摇一摇代码实现

 
1. 增加一个shake的通知
［NSNotificationCenter defaultCenter] addObserver:self selector:@selector(addAnimations) name:@"shake" object:nil];
2. 当得到通知时处罚addAnimations 动作
#pragma mark - 摇一摇动画效果
- (void)addAnimations
{
    
    AudioServicesPlaySystemSound (soundID);
    
    //让imgup上下移动
    CABasicAnimation *translation2 = [CABasicAnimation animationWithKeyPath:@"position"];
    translation2.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    translation2.fromValue = [NSValue valueWithCGPoint:CGPointMake(160, 115)];
    translation2.toValue = [NSValue valueWithCGPoint:CGPointMake(160, 40)];
    translation2.duration = 0.4;
    translation2.repeatCount = 1;
    translation2.autoreverses = YES;
    
    //让imagdown上下移动
    CABasicAnimation *translation = [CABasicAnimation animationWithKeyPath:@"position"];
    translation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    translation.fromValue = [NSValue valueWithCGPoint:CGPointMake(160, 345)];
    translation.toValue = [NSValue valueWithCGPoint:CGPointMake(160, 420)];
    translation.duration = 0.4;
    translation.repeatCount = 1;
    translation.autoreverses = YES;
    
    [imgDown.layer addAnimation:translation forKey:@"translation"];
    [imgUp.layer addAnimation:translation2 forKey:@"translation2"];
    
// [aiLoad stopAnimating];
// aiLoad.hidden=YES;
    
}