我开发一个应用程序，我需要表现出一定的列表视图控件。我只是执行 OnScrollListener 在我的活动，以监测我的列表视图的内容，但是当我设置为我的活动布局它没有调用onScroll事件。如果我评论该块然后调用它就好了。我该如何解决这个问题？

 包com.Threadtest;进口com.Threadtest.main.myRunnable;进口android.app.Activity;进口android.app.ListActivity;进口android.os.Bundle;进口android.util.Log;进口android.view.View;进口android.view.ViewGroup;进口android.widget.AbsListView;进口android.widget.BaseAdapter;进口android.widget.ListView;进口android.widget.TextView;进口android.widget.AbsListView.OnScrollListener;公共类TestList扩展ListActivity实现OnScrollListener {    Aleph0适配器=新Aleph0（）;    @覆盖    保护无效的onCreate（捆绑savedInstanceState）{        super.onCreate（savedInstanceState）;        的setContentView（R.layout.test）;        ListView控件列表视图=（ListView控件）findViewById（android.R.id.list）;        listview.setAdapter（适配器）;        / * setListAdapter（适配器）;        。getListView（）setOnScrollListener（本）; * /    }    公共无效onScroll（AbsListView来看，        INT firstVisible，最终诠释visibleCount，诠释TOTALCOUNT）{        Log.i（TestList，firstVisible =+ firstVisible +visibleCount =+ visibleCount +TOTALCOUNT =+ TOTALCOUNT）;        布尔loadMore = / *也许添加填充* /            firstVisible + visibleCount＆GT; = TOTALCOUNT;        如果（loadMore）{            Log.i（TestList，在通知）;            线程线程=新主题（）            {                  @覆盖                  公共无效的run（）{                      尝试{                        this.sleep（10000）;                        runOnUiThread（新myRunnable（适配器，visibleCount））;                    }赶上（InterruptedException的E）{                        // TODO自动生成catch块                        e.printStackTrace（）;                    }                  }              };            thread.start（）;        }    }    公共无效onScrollStateChanged（AbsListView V，int类型）{}    类myRunnable实现Runnable    {        Aleph0适配器;        公共myRunnable（Aleph0适配器，诠释visibleCount）        {            this.adapter =适配器;            this.adapter.count + = visibleCount;        }        公共无效的run（）{            // TODO自动生成方法存根             Log.i（TestList，列表计数=+ adapter.count）;                adapter.notifyDataSetChanged（）;        }    }    类Aleph0扩展了BaseAdapter {        诠释计数= 40; / *起始量* /        公众诠释的getCount（）{返回计数; }        公共对象的getItem（INT POS）{返回POS; }        众长getItemId（INT POS）{返回POS; }        公共查看getView（INT POS，视图V的ViewGroup以及P）{            如果（POS！=计数-1）            {                TextView的视图=新的TextView（TestList.this）;                view.setText（进入+ POS）                返回视图。            }            TextView的视图=新的TextView（TestList.this）;            view.setText（中..+ POS）            返回视图。        }    }} 

解决方案

getListView（）。setOnScrollListener（本）是必要的监听器绑定到的ListView 。在 ListActivity 类不提供绑定的大部分侦听器的自动的方式，它只是提供了 OnItemClickListener 。退房的ListActivity code 。

I am developing an app where I need to show some list view control. I am just implementing the OnScrollListener in my activity in order to monitor my listview content but it's not invoking the onScroll event when I set the layout for my activity. If i comment that block then it invokes it just fine. How do I solve this issue?

package com.Threadtest;

import com.Threadtest.main.myRunnable;

import android.app.Activity;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AbsListView.OnScrollListener;

public class TestList extends ListActivity implements OnScrollListener {

    Aleph0 adapter = new Aleph0();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.test);
        ListView listview=(ListView)findViewById(android.R.id.list);
        listview.setAdapter(adapter);
        /*setListAdapter(adapter); 
        getListView().setOnScrollListener(this);*/
    }

    public void onScroll(AbsListView view,
        int firstVisible, final int visibleCount, int totalCount) {

        Log.i("TestList", "firstVisible="+firstVisible+" visibleCount="+visibleCount+" totalCount="+totalCount);
        boolean loadMore = /* maybe add a padding */
            firstVisible + visibleCount >= totalCount;

        if(loadMore) {
            Log.i("TestList", "In Notify");
            Thread thread = new Thread()
            {
                  @Override
                  public void run() {
                      try {
                        this.sleep(10000);
                        runOnUiThread(new myRunnable(adapter,visibleCount));
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }


                  }
              };

            thread.start();

        }
    }

    public void onScrollStateChanged(AbsListView v, int s) { } 

    class myRunnable implements Runnable
    {
        Aleph0 adapter;

        public myRunnable(Aleph0 adapter,int visibleCount)
        {

            this.adapter=adapter;
            this.adapter.count += visibleCount;
        }
        public void run() {
            // TODO Auto-generated method stub
             Log.i("TestList", "List Count="+adapter.count);
                adapter.notifyDataSetChanged();
        }

    }

    class Aleph0 extends BaseAdapter {
        int count = 40; /* starting amount */

        public int getCount() { return count; }
        public Object getItem(int pos) { return pos; }
        public long getItemId(int pos) { return pos; }

        public View getView(int pos, View v, ViewGroup p) {
            if(pos!=count-1)
            {
                TextView view = new TextView(TestList.this);
                view.setText("entry " + pos);
                return view;
            }
            TextView view = new TextView(TestList.this);
            view.setText("Loading.. " + pos);
            return view;

        }
    }
}

解决方案

getListView().setOnScrollListener(this) is necessary to bind the listener to the ListView. The ListActivity class does not provide an "automatic" way of binding most of the listeners, It only provides an automatic way of binding the OnItemClickListener. Check out the ListActivity code.