ios 时钟

#import "ViewController.h"

//每一秒旋转多少度

#define  perSecA6

//每一分旋转多少度

#define perMinA6

//每一小时旋转多少度

#define perHourA30

//每一分,时针旋转的度数

#define perMinHour0.5

#define angle2Rad(angle) ((angle) /180* M_PI)

@interface ViewController ()

@property (strong, nonatomic) IBOutlet UIImageView *clockView;

@property (nonatomic, weak) CALayer *secL;

@property (nonatomic, weak) CALayer *minL;

@property (nonatomic, weak) CALayer *hourL;

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    [selfsetHour];

    [selfsetMin];

    [selfsetSec];

    [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeChange) userInfo:nil repeats:YES];

    [self timeChange];

}

-(void)timeChange{

    NSCalendar *cal = [NSCalendar currentCalendar];

    //components:日历组件,年,月,日,时,分,秒

    //fromDate:从什么时间开始获取

    NSDateComponents *cmp = [cal components:NSCalendarUnitSecond | NSCalendarUnitMinute | NSCalendarUnitHour fromDate:[NSDate date]];

    //获取当前多少秒

    NSIntegercurSec = cmp.second;

    //秒针旋转

    //计算秒针当前旋转的角度

    //angle:当前多少秒 * 每一秒旋转多少度

    CGFloatsecA = curSec *perSecA;

    self.secL.transform = CATransform3DMakeRotation(angle2Rad(secA), 0, 0, 1);

    //获取当前多少分

    NSIntegercurMin = cmp.minute;

    //分针开始旋转

    //计算分针当前旋转的角度

    //angle = 当前多少分 * 每一分旋转多少度

    CGFloatminA = curMin *perMinA;

    self.minL.transform = CATransform3DMakeRotation((minA), 0, 0, 1);

    //获取当前多少小时

    NSIntegercurHour = cmp.hour;

    //时针开始旋转

    //计算时针当前旋转的角度

    //angle = 当前多少小时 * 每一分旋转多少度

    CGFloathourA = curHour *perHourA+ curMin *perMinHour;

    self.hourL.transform = CATransform3DMakeRotation(angle2Rad(hourA), 0, 0, 1);

}

-(void)setSec{

    CALayer*secL = [CALayerlayer];

    secL.bounds=CGRectMake(0,0,3,70);

    secL.backgroundColor = [UIColor redColor].CGColor;

    secL.anchorPoint=CGPointMake(0.5,1);

    secL.cornerRadius=0.5;

    secL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5);

    [self.clockView.layeraddSublayer:secL];

    self.secL= secL;

}

-(void)setMin{

    CALayer*minL = [CALayerlayer];

    minL.bounds=CGRectMake(0,0,3,60);

    minL.backgroundColor = [UIColor blackColor].CGColor;

    minL.anchorPoint=CGPointMake(0.5,1);

    minL.cornerRadius=0.5;

    minL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5);

    [self.clockView.layeraddSublayer:minL];

    self.minL= minL;

}

-(void)setHour{

    CALayer*hourL = [CALayerlayer];

    hourL.bounds=CGRectMake(0,0,3,40);

    hourL.backgroundColor = [UIColor blackColor].CGColor;

    hourL.anchorPoint=CGPointMake(0.5,1);

    hourL.cornerRadius=0.5;

    hourL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5);

    [self.clockView.layeraddSublayer:hourL];

    self.hourL= hourL;

}

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent*)event{

    //所有旋转,缩放,都是绕着锚点进行

    self.secL.transform = CATransform3DMakeRotation(M_PI, 0, 0, 1);

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end