Android If CheckBox checked show Button dont work

I have worked for a long time on this problem. I want to show a Button if CheckBox is checked. I have CheckBoxes in number of columns in my DataBase. And If the Checkbox is unchecked i want to hide this Button. I see in this Forum this way, but it wasnt work right in my program.

        btn.setVisibility(View.GONE); 
        btn.setVisibility(View.VISIBLE);

And my program shows:

    private void AddColum(int count) {
    final LinearLayout ll = (LinearLayout)findViewById(R.id.ListLayout);
    for(int i=1; i<=count; i++) {
        final int id_ = createCheckBox(i, ll);
        CheckBox checkbox = (CheckBox) findViewById(id_);
        final IsCheck check = new IsCheck();
        checkbox.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Button open = createButton(id_,ll);
                    if (check.getCheck()) {
                        open.setVisibility(View.VISIBLE);
                        open.setText("Ac");
                        open.setOnClickListener(new View.OnClickListener() {
                            public void onClick(View view) {
                                Intent myIntent = new Intent(ListActivity.this, ShowActivity.class);
                                myIntent.putExtra("ID", id_);
                                ListActivity.this.startActivity(myIntent);

                            }
                        });
                        check.setCheck(false);
                    } else {
                        open.setVisibility(View.GONE);
                        check.setCheck(true);
                    }
                }
        });
    }

}