59

通过使用此代码：

SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = format.parse(dtStart);
return date;

我已经通过日期对象转换了字符串日期并获得了值：

2013 年 2 月 17 日星期日 07:00:00 GMT

现在我想从这里提取日期（星期日/星期一）和月份。

4

10 回答 10

213 
import android.text.format.DateFormat;

String dayOfTheWeek = (String) DateFormat.format("EEEE", date); // Thursday
String day          = (String) DateFormat.format("dd",   date); // 20
String monthString  = (String) DateFormat.format("MMM",  date); // Jun
String monthNumber  = (String) DateFormat.format("MM",   date); // 06
String year         = (String) DateFormat.format("yyyy", date); // 2013
于 2013-06-19T13:46:42.203 回答
26

你可以试试：

String input_date="01/08/2012";
SimpleDateFormat format1=new SimpleDateFormat("dd/MM/yyyy");
Date dt1=format1.parse(input_date);
DateFormat format2=new SimpleDateFormat("EEEE"); 
String finalDay=format2.format(dt1);

也试试这个：

Calendar c = Calendar.getInstance();
c.setTime(yourDate);
int dayOfWeek = c.get(Calendar.DAY_OF_WEEK);
于 2013-06-19T13:41:35.233 回答
4

自定义星期几，你可以使用这个功能

public static String getDayFromDateString(String stringDate,String dateTimeFormat)
{
    String[] daysArray = new String[] {"saturday","sunday","monday","tuesday","wednesday","thursday","friday"};
    String day = "";

    int dayOfWeek =0;
    //dateTimeFormat = yyyy-MM-dd HH:mm:ss
    SimpleDateFormat formatter = new SimpleDateFormat(dateTimeFormat);
    Date date;
    try {
        date = formatter.parse(stringDate);
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        dayOfWeek = c.get(Calendar.DAY_OF_WEEK)-1;
        if (dayOfWeek < 0) {
            dayOfWeek += 7;
        }
        day = daysArray[dayOfWeek];
    } catch (Exception e) {
        e.printStackTrace();
    }

    return day;
}

dateTimeFormat 例如 dateTimeFormat = "yyyy-MM-dd HH:mm:ss";

于 2015-08-15T10:17:51.803 回答
3
于 2018-12-16T07:13:10.930 回答
2

考虑使用 java.util.Calendar 类。

String dateString = "20/12/2018";
DateFormat df = new SimpleDateFormat("dd/MM/yyyy");

Date readDate = df.parse(dateString);
Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(readDate.getTime());

Log.d(TAG, "Year: "+cal.get(Calendar.YEAR));
Log.d(TAG, "Month: "+cal.get(Calendar.MONTH));
Log.d(TAG, "Day: "+cal.get(Calendar.DAY_OF_MONTH));
于 2018-12-20T06:40:25.647 回答
2

同样在 Kotlin 中：

    val string = "2020-01-13T00:00:00"
    val format = SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss", Locale.US)
    val date = format.parse(string)

    val day = DateFormat.format("dd", date) as String
    val monthNumber = DateFormat.format("MM", date) as String
    val year = DateFormat.format("yyyy", date) as String
于 2020-01-13T13:08:50.367 回答
1

在 Kotlin 中，您还可以使用它获取当前日期名称。（需要 API 级别 26）

(Calendar.getInstance() as GregorianCalendar).toZonedDateTime().dayOfWeek
于 2020-03-06T09:39:35.483 回答
1 
public static String getDayFromStringDate(String stringDate, String dateFormat, boolean abbreviated) throws ParseException {

    String pattern;

    if (abbreviated) {

        pattern = "E"; // For short day eg: Mon,Tue
    } else {

        pattern = "EEEE"; // For compete day eg: Monday, Tuesday
    }

    return new SimpleDateFormat(pattern)
            .format(new SimpleDateFormat(dateFormat).parse(stringDate));
}

例如：如果 stringDate :- 16/12/2018 那么 dateFormat : - dd/MM/yyyy

于 2018-12-16T06:19:12.190 回答
1 
 Calendar calendar = Calendar.getInstance();
   DateFormat date= new SimpleDateFormat("EEEE", Locale.getDefault());
    String dayName= date.format(calendar.getTime()); //Monday
    date = SimpleDateFormat("EE", Locale.getDefault());
    dayName = date2.format(calendar.time); //Sun
    date= new SimpleDateFormat("dd", Locale.getDefault());
    String dayNumber = date.format(calendar.getTime()); //20
    date= new SimpleDateFormat("MMM", Locale.getDefault());
    String monthName= date.format(calendar.getTime()); //Apr
    date= new SimpleDateFormat("MM", Locale.getDefault());
    String monthNumber= date.format(calendar.getTime()); //04
    date= new SimpleDateFormat("yyyy", Locale.getDefault());
    String year= date.format(calendar.getTime()); //2020

而已。请享用

于 2020-04-20T07:35:29.067 回答
-1 
selecteddate = "Tue Nov 26 15:49:25 GMT+05:30 2019";

SimpleDateFormat dateUI = new SimpleDateFormat("EEEE, dd-MMMM-yyyy");

字符串日期 = dateUI.foramt(selecteddate);

Log.e(context,"日期");

于 2019-11-26T10:24:23.073 回答