/**

  * 根据出生日期计算年龄的工具类BirthdayToAgeUtil

  */

 public class BirthdayToAgeUtil {

     private static String birthday;

     private static String ageStr;

     private static int age;

     //出生年、月、日

     private static int year;

     private static int month;

     private static int day;

     public static String BirthdayToAge(String birthday1) {

         birthday = birthday1;

         stringToInt(birthday, "yyyy-MM-dd");

         // 得到当前时间的年、月、日

         Calendar cal = Calendar.getInstance();

         int yearNow = cal.get(Calendar.YEAR);

         int monthNow = cal.get(Calendar.MONTH) + 1;

         int dayNow = cal.get(Calendar.DATE);

         KLog.d("yearNow：" + yearNow);

         KLog.d("monthNow：" + monthNow);

         KLog.d("dayNow：" + dayNow);

         // 用当前年月日减去出生年月日

         int yearMinus = yearNow - year;

         int monthMinus = monthNow - month;

         int dayMinus = dayNow - day;

         age = yearMinus;// 先大致赋值

         if (yearMinus <= 0) {

             age = 0;

             ageStr = String.valueOf(age) + "周岁啦！";

             return ageStr;

         }

         if (monthMinus < 0) {

             age = age - 1;

         } else if (monthMinus == 0) {

             if (dayMinus < 0) {

                 age = age - 1;

             }

         }

         ageStr = String.valueOf(age) + "周岁啦！";

         return ageStr;

     }

     /**

      * String类型转换成date类型

      * strTime: 要转换的string类型的时间，

      * formatType: 要转换的格式yyyy-MM-dd HH:mm:ss

      * //yyyy年MM月dd日 HH时mm分ss秒，

      * strTime的时间格式必须要与formatType的时间格式相同

      */

     private static Date stringToDate(String strTime, String formatType) {

         KLog.d("进入stringToDate");

         try {

             SimpleDateFormat formatter = new SimpleDateFormat(formatType);

             Date date;

             date = formatter.parse(strTime);

             return date;

         } catch (Exception e) {

             return null;

         }

     }

     /**

      * String类型转换为long类型

      * .............................

      * strTime为要转换的String类型时间

      * formatType时间格式

      * formatType格式为yyyy-MM-dd HH:mm:ss//yyyy年MM月dd日 HH时mm分ss秒

      * strTime的时间格式和formatType的时间格式必须相同

      */

     private static void stringToInt(String strTime, String formatType) {

         KLog.d("进入stringToLong");

         try {

             //String类型转换为date类型

             Calendar calendar = Calendar.getInstance();

             Date date = stringToDate(strTime, formatType);

             calendar.setTime(date);

             KLog.d("调用stringToDate()获得的date：" + date);

             if (date == null) {

             } else {

                 //date类型转成long类型

                 year = calendar.get(Calendar.YEAR);

                 month = calendar.get(Calendar.MONTH) + 1;

                 day = calendar.get(Calendar.DAY_OF_MONTH);

             }

         } catch (Exception e) {

             KLog.d("Exception：" + e);

         }

     }

 }