iOS 中简单的获取精准本地时间的方法

我们在获取当前时间的时候一般获取的都是美国的时间，会比我们的北京时间快了4个小时，下面我们就说一下获取到准确时间的方法：

  //获取当前时间
    NSDate *now = [NSDate date];
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:now];
    
    int year = (int)[dateComponent year];
    int month = (int)[dateComponent month];
    int day = (int)[dateComponent day];
    int hour = (int)[dateComponent hour];
    int minite = (int)[dateComponent minute];
    int second = (int)[dateComponent second];

    NSString *yearStr = [NSString stringWithFormat:@"%d",year];
    NSString *monthStr = [NSString stringWithFormat:@"%d",month];
    NSString *dayStr = [NSString stringWithFormat:@"%d",day];
    NSString *hourStr = [NSString stringWithFormat:@"%d",hour];
    NSString *miniteStr = [NSString stringWithFormat:@"%d",minite];

    NSString *secondStr = [NSString stringWithFormat:@"%d",second];



    NSLog(@"%@-%@-%@ %@:%@:%@",yearStr,monthStr,dayStr,hourStr,miniteStr,secondStr);

这样就好了，下面我们看一下运行之后的效果图：

可以看见我们Log打印出的是和我们想要的当前时间一致。。。