When i press the button to display the DatePickerDialog, the dialog displays one month greater. For instance, if i initiate with the current date like this(with the DateTime of joda library):
DateTimeZone zone = DateTimeZone.forID("Europe/Athens");
DateTime dt = new DateTime(zone);
int year = dt.getYear();
int month = dt.getMonthOfYear();
int day = dt.getDayOfMonth();
which is 07/08/2014, the date dialog displays one month greater 07/09/2014.
I do not understand why this happens.
The fragment which represents the datePickerFragment is:
#SuppressLint("ValidFragment")
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener{
#SuppressLint("ValidFragment")
TextView txtDate;
GlobalData appState;
public DatePickerFragment(TextView txtDate) {
super();
this.txtDate = txtDate;
}
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
DateTimeZone zone = DateTimeZone.forID("Europe/Athens");
DateTime dt = new DateTime(zone);
int year = dt.getYear();
int month = dt.getMonthOfYear();
int day = dt.getDayOfMonth();
Log.i("DatePickerFragment day month year", day +" "+ month + " "+ year + "");
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
public void onDateSet(DatePicker view, int year, int month, int day) {
appState.setDateUserFrom(year, month, day);
Log.i("Date day month yerar", "Date changed." + day+" " + month + " " +year);
txtDate.setText(new StringBuilder().append(day)
.append("-").append(month).append("-").append(year)
.append(" "));
}
}
DatePickerDialog takes monthOfYear that is 0 to 11 [0 for Jan... 11 for Dec], and your DateTime returns 1 to 12. So you need to do -1 with month value.
Use this:
return new DatePickerDialog(getActivity(), this, year, month - 1, day);
public Dialog onCreateDialog(Bundle savedInstanceState) {
// Use the current date as the default date in the picker
DateTimeZone zone = DateTimeZone.forID("Europe/Athens");
DateTime dt = new DateTime(zone);
int year = dt.getYear();
int month = dt.getMonthOfYear()-1;
int day = dt.getDayOfMonth();
Log.i("DatePickerFragment day month year", day +" "+ month + " "+ year + "");
// Create a new instance of DatePickerDialog and return it
return new DatePickerDialog(getActivity(), this, year, month, day);
}
Month in date picker starts with zero. So you should subtract one from the getMonthOfYear() to set it on datepicker.
I am pretty sure the reason behind this is because the Android DatePickerDialog expects 0 based month values. Jodatime return them as you would expect it (more human friendly). So just subtract 1 from the month.
Just to clarify, most date functions/libraries are designed with 0 based month values by default. The exception is where explicitly noted, or third party libraries like Jodatime, which make working with date stuff a joy.
Just a guess. Joda month starts at 1 for january but java date at 0? So if you use the current date init with joda the date picker will show the wrong month. Easy solution:
month = dt.getMonthOfYear() - 1;
Try this hope it's worked:
DateTimeZone zone = DateTimeZone.forID("Europe/Athens");
DateTime dt = new DateTime(zone);
int year = dt.getYear();
int month = dt.getMonth();
int day = dt.getDayOfMonth();
OR
DateTimeZone zone = DateTimeZone.forID("Europe/Athens");
DateTime dt = new DateTime(zone);
int year = dt.getYear();
int month = dt.getMonthOfYear() - 1;
int day = dt.getDayOfMonth();
Related
I have a date picker dialog, using which user can select a date. Conditions are :
Date must not be greater than today (system date)
Date must not be older than 3 months
I have done the first bit but I am not sure how to compare two dates to check if it is older than 3 months.
in the code : checkInYear, checkInMonth and checkInDay is what user selected and year, month, day is the system date.
Could you please suggest how to compare two dates to check if it is greater than 3 months.
Your help is much appreciated.
#Override
public void onDateChanged(DatePicker view, int selectedYear,
int selectedMonthOfYear, int selectedDayOfMonth) {
setCurrentDateOnView();
int checkInYear = selectedYear;
int checkInMonth = selectedMonthOfYear;
int checkInDay = selectedDayOfMonth;
if (checkInYear > year || checkInYear < year) {
view.updateDate(year, month, day);
}
if (checkInMonth > month && checkInYear == year) {
view.updateDate(year, month, day);
}
if (checkInDay > day && checkInYear == year
&& checkInMonth == month) {
view.updateDate(year, month, day);
}
}
};
Thank you very much
Just use according to your need.
String sDate = "05-10-2012"; // suppose you create this type of date as string then
SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
Date date = sdf.parse(sDate);
Calendar c = Calendar.getInstance();
c.getTime().compareTo(date);
it depending on your string or how you can get? you can get all individually from datepicker then directly set in calendar instance
Calendar my = Calendar.getInstance();
my.set(year, month, day);
now compare
my.compareTo(Calendar.getInstance());
and for less then 3 months you can use something like ..
Date referenceDate = new Date();
Calendar c = Calendar.getInstance();
c.setTime(referenceDate);
c.add(Calendar.MONTH, -3);
return c.getTime();
On one of my app I'm using datepicker class to retrieve data form archive.
I need to set **Max and Min **. On DatePicker.Dialog,
i was able to set **Max to the current time ** however, i counted do for **Min **. if someone to help me i really appreciate it. thanks in advance!
I am looking set setMaxDate = to current year
and setMinDate = two years back from current year(current year -2)
NB: I triad to look if this question was already answered. But, i couldn't get one. all that i see is minData = current timedialog.getDatePicker().setMinDate(new Date().getTime()); which I am not looking for that. i want to set it to different year than the current.
here below part of my code:
// On Clike for Floting button with + signe
#Override
public void onClick(View v) {
switch (v.getId()) {
case imageButtonCalendar:
Calendar c = Calendar.getInstance();
final int[] mYear = {c.get(Calendar.YEAR)};
final int[] mMonth = {c.get(Calendar.MONTH)};
final int[] mDay = {c.get(Calendar.DAY_OF_MONTH)};
DatePickerDialog.OnDateSetListener pDateSetListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
mYear[0] = year;
mMonth[0] = monthOfYear;
mDay[0] = dayOfMonth;
et.setText(new StringBuilder()
// to set date in editext
.append(mDay[0]).append("/").append(mMonth[0] + 1)
.append("/").append(mYear[0]).append(" "));
}
};
DatePickerDialog dialog = new DatePickerDialog(getActivity(), pDateSetListener, mYear[0], mMonth[0], mDay[0]);
dialog.getDatePicker().setMaxDate(new Date().getTime());
dialog.getDatePicker().setMinDate(new Date().getTime(),-year);
dialog.show();
break;
You can use Calendar class :
Calendar cal = Calendar.getInstance()
cal.add(Calendar.DATE, -7);
System.out.println("Date = "+ cal.getTime());
Joda-time is the best Java library for Date.
Get the date after subtracting 2 years :
Calendar calendar = Calendar.getInstance();
calendar.add(Calendar.YEAR, -2);
dialog.getDatePicker().setMinDate(calendar.getTime()); // set min date
I have 3 strings containing day, month and year values. For example:
String mday = "02";
String mmonth="07";
String myear="2013";
I need to set the DatePicker in my activity to a month from the date above. I do not mean just add 1 to the mmonth value... in case of day 31 I would end up with an invalid date.
So I need some way to increment the date (the valid way) and set the DatePicker with it's value.
I am aware that setting the datePicker with Int values is done like this:
DatePicker datepicker = (DatePicker) findViewById(R.id.datePicker1);
datepicker.init(iYear, iMonth, iDay, null);
// where iYear,iMonth and iDay are integers
But how do I obtain the integer values of day,month and year of an incremented DATE by one month?
So between the first values (strings) and final values of incremented date(integers) what are the steps that I must make?
I assume I would have to use a Calendar.
So my code should look like this:
Integer iYear, iMonth, iDay = 0;
String mday = "02";
String mmonth="07";
String myear="2013";
Calendar cal = Calendar.getInstance();
cal.set(Integer.parseInt(myear), Integer.parseInt(mmonth), Integer.parseInt(mday));
cal.add(Calendar.MONTH, 1);
// here I should get the values from cal inside the iYear, iMonth, iDay, but I do not seem to succeed.
DatePicker datepicker = (DatePicker) findViewById(R.id.datePicker1);
datepicker.init(iYear, iMonth, iDay, null);
if I do:
datepicker.init(cal.YEAR, cal.MONTH, cal.DATE, null);
then application crashes.
What should I do?
How to set this incremented by a month date into my DatePicker?
UPDATE
I changed my test code to this:
Calendar cal = Calendar.getInstance();
cal.set(2013, 05, 23);
cal.add(Calendar.MONTH, 1);
int xxday = cal.get(Calendar.DATE);
int xxmonth = cal.get(Calendar.MONTH);
int xxyear = cal.get(Calendar.YEAR);
datepicker.init(xxyear, xxmonth, xxday, null);
but Now the datePicker is set to one month from NOW instead of one month from the wanted date So instead of (2013-06-23) I have (2013-09-23). I assume it's because of
int xxmonth = cal.get(Calendar.MONTH);
how can I get the real month from a Calendar cal; ?
DatePicker class has a method updateDate(year, month, dayOfMonth) which you can use to set a date in your DatePicker as shown below:
DatePicker datePicker = (DatePicker) findViewById(R.id.datePicker1);
datePicker.updateDate(2016, 5, 22);
Calendar month is 0 based. So month 07 is August.
Use the following code to initialize the calendar object if you have a date picker:
Calendar calendar = new GregorianCalendar(datePicker.getYear(),
datePicker.getMonth(),
datePicker.getDayOfMonth());
Else hard-code the date parts in the constructor
use this tuto to create your DatePickerDialog then use this code inside DatePickerDialog
https://developer.android.com/guide/topics/ui/dialogs.html
#Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
String mday = "02";
String mmonth="07";
String myear="2013";
//convert them to int
int mDay=Integer.valueOf(mday);
int mMonth=Integer.valueOf(mmonth);
int mYear=Integer.valueOf(myear);
return new DatePickerDialog(getActivity(), new DatePickerDialog.OnDateSetListener() {
#Override
public void onDateSet(DatePicker datePicker, int i, int i1, int i2) {
String d=convertToCompletDate(i2,i1,i);
mListener.onDatePicked(d);
}
},mYear,mMonth,mDay);
}
In Kotlin
Assuming your date is a string. i.e:
var defaultDate = "20/4/2022"
you could use
val datePicker = findViewById<DatePicker>(R.id.date_Picker)
var defaultDate = eventDate.toString().split(Regex("/"))
var dd = defaultDate[0].toInt()
var mm = defaultDate[1].toInt()
var yy = defaultDate[2].toInt()
datePicker.updateDate(yy,mm,dd)
I'd like to get day, month and year values for save to db. These are my codes:
Declaretions:
private TextView tv_purchase_date;
private Button mPickDate;
private int mYear;
private int mMonth;
private int mDay;
OnClickListener listener_show_dlg = null;
OnDateSetListener listener_mdate_display = null;
Event Code:
listener_show_dlg = new OnClickListener() {
public void onClick(View v) {
Calendar cal=Calendar.getInstance();
DatePickerDialog datePickDlg = new DatePickerDialog(
ItemsAddActivity.this,
listener_mdate_display,
cal.get(Calendar.YEAR),
cal.get(Calendar.MONTH),
cal.get(Calendar.DAY_OF_MONTH)
);
datePickDlg.show();
};
};
listener_mdate_display = new OnDateSetListener() {
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
mMonth = month;
mYear = year;
mDay = dayofMonth;
tv_purchase_date.setText(dayOfMonth + "/" + monthOfYear + "/" + year);
}
};
}
I try to store mMonth, mYear and mDay values in db. What is the best store type? as integer or as string??
I store in the DB one number that represents the date. It is the number of seconds that have passed since the beginning of the modern era (Jan 1, 1970.) From the Date Picker, you can get the M D Y values like this:
datePickerListener = new DatePickerDialog.OnDateSetListener() {
public void onDateSet(DatePicker view, int yearOfYear,
int monthOfYear, int dayOfMonth) {
// the user has picked these values
year = yearOfYear;
month = monthOfYear;
day = dayOfMonth;
Then, I turn these into a single Date object like this.
Calendar cal = new GregorianCalendar(year, month, day);
Date dateOfGames = cal.getTime();
DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);
String cs = df.format(dateOfGames);
changeDateButton.setText(cs); // update the interface
}
};
before I put it in the DB, I turn it into a numebr of seconds like this:
long seconds = date.getTime() / 1000; // this is the date in seconds since the start of the epoch
....
when I take that single number of seconds out of the DB, and want it to be a Date object again, I do this:
date = new Date(seconds * 1000); // converting seconds to a Date object
You can use a DateFormat object to display the date object how you like to see it.
I know this is awkward. Since SQLite doesn't allow you to store a Date, the answer is going to be awkward. Perhaps there is a cleaner way than this, and others will recommned something. :)
I struggled with this issue for a while. I don't konw of anything better than this.
I stored the date in the DB as a single long int. It is pretty easy to convert your Date to the number of seconds since the epoch (Jan 1, 1970), and it is also easy to convert the number of seconds into a Date object.
You need to be careful with seconds and milliseconds.
date = new Date(seconds * 1000); // converting seconds to a Date
seconds = date.getTime() / 1000; // this is the date in seconds since the start of the epoch
// Use Greg calendar to get a Date object from day, month, year
Date dateOfGames = new GregorianCalendar(year, month, day).getTime();
Does that help at all?
I created sqllite table with this sql string:
create table items (id INTEGER PRIMARY KEY AUTOINCREMENT, pdate DATE)
I writed some methods to convert date:
public String date_to_str(Date date) {
String pattern = "dd.MM.yyyy";
SimpleDateFormat dateFormat = new SimpleDateFormat(pattern);
Log.d(_watcher_name, "date_to_str" + dateFormat.format(date));
return dateFormat.format(date);
}
public Date mdy_to_date (int day, int month, int year) {
Calendar cal = new GregorianCalendar(year, month, day);
return cal.getTime();
}
I am wanting to create a gestation period calculator for my app. I want to grab the date that the user had picked in the date time picker and advance that date by 9 months and 10 days and print it out in a textView. I am able to get the date from the date picker and print the date into the textView but what I need to do now is to advance the date by the 9 months and 10 days. Any ideas? and here is my current code for getting the date from the date picker and printing it to a text view.
public class GestationPeriod extends Activity {
DatePicker date;
TextView gestationperiodView;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.gestationperiod);
setupVariables();
}
public void calculate(View v){
int gestationPeriodMonth = 9;
int gestationPeriodDay = 10;
int year = date.getYear();
int month = date.getMonth();
int day = date.getDayOfMonth();
gestationperiodView.setText("" + day + " / " + month + " / " + year);
}
private void setupVariables(){
date = (DatePicker) findViewById(R.id.datePicker1);
gestationperiodView = (TextView) findViewById(R.id.editText1);
}
Your help would be much appreciated.
Use java.util.Calendar.add(int field, int amount). After getting the day, month, and year, and before gestationperiodView.setText, insert:
Calendar c = new Calendar();
c.set(year, month-1, day);
c.add(Calendar.DAY_OF_MONTH, gestationPeriodDay);
c.add(Calendar.MONTH, gestationPeriodMonth);
day = c.get(Calendar.DAY_OF_MONTH);
month = c.get(Calendar.MONTH) + 1;
year = c.get(Calendar.YEAR);