Viewpager2 realizes Gallery effect. After notifydatasetchanged, pagetransformer displays abnormal interface deformation

Gallery sliding effect is used in the project , Choose to use ViewPager2 Of CompositePageTransformer To achieve ,

 val compositePageTransformer = CompositePageTransformer()
                compositePageTransformer.addTransformer(MarginPageTransformer(dip2px(20f)))
                compositePageTransformer.addTransformer { view, position ->
                    logger.d("addTransformer() position ：  " + position)
                    val r = 1 - Math.abs(position)
                    view.scaleY = 0.90f + r * 0.1f
                }

There is no problem with the effect preview after writing , But the test found that when called frequently notifyDataSetChanged after , The gallery effect is deformed , When sliding left and right, the effect is restored

terms of settlement ： When ViewPager2 Of Adapter call notifyDataSetChanged perhaps notifyItemChanged When ViewPager2 Call next ：

setCurrentItem

Namely ：

mViewPager.currentItem = mCurrentPosition