BottomSheetDialog

禁止滑动关闭

private var behavior: BottomSheetBehavior<View>
behavior = BottomSheetBehavior.from(findViewById(R.id.design_bottom_sheet))
behavior.setBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
            override fun onStateChanged(bottomSheet: View, newState: Int) {
                if (newState == BottomSheetBehavior.STATE_DRAGGING) {
                    behavior.state = BottomSheetBehavior.STATE_EXPANDED
                }
            }

            override fun onSlide(bottomSheet: View, slideOffset: Float) {

            }
        })

禁止折叠弹出

override fun show() {
   super.show()
   behavior.state = BottomSheetBehavior.STATE_EXPANDED
}