Help to generate Random Strings but not equal

I have modified your code to make it work as shown below. This will return x amount of unique answers based on what number you give to getAnswers() as a parameter.

Note: You can only pass in a number between 0 and answerOne.length or it will crash.

import java.util.Random;

public class RandomSpace1 {
    public String[] answerOne = {
        "Venus",
        "Mars",
        "Jupiter",
        "Earth",
        "Saturn",
        "Uranus",
    };

    ////////////////////////////////////////////////////////
    // Method to get random answers from answerOne[]
    // Parameters: number of answers to return
    // Returns: array of Strings containing answers
    ////////////////////////////////////////////////////////
    public String[] getAnswers(int numberOfAnswers){
        String answers[] = new String[numberOfAnswers];
        int randomNumbers[] = new int[numberOfAnswers];

        Random randomGenerator = new Random(); 

        if (numberOfAnswers > 1) {
            do {
                for (int i = 0; i < numberOfAnswers; i++) {
                    randomNumbers[i] = randomGenerator.nextInt(answerOne.length);
                }
            } while (!unique(randomNumbers));
        } else {
            randomNumbers[0] = randomGenerator.nextInt(answerOne.length);
        }

        for (int i = 0; i < numberOfAnswers; i++) {
            answers[i] = answerOne[randomNumbers[i]];
        }

        return answers;
    }

    ////////////////////////////////////////////////////////
    // Method to check whether or not all values are unique.
    // Parameter: array of integers
    // Returns: boolean
    ////////////////////////////////////////////////////////
    private boolean unique (int[] arrayIn) {
        for (int i = 0; i < arrayIn.length - 1; i++) {
            for (int j = i + 1; j < arrayIn.length; j++) {
                if (arrayIn[i] == arrayIn[j]) {
                    return false;
                }
            }
        }
        return true;
    }
}

If there is someone that has a better solution, please feel free to let me know. I am no java expert! I hope this answers your question accurately Matheus!

setText() takes in a string, not an array of strings. Therefore if you want to put all the returned answers on one TextView, you would have to do something along the lines of this:

String answerOneStr = "";
for (int i = 0; i < answerOne.length; i++) {
    answerOneStr += answerOne[i] + ", ";
}

This will make a String containing planet1, planet2.... From there you can use that string in your setText method.

Thanks very much for your answer. Stil im having problems

im calling this this method getAnswers from another activity which i put this

     private void handleNewAnswer2() {
    String answerOne = mRandomSpace1.getAnswers();


    mplrOne.setText(answerOne);



} 

and it tells me: The method getAnswers(int) in the type RandomSpace1 is not applicable for the arguments () ActivityAnswer.java

after that my eclipse did crash. would it be possible for you to explain me the code or why is it saying that it cant find the getAnswers happening? i think im missing something about where to put it right.

Got it, still return an error on the activity which i call the method

 private void handleNewAnswer2() {
String answerOne[] = mRandomSpace1.getAnswers();


mplrOne.setText(answerOne);

}

it says the method setText(CharSequence) in the type TextView is not applicable for the arguments (String[])

that is just to show the result... i created another activity to get the answers on textviews on the screen, then set

          TextView mplrOne;

and

    mplrOne = (TextView) findViewById(R.id.plrOne);

on the onCreate method, together with the

handleNewAnswer2();

Hey Jesse,

Do you know if its posible to use this code you showed me (below) to have the answer in more than one textview? For example, if i have 3 random strings. each random strings will go to one different textview... if i have 4 random strings then it will show 4 random strings on 4 different textviews.

the one below is making all the answers go to only one textview.

        private void handleNewAnswer2() {
          String answerOneStr = "";
          for (int i = 0; i < answerOne.length; i++) {
            answerOneStr += answerOne[i] + ", ";
         }

       mplrOne.setText(answerOneStr);

Jesse, you are God!

Thank you again!