C++ 中时间与时间戳的转换实例详解
// 设置时间显示格式:
NSString *timeStr = @"2011-01-26 17:40:50";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateStyle:NSDateFormatterMediumStyle];
[formatter setTimeStyle:NSDateFormatterShortStyle];
[formatter setDateFormat:@"YYYY-MM-dd HH:mm:ss
