[java] Android에서 날짜를 비교하는 가장 좋은 방법

문자열 형식의 날짜를 현재 날짜와 비교하려고합니다. 이것이 내가 한 방법이지만 (테스트를 거치지 않았지만 작동해야 함) 더 이상 사용되지 않는 방법을 사용하고 있습니다. 대안에 대한 좋은 제안이 있습니까? 감사.

추신 나는 Java로 Date 작업을 정말 싫어합니다. 동일한 작업을 수행하는 방법이 너무 많아서 어느 것이 올바른지 확실하지 않으므로 여기에 제 질문이 있습니다.

String valid_until = "1/1/1990";

Calendar cal = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("dd/mm/yyyy");
Date strDate = sdf.parse(valid_until);

int year = strDate.getYear(); // this is deprecated
int month = strDate.getMonth() // this is deprecated
int day = strDate.getDay(); // this is deprecated       

Calendar validDate = Calendar.getInstance();
validDate.set(year, month, day);

Calendar currentDate = Calendar.getInstance();

if (currentDate.after(validDate)) {
    catalog_outdated = 1;
}

답변

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date strDate = sdf.parse(valid_until);
if (new Date().after(strDate)) {
    catalog_outdated = 1;
}

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date strDate = sdf.parse(valid_until);
if (System.currentTimeMillis() > strDate.getTime()) {
    catalog_outdated = 1;
}

// Get Current Date Time
Calendar c = Calendar.getInstance();
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy HH:mm aa");
String getCurrentDateTime = sdf.format(c.getTime());
String getMyTime="05/19/2016 09:45 PM ";
Log.d("getCurrentDateTime",getCurrentDateTime);
// getCurrentDateTime: 05/23/2016 18:49 PM

if (getCurrentDateTime.compareTo(getMyTime) < 0)
{

}
else
{
 Log.d("Return","getMyTime older than getCurrentDateTime ");
}

Calendar validDate = new GregorianCalendar();
validDate.setTime(strDate);
if (Calendar.getInstance().after(validDate)) {
    catalog_outdated = 1;
}

String valid_until = "01/07/2013";
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date strDate = null;
try {
    strDate = sdf.parse(valid_until);
} catch (ParseException e) {
    e.printStackTrace();
}
if (new Date().after(strDate)) {
    catalog_outdated = 1;
}

Calendar toDayCalendar = Calendar.getInstance();
Date date1 = toDayCalendar.getTime();


Calendar tomorrowCalendar = Calendar.getInstance();
tomorrowCalendar.add(Calendar.DAY_OF_MONTH,1);
Date date2 = tomorrowCalendar.getTime();

// date1 is a present date and date2 is tomorrow date

if ( date1.compareTo(date2) < 0 ) {

  //  0 comes when two date are same,
  //  1 comes when date1 is higher then date2
  // -1 comes when date1 is lower then date2

 }

String date = "03/26/2012 11:00:00";
    String dateafter = "03/26/2012 11:59:00";
    SimpleDateFormat dateFormat = new SimpleDateFormat(
            "MM/dd/yyyy hh:mm:ss");
    Date convertedDate = new Date();
    Date convertedDate2 = new Date();
    try {
        convertedDate = dateFormat.parse(date);
        convertedDate2 = dateFormat.parse(dateafter);
        if (convertedDate2.after(convertedDate)) {
            txtView.setText("true");
        } else {
            txtView.setText("false");
        }
    } catch (ParseException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd",Locale.getDefault());
Calendar calendar1 = Calendar.getInstance();
Calendar calendar2 = Calendar.getInstance();

Date date1 = dateFormat.parse("2013-01-01");
Date date2 = dateFormat.parse("2013-01-02");

calendar1.setTime(date1);
calendar2.setTime(date2);

System.out.println("Compare Result : " + calendar2.compareTo(calendar1));
System.out.println("Compare Result : " + calendar1.compareTo(calendar2));