1、CALayer一般作为UIView的容器而使用
2、CALayer是一个管理着图片载体（image-based content）的层结构
3、直接修改单独创建出的CALayer的属性可以触发隐式动画
4、UIView中的CALayer动画必须显式触发才能生效
swift3.0
基础动画代码段
let currentFrame = feedView.frame
let baseAnimation = CABasicAnimation(keyPath: "bounds")
baseAnimation.fromValue = NSValue(cgRect: currentFrame)
baseAnimation.toValue = NSValue(cgRect: CGRect(x: currentFrame.size.width / 2, y: currentFrame.size.height / 2, width: 0, height: 0))
baseAnimation.duration = 0.4
feedView.layer.add(baseAnimation, forKey: "bounds")
举例：进度条
//
// GA_ProgressView.swift
// GA_AVFoundation_Swift
//
// Created by houjianan on 15/10/21.
// Copyright © 2015年 houjianan. All rights reserved.
//
import UIKit
class GA_ProgressView: UIView {
var myLayer: CALayer!
var currentWidth: CGFloat!
override init(frame: CGRect) {
super.init(frame: frame)
print(frame)
myLayer = CALayer()
myLayer.backgroundColor = UIColor.orangeColor().CGColor
self.layer.addSublayer(myLayer)
self.currentWidth = frame.size.width
}
var progress: CGFloat {
get {
return self.progress
}
set {
if newValue <= 0 {
self.myLayer.frame = CGRectMake(0, 0, 0, self.frame.size.height)
} else if newValue >= 1 {
self.myLayer.frame = CGRectMake(0, 0, self.currentWidth, self.frame.size.height)
} else {
self.myLayer.frame = CGRectMake(0, 0, self.currentWidth * newValue, self.frame.size.height)
}
}
}
func addTimer(hander: () -> ()) {
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
进度条实现实例和组动画实现
//
// CALayerViewController.swift
// GA_AVFoundation_Swift
//
// Created by houjianan on 15/10/21.
// Copyright © 2015年 houjianan. All rights reserved.
//
import UIKit
class CALayerViewController: UIViewController {
var progressView: GA_ProgressView!
var myLayer: CALayer!
override func viewDidLoad() {
//进度条
setupProgressView()
//动画合成
basicAnimationAction()
}
func basicAnimationAction() {
let image1 = UIImage(named: "桌面不能删.jpg")
myLayer = CALayer()
myLayer.frame = self.view.frame
view.layer.addSublayer(myLayer)
self.myLayer.contents = image1?.CGImage
//两秒之后执行
self.performSelector("layerAction", withObject: nil, afterDelay: 2)
}
func layerAction() {
let image2 = UIImage(named: "imageName.jpg")
//contents属性
let basicAnimation_contents = CABasicAnimation(keyPath: "contents")
basicAnimation_contents.fromValue = myLayer.contents
basicAnimation_contents.toValue = image2?.CGImage
basicAnimation_contents.duration = 3.0
basicAnimation_contents.repeatCount = 1
myLayer.contents = image2?.CGImage
//bounds属性
let basicAnimation_bounds = CABasicAnimation(keyPath: "bounds")
basicAnimation_bounds.fromValue = NSValue(CGRect: myLayer.bounds)
basicAnimation_bounds.toValue = NSValue(CGRect: CGRectMake(100, 100, 100, 100))
basicAnimation_bounds.duration = 3.0
myLayer.bounds = CGRectMake(100, 100, 100, 100)
//动画组
let groupAnimation = CAAnimationGroup()
groupAnimation.duration = 3.0
groupAnimation.animations = [basicAnimation_bounds, basicAnimation_contents]
myLayer.addAnimation(groupAnimation, forKey: nil)
// myLayer.addAnimation(basicAnimation_contents, forKey: nil)
// myLayer.addAnimation(basicAnimation_bounds, forKey: nil)
}
func setupProgressView() {
progressView = GA_ProgressView(frame: CGRectMake(30, 30, 200, 3))
self.view.addSubview(progressView)
let timer = NSTimer(timeInterval: 1, target: self, selector: "timerAction", userInfo: nil, repeats: true)
NSRunLoop.mainRunLoop().addTimer(timer, forMode: NSDefaultRunLoopMode)
timer.fireDate = NSDate.distantPast()
}
func timerAction() {
self.progressView.progress = CGFloat(Double(randomCustom(0, max: 100)) / Double(100.0))
}
// MARK: 随机数生成
func randomCustom(min: Int, max: Int) -> Int {
// [min, max) [0, 100)
// var x = arc4random() % UInt32(max);
// return Int(x)
// [min, max）
let y = arc4random() % UInt32(max) + UInt32(min)
return Int(y)
}
}
+ (void)animationWithView:(UIButton*)button {
CGPathRef beginPath = [ UIBezierPath bezierPathWithRect:CGRectMake(0, 0, 0, CGRectGetHeight(button.frame))].CGPath;
CGPathRef endPath = [ UIBezierPath bezierPathWithRect:CGRectMake(0, 0, CGRectGetWidth(button.frame), CGRectGetHeight(button.frame))].CGPath;
CAShapeLayer* layer = [ CAShapeLayer layer];
// layer.fillColor = [ UIColor orangeColor].CGColor;
layer.path = beginPath;
button.layer.mask = layer;
CABasicAnimation* animation = [ CABasicAnimation animationWithKeyPath:@"path"];
animation.duration = 3;
// animation.beginTime = CACurrentMediaTime() + 1;
animation.fromValue = (__bridge id _Nullable)(layer.path);
animation.toValue = (__bridge id _Nullable)(endPath);
// animation.removedOnCompletion = NO;
// animation.fillMode = kCAFillModeBackwards;
[layer addAnimation:animation forKey:@"layerPaht"];
layer.path = endPath;
}
输入账号密码错误的时候抖动窗口提示
http://stackoverflow.com/questions/3844557/uiview-shake-animation
- (void)shake
{
CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
animation.duration = 0.5;
animation.delegate = self;
animation.fillMode = kCAFillModeForwards;
animation.removedOnCompletion = YES;
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
NSMutableArray* values = [[NSMutableArray alloc] init];
int steps = 100;
double position = 0;
float e = 2.71;
for (int t = 0; t < steps; t++)
{
position = 10 * pow(e, -0.022 * t) * sin(0.12 * t);
NSValue* value = [NSValue valueWithCGPoint:CGPointMake([self center].x - position, [self center].y)];
DDLogInfo(@"Value: %@", value);
[values addObject:value];
}
animation.values = values;
[[self layer] addAnimation:animation forKey:@"position"];
}
-(void)shakescreen
{
//Shake screen
CGFloat t = 5.0;
CGAffineTransform translateRight = CGAffineTransformTranslate(CGAffineTransformIdentity, t, t);
CGAffineTransform translateLeft = CGAffineTransformTranslate(CGAffineTransformIdentity, -t, -t);
self.view.transform = translateLeft;
[UIView animateWithDuration:0.05 delay:0.0 options:UIViewAnimationOptionAutoreverse|UIViewAnimationOptionRepeat animations:^
{
[UIView setAnimationRepeatCount:2.0];
self.view.transform = translateRight;
} completion:^(BOOL finished)
{
if (finished)
{
[UIView animateWithDuration:0.05 delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^
{
self.view.transform = CGAffineTransformIdentity;
}
completion:NULL];
}
}];
}
extension UIImageView{
func vibrate(){
let animation = CABasicAnimation(keyPath: "position")
animation.duration = 0.05
animation.repeatCount = 5
animation.autoreverses = true
animation.fromValue = NSValue(CGPoint: CGPointMake(self.center.x - 2.0, self.center.y))
animation.toValue = NSValue(CGPoint: CGPointMake(self.center.x + 2.0, self.center.y))
self.layer.addAnimation(animation, forKey: "position")
}
}
@implementation UIView (DUExtensions)
- (void) shake {
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"transform.translation.x"];
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
animation.duration = 0.6;
animation.values = @[ @(-20), @(20), @(-20), @(20), @(-10), @(10), @(-5), @(5), @(0) ];
[self.layer addAnimation:animation forKey:@"shake"];
}
@end