时间戳转化为日期TimeStamp转NSDate转NSString

 //时间戳处理

NSInteger time = [self.album.updatedAt integerValue] / 1000;

NSNumber *timer = [NSNumber numberWithInteger:time];

NSTimeInterval interval = [timer doubleValue];

NSDate *date = [NSDate dateWithTimeIntervalSince1970:interval];

//设置日期格式

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

[formatter setDateStyle:NSDateFormatterMediumStyle];

[formatter setTimeStyle:NSDateFormatterShortStyle];

[formatter setDateFormat:@"yyyy-MM-dd"];

NSString *str = [formatter stringFromDate:date];

[formatter release];