Hello, I would like to animate the height of a View to make it look like it is expanding.
My current implementation involves a custom Animation class that invokes getLayoutParams() and changes the height variable in the applyTransformation() method. It looks like this: @Override protected void applyTransformation(float interpolatedTime, Transformation t) { super.applyTransformation(interpolatedTime, t); LayoutParams layout = mActor.getLayoutParams(); int newHeight = fromHeight + (int) ((toHeight-fromHeight) * interpolatedTime); layout.height = newHeight; mActor.requestLayout(); } However, animations are choppy because whenever I invoke requestLayout(), it layouts the entire view hierarchy, which is expensive, resulting in choppy animations (eg 10fps). I have tried forceLayout(), hoping that it would only layout a portion of the view hierarchy, however it seems to do nothing... Please give me some advice on how I can implement this sort of animations correctly. Thank you. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.