iOS 按键 抖动

- (void)shake{
    
    CABasicAnimation *moveAnimation = [CABasicAnimation animationWithKeyPath:@"position.x"];
    moveAnimation.byValue = [NSNumber numberWithFloat:50.0];
    // Here's the important part
    [moveAnimation setDuration:0.1];
    [moveAnimation setBeginTime:0.0];
    moveAnimation.fillMode = kCAFillModeForwards;
    
    CABasicAnimation *borderWidthAnimation = [CABasicAnimation animationWithKeyPath:@"borderWidth"];
    [borderWidthAnimation setFromValue:[NSNumber numberWithFloat:0.0]];
    [borderWidthAnimation setToValue:[NSNumber numberWithFloat:20.0]];
    // Here's the important part
    [borderWidthAnimation setDuration:10.0];
    [borderWidthAnimation setBeginTime:5.0];
    //kCAMediaTimingFunctionLinear kCAMediaTimingFunctionEaseInEaseOut
    borderWidthAnimation.timingFunction=[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    
    CASpringAnimation *springAnimation = [CASpringAnimation animationWithKeyPath:@"position.x"];
    [springAnimation setDuration: 1.0];
    [springAnimation setBeginTime:0.1];
    springAnimation.stiffness = 100;
    springAnimation.damping = 10;
    springAnimation.initialVelocity = 15.0;

    springAnimation.byValue = [NSNumber numberWithFloat:-50.0];
    
    CAAnimationGroup *group = [CAAnimationGroup animation];
    [group setDuration:1.0];
    
    [group setAnimations:[NSArray arrayWithObjects:moveAnimation, springAnimation, nil]];
    
    [self.ViewTest.layer addAnimation:group forKey:nil];
    self.ViewTest.layer.borderColor = [UIColor yellowColor].CGColor;
}

//方法二:

//        CABasicAnimation *shakeAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.y"];
        CABasicAnimation *shakeAnimation = [CABasicAnimation animationWithKeyPath:@"transform.translation.x"];
        shakeAnimation.duration = 0.25f;
        
//        shakeAnimation.duration = 0.5f;
        
        shakeAnimation.fromValue = [NSNumber numberWithFloat:-5];
        shakeAnimation.toValue = [NSNumber numberWithFloat:5];
        shakeAnimation.autoreverses = YES;
        [_imageView.layer addAnimation:shakeAnimation forKey:nil];