dateA);
        System.out.println(format);
        return format;
    } else {
        return "";
    }

}

usage of getFormattedDate is:

       String date = getFormattedDate(dateYouWantToFormate,"hh:mm a","hh:mm");

Physiological

if i want to set time in hh:mm format then what changes is needed? – Icelander

I have edit the answer so you can get in your required format – Physiological

Answer 4

If you're using the TimePicker nowdays its probably best to check the Build Version as the setCurrentHour and setCurrentMinute has been deprecated.

SimpleDateFormat sdf = new SimpleDateFormat("hh:ss");
Date date = null;
try {
    date = sdf.parse("07:00");
} catch (ParseException e) {
}
Calendar c = Calendar.getInstance();
c.setTime(date);

TimePicker timePicker = new TimePicker(getApplicationContext());

if (Build.VERSION.SDK_INT >= 23) {
    timePicker.setHour(calculateHours());
    timePicker.setMinute(calculateMinutes());
}
else {
    timePicker.setCurrentHour(calculateHours());
    timePicker.setCurrentMinute(calculateMinutes());
}

Rebatement

Do you think there is a better way to handle this check? Running this if-else check for every time picker in the app can be tedious – Earthlight

You could create your own TimePicker class with set hours and minutes methods, then have the class itself handle the logic and assigned the correct one accordingly, another similar option could be extension methods – Rebatement

Yeah that would work fine. I tried the extension but it seems android studio still produces a warning because it references deprecated code. I guess android studio isn't smart enough to understand we are handling this properly? – Earthlight

@Earthlight Another weird thing is that the deprecated functions call the new functions, so it makes this check seem redundant. It's really unclear how we should handle it. – Cowgill

Answer 5

One important point has to be kept in mind while retrieving time in onTimeSet() function, there is no special function to set AM_PM in the calendar instance. When we set the time AM_PM is automatically set accordingly like if AM was selected while choosing hour and minute then <calendarVariable>.get(Calendar.AM_PM) will return 0 and in opposite case (in case of PM) it will return 1.

Collative

Answer 6

Some changes after sdk version 23;

            SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
            Date date = null;
            try {
                date = sdf.parse("12:02:32");
            } catch (ParseException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            if(date != null) {
                Calendar c = Calendar.getInstance();
                c.setTime(date);
                sleepTimeStartPicker.setHour(c.get(Calendar.HOUR_OF_DAY));
                sleepTimeStartPicker.setMinute(c.get(Calendar.MINUTE));
            }

Losse

Answer 7

For AM/PM you have to implement a logic for that and that is as below.. so you can get the output as you mentioned ... just try below code...

int hr=tp.getCurrentHour();
String a="AM";
if(hr>=12){
    hr=hr-12;
    a="PM";
}
String tm=hr+":"+tp.getCurrentMinute()+" "+a;

Toast.makeText(MainActivity.this, tm, 500).show();

Handspring

But, how can I add AM/PM in time picker – Vendace

It's depends on the "Settings"... In the setting go to the Date and Time... after that there is a option "Use 24-hours format"... uncheck it and restart the mobile and reinstall the app... – Handspring