Expand ListView item with animation

Question

I have a ListView. Initially, the ListView contains some data. When the user clicks on an item, another layout will be dynamically added to that it

Answer 1

My use case is just to have more or less text displayed. So to toggle state of a listview item from 2-6 max lines for instance one can do this. And its also animated. Animation dont look exactly smooth but...

                            if(!textDescriptionLenghtToggle) { // simple boolean toggle
                                ObjectAnimator animation = ObjectAnimator.ofInt(
                                        textViewContainingDescription,
                                        "maxLines",
                                        6);
                                animation.setDuration(300);
                                animation.start();
                            } else {
                                ObjectAnimator animation = ObjectAnimator.ofInt(
                                        textViewContainingDescription,
                                        "maxLines",
                                        2);
                                animation.setDuration(300);
                                animation.start();
                            }