我的崩溃列表中出现以下错误，我不知道如何将其与我的代码相关联，因为它看似通用且不确定
java.lang.IndexOutOfBoundsException:
at java.util.ArrayList.throwIndexOutOfBoundsException (ArrayList.java:255)
at java.util.ArrayList.get (ArrayList.java:308)
at android.widget.ArrayAdapter.getItem (ArrayAdapter.java:337)
at android.widget.ArrayAdapter.createViewFromResource (ArrayAdapter.java:390)
at android.widget.ArrayAdapter.getView (ArrayAdapter.java:362)
at android.widget.Spinner.makeView (Spinner.java:661)
at android.widget.Spinner.layout (Spinner.java:609)
at android.widget.Spinner.onLayout (Spinner.java:568)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1703)
at android.widget.LinearLayout.layoutHorizontal (LinearLayout.java:1692)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1468)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1703)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1557)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1466)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:579)
at android.widget.FrameLayout.onLayout (FrameLayout.java:514)
at android.widget.ScrollView.onLayout (ScrollView.java:1511)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.support.v4.view.ViewPager.onLayout (ViewPager.java:1795)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.RelativeLayout.onLayout (RelativeLayout.java:1077)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1703)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1557)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1466)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:579)
at android.widget.FrameLayout.onLayout (FrameLayout.java:514)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1703)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1557)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1466)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:579)
at android.widget.FrameLayout.onLayout (FrameLayout.java:514)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.LinearLayout.setChildFrame (LinearLayout.java:1703)
at android.widget.LinearLayout.layoutVertical (LinearLayout.java:1557)
at android.widget.LinearLayout.onLayout (LinearLayout.java:1466)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.widget.FrameLayout.layoutChildren (FrameLayout.java:579)
at android.widget.FrameLayout.onLayout (FrameLayout.java:514)
at android.view.View.layout (View.java:16075)
at android.view.ViewGroup.layout (ViewGroup.java:5300)
at android.view.ViewRootImpl.performLayout (ViewRootImpl.java:2119)
at android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:1873)
at android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1073)
at android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:5988)
at android.view.Choreographer$CallbackRecord.run (Choreographer.java:767)
at android.view.Choreographer.doCallbacks (Choreographer.java:580)
at android.view.Choreographer.doFrame (Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:753)
at android.os.Handler.handleCallback (Handler.java:739)
at android.os.Handler.dispatchMessage (Handler.java:95)
at android.os.Looper.loop (Looper.java:135)
at android.app.ActivityThread.main (ActivityThread.java:5930)
at java.lang.reflect.Method.invoke (Native Method)
at java.lang.reflect.Method.invoke (Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:1200)
我是Android编程的新手，非常感谢有关如何解决此问题的任何帮助。
Becos每个人都在询问适配器代码，我将在这里发布一个示例适配器，
public class ChatAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
public static final int REP_TYPE = 1;
public static final int ME_TYPE = 2;
public static final int FILE_TYPE = 4;
public static final int FILE_DONE = 5;
public static final int FILE_DONE_REP = 6;
public static final int FOOTER_TYPE = 3;
List<Message> messages;
String rep_photo;
String me_photo;
Context context;
public ChatAdapter(Context context) {
this.context = context;
messages = new ArrayList<>();
}
public ChatAdapter(Context context, String rep_photo, String me_photo) {
messages = new ArrayList<>();
this.rep_photo = rep_photo;
this.me_photo = me_photo;
this.context = context;
}
public void setMessages(List<Message> messageList){
messages = messageList;
notifyDataSetChanged();
}
public void addMessage(Message message){
messages.add(0, message);
notifyItemInserted(0);
}
public void addMessageList(List<Message> messageList){
int size = this.messages.size();
this.messages.remove(size -1);
notifyItemRemoved(size - 1);
size = this.messages.size();
this.messages.addAll(messageList);
notifyItemRangeInserted(size, messageList.size());
}
public void replaceFileMessage(){
int position = 0;
for (Message message1 : messages){
if (message1.msg.contains("::FILE::")){
position = messages.indexOf(message1);
messages.remove(position);
break;
}
}
notifyItemRemoved(position);
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
switch (viewType){
case FILE_TYPE: return new FileHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_me_chat_file, parent, false));
case FILE_DONE: return new FileDoneHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_me_chat_file_done, parent, false));
case FILE_DONE_REP: return new FileDoneRepHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_rep_chat_file_done, parent, false));
case FOOTER_TYPE: return new FooterHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.footer_user_list, parent, false));
case ME_TYPE: return new MeHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_me_msg, parent, false));
default: return new RepHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.item_rep_message, parent, false));
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
Message message = messages.get(position);
if (holder instanceof MeHolder){
MeHolder meHolder = (MeHolder) holder;
meHolder.bind(message);
}else if (holder instanceof RepHolder){
RepHolder repHolder = (RepHolder) holder;
repHolder.bind(message);
}else if (holder instanceof FileHolder){
FileHolder fileHolder = (FileHolder) holder;
fileHolder.bind(message);
}else if (holder instanceof FileDoneHolder){
FileDoneHolder fileDoneHolder = (FileDoneHolder) holder;
fileDoneHolder.bind(message);
}else if (holder instanceof FileDoneRepHolder){
FileDoneRepHolder fileDoneRepHolder = (FileDoneRepHolder) holder;
fileDoneRepHolder.bind(message);
}
}
@Override
public int getItemViewType(int position) {
if (messages.size() > 0 && messages.size() > 25 &&
position == messages.size() - 1 && messages.get(position) == null){
return FOOTER_TYPE;
}else {
Message message = messages.get(position);
if (message.from_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE::")) {
return FILE_TYPE;
}else if (message.from_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE_DONE::")) {
return FILE_DONE;
}else if (message.to_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE_DONE::")) {
return FILE_DONE_REP;
}else if(message.from_user.equals(AppSetting.getInstance().getUserData().user_id)){
return ME_TYPE;
} else {
return REP_TYPE;
}
}
}
@Override
public int getItemCount() {
return messages.size();
}
class RepHolder extends RecyclerView.ViewHolder implements Html.ImageGetter{
@BindView(R.id.ivUser)
CircleImageView ivUser;
@BindView(R.id.tvMsg)
BlackTextView tvMsg;
@BindView(R.id.tvTime)
BlackTextView tvTime;
public RepHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(final Message message){
for(String s : ChatActivity.smilesMapReplaces.keySet()){
if (message.msg.contains(s)){
String img = "<img src='" + s + "' />";
if (s.equals(":)")){
s = ":\\)";
}else if(s.equals(":(")){
s = ":\\(";
}else if(s.equals(";)")){
s = ";\\)";
}
message.msg = message.msg.replaceAll(s, img);
}
}
tvMsg.setText(Html.fromHtml(message.msg, this, null));
Picasso.with(ivUser.getContext()).load(rep_photo).into(ivUser);
tvTime.setText(DateUtils.getDisplayTime(tvTime.getContext(), message.created, DateUtils.DATE_FORMAT_ISO_8601));
ivUser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((BaseActivity)ivUser.getContext()).startActivity(ProfileActivity.class, AppSetting.getInstance().getUserData().user_id.equals(message.from_user) ? message.to_user : message.from_user, false);
}
});
if (message.msg.startsWith("http")){
tvMsg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(message.msg));
tvMsg.getContext().startActivity(browserIntent);
}
});
}
}
@Override
public Drawable getDrawable(String source) {
if (source.contains("http")) {
LevelListDrawable d = new LevelListDrawable();
Drawable empty = tvMsg.getContext().getResources().getDrawable(R.drawable.logo);
d.addLevel(0, 0, empty);
d.setBounds(0, 0, empty.getIntrinsicWidth(), empty.getIntrinsicHeight());
new LoadImage().execute(source, d);
return d;
}else{
int id = ChatActivity.smilesMapReplaces.get(source);
Drawable d = tvMsg.getContext().getResources().getDrawable(id);
d.setBounds(0,0,d.getIntrinsicWidth() * 3/2,d.getIntrinsicHeight() * 3/2);
return d;
}
}
class LoadImage extends AsyncTask<Object, Void, Bitmap> {
private LevelListDrawable mDrawable;
@Override
protected Bitmap doInBackground(Object... params) {
String source = (String) params[0];
mDrawable = (LevelListDrawable) params[1];
try {
InputStream is = new URL(source).openStream();
return BitmapFactory.decodeStream(is);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap != null) {
BitmapDrawable d = new BitmapDrawable(bitmap);
mDrawable.addLevel(1, 1, d);
mDrawable.setBounds(0, 0, bitmap.getWidth()*3, bitmap.getHeight()*3);
mDrawable.setLevel(1);
// i don't know yet a better way to refresh TextView
// mTv.invalidate() doesn't work as expected
CharSequence t = tvMsg.getText();
tvMsg.setText(t);
}
}
}
}
class FileHolder extends RecyclerView.ViewHolder{
@BindView(R.id.tvName)
BlackTextView tvName;
@BindView(R.id.tvTime)
BlackTextView tvTime;
@BindView(R.id.ivUser)
ImageView ivUser;
public FileHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(Message message){
String fileName = message.msg.substring(8, message.msg.length());
tvName.setText(fileName);
Picasso.with(ivUser.getContext()).load(me_photo).into(ivUser);
tvTime.setText(DateUtils.getDisplayTime(tvTime.getContext(), message.created, DateUtils.DATE_FORMAT_ISO_8601));
}
}
class FileDoneHolder extends RecyclerView.ViewHolder{
@BindView(R.id.tvName)
BlackTextView tvName;
@BindView(R.id.tvTime)
BlackTextView tvTime;
@BindView(R.id.ivUser)
ImageView ivUser;
@BindView(R.id.ivFile)
ImageView ivFile;
@BindView(R.id.ivAttachment)
ImageView ivAttachment;
public FileDoneHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(Message message){
final String fileName = message.msg.substring(13, message.msg.length());
tvName.setText(fileName);
Picasso.with(ivUser.getContext()).load(me_photo).into(ivUser);
tvTime.setText(DateUtils.getDisplayTime(tvTime.getContext(), message.created, DateUtils.DATE_FORMAT_ISO_8601));
tvName.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File fileDir = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/");
if (!fileDir.exists()){
fileDir.mkdir();
}
File file = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/" + fileName);
if (file.exists()){
UIUtils.openFile(context, file.getAbsolutePath());
}else{
new DownloadFileFromURL(fileName).execute(Constants.BASE_FILE_URL + fileName);
}
}
});
ivAttachment.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File fileDir = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/");
if (!fileDir.exists()){
fileDir.mkdir();
}
File file = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/" + fileName);
if (file.exists()){
UIUtils.openFile(context, file.getAbsolutePath());
}else{
new DownloadFileFromURL(fileName).execute(Constants.BASE_FILE_URL + fileName);
}
}
});
}
}
class FileDoneRepHolder extends RecyclerView.ViewHolder{
@BindView(R.id.tvName)
BlackTextView tvName;
@BindView(R.id.tvTime)
BlackTextView tvTime;
@BindView(R.id.ivUser)
ImageView ivUser;
@BindView(R.id.ivAttachment)
ImageView ivAttachment;
public FileDoneRepHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(Message message){
final String fileName = message.msg.substring(13, message.msg.length());
tvName.setText(fileName);
Picasso.with(ivUser.getContext()).load(rep_photo).into(ivUser);
tvTime.setText(DateUtils.getDisplayTime(tvTime.getContext(), message.created, DateUtils.DATE_FORMAT_ISO_8601));
ivAttachment.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File fileDir = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/");
if (!fileDir.exists()){
fileDir.mkdir();
}
File file = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/" + fileName);
if (file.exists()){
UIUtils.openFile(context, file.getAbsolutePath());
}else{
new DownloadFileFromURL(fileName).execute(Constants.BASE_FILE_URL + fileName);
}
}
});
tvName.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
File fileDir = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/");
if (!fileDir.exists()){
fileDir.mkdir();
}
File file = new File(Environment.getExternalStorageDirectory().toString() + "/araliya/" + fileName);
if (file.exists()){
UIUtils.openFile(context, file.getAbsolutePath());
}else{
new DownloadFileFromURL(fileName).execute(Constants.BASE_FILE_URL + fileName);
}
}
});
}
}
class MeHolder extends RecyclerView.ViewHolder implements Html.ImageGetter{
@BindView(R.id.ivUser)
CircleImageView ivUser;
@BindView(R.id.tvMsg)
BlackTextView tvMsg;
@BindView(R.id.tvTime)
BlackTextView tvTime;
public MeHolder(View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
public void bind(final Message message){
for(String s : ChatActivity.smilesMapReplaces.keySet()){
if (message.msg.contains(s)){
String img = "<img src='" + s + "' />";
if (s.equals(":)")){
s = ":\\)";
}else if(s.equals(":(")){
s = ":\\(";
}else if(s.equals(";)")){
s = ";\\)";
}
message.msg = message.msg.replaceAll(s, img);
}
}
tvMsg.setText(Html.fromHtml(message.msg, this, null));
Picasso.with(ivUser.getContext()).load(me_photo).into(ivUser);
ivUser.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
((BaseActivity)ivUser.getContext()).startActivity(ProfileActivity.class, AppSetting.getInstance().getUserData().user_id, false);
}
});
if (message.msg.startsWith("http")){
tvMsg.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(message.msg));
tvMsg.getContext().startActivity(browserIntent);
}
});
}
tvTime.setText(DateUtils.getDisplayTime(tvTime.getContext(), message.created, DateUtils.DATE_FORMAT_ISO_8601));
}
@Override
public Drawable getDrawable(String source) {
if (source.contains("http")) {
LevelListDrawable d = new LevelListDrawable();
Drawable empty = tvMsg.getContext().getResources().getDrawable(R.drawable.logo);
d.addLevel(0, 0, empty);
d.setBounds(0, 0, empty.getIntrinsicWidth(), empty.getIntrinsicHeight());
new LoadImage().execute(source, d);
return d;
}else{
int id = ChatActivity.smilesMapReplaces.get(source);
Drawable d = tvMsg.getContext().getResources().getDrawable(id);
d.setBounds(0,0,d.getIntrinsicWidth() * 3/2,d.getIntrinsicHeight() * 3/2);
return d;
}
}
class LoadImage extends AsyncTask<Object, Void, Bitmap> {
private LevelListDrawable mDrawable;
@Override
protected Bitmap doInBackground(Object... params) {
String source = (String) params[0];
mDrawable = (LevelListDrawable) params[1];
try {
InputStream is = new URL(source).openStream();
return BitmapFactory.decodeStream(is);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Bitmap bitmap) {
if (bitmap != null) {
BitmapDrawable d = new BitmapDrawable(bitmap);
mDrawable.addLevel(1, 1, d);
mDrawable.setBounds(0, 0, bitmap.getWidth()*3, bitmap.getHeight()*3);
mDrawable.setLevel(1);
// i don't know yet a better way to refresh TextView
// mTv.invalidate() doesn't work as expected
CharSequence t = tvMsg.getText();
tvMsg.setText(t);
}
}
}
}
class FooterHolder extends RecyclerView.ViewHolder{
public FooterHolder(View itemView) {
super(itemView);
}
}
class DownloadFileFromURL extends AsyncTask<String, String, String> {
String fileName;
public DownloadFileFromURL(String fileName) {
this.fileName = fileName;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected String doInBackground(String... f_url) {
int count;
try {
URL url = new URL(f_url[0]);
URLConnection conection = url.openConnection();
conection.connect();
// this will be useful so that you can show a tipical 0-100%
// progress bar
int lenghtOfFile = conection.getContentLength();
// download the file
InputStream input = new BufferedInputStream(url.openStream(),
8192);
// Output stream
OutputStream output = new FileOutputStream(Environment
.getExternalStorageDirectory().toString()
+ "/araliya/" + fileName);
byte data[] = new byte[1024];
long total = 0;
while ((count = input.read(data)) != -1) {
total += count;
// publishing the progress....
// After this onProgressUpdate will be called
publishProgress("" + (int) ((total * 100) / lenghtOfFile));
// writing data to file
output.write(data, 0, count);
}
// flushing output
output.flush();
// closing streams
output.close();
input.close();
} catch (Exception e) {
Log.e("Error: ", e.getMessage());
e.printStackTrace();
return null;
}
return fileName;
}
protected void onProgressUpdate(String... progress) {
}
@Override
protected void onPostExecute(String file_url) {
if (file_url != null){
UIUtils.openFile(context, Environment.getExternalStorageDirectory().toString() + "/araliya/" + file_url);
}
}
}
}
答案 0 :(得分：6)
java.lang.IndexOutOfBoundsException：at java.util.ArrayList.throwIndexOutOfBoundsException （ArrayList.java:255）
IndexOutOfBoundsException是一个未经检查的例外，它扩展了RuntimeException。
<强>原因
可以抛出此异常以指示尝试访问索引 它超出了String，Array或Vector等对象的范围。 通常任何小于或等于-1的负整数和正数 大于或等于对象大小的整数是索引 这将超出界限。
<强>处理
在执行程序时，处理Java Runtime Environment抛出的异常的过程称为异常处理。使用try-catch()阻止。
try
{
// Your CODE
}
catch(IndexOutOfBoundsException exp) // Exception
{
System.out.println("Exception " + exp.getMessage() );
}
如果我突然发现它，那么它就无法调试 我有超过50多个适配器的大型应用程序调用不同的不同 动作。
如果你Debugging App会更好。这是一个很好的做法。
为什么？
调试允许您浏览每行代码，方法以及代码的工作情况。这是 easier to find small mistake in large pieces of code 。
来自
@Override
public int getItemViewType(int position) {
if (messages.size() > 0 && messages.size() > 25 &&
position == messages.size() - 1 && messages.get(position) == null){
return FOOTER_TYPE;
}
调试 if 部分。检查每个条件是否正确满足。特别是 messages.size() 。
答案 1 :(得分：5)
根据这个例外：
java.lang.IndexOutOfBoundsException：
at java.util.ArrayList.throwIndexOutOfBoundsException（ArrayList.java:255)
在java.util.ArrayList.get（ArrayList.java:308）
和这个方法：
@Override
public int getItemViewType(int position) {
if (messages.size() > 0 && messages.size() > 25 &&
position == messages.size() - 1 && messages.get(position) == null){
return FOOTER_TYPE;
}else {
Message message = messages.get(position);
if (message.from_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE::")) {
return FILE_TYPE;
}else if (message.from_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE_DONE::")) {
return FILE_DONE;
}else if (message.to_user.equals(AppSetting.getInstance().getUserData().user_id) && message.msg.contains("::FILE_DONE::")) {
return FILE_DONE_REP;
}else if(message.from_user.equals(AppSetting.getInstance().getUserData().user_id)){
return ME_TYPE;
} else {
return REP_TYPE;
}
}
}
我认为以下几行可能是问题的原因：
if (messages.size() > 0 && messages.size() > 25 && position == messages.size() - 1 && messages.get(position) == null) {...}
else {
Message message = messages.get(position);
...
}
执行以下操作时： messages.get（position）如果索引超出范围，则会抛出 IndexOutOfBoundsException 。那么，如果position是29但messages.size（）是27，你认为会发生什么？关于此检查的任何想法 messages.size（）＆gt; 0＆amp;＆amp; messages.size（）＆gt; if block 中 25 ？我认为你应该关注messages list and position value。为避免messages.get(position)操作异常，position的值应遵循以下规则： -1＆lt;位置＆lt; messages.size（） 即可。
其他信息：
从android documentation开始，方法 int getItemViewType（int position） ：
获取将由getView（int，View，ViewGroup）为指定项创建的View类型。
参数：position - int：项目在我们想要的视图类型的适配器数据集中的位置。
返回 - 表示View类型的整数。如果可以在getView（int，View，ViewGroup）中将一个视图转换为另一个视图，则两个视图应共享相同的类型。注意：整数必须在0到getViewTypeCount（）的范围内 - 1.还可以返回IGNORE_ITEM_VIEW_TYPE。
因此，原因是适配器数据集中项目的 position 与 List<Message> messages 中项目的位置不对应。
答案 2 :(得分：2)
我认为这是由于内存不足造成的。当有 OOM 错误时，有时android会创建这样的未知错误。它必须是设备上剩余内存不足的用户。
描述您的应用 Android 3.0为分析应用程序引入了很棒的功能，所以使用它。
查找内存泄漏 查找内存泄漏可以帮助您构建无错误的应用程序。即使你知道你的应用程序对内存管理有好处，你也应该坚持下去。
管理内存 找出一些Android的内存管理技巧并使用它。
**最佳做法** 尝试谷歌搜索Android开发的最佳实践。这将有助于您解决问题。