onItemClick(AdapterView<?> parent, View view, int position, long id)

public class MainActivity extends Activity implements AdapterView.OnItemClickListener{

  private ListView myListView;
  private SimpleAdapter simpleAdapter;
  private List<Map<String, Object>> data;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    data = new ArrayList<Map<String, Object>>();
    simpleAdapter = new SimpleAdapter(this, getData(), R.layout.item, new String[]{"img", "text"}, new int[]{R.id.img, R.id.text});
    myListView = (ListView) findViewById(R.id.myListView);
    //设置监听器
    myListView.setAdapter(simpleAdapter);
    myListView.setOnItemClickListener(this);
  }

  private List<Map<String, Object>> getData() {
    for (int i = 0; i < 20; i++) {
      Map<String, Object>map = new HashMap<String, Object>();
      map.put("img", R.mipmap.ic_launcher);
      map.put("text", "初始simpleAdapter"+(i+1));
      data.add(map);
    }

    return data;
  }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    //通过view获取其内部的组件，进而进行操作
    String text = (String) ((TextView)view.findViewById(R.id.text)).getText();
    //大多数情况下，position和id相同，并且都从0开始
    String showText = "点击第" + position + "项，文本内容为：" + text + "，ID为：" + id;
    Toast.makeText(this, showText, Toast.LENGTH_LONG).show();
  }
}

void onScrollStateChanged(AbsListView view, int scrollState)

public class MainActivity extends Activity implements AbsListView.OnScrollListener{

  private ListView myListView;
  private SimpleAdapter simpleAdapter;
  private List<Map<String, Object>> data;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    data = new ArrayList<Map<String, Object>>();
    simpleAdapter = new SimpleAdapter(this, getData(), R.layout.item, new String[]{"img", "text"}, new int[]{R.id.img, R.id.text});
    myListView = (ListView) findViewById(R.id.myListView);
    myListView.setAdapter(simpleAdapter);

    //设置监听器
    myListView.setOnScrollListener(this);
  }

  private List<Map<String, Object>> getData() {
    for (int i = 0; i < 20; i++) {
      Map<String, Object>map = new HashMap<String, Object>();
      map.put("img", R.mipmap.ic_launcher);
      map.put("text", "初始simpleAdapter"+(i+1));
      data.add(map);
    }

    return data;
  }

  @Override
  public void onScrollStateChanged(AbsListView view, int scrollState) {
    switch (scrollState) {
      //投掷状态
      case SCROLL_STATE_FLING:
        Toast.makeText(this, "SCROLL_STATE_FLING", Toast.LENGTH_SHORT).show();
        break;
      //闲置状态
      case SCROLL_STATE_IDLE:
        Toast.makeText(this, "SCROLL_STATE_IDLE", Toast.LENGTH_SHORT).show();
        break;
      //滑动状态
      case SCROLL_STATE_TOUCH_SCROLL:
        Toast.makeText(this, "SCROLL_STATE_TOUCH_SCROLL", Toast.LENGTH_SHORT).show();
        break;
    }
  }

  @Override
  public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
//    Toast.makeText(this, "滚动已停止，已加载的第一项的索引为：" + firstVisibleItem +
//            "，已加载的列表项总数为：" + visibleItemCount + "，存在的列表项总数为：" +
//            totalItemCount, Toast.LENGTH_LONG).show();
  }
}