//
// MJViewController.m// 06-核心动画02-CAKeyframeAnimation//// Created by apple on 14-4-21.// Copyright (c) 2014年 itcast. All rights reserved.//#import "MJViewController.h"@interface MJViewController ()@property (weak, nonatomic) IBOutlet UIView *redView;@end@implementation MJViewController- (void)viewDidLoad{ [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib.}- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{ CAKeyframeAnimation *anim = [CAKeyframeAnimation animation]; anim.keyPath = @"position"; anim.removedOnCompletion = NO; anim.fillMode = kCAFillModeForwards; anim.duration = 2.0; // 创建一个路径 CGMutablePathRef path = CGPathCreateMutable(); // 添加一个圆到这个路径 CGPathAddEllipseInRect(path, NULL, CGRectMake(100, 100, 200, 200)); anim.path = path; // 释放这个路径（Create出来的对象都需要释放） CGPathRelease(path); // 设置动画的执行节奏 // kCAMediaTimingFunctionEaseInEaseOut : 一开始比较慢, 中间会加速, 临近结束的时候, 会变慢 anim.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]; // 监听动画的执行 anim.delegate = self; [self.redView.layer addAnimation:anim forKey:nil];}#pragma mark - 动画的代理方法#pragma mark 动画开始的时候调用- (void)animationDidStart:(CAAnimation *)anim{ NSLog(@"animationDidStart");}#pragma mark 动画结束的时候调用- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag{ NSLog(@"animationDidStop");}- (void)testMove{ // CABasicAnimation fromValue --> toValue CAKeyframeAnimation *anim = [CAKeyframeAnimation animation]; anim.keyPath = @"position"; NSValue *v1 = [NSValue valueWithCGPoint:CGPointZero]; NSValue *v2 = [NSValue valueWithCGPoint:CGPointMake(100, 0)]; NSValue *v3 = [NSValue valueWithCGPoint:CGPointMake(100, 200)]; NSValue *v4 = [NSValue valueWithCGPoint:CGPointMake(0, 200)]; anim.values = @[v1, v2, v3, v4]; // anim.keyTimes = @[@(0.5), @(0.25), @(0.25)]; anim.duration = 2.0; anim.removedOnCompletion = NO; anim.fillMode = kCAFillModeForwards; [self.redView.layer addAnimation:anim forKey:nil];}@end