我的代码中出现此错误：
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.nooshindroid.yastashir/com.nooshindroid.yastashir.MainActivity}: java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
在dess3和dess 4中出现了这个错误！ 我不知道为什么。但是dess3和dess 4的大小是0！
此代码的路由类位于：
public class Route extends Activity {
String diff;
Context context;
ArrayList<String> sources, destinations, destinations2,destinations3,destinations4, answer;
public static ArrayList<Models> routeItems;
public Route(Context context) {
this.context = context;
}
public Route(String part) {
XmlPullParserFactory pullParserFactory;
try {
pullParserFactory = XmlPullParserFactory.newInstance();
XmlPullParser parser = pullParserFactory.newPullParser();
Bundle bundle = getIntent().getExtras();
diff = bundle.getString("level");
InputStream in_s = this.context.getAssets().open(diff);
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(in_s, null);
parseXML(parser);
}
catch (XmlPullParserException e) {
e.printStackTrace();
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void parseXML(XmlPullParser parser) throws XmlPullParserException, IOException
{
int eventType = parser.getEventType();
Models currentRout = null;
sources = new ArrayList<String>();
sources.clear();
destinations = new ArrayList<String>();
destinations.clear();
destinations2 = new ArrayList<String>();
destinations2.clear();
destinations3 = new ArrayList<String>();
destinations3.clear();
destinations4 = new ArrayList<String>();
destinations4.clear();
answer = new ArrayList<String>();
answer.clear();
while (eventType != XmlPullParser.END_DOCUMENT) {
String name = null;
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
routeItems = new ArrayList<Models>();
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("route")) {
currentRout = new Models();
} else if (currentRout != null) {
if (name.equalsIgnoreCase("source")) {
currentRout.source = parser.nextText();
if ( !sources.contains(currentRout.source))
sources.add(currentRout.source);
} else if (name.equalsIgnoreCase("destination")) {
currentRout.destination = parser.nextText();
try {
//if ( !destinations.contains(currentRout.destination))
destinations.add(currentRout.destination);
}
catch (Exception ex)
{
}
} else if (name.equalsIgnoreCase("destination2")) {
currentRout.destination2 = parser.nextText();
try {
//if ( !destinations2.contains(currentRout.destination2))
destinations2.add(currentRout.destination2);
}
catch (Exception ex)
{
}
} else if (name.equalsIgnoreCase("destination2")) {
currentRout.destination3 = parser.nextText();
try {
//if ( !destinations2.contains(currentRout.destination2))
destinations3.add(currentRout.destination3);
}
catch (Exception ex)
{
}
} else if (name.equalsIgnoreCase("destination2")) {
currentRout.destination4 = parser.nextText();
try {
//if ( !destinations2.contains(currentRout.destination2))
destinations4.add(currentRout.destination4);
}
catch (Exception ex)
{
}
} else if (name.equalsIgnoreCase("answer")) {
currentRout.answer = parser.nextText();
try {
//if ( !destinations2.contains(currentRout.destination2))
answer.add(currentRout.answer);
}
catch (Exception ex)
{
}
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
if (name.equalsIgnoreCase("route") && currentRout != null) {
routeItems.add(currentRout);
}
}
eventType = parser.next();
}
}
}
我的代码的主要活动如下：
public class MainActivity extends Activity {
public int nextque;
ArrayList<String> sourcess;
ArrayList<String> dess;
ArrayList<String> dess2;
ArrayList<String> dess3;
ArrayList<String> dess4;
ArrayList<String> answer;
int randomInt;
Random random;
Button buttons[] = new Button[8];
String j[] = new String[3];
int sumscore1 = 0;
int sumscore2 = 0;
String diff;
ProgressBar mProgressBar, mProgressBar1;
int edtTimerValue;
TextView textViewShowTime;
CountDownTimer countDownTimer;
long totalTimeCountInMilliseconds;
public void nextque() {
if ((nextque) + 1 < sourcess.size()) {
nextque++;
}
}
private void setTimer() {
int time = 0;
time = edtTimerValue;
totalTimeCountInMilliseconds = time * 1000;
mProgressBar1.setMax(time * 1000);
}
public void startTimer() {
countDownTimer = new CountDownTimer(totalTimeCountInMilliseconds, 1) {
@Override
public void onTick(long leftTimeInMilliseconds) {
long seconds = leftTimeInMilliseconds / 1000;
mProgressBar1.setProgress((int) (leftTimeInMilliseconds));
textViewShowTime.setText(String.format("%02d", seconds % 60));
}
@Override
public void onFinish() {
buttons[7].setBackgroundResource(R.drawable.blank_button);
textViewShowTime.setText("10");
textViewShowTime.setVisibility(View.VISIBLE);
mProgressBar.setVisibility(View.VISIBLE);
mProgressBar1.setVisibility(View.GONE);
nextStep();
}
}.start();
}
public void nextStep() {
textViewShowTime.setVisibility(View.VISIBLE);
equation1.setVisibility(View.VISIBLE);
equation2.setVisibility(View.VISIBLE);
setTimer();
mProgressBar.setVisibility(View.INVISIBLE);
startTimer();
mProgressBar1.setVisibility(View.VISIBLE);
if(sumscore1==100){
sumscore1=0;
sumscore2=0;
score1.setText(String.valueOf(sumscore1));
score2.setText(String.valueOf(sumscore2));
}
if (sumscore2==100){
sumscore1=0;
sumscore2=0;
score1.setText(String.valueOf(sumscore1));
score2.setText(String.valueOf(sumscore2));
}
random = new Random();
randomInt = random.nextInt(sourcess.size());
equation1.setText(sourcess.get(nextque));
equation2.setText(sourcess.get(nextque));
Random rn = new Random();
int index = rn.nextInt(3) + 0;
Log.e("rand poduct", String.valueOf(index));
nextque();
equation1 = (TextView) findViewById(R.id.equation1);
buttons[index].setText( answer.get(nextque));
dess.size();
int k = 0;
for (int i = 0; i <= 3; i++) {
Log.e("prod", "loop " + i);
if (i != index ) {
if(!(answer.get(nextque).equals(j[k]))){
buttons[i].setText((j[k]));
}
k++;
}
}
equation2 = (TextView) findViewById(R.id.equation2);
Random rt = new Random();
int index2 = rt.nextInt(3) + 0;
int index3 = index2 + 4;
buttons[index3].setText( answer.get(nextque));
int d = 0;
for (int i = 4; i <= 7; i++) {
if (i != index3) {
if(!(answer.get(nextque).equals(j[d]))){
buttons[i].setText((j[d]));
}
d++;
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
equal1 = (TextView) findViewById(R.id.equal1);
equal2 = (TextView) findViewById(R.id.equal2);
bord1 = (TextView) findViewById(R.id.bord1);
bord2 = (TextView) findViewById(R.id.bord2);
bakht1 = (TextView) findViewById(R.id.bakht1);
bakht2 = (TextView) findViewById(R.id.bakht2);
refreash = (ImageView) findViewById(R.id.refreash);
textViewShowTime = (TextView) findViewById(R.id.textView_timerview_time);
edtTimerValue = 10;
mProgressBar = (ProgressBar) findViewById(R.id.progressbar_timerview);
mProgressBar1 = (ProgressBar) findViewById(R.id.progressbar1_timerview);
Bundle bundle = getIntent().getExtras();
Typeface font = Typeface.createFromAsset(getAssets(), "BYekan.ttf");
diff = bundle.getString("level");
textViewShowTime.setTypeface(font);
route = new Route(getApplicationContext());
XmlPullParserFactory pullParserFactory;
try {
pullParserFactory = XmlPullParserFactory.newInstance();
XmlPullParser parser = pullParserFactory.newPullParser();
InputStream in_s = getApplicationContext().getAssets().open("easys.xml");
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(in_s, null);
route.parseXML(parser);
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
sourcess = new ArrayList<String>();
for (int i = 0; i < route.sources.size(); i++) {
sourcess.add(i, route.sources.get(i));
}
dess = new ArrayList<String>();
for (int i = 0; i < route.destinations.size(); i++) {
dess.add(i, route.destinations.get(i));
}
dess2 = new ArrayList<String>();
for (int i = 0; i < route.destinations2.size(); i++) {
dess2.add(i, route.destinations2.get(i));
}
dess3 = new ArrayList<String>();
for (int i = 0; i < route.destinations3.size(); i++) {
dess3.add(i, route.destinations3.get(i));
}
dess4 = new ArrayList<String>();
for (int i = 0; i < route.destinations4.size(); i++) {
dess4.add(i, route.destinations4.get(i));
}
answer = new ArrayList<String>();
for (int i = 0; i < route.answer.size(); i++) {
answer.add(i, route.answer.get(i));
}
nextStep();
}
}
任何人都可以帮我解决吗？非常感谢你的关注。
答案 0 :(得分：0)
数组j的数组大小为3.但是当你在循环中使用它时，你正在迭代它的大小。尝试增加数组的大小并检查。
除错误外，您还会获得错误的行号，如果可能，请将其发布。