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| #import "ViewController.h"
//每秒秒针转6度
#define perSecendA 6 //360/60
//每分钟分针转6度
#define perMinuteA 6 //360/60
//每小时时针转多少度
#define perHourA 30 //360/12
//每分钟时针转6度
#define perMinuteHourA 0.5 //30/60
#define angle2radian(x) ((x)/180.0 * M_PI)
@interface ViewController ()
{
CALayer *_second;
CALayer *_minute;
CALayer *_hour;
}
@property (weak, nonatomic) IBOutlet UIImageView *clockView;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//1-添加秒针
[self addSecond];
//2-添加分针
[self addMinute];
//3-添加时针
[self addHour];
//创建定时器
[NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(update) userInfo:nil repeats:YES];
[self update];
}
//添加时针
-(void)addHour
{
CGFloat imageW=_clockView.bounds.size.width;
CGFloat imageH=_clockView.bounds.size.height;
//1.添加分针
CALayer *hour=[CALayer layer];
//2.添加锚点
hour.anchorPoint=CGPointMake(0.5, 1);
//3.设置位置
hour.position=CGPointMake(imageW*0.5, imageH*0.5);
//4.设置尺寸
hour.bounds=CGRectMake(0, 0, 4, imageH*0.5-50);
//5.设置背景色
hour.backgroundColor=[UIColor blackColor].CGColor;
hour.cornerRadius=5;
//6.添加到图层上
[_clockView.layer addSublayer:hour];
_hour=hour;
}
//添加分针
-(void)addMinute
{
CGFloat imageW=_clockView.bounds.size.width;
CGFloat imageH=_clockView.bounds.size.height;
//1.添加分针
CALayer *minute=[CALayer layer];
//2.添加锚点
minute.anchorPoint=CGPointMake(0.5, 1);
//3.设置位置
minute.position=CGPointMake(imageW*0.5, imageH*0.5);
//4.设置尺寸
minute.bounds=CGRectMake(0, 0, 2, imageH*0.5-30);
//5.设置背景色
minute.backgroundColor=[UIColor blackColor].CGColor;
//6.添加到图层上
[_clockView.layer addSublayer:minute];
_minute=minute;
}
//添加秒针
-(void)addSecond
{
CGFloat imageW=_clockView.bounds.size.width;
CGFloat imageH=_clockView.bounds.size.height;
//1.添加秒针
CALayer *second=[CALayer layer];
//2.添加锚点
second.anchorPoint=CGPointMake(0.5, 1);
//3.设置位置
second.position=CGPointMake(imageW*0.5, imageH*0.5);
//4.设置尺寸
second.bounds=CGRectMake(0, 0, 1, imageH*0.5-20);
//5.设置背景色
second.backgroundColor=[UIColor redColor].CGColor;
//6.添加到图层上
[_clockView.layer addSublayer:second];
_second=second;
}
-(void)update
{
//获取秒数
//获取日历对象
NSCalendar *calendar=[NSCalendar currentCalendar];
NSDateComponents *compoents=[calendar components:NSCalendarUnitSecond|NSCalendarUnitMinute|NSCalendarUnitHour fromDate:[NSDate date]];
//获取秒数
CGFloat sec=compoents.second;
//获取分钟
CGFloat minute=compoents.minute;
//获取小时
CGFloat hour=compoents.hour;
//算出秒针旋转多少
CGFloat secondA=sec*perSecendA;
//算出分针旋转多少
CGFloat minuteA=minute*perMinuteA;
//算出时针旋转多少
CGFloat hourA=hour*perHourA;
hourA+=minute*perMinuteHourA;
//旋转秒针
_second.transform=CATransform3DMakeRotation(angle2radian(secondA), 0, 0, 1);
//旋转分针
_minute.transform=CATransform3DMakeRotation(angle2radian(minuteA), 0, 0, 1);
//旋转时针
_hour.transform=CATransform3DMakeRotation(angle2radian(hourA), 0, 0, 1);
}
@end
|
