获取当前日期时间并以LCD形式显示

- (void)viewDidLoad {
    [super viewDidLoad];
	[self updateTime];
	[NSTimer scheduledTimerWithTimeInterval:(1.0) target:self selector:@selector(updateTime) userInfo:nil repeats:YES];
}

-(void)updateTime
{
	NSString *time = [self getCurrentTime];
	timeLabel.text = time;
	[timeLabel setFont:[UIFont fontWithName:@"DBLCDTempBlack" size:25.0]];
	[timeLabel setTextAlignment:UITextAlignmentCenter];
	[timeLabel setTextColor:[UIColor redColor]];
	[self.view setBackgroundColor:[UIColor blackColor]];
}

- (NSString *) getCurrentTime{
	NSDate *today = [NSDate date];
	NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
	[dateFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
	NSString *currentTime = [dateFormatter stringFromDate:today];
	[dateFormatter release]; 
	return currentTime;
}