Android Studio ListView CheckBox get selected items

I make listview with checkbox and all work great, but when i try to get selected item even one item in click on button i fail.

This my code:

        listSuacesAndOptions.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, int position, long l)
        {
            adapter.setCheckBox(position);
        }
    });

And Button:

        finishPick.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            String test = "";

            for(Item hold: adapter.getAllData()){
                if(hold.isCheckbox()){
                    test += " "  + hold.getName();
                }
            }
            Toast.makeText(SuacesAndOptions.this,"Select: " + test,Toast.LENGTH_SHORT).show();
        }
    });

What can be wrong with my code? This show me only one word "Select" nothing else even i select all checkbox in listview