Calendar.MONTH给出错误的值

Question

我正在尝试使用以下内容从Calendar获取实际月份：

Calendar c = Calendar.getInstance();          
String time = String.valueOf(c.get(Calendar.MONTH));

根据系统设置“设置 - ＆gt;日期和时间”，实际月份为10，而get(Calendar.MONTH)返回09.

Answer 1

请注意，月份值从0开始，因此October实际上是月份号9。

http://docs.oracle.com/javase/1.4.2/docs/api/java/util/Calendar.html#MONTH

Answer 2

Calendar.MONTH返回的月份为零，这就是为什么它比实际月份少1 添加1以获得正确的值

String time = String.valueOf(c.get(Calendar.MONTH)+1);

Answer 3

Calendar.MONTH

返回

0 for 1st month (jan)
1 for 2nd month (feb)
.
.
11 for 12th month (dec)

Docs

所以将代码更改为

String time = String.valueOf(c.get(Calendar.MONTH)+1);// added 1 

Answer 4

Calendar.MONTH值从0到11开始，而不是从1到12。

您可以检查Calendar.JANUARY的值是0而不是1。

参考：http://developer.android.com/reference/java/util/Calendar.html#JANUARY

Answer 5

我建议尝试

@Override
public void onSelectedDayChange(CalendarView view, int year, int month, int day) {
Toast.makeText(getApplicationContext(), month+1 + "/" + day  + "/" + year, Toast.LENGTH_SHORT).show();
calDate = month+1 + "/" + day + "/" + year; }
});

Answer 6

使用此

    public void DateDialog(){

    DatePickerDialog.OnDateSetListener listener=new DatePickerDialog.OnDateSetListener() {
        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
        {
            int Month;
            Month=monthOfYear+1;
            fromDate.setText(year + "-" + Month + "-" + dayOfMonth);
        }};
    DatePickerDialog dpDialog=new DatePickerDialog(getActivity(), listener, year, month, day);
    dpDialog.getDatePicker().setMinDate(mcalendar.getTimeInMillis());
    dpDialog.show();
}