java - 我的程序如何随机按下按钮？

Question

我正在尝试制作一款游戏，其中按钮会亮起，并且用户必须在给定时间内按下按钮。

目前，我的程序有 12 个可以执行某些操作的按钮。我试图让程序随机调用这些按钮。到目前为止，我只有 12 个按钮，当用户按下这些按钮时，它们只会更改文本。

现在我需要一种方法来制作它，以便它们被随机地按下程序本身而不是用户。关于如何在 java 中完成此操作有什么想法吗？

// **** Panels for buttons ****
        JPanel panelButtons = new JPanel();                         // making the panel for the buttons
        panelButtons.setLayout(new GridLayout(3, 4));               // setting the layout of the buttons to 3x4 as shown above

        b1 = new JButton(" ⃝");                                     // creating button and setting its default text
        b1.setFont(fontText);                                       // setting the font
        b1.addActionListener(new ActionListener(){                  // action listener to do something when pressed
            public void actionPerformed(ActionEvent e) {
                    sendMessage(user + "1" );                       // sends the name of the user that pressed the button and which button
                    String field1 = b1.getText();                   // gets the text from the button and stores it in a String
                    if(field1 == " ⃝"){                             // checks if the string is equal to an empty circle
                        b1.setText("⬤");                            // if true then change to a full circle
                    }
                    else if (field1 == "⬤"){                        // opposite of the above if statement
                        b1.setText(" ⃝");
                    }   
            }
        }); 
        panelButtons.add(b1);                                       // adding the button to the panel

        b2 = new JButton(" ⃝");                                     // creating button and setting its default text
        b2.setFont(fontText);                                       // setting the font
        b2.addActionListener(new ActionListener(){                  // action listener to do something when pressed
            public void actionPerformed(ActionEvent e) {            
                    sendMessage(user + "2" );                       // sends the name of the user that pressed the button and which button
                    String field2 = b2.getText();                   // gets the text from the button and stores it in a String
                    if(field2 == " ⃝"){                             // checks if the string is equal to an empty circle
                        b2.setText("⬤");                            // if true then change to a full circle
                    }
                    else if (field2 == "⬤"){                        // opposite of the above if statement
                        b2.setText(" ⃝");
                    }   
            }
        });
        panelButtons.add(b2);                                       // adding the button to the panel

Answer 1

您可以创建一个包含按钮的列表。使用随机数生成器在列表长度内创建一个随机数。使用该(随机)索引来修改相应的按钮。