ios中如何将一串数字传化成时间

时间和时间戳相互转换

一、把数字转化成时间如下：

NSString*time = @"1329038338";

NSDateFormatter *formatter = [[[NSDateFormatter alloc] init]autorelease];
[formatter setDateStyle:NSDateFormatterMediumStyle];
[formatter setTimeStyle:NSDateFormatterShortStyle];
[formatter setDateFormat:@"YYYY-MM-dd HH:mm"];
NSDate*confromTimesp = [NSDate dateWithTimeIntervalSince1970:(NSTimeInterval)[time intValue]];
NSString*confromTimespStr = [formatter stringFromDate:confromTimesp];
timeString = confromTimespStr;

二、把时间转化成数字如下：

NSDate*date = [NSDatedate];

NSDateFormatter *formatter1 = [[[NSDateFormatteralloc]init]autorelease];

[formatter1 setDateStyle:NSDateFormatterMediumStyle];

[formatter1 setTimeStyle:NSDateFormatterShortStyle];

[formatter1 setDateFormat:@"YYYY-MM-dd HH:mm"];

NSString* timesp = [NSStringstringWithFormat:@"%lld",(longlong)[datetimeIntervalSince1970]];

NSLog(@"++++++%@",timesp);