Android: add view with expand animation (without blinking)

Question

I want to add a view to a view group using an expanding animation, so the added view starts very small and takes more and more space until it reaches its full size (probably

Answer 1

This might be a little simpler:

public void expand(final View view) {
    view.getLayoutParams().height = 0;

    Animation a = new Animation() {
        @Override
        protected void applyTransformation(float interpolatedTime, Transformation t)
        {
            view.getLayoutParams().height = (int)(mTargetHeight * interpolatedTime);
            view.requestLayout();
        }

        @Override
        public boolean willChangeBounds() {
            return true;
        }
    };

    a.setDuration(1000);
    view.startAnimation(a);
}