[Java Quiz ver2] 7-2

MainActivity.java

    @Override
    public void onClick(View v) {
        /* 省略 */

        new MaterialAlertDialogBuilder(this)
                .setTitle(alertTitle)
                .setMessage("答え : " + rightAnswer)
                .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        if (quizCount == QUIZ_COUNT) {
                            // 結果画面へ移動
                            Intent intent = new Intent(MainActivity.this, ResultActivity.class);
                            intent.putExtra("RIGHT_ANSWER_COUNT", rightAnswerCount);
                            startActivity(intent);
                        } else {
                            quizCount++;