Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
185 views
in Technique[技术] by (71.8m points)

Set Limit on the DatePickerDialog in Android?

How to limit on DatePickerDialog to choose a date from 2-12 years in the past or from 0-2 years from the current date?

I have DatePickerDialog in activity which is used for getting the date of birth for child and infant. Child age will be (2-12yrs) and infant age can be (0-2ys). If I pass 1 then the age limit should be (2-12yrs) and if I pass 2 the age limit should be (0-2yrs).

What could I do to get this functionality in my calendar?

My Calender code is:

date = new DatePickerDialog.OnDateSetListener() {

            @Override
            public void onDateSet(DatePicker view, int year, int monthOfYear,
                    int dayOfMonth) {
                // TODO Auto-generated method stub
                myCalendar.set(Calendar.YEAR, year);
                myCalendar.set(Calendar.MONTH, monthOfYear);
                myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
                String myFormat = "dd/MM/yy"; //In which you need put here
                SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
                dateofBirth.setText(sdf.format(myCalendar.getTime()));
            }
        };

dateofBirth.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                showDialog(DATE_DIALOG_ID);

            }
        });

public Dialog onCreateDialog(int id) {
    final Calendar now = Calendar.getInstance();

    switch (id) {
    case DATE_DIALOG_ID:
        // set date picker as current date
        DatePickerDialog _date =   new DatePickerDialog(this, date,myCalendar
                .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),
                myCalendar.get(Calendar.DAY_OF_MONTH)){
            @Override

            public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth){   

                if (year > now.get(Calendar.YEAR))

                    view.updateDate(myCalendar
                            .get(Calendar.YEAR), myCalendar
                            .get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH));

                if (monthOfYear > now.get(Calendar.MONTH) && year == now.get(Calendar.YEAR))
                    view.updateDate(myCalendar
                            .get(Calendar.YEAR), myCalendar
                            .get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH));

                if (dayOfMonth > now.get(Calendar.DAY_OF_MONTH) && year == now.get(Calendar.YEAR) && 
                        monthOfYear == now.get(Calendar.MONTH))
                    view.updateDate(myCalendar
                            .get(Calendar.YEAR), myCalendar
                            .get(Calendar.MONTH), myCalendar.get(Calendar.DAY_OF_MONTH));
            }

        };

        return _date;
    }
    return null;
}
Question&Answers:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

All the other answers seem rather convoluted, so I'm just going to state the obvious: you can get the underlying DatePicker from a DatePickerDialog (by simply calling getDatePicker()) and set its bounds using:

Where the argument is the usual number of milliseconds since January 1, 1970 00:00:00 in the default time zone. You'll still have to calculate these values of course, but that should be trivial to do with the Calendar class: just take the current date and add or substract x years.

The more attentive reader will notice that the aforementioned setters weren't available until API level 11. If you're targeting that (or newer) platform only, then you're good to go. If you also want to support i.e. Gingerbread devices (Android 2.3 / API level 9+), you can use a backported version of DatePicker in stead.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

1.4m articles

1.4m replys

5 comments

56.9k users

...