ios数字钟的实现
数字钟的创建,我们首先的准备一些参数:代码如下:
#import "AppDelegate.h" @implementation AppDelegate { UILabel * _yearLabel; UILabel * _monthLabel; UILabel * _dayLabel; UILabel * _hourLabel; UILabel * _minuteLabel; UILabel * _secondLabel; NSMutableArray * _dateArray; NSTimer * _timer; }
然后,我们创建数字钟的显示界面:代码如下
1.创建一个数组,用来存放,年,月,日,时,分,秒
-(void)prepareDataArray { _dateArray = [[NSMutableArray alloc]initWithObjects:@"年",@"月",@"日",@"时",@"分",@"秒", nil]; }
2、我们创建界面,代码如下:
-(void)prepareUI { for (int i = 0; i<2; i++) { for (int j = 0; j<3; j++) { UILabel * label = [[UILabel alloc]initWithFrame:CGRectMake(70+100*j, 50+i*70, 50, 50)]; label.backgroundColor = [UIColor cyanColor]; label.textAlignment = NSTextAlignmentCenter; label.text = [_dateArray objectAtIndex:i*3+j]; label.font = [UIFont fontWithName:@"LcdD" size:35]; [self.window addSubview:label]; [label release]; } } //设置年 _yearLabel = [[UILabel alloc]initWithFrame:CGRectMake(0, 50, 70, 50)]; _yearLabel.text = @"0000"; _yearLabel.textColor = [UIColor redColor]; _yearLabel.textAlignment = NSTextAlignmentCenter; _yearLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _yearLabel.backgroundColor = [UIColor yellowColor]; [self.window addSubview:_yearLabel]; [_yearLabel release]; //设置月 _monthLabel = [[UILabel alloc]initWithFrame:CGRectMake(120, 50, 50, 50)]; _monthLabel.text = @"00"; _monthLabel.textColor = [UIColor redColor]; _monthLabel.textAlignment = NSTextAlignmentCenter; _monthLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _monthLabel.backgroundColor = [UIColor yellowColor]; [self.window addSubview:_monthLabel]; [_monthLabel release]; //设置日 _dayLabel = [[UILabel alloc]initWithFrame:CGRectMake(220, 50, 50, 50)]; _dayLabel.text = @"00"; _dayLabel.textColor = [UIColor redColor]; _dayLabel.textAlignment = NSTextAlignmentCenter; _dayLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _dayLabel.backgroundColor = [UIColor yellowColor]; [self.window addSubview:_dayLabel]; [_dayLabel release]; //设置时 UIView * view = [[UIView alloc]initWithFrame:CGRectMake(0, 120, 70, 50)]; view.backgroundColor = [UIColor yellowColor]; [self.window addSubview:view]; [view release]; _hourLabel = [[UILabel alloc]initWithFrame:CGRectMake(30, 0, 40, 50)]; _hourLabel.text = @"00"; _hourLabel.textColor = [UIColor redColor]; _hourLabel.textAlignment = NSTextAlignmentCenter; _hourLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _hourLabel.backgroundColor = [UIColor yellowColor]; [view addSubview:_hourLabel]; [_hourLabel release]; //设置分 _minuteLabel = [[UILabel alloc]initWithFrame:CGRectMake(120, 120, 50, 50)]; _minuteLabel.text = @"00"; _minuteLabel.textColor = [UIColor redColor]; _minuteLabel.textAlignment = NSTextAlignmentCenter; _minuteLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _minuteLabel.backgroundColor = [UIColor yellowColor]; [self.window addSubview:_minuteLabel]; [_minuteLabel release]; //设置秒 _secondLabel = [[UILabel alloc]initWithFrame:CGRectMake(220, 120, 50, 50)]; _secondLabel.text = @"00"; _secondLabel.textColor = [UIColor redColor]; _secondLabel.textAlignment = NSTextAlignmentCenter; _secondLabel.font = [UIFont fontWithName:@"LcdD" size:30]; _secondLabel.backgroundColor = [UIColor yellowColor]; [self.window addSubview:_secondLabel]; [_secondLabel release]; }
再者,我们获取现在时间。。。
//获取时间 ,返回一时间 字符串 -(NSString *)getDate { NSDate * date = [NSDate date]; NSDateFormatter * dateFormat = [[NSDateFormatter alloc]init]; [dateFormat setDateFormat:@"yyyy MM dd HH mm ss"]; //返回格式化后的时间字符串 return [dateFormat stringFromDate:date]; }
yyyy MM dd HH mm ss为数字中显示的样式。。。。 在然后。我们给参数赋值,为现在时间,并显示。。。代码如下 <pre name="code" class="objc">-(void)startTimer { _timer = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(changeTime) userInfo:nil repeats:YES]; }
-(void)changeTime { NSString * string = [self getDate]; NSArray * dateArray = [string componentsSeparatedByString:@" "]; _yearLabel.text = [dateArray objectAtIndex:0]; _monthLabel.text = [dateArray objectAtIndex:1]; _dayLabel.text = [dateArray objectAtIndex:2]; _hourLabel.text = [dateArray objectAtIndex:3]; _minuteLabel.text = [dateArray objectAtIndex:4]; _secondLabel.text = [dateArray objectAtIndex:5]; }
效果展示如下:
时间: 2024-10-02 04:19:24