faimin

- (void)zd_shake:(CGFloat)range {
    CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"transform.translation.y"];
    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
    animation.duration = 0.5;
    animation.values = @[@(-range), @(range), @(-range/2), @(range/2), @(-range/5), @(range/5), @(0)];
    animation.repeatCount = CGFLOAT_MAX;
    [self.layer addAnimation:animation forKey:@"shake"];
}

faimin

- (CGFloat)calculateDynamicHeightWithMaxWidth:(CGFloat)maxWidth {
    self.translatesAutoresizingMaskIntoConstraints = NO;
    CGFloat viewMaxWidth = maxWidth ? : CGRectGetWidth([UIScreen mainScreen].bounds);
    NSLayoutConstraint *widthConstraint = [NSLayoutConstraint constraintWithItem:self attribute:NSLayoutAttributeWidth relatedBy:NSLayoutRelationEqual toItem:nil attribute:NSLayoutAttributeNotAnAttribute multiplier:1.0 constant:viewMaxWidth];
    
    [self addConstraint:widthConstraint];
    CGSize fittingSize = [self systemLayoutSizeFittingSize:UILayoutFittingCompressedSize];
    [self removeConstraint:widthConstraint];
    
    return fittingSize.height;