iOS-类似微信摇一摇

首先，一直以为摇一摇的功能实现好高大上，结果百度了。我自己也模仿写了一个demo。主要代码如下：

新建一个项目，名字为AnimationShake。

主要代码：

- (void)motionBegan:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
}

- (void)motionEnded:(UIEventSubtype)motion withEvent:(UIEvent *)event
{
    if (motion == UIEventSubtypeMotionShake )
    {
        // User was shaking the device. Post a notification named "shake".
        [[NSNotificationCenter defaultCenter] postNotificationName:@"shake" object:self];
    }
}

- (void)motionCancelled:(UIEventSubtype)motion withEvent:(UIEvent *)event
{    
}

-(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+44+20)];
    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"];
}

源码可以去我的github网站：https://github.com/linxiu下载看看。谢谢，欢迎大家指正，我是新手。