iOS：时间戳转日期

//yyyy-MM-dd HH:mm:ss
//xxxx年xx月xx天xx时xx分xx秒
- (NSString *)dateToTime:(NSInteger)integer
{
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:integer];
    NSDateFormatter *dateFormate = [[NSDateFormatter alloc] init];
    [dateFormate setDateFormat:@"MM-dd HH:mm"];
    NSString *timeStr = [dateFormate stringFromDate:confromTimesp];
    return timeStr;
}//yyyy-MM-dd HH:mm:ss
//xxxx年xx月xx天xx时xx分xx秒
- (NS