时间戳相关

//获取当前时间
- (NSString*)getCurrentTime {
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
    [formatter setDateFormat:@"yy-MM-dd-HH-mm-ss"];
    NSString *dateTime = [formatter stringFromDate:[NSDate date]];
    self.currentTime = dateTime;
    NSLog(@"当前时间是===%@",_currentTime);
    return _currentTime;
}

//获取当前时间戳
- (NSString*)getCurrentTimestamp {
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:0];
    NSTimeInterval timeInterval = [date timeIntervalSince1970];
    NSString *timeString = [NSString stringWithFormat:@"%0.f", timeInterval];
    //转为字符型 NSLog(@"当前时间戳是===%@",timeString);
    return timeString;
}

//把时间戳转化为时间
-(NSString*)SetTime:(NSString*)time {
    NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
    [formatter setDateStyle:NSDateFormatterMediumStyle];
    [formatter setTimeStyle:NSDateFormatterShortStyle];
    [formatter setDateFormat:@"yy-MM-dd"];
    int timeval = [time intValue];
    NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeval];
    NSString *confromTimespStr = [formatter stringFromDate:confromTimesp];
    return confromTimespStr;
}