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copied!<p>Try to change the scope of the ArrayList (use a private member for example) to enable access from your onClick method… I assume you'll have to do the same with your adapter to tweak it to your needs.</p> <p><strong>Update:</strong></p> <p>A quick-and-dirty implementation (without adapter nor ViewHolder, <em>etc.</em>):</p> <pre><code>package com.stackoverflow.randomarray; import java.lang.String; import java.util.List; import java.util.ArrayList; import java.util.Random; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class SoRandomArray extends Activity implements View.OnClickListener { private Random mRandom = new Random(); private List<String> mQuestionsList; private String mCurrentQuestion = null; private List<String> mAnswersList; TextView mQuestionTv; Button mButton1; Button mButton2; Button mButton3; Button mButton4; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mQuestionsList = new ArrayList<String>(); mAnswersList = new ArrayList<String>(); initQuizData(); mQuestionTv = (TextView)findViewById(R.id.textView1); // Retrieve the buttons declared by the xml layout mButton1 = (Button)findViewById(R.id.button1); mButton2 = (Button)findViewById(R.id.button2); mButton3 = (Button)findViewById(R.id.button3); mButton4 = (Button)findViewById(R.id.button4); mButton1.setOnClickListener(this); mButton2.setOnClickListener(this); mButton3.setOnClickListener(this); mButton4.setOnClickListener(this); shuffle(); } private void initQuizData() { mQuestionsList.add("Who is the actual CEO at Apple?"); mQuestionsList.add("Who is the actual CEO at Microsoft?"); mQuestionsList.add("Android is made by:"); mAnswersList.add("Steve Jobs"); mAnswersList.add("Steven Sinofsky"); mAnswersList.add("Tim Cook"); mAnswersList.add("Steve Ballmer"); } private void shuffle() { mCurrentQuestion = mQuestionsList.get(mRandom.nextInt(mQuestionsList.size())); mQuestionsList.remove(mCurrentQuestion); mQuestionTv.setText(mCurrentQuestion); mAnswersList.add("Steve Jobs"); mAnswersList.add("Steven Sinofsky"); mAnswersList.add("Tim Cook"); mAnswersList.add("Steve Ballmer"); mButton1.setText(mAnswersList.get(mRandom.nextInt(mAnswersList.size()))); mAnswersList.remove(mButton1.getText()); mButton2.setText(mAnswersList.get(mRandom.nextInt(mAnswersList.size()))); mAnswersList.remove(mButton2.getText()); mButton3.setText(mAnswersList.get(mRandom.nextInt(mAnswersList.size()))); mAnswersList.remove(mButton3.getText()); mButton4.setText(mAnswersList.get(mRandom.nextInt(mAnswersList.size()))); mAnswersList.remove(mButton4.getText()); } private boolean validateAnswer(String question, String answer) { if(question.equals("Who is the actual CEO at Apple?")) { if(answer.equals("Tim Cook")) { return true; } else { return false; } } else if (question.equals("Android is made by:")) { return false; } else if (question.equals("Who is the actual CEO at Microsoft?")) { if(answer.equals("Steve Ballmer")) { return true; } else { return false; } } return false; } public void onClick(View v) { Toast toast; if(validateAnswer(mCurrentQuestion, ((Button)findViewById(v.getId())).getText().toString())) { toast = Toast.makeText(this, "Good!", Toast.LENGTH_SHORT); } else { toast = Toast.makeText(this, "Too bad!", Toast.LENGTH_SHORT); } if(mQuestionsList.size()>0) { toast.show(); shuffle(); } else { toast.show(); } } } </code></pre> <p>The associated layout main.xml:</p> <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" > <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="Hello World, SoRandomArray" /> <Button android:id="@+id/button1" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="" /> <Button android:id="@+id/button2" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="" /> <Button android:id="@+id/button3" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="" /> <Button android:id="@+id/button4" android:layout_height="wrap_content" android:layout_width="wrap_content" android:text="" /> </LinearLayout> </code></pre> <p>You'll have to correct some issue with the randomizing of the buttons, that's not state-of-the-art but that's the idea and it will give you a start…</p>

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