How to set TimePicker show with format 24h

Question

I\'ve created a TimePicker in layout and I want it to show time with format 24h.

Can you help me? Thanks.

Answer 1

By default, it displays time in the AM/PM format. If you want to change time in the 24 hour format, then you can use the setIs24HourView() method. See this link: http://www.androidaspect.com/2012/06/timepicker-view-tutorial.html

Answer 2

Setting TimePicker by default to 24 hour mode is not always a good idea since many countrys have diffrent convention. For this case use DateFormat.is24HourFormat(getActivity()).

Your final code migth look like picker.setIs24HourView(DateFormat.is24HourFormat(this));.

Further details see:

• http://developer.android.com/guide/topics/ui/controls/pickers.html
• http://developer.android.com/reference/android/widget/TimePicker.html
• http://developer.android.com/reference/android/text/format/DateFormat.html

Answer 3

For Time picker Dialog

Timepicker dialog provides by android to select the time.

Java provides default functionality by passing is24HourView == true in TimePickerDialog constructor.

public TimePickerDialog(Context context, OnTimeSetListener listener, int hourOfDay, int minute,boolean is24HourView) {
        this(context, 0, listener, hourOfDay, minute, is24HourView);
    }

Pass true for 24 hours or pass false to set time picker dialog in AM-PM format.

for ex: (Kotlin)

 private fun showTimePicker() {
        val cal = Calendar.getInstance()
        val dialog = TimePickerDialog(this, TimePickerDialog.OnTimeSetListener { view, hourOfDay, minute ->
            Log.e("Time :","$hourOfDay:$minute")
        }, cal.get(Calendar.HOUR_OF_DAY), cal.get(Calendar.MINUTE), true) //here pass true for 24hrs view else false for AM-PM(12hrs view)
        dialog.show()
    }

Answer 4

Or you let the user decide for himself which format he want to use.

In your MainActivty:

DialogFragment timePicker = new TimePickerFragment();
timePicker.show(getSupportFragmentManager(), "time picker");


   @Override
public void onTimeSet(TimePicker view, int hourOfDay, int minute) {

            TextView outputText= (TextView)findViewById(R.id.outputText);
            outputText.setText(hourOfDay + " : "+ minute);
}

And in a new Java Class (TimePickerFragment):

public class TimePickerFragment extends DialogFragment {

@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {

    Calendar c = Calendar.getInstance();
    int hour = c.get(Calendar.HOUR_OF_DAY);
    int minute = c.get(Calendar.MINUTE);



    return new TimePickerDialog(getActivity(),(TimePickerDialog.OnTimeSetListener) getActivity(), hour, minute, android.text.format.DateFormat.is24HourFormat(getActivity()));

}}

Answer 5

I need the same just for an application to set the duration spend for doing a task. I found that I just need to extend the TimePickerDialog class and pass True in the last constructor parameter boolean is24HourView.

public class DurationPickerDialog extends TimePickerDialog {

public DurationPickerDialog(Context context, TimePickerDialog.OnTimeSetListener callBack, int hourOfDay, int minute){
    super(context, callBack, hourOfDay, minute, true);
}

Then you only need to create this as

TimePickerDialog durationPicker =  new DurationPickerDialog(getActivity(), this, hour, minute);
durationPicker.setTitle("Duration:");