bootom sheet fragment BottomSheetBehavior

__WalletSwitcherDialogFragment.java

    /**
     * @param dialog
     */
    protected void setupDialogBehavior(Dialog dialog) {
        dialog.setOnShowListener(dialog1 -> {

            BottomSheetDialog d = (BottomSheetDialog) dialog;
            View v = d.findViewById(android.support.design.R.id.design_bottom_sheet);

            if (v != null) {
                BottomSheetBehavior behavior = BottomSheetBehavior.from(v);
                behavior.setSkipCollapsed(true);
                behavior.setHideable(isCancelable());
                d.setOnKeyListener((di, keyCode, event) -> {
                    if (event.getKeyCode() == KeyEvent.KEYCODE_BACK) {
                        setCancelable(true);
                        dialog.onBackPressed();
                        return true;
                    }
                    return false;
                });
            }
        });

    }