Why does the fragment change animation slow down?

Question

Java

Hello!
I use the following code to animate the change of fragments:

fTrans = getFragmentManager().beginTransaction();
                //fTrans.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
                //fTrans.setCustomAnimations(R.animator.prev_fragm, R.animator.new_fragm);
                fTrans.replace(R.id.frgmCont, signInFrag);
                fTrans.addToBackStack(null);
                fTrans.commit();

However, the setTransition and setCustomAnimations methods are terribly slow when I start the application. Why is this happening, perhaps there are ways to deal with it?
Thank you!

Answer 1

setTransition() and setCustomAnimations() are two different ways to start an animation.
At a minimum, they should not be used together.
Read more here: daniel-codes.blogspot.ru/2012/06/fragment-transact...
I had a case where standard animations (TRANSIT_FRAGMENT_OPEN) slowed down on an ancient device (API 9, Android 2.3). I had to add an OS version check to the code and disable animations (up to version 15 of the API).