一.前言

最近做一個智能幼教產品，需要通過出生年月計算兒童用戶的年齡大小，寫了一個簡單的函數方法調用如下，希望能給有需要人有所幫助，不正之處望多指正！ 復制代碼

#pragma mark -- 生日轉化為年齡 +(NSString *)countAgeWithBirthDay:(NSString *)birth{ //定義一個NSCalendar對象 NSCalendar *calendar = [NSCalendar currentCalendar];

NSDate *nowDate = [NSDate date];NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init]; [dateFormatter setDateFormat:@"yyyy-MM-dd"]; //生日 NSDate *birthDay = [dateFormatter dateFromString:birth];//用來得到詳細的時差 unsigned int unitFlags = NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit|NSHourCalendarUnit|NSMinuteCalendarUnit|NSSecondCalendarUnit;NSDateComponents *date = [calendar components:unitFlags fromDate:birthDay toDate:nowDate options:0];if([date year] >0) {NSLog(@"%@",[NSString stringWithFormat:(@"%ld歲%ld月%ld天"),(long)[date year],(long)[date month],(long)[date day]]) ;return [NSString stringWithFormat:(@"%ld歲%ld月%ld天"),(long)[date year],(long)[date month],(long)[date day]] ; } else if([date month] >0) {NSLog(@"%@",[NSString stringWithFormat:(@"%ld月%ld天"),(long)[date month],(long)[date day]]);return [NSString stringWithFormat:(@"%ld月%ld天"),(long)[date month],(long)[date day]] ; } else if([date day]>0){NSLog(@"%@",[NSString stringWithFormat:(@"%ld天"),(long)[date day]]);return [NSString stringWithFormat:(@"%ld天"),(long)[date day]] ; } else {NSLog(@"0天");return @"0" ; } 復制代碼

}

轉載于:https://juejin.im/post/5a31d46af265da43176a25ee

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