例1、 從服務器段獲取到的字符串轉化為時間如：轉化1416882712000

//網絡請求獲取的數據

NSString *time = [NSStringstringWithFormat:@%@,[[dateListobjectAtIndex:indexPath.row]gradeDate]];

NSInteger num = [time integerValue]/1000;（重點）

NSDateFormatter *formatter = [[[NSDateFormatteralloc]init]autorelease];

[formatter setDateStyle:NSDateFormatterMediumStyle];

[formatter setTimeStyle:NSDateFormatterShortStyle];

[formatter setDateFormat:@YYYY-MM-dd];

NSDate*confromTimesp = [NSDatedateWithTimeIntervalSince1970:num];NSString*confromTimespStr = [formatterstringFromDate:confromTimesp];

cell.DateContent.text = confromTimespStr;

轉化之後結果為：2014-11-25

 

例2、如何如何將一個字符串如“ 20110826134106”裝化為任意的日期時間格式，下面列舉兩種類型：

NSString*string = @20110826134106;

NSDateFormatter *inputFormatter= [[[NSDateFormatter alloc] init] autorelease];

[inputFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@en_US] autorelease]];

[inputFormatter setDateFormat:@yyyyMMddHHmmss];

NSDate*inputDate = [inputFormatter dateFromString:string];

NSLog(@date= %@, inputDate);

 

NSDateFormatter *outputFormatter= [[[NSDateFormatter alloc] init] autorelease];

[outputFormatter setLocale:[NSLocale currentLocale]];

[outputFormatter setDateFormat:@yyyy年MM月dd日 HH時mm分ss秒];

NSString *str= [outputFormatter stringFromDate:inputDate];

NSLog(@testDate:%@,str);

兩次打印的結果為：

date= 2011-08-26 05:41:06 +0000

testDate:2011年08月26日 13時41分06秒