iOS开发 Date转字符串

+ (NSString *)formatterDate:(NSNumber *)desDate

WithDateFormatter:(NSString *)formatter{

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

[dateFormatter setDateFormat:formatter];

NSDate *date = [NSDate dateWithTimeIntervalSince1970:[desDate doubleValue]];

return [NSString stringWithFormat:@"%@",[dateFormatter stringFromDate:date]];

}