Android編程實(shí)現(xiàn)計(jì)算兩個(gè)日期之間天數(shù)并打印所有日期的方法

/**
* 計(jì)算兩個(gè)日期之間的日期
* @param startTime
* @param endTime
*/
private void betweenDays(long startTime,long endTime,long mills_select,int code){
   Date date_start=new Date(startTime);
   Date date_end=new Date(endTime);
   //計(jì)算日期從開(kāi)始時(shí)間于結(jié)束時(shí)間的0時(shí)計(jì)算
   Calendar fromCalendar = Calendar.getInstance();
   fromCalendar.setTime(date_start);
   fromCalendar.set(Calendar.HOUR_OF_DAY, 0);
   fromCalendar.set(Calendar.MINUTE, 0);
   fromCalendar.set(Calendar.SECOND, 0);
   fromCalendar.set(Calendar.MILLISECOND, 0);
   Calendar toCalendar = Calendar.getInstance();
   toCalendar.setTime(date_end);
   toCalendar.set(Calendar.HOUR_OF_DAY, 0);
   toCalendar.set(Calendar.MINUTE, 0);
   toCalendar.set(Calendar.SECOND, 0);
   toCalendar.set(Calendar.MILLISECOND, 0);
   int s = (int) ((toCalendar.getTimeInMillis() - fromCalendar.getTimeInMillis())/ (ONE_DAY_MS));
   if(s>0){
     for(int i = 0;i<=s;i++){
       long todayDate = fromCalendar.getTimeInMillis() + i * ONE_DAY_MS;
       /**
        * yyyy-MM-dd E :2012-09-01
        */
       Log.i("打印日期",Utils.getCustonFormatTime(todayDate,"yyyy-MM-dd"));
     }
   }else {//此時(shí)在同一天之內(nèi)
       Log.i("打印日期",Utils.getCustonFormatTime(startTime,"yyyy-MM-dd"));
   }
}

/**
* 格式化傳入的時(shí)間
*
* @param time   需要格式化的時(shí)間
* @param formatStr 格式化的格式
* @return
*/
public static String getCustonFormatTime(long time, String formatStr) {
    SimpleDateFormat format = new SimpleDateFormat(formatStr);
    Date d1 = new Date(time);
    return format.format(d1);
}