动画效果提供了状态或页面转换时流畅的用户体验,在iOS系统中,咱们不需要自己编写绘制动画的代码,Core Animation提供了丰富的api来实现你需要的动画效果。
UIKit只用UIView来展示动画,动画支持UIView下面的这些属性改变:
1、commitAnimations方式使用UIView动画
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
- [button setTitle:@"改变" forState:UIControlStateNormal];
- button.frame = CGRectMake(10, 10, 60, 40);
- [button addTarget:self action:@selector(changeUIView) forControlEvents:UIControlEventTouchUpInside];
- [self.view addSubview:button];
- }
- - (void)changeUIView{
- [UIView beginAnimations:@"animation" context:nil];
- [UIView setAnimationDuration:1.0f];
- [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
- [UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
- [UIView commitAnimations];
- }
下面是点击改变后的效果(两种):
![](http://img-my.csdn.net/uploads/201301/14/1358154251_1234.png)
![](http://img-my.csdn.net/uploads/201301/14/1358154352_3552.png)
动画的常量有一下四种
- UIViewAnimationTransitionNone,
- UIViewAnimationTransitionFlipFromLeft,
- UIViewAnimationTransitionFlipFromRight,
- UIViewAnimationTransitionCurlUp,
- UIViewAnimationTransitionCurlDown,
1.2 交换本视图控制器中2个view位置
[self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
先添加两个view ,一个redview 一个yellowview
- - (void)viewDidLoad
- {
- [super viewDidLoad];
- UIView *redView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
- redView.backgroundColor = [UIColor redColor];
- [self.view addSubview:redView];
- UIView *yellowView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
- yellowView.backgroundColor = [UIColor yellowColor];
- [self.view addSubview:yellowView];
- UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
- [button setTitle:@"改变" forState:UIControlStateNormal];
- button.frame = CGRectMake(10, 10, 300, 40);
- [button addTarget:self action:@selector(changeUIView) forControlEvents:UIControlEventTouchUpInside];
- [self.view addSubview:button];
- UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
- [button1 setTitle:@"改变1" forState:UIControlStateNormal];
- button1.frame = CGRectMake(10, 60, 300, 40);
- [button1 addTarget:self action:@selector(changeUIView1) forControlEvents:UIControlEventTouchUpInside];
- [self.view addSubview:button1];
- }
- - (void)changeUIView1{
- [UIView beginAnimations:@"animation" context:nil];
- [UIView setAnimationDuration:1.0f];
- [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
- [UIView setAnimationTransition:UIViewAnimationTransitionCurlDown forView:self.view cache:YES];
- // 交换本视图控制器中2个view位置
- [self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
- [UIView commitAnimations];
- }
![](http://img-my.csdn.net/uploads/201301/14/1358154891_2024.png)
这样看起来就像两页一样了。
1.3 、 [UIView setAnimationDidStopSelector:@selector(animationFinish:)];
在commitAnimations消息之前,可以设置动画完成后的回调,设置方法是:
[UIView setAnimationDidStopSelector:@selector(animationFinish:)];
2、使用:CATransition
- - (void)changeUIView2{
- CATransition *transition = [CATransition animation];
- transition.duration = 2.0f;
- transition.type = kCATransitionPush;
- transition.subtype = kCATransitionFromTop;
- [self.view exchangeSubviewAtIndex:1 withSubviewAtIndex:0];
- [self.view.layer addAnimation:transition forKey:@"animation"];
- }
淡化、推挤、揭开、覆盖
NSString * const kCATransitionFade;
NSString * const kCATransitionMoveIn;
NSString * const kCATransitionPush;
NSString * const kCATransitionReveal;
这四种,transition.subtype
也有四种
NSString * const kCATransitionFromRight;
NSString * const kCATransitionFromLeft;
NSString * const kCATransitionFromTop;
NSString * const kCATransitionFromBottom;
![](http://img-my.csdn.net/uploads/201301/15/1358211158_5255.png)
![](http://img-my.csdn.net/uploads/201301/15/1358211332_1649.png)
2.2 私有的类型的动画类型:
立方体、吸收、翻转、波纹、翻页、反翻页、镜头开、镜头关
- animation.type = @"cube"
- animation.type = @"suckEffect";
- animation.type = @"oglFlip";//不管subType is "fromLeft" or "fromRight",official只有一种效果
- animation.type = @"rippleEffect";
- animation.type = @"pageCurl";
- animation.type = @"pageUnCurl"
- animation.type = @"cameraIrisHollowOpen ";
- animation.type = @"cameraIrisHollowClose ";
![](http://img-my.csdn.net/uploads/201301/15/1358213093_4460.png)
2.3 CATransition的 startProgress endProgress属性
这两个属性是float类型的。
可以控制动画进行的过程,可以让动画停留在某个动画点上,值在0.0到1.0之间。endProgress要大于等于startProgress。
可以控制动画进行的过程,可以让动画停留在某个动画点上,值在0.0到1.0之间。endProgress要大于等于startProgress。
比如上面的立方体转到,可以设置endProgress= 0.5,让动画停留在转动一般的位置。
上面这些私有的动画效果,在实际应用中要谨慎使用。因为在app store审核时可能会以为这些动画效果而拒绝通过。
3、UIView的 + (void)animateWithDuration
:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion
方法。
这个方法是在iOS4.0之后才支持的。
比 1 里的UIView的方法简洁方便使用。
DidView里添加moveView。
- moveView = [[UIView alloc] initWithFrame:CGRectMake(10, 180, 200, 40)];
- moveView.backgroundColor = [UIColor blackColor];
- [self.view addSubview:moveView];
- - (void)changeUIView3{
- [UIView animateWithDuration:3 animations:^(void){
- moveView.frame = CGRectMake(10, 270, 200, 40);
- }completion:^(BOOL finished){
- UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 40, 40)];
- label.backgroundColor = [UIColor blackColor];
- [self.view addSubview:label];
- }];
- }
3.2、 animateWithDuration的嵌套使用
- - (void)changeUIView3{
- [UIView animateWithDuration:2
- delay:0
- options:UIViewAnimationOptionCurveEaseOut animations:^(void){
- moveView.alpha = 0.0;
- }completion:^(BOOL finished){
- [UIView animateWithDuration:1
- delay:1.0
- options:UIViewAnimationOptionAutoreverse | UIViewAnimationOptionRepeat
- animations:^(void){
- [UIView setAnimationRepeatCount:2.5];
- moveView.alpha = 1.0;
- }completion:^(BOOL finished){
- }];
- }];
- }
文中例子的代码:AnimateDemo