CODEWITHSUNDEEP
androidrandom
Rahimian
Rahimian

Reputation: 102

random order quiz ِDynamic

I want my program to ask random questions and have dynamic answers But it only asks random questions and I need a dynamic answer

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

Upvotes: 1

Views: 68

Answers (1)

Simon Crane
Simon Crane

Reputation: 2182

Try this:

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

This will choose 2 random colours independently.

Edit

To ensure that the correct answer is available, you will need to store the correct answers somewhere. I strongly recommend making a Question class that stores the string for the question and the correct answer, but you can achieve the desired effect with just an array of the answers, e.g.:

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));
}

This will work for any number of buttons

Upvotes: 1

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