Android Date Time picker in one dialog

Question

I am using material Date Time picker for my Android app. But I want to combine the Date and Time picker in one dialog.

<

Answer 1

Googled this problem and found usefull Enamul Haque's answer. Modified his code little bit and got this result. Its quick solution and will be improved, but works nice)

public class DateTimePicker {

    @NonNull
    private final Calendar calendar = Calendar.getInstance();
    @Nullable
    private DatePickerDialog datePickerDialog;
    @Nullable
    private TimePickerDialog timePickerDialog;
    @Nullable
    private ResultCallback dateResultCallback;

    public void showDialog(@NonNull Context context, long time) {
        calendar.setTimeInMillis(time);
        closeDialogs();
        showDatePicker(context);
    }

    @Nullable
    public ResultCallback getDateResultCallback() {
        return dateResultCallback;
    }

    public void setDateResultCallback(@Nullable ResultCallback dateResultCallback) {
        this.dateResultCallback = dateResultCallback;
    }

    public long getTime() {
        return calendar.getTimeInMillis();
    }

    private void closeDialogs() {
        if (datePickerDialog != null) {
            datePickerDialog.dismiss();
            datePickerDialog = null;
        }
        if (timePickerDialog != null) {
            timePickerDialog.dismiss();
            timePickerDialog = null;
        }
    }

    private DatePickerDialog.OnDateSetListener dateSetListener = new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int month, int dayOfMonth) {
            calendar.set(Calendar.YEAR, year);
            calendar.set(Calendar.MONTH, month);
            calendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            timePicker(view.getContext());
        }
    };

    private TimePickerDialog.OnTimeSetListener timeSetListener = new TimePickerDialog.OnTimeSetListener() {

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            calendar.set(Calendar.HOUR_OF_DAY, hourOfDay);
            calendar.set(Calendar.MINUTE, minute);
            if (dateResultCallback != null) {
                dateResultCallback.onResult(calendar.getTime());
            }
        }
    };

    private void showDatePicker(@NonNull Context context) {
        datePickerDialog = new DatePickerDialog(context,
                dateSetListener,
                calendar.get(Calendar.YEAR),
                calendar.get(Calendar.MONTH),
                calendar.get(Calendar.DAY_OF_MONTH));
        datePickerDialog.show();
    }

    private void timePicker(@NonNull Context context) {
        timePickerDialog = new TimePickerDialog(context,
                timeSetListener,
                calendar.get(Calendar.HOUR_OF_DAY),
                calendar.get(Calendar.MINUTE),
                true);
        timePickerDialog.show();
    }

    public void release() {
        closeDialogs();
        dateResultCallback = null;
    }

}

Dialogs calls via method showDialog(...), possible to release object when it not need anymore (in onDestroy() in activity f.e). And again - thanks Enamul Haque for idea.