android - DatePickeDialog 在 android 中显示多一个月

Question

当我按下按钮以显示 DatePickerDialog 时，对话框显示多一个月。例如，如果我像这样以当前日期开始(使用 joda 库的 DateTime):

   DateTimeZone zone = DateTimeZone.forID("Europe/Athens");

   DateTime dt = new DateTime(zone);


   int year = dt.getYear();
   int month = dt.getMonthOfYear();
   int day = dt.getDayOfMonth();

即 07/08/2014，日期对话框显示比 07/09/2014 大一个月。我不明白为什么会这样。

代表 datePickerFragment 的 fragment 是:

 @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(" "));
            }



    }

Answer 1

DatePickerDialog采用 monthOfYear 即 0 到 11 [1 月为 0...Dec 为 11]，并且您的 DateTime 返回 1 到 12 。所以你需要用月值做 -1。

使用这个:

return new DatePickerDialog(getActivity(), this, year, month - 1, day);