Object-C时间与字符串的转化

NSDateFormatter *dateFormatter=[[NSDateFormatter alloc] init];

[dateFormatter setDateFormat:@"eee, dd MMM yyyy HH:mm:ss ZZZ"];

NSDate *date=[dateFormatter dateFromString:｛需要转化的字符串｝];

NSDateFormatter *dateToStringFormatter=[[NSDateFormatter alloc] init];

[dateToStringFormatter setDateFormat:@"发布时间：yyyy-MM-dd HH:MM"];

NSString *nsDate=[dateToStringFormatter stringFromDate:date];