scrollview setOnScrollChangeListener을 활용하여 view 나타나게 하기
제목이 넘 길다. binding.mainDrawerIcl.mainFab.alpha = 0f binding.mainDrawerIcl.mainScrollview.setOnScrollChangeListener(mScrollViewListener) private val mScrollViewListener = object : NestedScrollView.OnScrollChangeListener{ override fun onScrollChange(v: NestedScrollView?, scrollX: Int, scrollY: Int, oldScrollX: Int, oldScrollY: Int) { binding.mainDrawerIcl.mainFab.alpha = getAlpahForFloatingButton(s..