iOS开发中NSDate时间戳的转换--

NSTimeInterval time =(NSTimeInterval )[model.day floatValue];

NSDate *date = [NSDate dateWithTimeIntervalSince1970:time];

//转化为字符串

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

[dateFormatter setDateFormat:@"yyyy/MM/dd hh:mm"];

NSString *dateStr = [dateFormatter stringFromDate:date];