//// ViewController.m// 時(shí)鐘//// Created by llkj on 2017/8/29.// Copyright © 2017年 LayneCheung. All rights reserved.//#import "ViewController.h"http://每一秒旋轉(zhuǎn)多少度#define perSecA 6//每一分旋轉(zhuǎn)多少度#define perMinA 6//每一小時(shí)旋轉(zhuǎn)多少度#define perHourA 30//每一分時(shí)針旋轉(zhuǎn)的度數(shù)#define perMinHour 0.5//角度轉(zhuǎn)弧度#define angle2Rad(angle) ((angle) / 180.0 * M_PI)@interface ViewController ()@property (weak, 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]; [self setHour]; [self setMin]; [self setSec]; [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(timeChange) userInfo:nil repeats:YES]; [self timeChange];}- (void)timeChange{ //獲取當(dāng)前秒 NSCalendar *cal = [NSCalendar currentCalendar]; NSDateComponents *cmp = [cal components:NSCalendarUnitSecond | NSCalendarUnitMinute | NSCalendarUnitHour fromDate:[NSDate date]]; NSInteger curSec = cmp.second + 1; NSInteger curMin = cmp.minute; NSInteger curHour = cmp.hour; //秒針開始旋轉(zhuǎn) //計(jì)算秒針當(dāng)前旋轉(zhuǎn)的角度 // angle = 當(dāng)前多少秒 * 每一秒旋轉(zhuǎn)多少度 CGFloat secA = curSec * perSecA; //旋轉(zhuǎn)方向是Z軸 self.secL.transform = CATransform3DMakeRotation(angle2Rad(secA), 0, 0, 1); //分針開始旋轉(zhuǎn) //計(jì)算分針當(dāng)前旋轉(zhuǎn)的角度 // angle = 當(dāng)前多少分 * 每一分旋轉(zhuǎn)多少度 CGFloat minA = curMin * perMinA; self.minL.transform = CATransform3DMakeRotation(angle2Rad(minA), 0, 0, 1); //時(shí)針開始旋轉(zhuǎn) //計(jì)算時(shí)針當(dāng)前旋轉(zhuǎn)的角度 // angle = 當(dāng)前多少時(shí) * 每一小時(shí)旋轉(zhuǎn)多少度 CGFloat hourA = curHour * perHourA + curMin * perMinHour; self.hourL.transform = CATransform3DMakeRotation(angle2Rad(hourA), 0, 0, 1);}//添加秒針- (void)setSec{ CALayer *secL = [CALayer layer]; secL.bounds = CGRectMake(0, 0, 1, 80); secL.backgroundColor = [UIColor redColor].CGColor; //繞著錨點(diǎn)旋轉(zhuǎn) secL.anchorPoint = CGPointMake(0.5, 1); secL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5); [self.clockView.layer addSublayer:secL]; self.secL = secL;}//添加分針- (void)setMin{ CALayer *minL = [CALayer layer]; minL.bounds = CGRectMake(0, 0, 3, 70); minL.cornerRadius = 1.5; minL.backgroundColor = [UIColor blackColor].CGColor; minL.anchorPoint = CGPointMake(0.5, 1); minL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5); [self.clockView.layer addSublayer:minL]; self.minL = minL;}//添加時(shí)針- (void)setHour{ CALayer *hourL = [CALayer layer]; hourL.bounds = CGRectMake(0, 0, 3, 60); hourL.backgroundColor = [UIColor blackColor].CGColor; hourL.anchorPoint = CGPointMake(0.5, 1); hourL.position = CGPointMake(self.clockView.bounds.size.width * 0.5, self.clockView.bounds.size.height * 0.5); [self.clockView.layer addSublayer:hourL]; self.hourL = hourL;}- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}@end