Android 当文本在一个颜色切换活动中完全高亮显示时

我正在重新创建一个用于教育目的的打字应用程序。目标是键入段落中的单词。当一个单词正确时，该单词变为绿色，editText字段被清除，其下一个单词变为绿色。最后，每个单词都是绿色的，然后应用程序崩溃，因为活动正在寻找下一个变为绿色的单词，但没有找到任何内容

你知道我怎样才能在最后停止“搜索”吗？我想说：

如果（“书面文字”等于“应书写的文字”）

然后，结束对editText字段的关注，并显示分数“Success”

@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_paragraph_game);


    paragraphTextView = findViewById(R.id.txtParagraph);
    edtInput = findViewById(R.id.edtTextWriter);
    timerView = findViewById(R.id.txtTimer);
    edtInput.setInputType(InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD);


    //Sofortiger Fokus auf Textfeld
    edtInput.requestFocus();
    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.showSoftInput(edtInput, InputMethodManager.SHOW_IMPLICIT);

    try {
        refreshParagraph();
    } catch (IOException e) {
        e.printStackTrace();
    }
    setTitle(getString(R.string.paragraph_title));
    edtInput.addTextChangedListener(this);
}

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    //empty method
}

@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {


    //vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv//
    if (s.toString().replace(" ", "").equals(wordList.get(wordIndex))) {
        inputClean = true;
        numberOfLetters += s.length();
        wordIndex++;
    //^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^//

        }

    }
}

@Override
public void afterTextChanged(Editable s) {
    if (inputClean) {
        inputClean = false;
        edtInput.setText("");




        updateColor(paragraphTextView, paragraphInitializer.getNextIndex(wordIndex - 1));
    } else if (!wordList.get(wordIndex).contains(s.toString().replace(" ", ""))) {
        undoColorChange(paragraphTextView, paragraphInitializer.getCurrentIndex(), paragraphInitializer.lookaheadIndex(wordIndex));
    }
}

protected void refreshParagraph() throws IOException {
    paragraphInitializer = new ParagraphInitializer(this);
    String paragraph = paragraphInitializer.getRandomParagraph();
    wordList = paragraphInitializer.getWords(paragraph);
    paragraphTextView.setText(paragraph, TextView.BufferType.SPANNABLE);
    inputClean = false;
    wordIndex = 0;
    numberOfWords = paragraphInitializer.getWordCount();
    countDownTimer = new CountDownTimer(Constants.MILLIS_IN_FUTURE, Constants.COUNTDOWN_INTERVAL) {
        @SuppressLint("SetTextI18n")
        @Override
        public void onTick(long millisUntilFinished) {
            timerView.setText("00:" + millisUntilFinished / 1000);
            if ((millisUntilFinished / 1000) < 16)
                timerView.setTextColor(Color.rgb(255, 34, 34));

        }

        @Override
        public void onFinish() {
            timerView.setText(getString(R.string.zero));
            edtInput.setEnabled(false);


            //initializeResultDialog();

            //pushFirebaseValues();


            //Intent intent = new Intent(ParagraphGameActivity.this, ResultParagraphActivity.class);
            //startActivity(intent);



        }
    }.start();
}

private void updateColor(TextView paragraphTextView, int nextIndex) {
    Spannable wordToSpan = new SpannableString(paragraphTextView.getText());
    //Neu einfärben in Grün
    wordToSpan.setSpan(new ForegroundColorSpan(Color.rgb(59, 226, 8)), 0, nextIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    paragraphTextView.setText(wordToSpan);


}

private void undoColorChange(TextView paragraphTextView, int currentIndex, int lookaheadIndex) {
    Spannable wordToSpan = new SpannableString(paragraphTextView.getText());
    //Neu einfärben falls Falsch
    wordToSpan.setSpan(new ForegroundColorSpan(Color.rgb(226, 8, 8)), currentIndex, lookaheadIndex, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
    paragraphTextView.setText(wordToSpan);
}


private void pushFirebaseValues() {
    DatabaseReference databaseReference = FirebaseDatabase.getInstance().getReference(Constants.USER_SCORE);
    String userName = getSharedPreferences(Constants.USER_PREFERENCE, Context.MODE_PRIVATE).getString(Constants.USER_NICK, getString(R.string.OK));

    User user = new User(userName, numberOfLetters / 5, numberOfLetters, false);

    if (userName != null) {
        databaseReference.child(userName).setValue(user);
    } else {

        //DatabaseReference databaseReference1 = FirebaseDatabase.getInstance().getReference(Constants.USER_SCORE);
        Query query = databaseReference.orderByChild("score-list");
        query.addListenerForSingleValueEvent(new ValueEventListener() {
            @Override
            public void onDataChange(DataSnapshot resultsSnapshot) {
                for (DataSnapshot userSnapshot : resultsSnapshot.getChildren()) {
                    User user = new User(userName, numberOfLetters / 5, numberOfLetters, false);
                    userSnapshot.getRef().setValue(user);
                }
            }

            @Override
            public void onCancelled(DatabaseError databaseError) {
                throw databaseError.toException();
            }
        });


    }
}

谢谢你的帮助！：）

-----------这是完整的日志--------------

---

问候

请发布完整的日志并添加感谢javdromero！

vvvvvvvvvv
this line
^^^^^^^^^^

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.myapplication, PID: 21599
java.lang.IndexOutOfBoundsException: Index: 8, Size: 8
    at java.util.ArrayList.get(ArrayList.java:437)
    at com.example.myapplication.ParagraphGameActivity.onTextChanged(ParagraphGameActivity.java:76)
    at android.widget.TextView.sendOnTextChanged(TextView.java:11785)
    at android.widget.TextView.setText(TextView.java:6965)
    at android.widget.TextView.setText(TextView.java:6761)
    at android.widget.EditText.setText(EditText.java:145)
    at android.widget.TextView.setText(TextView.java:6713)
    at com.example.myapplication.ParagraphGameActivity.afterTextChanged(ParagraphGameActivity.java:88)
    at android.widget.TextView.sendAfterTextChanged(TextView.java:11816)
    at android.widget.TextView$ChangeWatcher.afterTextChanged(TextView.java:15266)
    at android.text.SpannableStringBuilder.sendAfterTextChanged(SpannableStringBuilder.java:1287)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:587)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:517)
    at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:38)
    at android.view.inputmethod.BaseInputConnection.replaceText(BaseInputConnection.java:867)
    at android.view.inputmethod.BaseInputConnection.commitText(BaseInputConnection.java:199)
    at com.android.internal.widget.EditableInputConnection.commitText(EditableInputConnection.java:177)
    at com.android.internal.view.IInputConnectionWrapper.executeMessage(IInputConnectionWrapper.java:345)
    at com.android.internal.view.IInputConnectionWrapper$MyHandler.handleMessage(IInputConnectionWrapper.java:93)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:246)
    at android.app.ActivityThread.main(ActivityThread.java:8512)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)