概述

程式碼

    private Button btn_open;
    private boolean status=false;

        btn_open.setText("open");
        btn_open= (Button) findViewById(R.id.btn_open);
    }
        public void open(View v){
            if(!status){
                btn_open.setText("close");
                status=true;
            }else{
                btn_open.setText("open");
                status=false;
            }
    }