java.lang.IndexOutOfBoundsException:索引2无效，在Android中删除listview末尾的footerview时大小为2？

我正在用listview实现分页。我试图在加载我的某些数据时添加页脚视图，并在listview结尾处的setOnScrollListener上的最后一页到达时删除listview结尾处的页脚视图。但是在最后一页上遇到崩溃，导致IndexOutofBounds问题异常：无效索引2，大小为2

我在初始化列表后添加footerview

ListView listView;

int pageCount = 0;
View footer;@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    listView = (ListView) findViewById(R.id.load);

    // Add footer view
    footer = ((LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.prohressbar, null, false);
    listView.addFooterView(footer);

    List<All_Post> allDesc = dbhelper.getAllDescriptions(OFFSET);
    for (All_Post all_Post : allDesc){
        descArray.add(all_Post);
    }

    if (adapter == null) {
        adapter = new AllPostAdapter(this, R.layout.allpostlist, descArray);
        listView.setAdapter(adapter);
    }
    if (adapter != null) {
        adapter.notifyDataSetChanged();

        adapter = new AllPostAdapter(this, R.layout.allpostlist, descArray);
        listView.setAdapter(adapter);
        listView.invalidateViews();

        final SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext());
        int item_position = sharedPreferences.getInt("item_position", 0);
        listView.setSelection(item_position);
    }

    Pegination();    

---

有人能帮我解决这个问题吗。为什么获取InvalidIndexOutofBoundException。

索引值以零开始。因此数组/列表的第一个元素是0e，第二个元素是1。你说你的数据只有2个元素，所以索引2代表你没有的3个元素。查看您的代码并正确处理限制

在此行中，intead==使用0&&total>0&&total

---

但是也要验证您的整个代码，以找到另一个可能的错误。

将您从arrayList中获取值的代码张贴到哪里。for循环中的

列表

变量是什么？它从现在开始不起作用。它直接添加到最后一页上。我想在10条记录之后添加进度条，当我的页面是当时的最后一页时移动进度条并添加按钮加载更多内容。

public void Pegination() {

        final int activityCount  = sharedPreferences.getInt("ActivityListCount", 0);
        Log.e("", "activityCount in Pegination method =" + activityCount);

        listView.addFooterView(footer);

        final Button btnLoadMore = new Button(this);
        btnLoadMore.setText("Load More ....");

        listView.setOnScrollListener(new AbsListView.OnScrollListener() {
            private int total;

            @Override
            public void onScrollStateChanged(AbsListView absListView, int scrollState) {
            }

            @Override
            public void onScroll(AbsListView absListView, int firstItem, int visibleItemCount, final int totalItems) {

                total = firstItem + visibleItemCount;
                Log.e("", "total =" + total);

                if (totalItems > 0 && total > 0 && total == totalItems) {
                    if (preLast != total) {
                        if (pageCount < LocalPages) {
                            Handler handler = new Handler();
                            handler.postDelayed(new Runnable() {
                                public void run() {
                                    pageCount++;

                                    List<All_Post> allDesc = dbhelper.getAllDescriptions(OFFSET_SCROLL);
                                for (All_Post all_Post : allDesc) {

                                    descArray.add(all_Post);
                                }
                                if (adapter != null) {
                                    adapter.notifyDataSetChanged();
                                    listView.setAdapter(adapter);
                                    listView.setSelection(totalItems);
                                }
                                }
                            }, 2500);
                        }
                        preLast = total;
                        Log.e("", "11111111111 preLast=" + preLast);
                    }

                    preLast = total;
                    Log.e("", "222222222222222 preLast=" + preLast);
                    if (pageCount == LocalPages)
                    {
                        if (preLast == total)
                        {
                            if (activityCount == 200)
                            {
                                Log.e(" 11111 In btnLoadMore ", " ActivityListCount =" + activityCount);
                                Log.e("", "Go to else conditions --- 1 !!!!!!  pageCount=" + pageCount + " LocalPages=" + LocalPages);
                                pageCount = 0;

                                listView.removeFooterView(footer);
                                listView.addFooterView(btnLoadMore);
                            }
                        }
                            if (activityCount < 200) {
                                Log.e(" 222222 In btnLoadMore ", " ActivityListCount =" + activityCount);
                                Log.e("", "Go to else conditions --- 2 !!!!!!  pageCount=" + pageCount + " LocalPages=" + LocalPages);
                                pageCount = 0;
                                listView.removeFooterView(btnLoadMore);


                            }
                        }


                    }
                }
            }

        });

    }

04-25 15:48:18.780  28787-28787/com.example.tazeen.classnkk E/﹕ total =137
04-25 15:48:18.780  28787-28787/com.example.tazeen.classnkk E/﹕ 222222222222222 preLast=137
04-25 15:48:18.781  28787-28787/com.example.tazeen.classnkk E/11111 In btnLoadMore﹕ ActivityListCount =200
04-25 15:48:18.781  28787-28787/com.example.tazeen.classnkk E/﹕ Go to else conditions --- 1 !!!!!!  pageCount=3 LocalPages=3
04-25 15:48:18.785  28787-28787/com.example.tazeen.classnkk D/AndroidRuntime﹕ Shutting down VM
04-25 15:48:18.788  28787-28787/com.example.tazeen.classnkk E/AndroidRuntime﹕ FATAL EXCEPTION: main
    Process: com.example.tazeen.classnkk, PID: 28787
    java.lang.IndexOutOfBoundsException: Invalid index 2, size is 2
            at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255)
            at java.util.ArrayList.get(ArrayList.java:308)
            at android.widget.HeaderViewListAdapter.isEnabled(HeaderViewListAdapter.java:164)
            at android.widget.ListView.dispatchDraw(ListView.java:3334)
            at android.view.View.draw(View.java:15364)
            at android.widget.AbsListView.draw(AbsListView.java:4434)
            at android.view.View.updateDisplayListIfDirty(View.java:14242)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at android.view.View.draw(View.java:15364)
            at android.view.View.updateDisplayListIfDirty(View.java:14242)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at android.view.View.updateDisplayListIfDirty(View.java:14234)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at android.view.View.updateDisplayListIfDirty(View.java:14234)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at android.view.View.updateDisplayListIfDirty(View.java:14234)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at android.view.View.updateDisplayListIfDirty(View.java:14234)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.View.draw(View.java:15057)
            at android.view.ViewGroup.drawChild(ViewGroup.java:3528)
            at android.view.ViewGroup.dispatchDraw(ViewGroup.java:3322)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchDraw(PhoneWindow.java:2845)
            at android.view.View.draw(View.java:15364)
            at android.widget.FrameLayout.draw(FrameLayout.java:647)
            at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2824)
            at android.view.View.updateDisplayListIfDirty(View.java:14242)
            at android.view.View.getDisplayList(View.java:14272)
            at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:267)
            at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:273)
            at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:312)
            at android.view.ViewRootImpl.draw(ViewRootImpl.java:2852)
            at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2689)
            at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2313)
            at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1251)
            at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6438)
            at android.view.Choreographer$CallbackRecord.run(Choreographer.java:795)
            at android.view.Choreographer.doCallbacks(Choreographer.java:598)
            at android.view.Choreographer.doFrame(Choreographer.java:567)
            at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:781)
            at android.os.Handler.handleCallback(Handler.java:810)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:189)
            at android.app.ActivityThread.main(ActivityThread.java:5529)
            at java.lang.reflect.Method.invoke(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:372)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:950)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)

if (totalItems > 0 && total > 0 && total < totalItems) {