本文实例讲述了Android编程实现根据不同日期计算天数差的方法。分享给大家供大家参考，具体如下：
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Calendar cal1 = getCalendarFromDate(mStartDate);
long startTime = cal1.getTimeInMillis();
Calendar cal2 = getCalendarFromDate(mEndDate);
long endTime = cal2.getTimeInMillis();
int numberOfDays = (int)(endTime - startTime)/(24 * 60 * 60 * 1000);
/**
* @param date format is 2012-9-18
* @return Calendar value is after set date's value
*/
private Calendar getCalendarFromDate(final String date) {
int year = 0;
int month = 0;
int day = 0;
try {
String[] array = date.split("-");
int[] arrayInt = new int[array.length];
for (int i = 0; i < array.length; i++) {
arrayInt[i] = Integer.parseInt(array[i]);
if(i == 0) {
year = arrayInt[0];
} else if(i == 1){
month = arrayInt[1];
} else if(i == 2){
day = arrayInt[2];
}
}
} catch (Exception e) {
e.printStackTrace();
}
Calendar cal = Calendar.getInstance();
if(year > 0 && month >= 0 && day >= 0) {
cal.set(year, month, day);
}
return cal;
}
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PS:month 取值范围为0-11
希望本文所述对大家Android程序设计有所帮助。