CoreAnimation

    CABasicAnimation *cornerAnim = [CABasicAnimation animationWithKeyPath:@"cornerRadius"];
    cornerAnim.fromValue = @(0.f);
    cornerAnim.toValue = @(50.f);
    cornerAnim.duration = 0.5f;
    [self.redView.layer addAnimation:cornerAnim forKey:@"cornerRadius"];
    
    self.redView.layer.cornerRadius = 50.f;
    
    [UIView animateWithDuration:1.0f animations:^{
        self.redView.transform = CGAffineTransformMakeRotation(M_PI);
    }];