随机顺序测验ِ动态

Question

我希望我的程序提出随机问题并获得动态答案但它只提出随机问题并且我需要动态答案

Button btn_1,btn_2;
TextView text;
setContentView(R.layout.activity_main);
btn_1=findViewById(R.id.btn_1);
btn_2=findViewById(R.id.btn_2);
text=findViewById(R.id.text);

int min = 1;
int max = 3;

Random r = new Random();
int rand = r.nextInt(max - min + 1) + min;
String[]question={"What is Name Color Sky ?",
      "What is Name Color Night?",
        "What is Blood Color?"
};

String[]answer={"Blue ",
        "Black",
        "White",
        "Red",
        "Green"
        ,"Purple"

};
text.setText(question[rand]); }

Screen

Answer 1

试试这个：

btn_1.setText(answer[r.nextInt(6)])
btn_2.setText(answer[r.nextInt(6)])

这将独立选择 2 种随机颜色。

编辑

为确保提供正确答案，您需要将正确答案存储在某处。我强烈建议创建一个 Question 类来存储问题的字符串和正确答案，但是您可以只使用答案数组来达到预期的效果，例如：

Button[] answerButtons = new Button[] {btn1, btn2};
int numButtons = 2;
String[] correctAnswers = new String[] {"Blue", "Black", "Red"}; // you have a space after blue, remove it
List<String> answersDisplayed = Arrays.asList(new String[numButtons]);
int indexOfCorrectAnswer = random.nextInt(numButtons);
answersDisplayed.set(indexOfCorrectAnswer, correctAnswers[rand]); // the number used to pick the question earlier
for (int i = 0; i < numButtons; i++){
    if (correctAnswers[rand] == null) {
        // rand was used to pick the question, so pick the answer that goes with it
        // pick a random answer that hasn't come up yet
        String incorrectAnswer = answer[random.nextInt(6)];
        while (answersDisplayed.contains(incorrectAnswer)){
            incorrectAnswer = answer[random.nextInt(6)];
        }
        answersDisplayed.set(i, incorrectAnswer);
    }
    answerButtons[i].setText(answersDisplayed.get(i));
}

这适用于任意数量的按钮