利用UITabBarController实现，在tabbar的 didSelectItem 代理里添加动画效果。
@interfaceMainTabbarVC()<UITabBarControllerDelegate>
@property(nonatomic,assign)NSInteger indexFlag;//记录上一次点击tabbar，使用时，记得先在init或viewDidLoad里 初始化 = 0
@end
-(void)tabBar:(UITabBar*)tabBar didSelectItem:(UITabBarItem*)item{
NSInteger index=[self.tabBar.items indexOfObject:item];
if(index!=self.indexFlag){//执行动画
NSMutableArray*arry=[NSMutableArray array];
for(UIView*btninself.tabBar.subviews){
if([btn isKindOfClass:NSClassFromString(@"UITabBarButton")]){
[arry addObject:btn];
}
}
//添加动画//---将下面的代码块直接拷贝到此即可---
self.indexFlag=index;
}
}
1、先放大，再缩小
//放大效果，并回到原位
CABasicAnimation*animation=[CABasicAnimation animationWithKeyPath:@"transform.scale"];
//速度控制函数，控制动画运行的节奏
animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.duration=0.2;//执行时间
animation.repeatCount=1;//执行次数
animation.autoreverses=YES;//完成动画后会回到执行动画之前的状态
animation.fromValue=[NSNumber numberWithFloat:0.7];//初始伸缩倍数
animation.toValue=[NSNumber numberWithFloat:1.3];//结束伸缩倍数[[arry[index]layer]addAnimation:animation forKey:nil];
2、Z轴旋转
//z轴旋转180度
CABasicAnimation*animation=[CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
//速度控制函数，控制动画运行的节奏
animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.duration=0.2;//执行时间
animation.repeatCount=1;//执行次数animation.removedOnCompletion=YES;
animation.fromValue=[NSNumber numberWithFloat:0];//初始伸缩倍数
animation.toValue=[NSNumber numberWithFloat:M_PI];//结束伸缩倍数[[arry[index]layer]addAnimation:animation forKey:nil];
3、放大并保持
//放大效果
CABasicAnimation*animation=[CABasicAnimation animationWithKeyPath:@"transform.scale"];
//速度控制函数，控制动画运行的节奏
animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.duration=0.2;//执行时间
animation.repeatCount=1;//执行次数animation.removedOnCompletion=NO;
animation.fillMode=kCAFillModeForwards;//保证动画效果延续
animation.fromValue=[NSNumber numberWithFloat:1.0];//初始伸缩倍数
animation.toValue=[NSNumber numberWithFloat:1.15];//结束伸缩倍数[[arry[index]layer]addAnimation:animation forKey:nil];//移除其他tabbar的动画for(inti=0;i<arry.count;i++){
if(i!=index){
[[arry[i]layer]removeAllAnimations];
}
}
4、 y轴位移
//向上移动
CABasicAnimation*animation=[CABasicAnimation animationWithKeyPath:@"transform.translation.y"];
//速度控制函数，控制动画运行的节奏
animation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
animation.duration=0.2;//执行时间
animation.repeatCount=1;//执行次数
animation.removedOnCompletion=YES;
animation.fromValue=[NSNumber numberWithFloat:0];//初始伸缩倍数
animation.toValue=[NSNumber numberWithFloat:-10];//结束伸缩倍数[[arry[index]layer]addAnimation:animation forKey:nil];
