java - 两个日期之间的差异？

Question

friend 们，我希望计算天数差异。

假设我输入 31st Aug 23:59:00 和下一个日期 1 Sept 00:02:00 ，我需要将记录显示为 1 天。

请帮我解决这个问题。

现在我正在使用 .getTimeInMillis() 进行相同的计算，但它没有为我提供上述日期条件的预期结果。

Answer 1

那我你找日差和时差，用我的代码

public class AndroidWebImage extends Activity {

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) 
{
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  Date sdate=Calendar.getInstance().getTime();
  SimpleDateFormat format = new SimpleDateFormat("dd/MM/yy HH:mm:ss");

  String setDate = "13/09/12 10:20:43";
  Date AlarmDate=new Date(setDate);
  String currentDate = format.format(sdate);

  Date d1 = null;
  Date d2 = null;
  try {
      d1 = format.parse(setDate);
      d2 = format.parse(currentDate);
  } catch (ParseException e) {
      e.printStackTrace();
  }    
 //Comparison
  long diff = d1.getTime() - d2.getTime();
  long diffSeconds = diff / 1000 % 60;  

  long days = (int) (diff / (1000 * 60 * 60 * 24));
  long diffHours = (int) ((diff- (1000 * 60 * 60 * 24 * days)) / (1000 * 60 * 60));
  long diffMinutes = (int) (diff- (1000 * 60 * 60 * 24 * days) - (1000 * 60 * 60 *      diffHours))/ (1000 * 60);

  int curhour=sdate.getHours();
  int curmin=sdate.getMinutes();
  int alarmhour=AlarmDate.getHours();
  int alarmmin=AlarmDate.getMinutes();
  if(curhour==alarmhour && curmin==alarmmin)
  {
      Toast.makeText(getApplicationContext(), String.valueOf(days+"days\n"+diffHours+"hrs"+diffMinutes+"min\n"+diffSeconds+"sec"),Toast.LENGTH_LONG).show();
  }
  else if(curhour>=alarmhour && curmin>=alarmmin || curhour<=alarmhour && curmin<=alarmmin)
  {
      Toast.makeText(getApplicationContext(), String.valueOf(days+"days\n"+diffHours+"hrs"+diffMinutes+"min\n"+diffSeconds+"sec"),Toast.LENGTH_LONG).show();
  }




 }
}