private void updateDaySpinner() {
Calendar cal = Calendar.getInstance();
// if year was not set, use 2000 as it was a leap year
cal.set(mHasYear ? mYear : 2000, mMonth, 1);
int max = cal.getActualMaximum(Calendar.DAY_OF_MONTH);
mDayPicker.setRange(1, max);
mDayPicker.setCurrent(mDay);
}
public DatePicker(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
LayoutInflater inflater =
(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
inflater.inflate(R.layout.date_picker, this, true);
mDayPicker = (NumberPicker) findViewById(R.id.day);
mDayPicker.setFormatter(NumberPicker.TWO_DIGIT_FORMATTER);
mDayPicker.setOnChangeListener(
new OnChangedListener() {
public void onChanged(NumberPicker picker, int oldVal, int newVal) {
mDay = newVal;
notifyDateChanged();
}
});
mMonthPicker = (NumberPicker) findViewById(R.id.month);
mMonthPicker.setFormatter(NumberPicker.TWO_DIGIT_FORMATTER);
DateFormatSymbols dfs = new DateFormatSymbols();
final String[] months = dfs.getShortMonths();
/*
* If the user is in a locale where the month names are numeric,
* use just the number instead of the "month" character for
* consistency with the other fields.
*/
if (months[0].startsWith("1")) {
for (int i = 0; i < months.length; i++) {
months[i] = String.valueOf(i + 1);
}
mMonthPicker.setRange(1, 12);
} else {
mMonthPicker.setRange(1, 12, months);
}
mMonthPicker.setSpeed(200);
mMonthPicker.setOnChangeListener(
new OnChangedListener() {
public void onChanged(NumberPicker picker, int oldVal, int newVal) {
/* We display the month 1-12 but store it 0-11 so always
* subtract by one to ensure our internal state is always 0-11
*/
mMonth = newVal - 1;
// Adjust max day of the month
adjustMaxDay();
notifyDateChanged();
updateDaySpinner();
}
});
mYearPicker = (NumberPicker) findViewById(R.id.year);
mYearPicker.setSpeed(100);
mYearPicker.setOnChangeListener(
new OnChangedListener() {
public void onChanged(NumberPicker picker, int oldVal, int newVal) {
mYear = newVal;
// Adjust max day for leap years if needed
adjustMaxDay();
notifyDateChanged();
updateDaySpinner();
}
});
mYearToggle = (CheckBox) findViewById(R.id.yearToggle);
mYearToggle.setOnCheckedChangeListener(
new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
mHasYear = isChecked;
adjustMaxDay();
notifyDateChanged();
updateSpinners();
}
});
// attributes
TypedArray a =
context.obtainStyledAttributes(attrs, com.android.internal.R.styleable.DatePicker);
int mStartYear =
a.getInt(com.android.internal.R.styleable.DatePicker_startYear, DEFAULT_START_YEAR);
int mEndYear = a.getInt(com.android.internal.R.styleable.DatePicker_endYear, DEFAULT_END_YEAR);
mYearPicker.setRange(mStartYear, mEndYear);
a.recycle();
// initialize to current date
Calendar cal = Calendar.getInstance();
init(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH), null);
// re-order the number pickers to match the current date format
reorderPickers(months);
if (!isEnabled()) {
setEnabled(false);
}
}