UI动图的制作

创建一个协议文件，把screen的width,height用宏定义

ifndef UI_05_02_PrefixHeader_pch

define UI_05_02_PrefixHeader_pch

define Screen_Width [[UIScreen mainScreen] bounds].size.width

define Screen_Height [[UIScreen mainScreen] bounds].size.height

endif

接着在ViewController.m文件中的interface.h声明如下对象的属性

import “ViewController.h”

@interface ViewController ()

{

UIView *animationView;

UIView *layerView;

int CATransactionCount;

UIView *keyframeView;

CALayer *CATransactionLayer;

}

@end

然后初始化animationView对象

@implementation ViewController

(void)viewDidLoad {

[super viewDidLoad];

animationView = [[UIView alloc] initWithFrame:CGRectMake(20, 20, 80, 80)];

animationView.backgroundColor = [UIColor redColor];

[self.view addSubview:animationView];

//layer那点事，layer相当于图片的图层

// CALayer *layer1 = [CALayer layer];

// layer1.frame = CGRectMake(0, 0, 40, 40);

// layer1.backgroundColor = [UIColor yellowColor].CGColor;

// [animationView.layer addSublayer:layer1];

// 接着初始化layerView

//让layer本身做动画

layerView = [[UIView alloc] initWithFrame:CGRectMake(Screen_Width/2-100, Screen_Height/2-100, 200, 200)];

[self.view addSubview:layerView];

//导入图片”1”

UIImage *image = [UIImage imageNamed:@"1"];
layerView.layer.contents = (__bridge id)(image.CGImage);
layerView.layer.contentsGravity = kCAGravityResizeAspect;
layerView.layer.contentsScale = image.scale;
CATransactionCount = 0;
//关于核心动画编程，就是给layer的属性做动画
//设置三个按钮
UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
[button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:@"做动画" forState:0];
button.frame = CGRectMake(Screen_Width-80, 20, 60, 30);
[self.view addSubview:button];

button = [UIButton buttonWithType:UIButtonTypeSystem];
[button addTarget:self action:@selector(CATransactionbuttonAction:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:@"做动画" forState:0];
button.frame = CGRectMake(Screen_Width-80, 80, 60, 30);
[self.view addSubview:button];

button = [UIButton buttonWithType:UIButtonTypeSystem];
[button addTarget:self action:@selector(keyframeAnimation:) forControlEvents:UIControlEventTouchUpInside];
[button setTitle:@"做动画" forState:0];
button.frame = CGRectMake(Screen_Width-80, 130, 60, 30);
[self.view addSubview:button];

//初始化keyframeView,不过后面那个调用是什么意思？

keyframeView = [[UIView alloc] initWithFrame:CGRectMake(100, 120, 60, 30)];

keyframeView.backgroundColor = [UIColor clearColor];

keyframeView.layer.borderColor = [UIColor grayColor].CGColor;

keyframeView.layer.borderWidth = 1.0;

[self.view insertSubview:keyframeView aboveSubview:button];

//创建一个按钮，关联的方法为CATransactionLayerAnimation

button = [UIButton buttonWithType:UIButtonTypeSystem];

[button addTarget:self action:@selector(CATransactionLayerAnimation:) forControlEvents:UIControlEventTouchUpInside];

[button setTitle:@”做动画” forState:0];

button.frame = CGRectMake(Screen_Width-80, 180, 60, 30);

[self.view addSubview:button];

//初始化CATransactionLayer

CATransactionLayer = [CALayer layer];

CATransactionLayer.frame = CGRectMake(100, 100, 50, 50);

CATransactionLayer.backgroundColor = [UIColor yellowColor].CGColor;

[self.view.layer addSublayer:CATransactionLayer];

}

//下面是按钮方法的实现

-(void)buttonAction:(UIButton *)sender{

/*

// CABasicAnimation* fadeAnim = [CABasicAnimation animationWithKeyPath:@”opacity”];

// fadeAnim.fromValue = [NSNumber numberWithFloat:1.0];

// fadeAnim.toValue = [NSNumber numberWithFloat:0.0];

// fadeAnim.duration = 1.0;

// [animationView.layer addAnimation:fadeAnim forKey:@”opacity”];

CGMutablePathRef thePath = CGPathCreateMutable();
CGPathMoveToPoint(thePath,NULL,74.0,74.0);
CGPathAddCurveToPoint(thePath,NULL,74.0,500.0,
320.0,500.0,
320.0,74.0);
CGPathAddCurveToPoint(thePath,NULL,320.0,500.0,
566.0,500.0,
566.0,74.0);

CAKeyframeAnimation * theAnimation;

// Create the animation object, specifying the position property as the key path.
theAnimation=[CAKeyframeAnimation animationWithKeyPath:@"position"];
theAnimation.path=thePath;
theAnimation.duration=5.0;

// Add the animation to the layer.
[animationView.layer addAnimation:theAnimation forKey:@"position"];
*/
/*
transform
transform.rotation
transform.translation
transform.scale
*/
//旋转
/*
CABasicAnimation *rotation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
rotation.fromValue = @0;
rotation.toValue = @(M_PI/2);
rotation.duration = 1.f;
rotation.repeatCount = FLT_MAX;
rotation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
[animationView.layer addAnimation:rotation forKey:@"vincent"];
*/

CABasicAnimation *xRotation = [CABasicAnimation animationWithKeyPath:@”transform”];

xRotation.fromValue = [NSValue valueWithCATransform3D:CATransform3DIdentity];

xRotation.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI, 1, 1, 1)];

xRotation.duration = 1.f;

xRotation.repeatCount = FLT_MAX;

xRotation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];

[animationView.layer addAnimation:xRotation forKey:@”vincent”];}

//改变大白的形态

-(void)CATransactionbuttonAction:(UIButton *)sender{

[NSTimer scheduledTimerWithTimeInterval:0.1 target:self selector:@selector(changeDabai:) userInfo:nil repeats:YES];}

//实现大白跳的速度的改变

-(void)changeDabai:(NSTimer *)sender{

UIImage *image = [UIImage imageNamed:@”1”];

CGRect rect = CGRectZero;

if (CATransactionCount > 5) {

CATransactionCount = 0;

}

switch (CATransactionCount) {

case 0:

{

rect = CGRectMake(0, 0, 1, 0.75);

}

break;

case 1:

{

rect = CGRectMake(0, 0, 1, 0.5);

}

break;

case 2:

{

rect = CGRectMake(0, 0.25, 1, 0.5);

}

break;

case 3:

{

rect = CGRectMake(0, 0.25, 1, 0.5);

}

break;

case 4:

{

rect = CGRectMake(0, 0.5, 1, 1);

}

break;

case 5:

{

rect = CGRectMake(0, 0.25, 1, 1);

}

break;

default:
break;
}

CATransactionCount++;

layerView.layer.contents = (__bridge id)image.CGImage;
layerView.layer.contentsCenter = rect;

}

-(void)keyframeAnimation:(UIButton *)sender{

CAKeyframeAnimation *keyAnimation = [CAKeyframeAnimation animationWithKeyPath:@”transform.scale.y”];

keyAnimation.values = @[@0,@-10,@10,@-10,@0];

// keyAnimation.path

keyAnimation.duration = 0.4;

keyAnimation.additive = YES;

[keyframeView.layer addAnimation:keyAnimation forKey:@”shake”];

}

-(void)CATransactionLayerAnimation:(UIButton *)sender{

[CATransaction begin];

//设置动画时间

[CATransaction setValue:@1.0f forKey:kCATransactionAnimationDuration];

//改变layer位置

CGFloat pointY = CATransactionLayer.position.y> 250 ? 125:425;

CATransactionLayer.position = CGPointMake(CATransactionLayer.position.x, pointY);

[CATransaction commit];

}

(void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of a
4000
ny resources that can be recreated.

}



@end

效果如图