Android获取两个日期之间间隔的天数

/** 
 * 获取两个日期之间的间隔天数 
 * @return 
 */  
public static int getGapCount(Date startDate, Date endDate) {  
       Calendar fromCalendar = Calendar.getInstance();    
       fromCalendar.setTime(startDate);    
       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(endDate);    
       toCalendar.set(Calendar.HOUR_OF_DAY, 0);    
       toCalendar.set(Calendar.MINUTE, 0);    
       toCalendar.set(Calendar.SECOND, 0);    
       toCalendar.set(Calendar.MILLISECOND, 0);    
   
       return (int) ((toCalendar.getTime().getTime() - fromCalendar.getTime().getTime()) / (1000 * 60 * 60 * 24));  
}

 ​​Android 时间格式 年月日时分秒毫秒​​:

int count = Utils.getGapCount(curDate, futureDate);
SimpleDateFormat format = new SimpleDateFormat("yyyyMMddHHmmss");
String time = format.format(new Date(count));