Question

我有一个程序，其中随机值应用于四个随机按钮。其中一个随机值id显示在四个按钮的顶部。如果用户点击显示该数字的按钮（loadG4），他们就会得到一个点。我遇到的问题是，一旦用户单击正确的按钮并生成新的数字，rbvalue按钮可能不会与loadG4值完全不同。从我的代码中可以看出，它们永远不应该是平等的。这是代码：

int score = 0;
Random random = new Random();
int rbselector = random.nextInt(4);    //These four initiations are out onCreate.
int loadG4 = random.nextInt(10);


final Button[] selectrb = new Button[4];
    selectrb[0] = rb1;
    selectrb[1] = rb2;
    selectrb[2] = rb3;
    selectrb[3] = rb4;


    final Button loseStarter4 = (Button) findViewById(R.id.Starter4);
    loseStarter4.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            infoG4.setVisibility(View.GONE);
            loseStarter4.setVisibility(View.GONE);
            rb1.setVisibility(View.VISIBLE);
            rb2.setVisibility(View.VISIBLE);
            rb3.setVisibility(View.VISIBLE);
            rb4.setVisibility(View.VISIBLE);


            rbselector = random.nextInt(4);

            final TextView number = (TextView) findViewById(R.id.number);
            number.setText(""+ loadG4);


            for(int allrbA=0; allrbA<4; allrbA++) {
                int rbvalue = random.nextInt(9);
                if (rbvalue == loadG4) {
                    rbvalue=9;
                }
                selectrb[allrbA].setText(""+rbvalue);
            }
            selectrb[rbselector].setText(""+ loadG4);


                for (int allrbA = 0; allrbA < 4; allrbA++) {
                selectrb[allrbA].setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                            Button clicked = (Button) v;
                            String clickVal = (String) clicked.getText();
                            int finalClick = Integer.valueOf(clickVal);

                            if (finalClick == loadG4) {
                                score++;
                                for (int allrbA = 0; allrbA < 4; allrbA++) {
                                    int rbvalue = random.nextInt(9);
                                    if (rbvalue == loadG4) {
                                        rbvalue=9;
                                    }
                                    selectrb[allrbA].setText("" + rbvalue);
                                }
                                int loadG4 = random.nextInt(10);
                                number.setText("" + loadG4);
                                int rbselector = random.nextInt(4);
                                selectrb[rbselector].setText("" + loadG4);
                            }
                    }
                });
                }

我有它，如果一个rbvalue等于loadG4，它被设置为= 9.出于某种原因，在第一次正确点击后，rbvalue可能等于loadG4。

此外，loadG4的值也从未改变过。这是为什么？

非常感谢任何能够仔细研究并解释为什么a）rbvalue在第一次正确点击后并不总是与loadG4不同而且b）为什么loadG4保持相同的数字。

非常感谢提前。

Answer 1

在您的代码中，您正在重新初始化loadG4和rbselector。相反，你应该使用全局变量。

//Declare this globally. Not in oncreate.
int score = 0;
Random random = new Random();
int rbselector = random.nextInt(4);
int loadG4 = random.nextInt(10);


final Button[] selectrb = new Button[4];
selectrb[0] = rb1;
selectrb[1] = rb2;
selectrb[2] = rb3;
selectrb[3] = rb4;


final Button loseStarter4 = (Button) findViewById(R.id.Starter4);
loseStarter4.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        infoG4.setVisibility(View.GONE);
        loseStarter4.setVisibility(View.GONE);
        rb1.setVisibility(View.VISIBLE);
        rb2.setVisibility(View.VISIBLE);
        rb3.setVisibility(View.VISIBLE);
        rb4.setVisibility(View.VISIBLE);


        rbselector = random.nextInt(4);

        final TextView number = (TextView) findViewById(R.id.number);
        number.setText(""+ loadG4);


        for(int allrbA=0; allrbA<4; allrbA++) {
            int rbvalue = random.nextInt(9);
            if (rbvalue == loadG4) {
                rbvalue+=1;
            }
            selectrb[allrbA].setText(""+rbvalue);
        }
        selectrb[rbselector].setText(""+ loadG4);


            for (int allrbA = 0; allrbA < 4; allrbA++) {
            selectrb[allrbA].setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                        Button clicked = (Button) v;
                        String clickVal = (String) clicked.getText();
                        int finalClick = Integer.valueOf(clickVal);

                        if (finalClick == loadG4) {
                            score++;
                            loadG4 = random.nextInt(10); //removed declaration
                            for (int allrbA = 0; allrbA < 4; allrbA++) {
                                int rbvalue = random.nextInt(9);
                                if (rbvalue == loadG4) {
                                    rbvalue+=1; // better method to prevent duplicates for 9
                                }
                                selectrb[allrbA].setText("" + rbvalue);
                            }
                            number.setText("" + loadG4);
                            rbselector = random.nextInt(4);
                            selectrb[rbselector].setText("" + loadG4);
                        }
                }
            });
            }

现在你的代码应该可以工作了。

为什么随机按钮游戏在第一次点击后有缺陷？

1 个答案: