Show and Hide Bottom Sheet Programmatically

To close the BottomSheetDialogFragment from inside the fragment you can call:

dismiss();

To show or hide the BottomSheetDialogFragment from the activity you can simply call:

bottomSheetDialogFragment.dismiss();//to hide itbottomSheetDialogFragment.show(getSupportFragmentManager(),tag);// to show it

Inside your onClick() of the button use: sheet.show().

Then when you want to dismiss it, use sheet.dismiss();

Here below a possible solution:

BottomSheet sheet = new BottomSheet.Builder(...).build();Button button = (Button)findViewById(R.id.mybutton);button.setOnClickListener(new OnClickListener(){    @Override    public void onClick(View v) {        //you can use isShowing() because BottomSheet inherit from Dialog class        if (sheet.isShowing()){            sheet.dismiss();        } else {            sheet.show();            }    }});

For showing the Bottom Sheet use this code:

bottomSheetInfoBehavior.setHideable(false);bottomSheetInfoBehavior.setState(BottomSheetBehavior.STATE_EXPANDED);

For Hiding the Bottom sheet use this code:

bottomSheetInfoBehavior.setHideable(true);bottomSheetInfoBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);