Android：每次点击后都有新的随机数？

Question

在一个 android 应用程序中，我打算让用户回答一个随机数，然后屏幕上会出现一个新数。重复 10 次，然后给出最终分数。但是我不确定如何更新总和，以便在每次之后在屏幕上显示一个新的随机数。

以下是我当前的代码：

public class Test extends Activity {
    //declare vars
    TextView text;
    EditText answer;
    Button submit;
    int random1;
    int random2;
    String question;
    int correctAnswer;@
    Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.test);
        // initialising variables
        initialiseVars();
        //set up random
        setUpRandom();
        //Set text view equal to question
        text.setText(question);
        //updateQuestion?
    }
    public void initialiseVars() {
        text = (TextView) findViewById(R.id.tvTopRandomTest);
        answer = (EditText) findViewById(R.id.etEnterAnswerRandomTest);
        submit = (Button) findViewById(R.id.btnSubmitRandomTest);
    }
    public void setUpRandom() {
        //setting up randoms
        Random random = new Random();
        // Generating random number between 1 and 12
        random1 = random.nextInt(12) + 1;
        // Generating another random number between 1 and 12
        random2 = random.nextInt(12) + 1;
        question = random1 + " x " + random2 + " = ";
        correctAnswer = random1 * random2;
    }
    public void updateQuestion() {
        //CODE TO UPDATE QUESTION
    }
}

Answer 1

添加按钮 ClickListener 以便当用户按下提交按钮时它会更新问题并清除所有以前的值

submit = (Button) findViewById(R.id.btnSubmitRandomTest);
submit.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        updateQuestion();
    }
}

在您的活动中保持计数并在 updateQuestion 中增加计数

public void updateQuestion() {
    if (Int.parseString(answer.getText().toString()) != correctAnswer) {
        // Show toast or something
        return;
    }
    tries++;
    if (tries == 10) return; // or do something else;
    answer.setText("");
    setUpRandom();
    text.setText(question); // add this line in your setUpRandom();
}

要生成随机整数，请查看this。希望这会对您有所帮助。