我有同样的错误(以及 StackOverflow 上的许多人)
我的解决方案:
monthPickerFrom =(DatePicker)mDialogView.findViewById(R.id.monthPickerFrom);
HideDay(monthPickerFrom);
Calendar currentDate = Calendar.getInstance();
Calendar cal = Calendar.getInstance();
cal.set(Calendar.YEAR, 2007);
cal.set(Calendar.MONTH, Calendar.JANUARY);
cal.set(Calendar.DAY_OF_MONTH, 1);
cal.set(Calendar.HOUR, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
monthPickerFrom.setMinDate(cal.getTimeInMillis());
cal.set(Calendar.YEAR, currentDate.get(Calendar.YEAR));
cal.set(Calendar.MONTH, currentDate.get(Calendar.MONTH));
monthPickerFrom.setMaxDate(cal.getTimeInMillis());
monthPickerFrom.init(currentDate.get(Calendar.YEAR), currentDate.get(Calendar.MONTH), 1, new DatePicker.OnDateChangedListener() {
@Override
public void onDateChanged(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
...
});