我已经阅读了大量关于类似问题的帖子并尝试了解决方案,但它似乎永远不会奏效.我确信这是我正在做的事情,这是基于我对编程语言的无知.

所以,我得到了ListAdapter的一些代码来填充Two Item List View.

import java.util.ArrayList;
...


public class ListAdapter extends BaseAdapter {

private Activity activity;
  private ArrayList<Integer> image;
  private ArrayList<String> list1;
  private ArrayList<String> list2;
  private static LayoutInflater inflater=null;

  public ListAdapter(Activity a,ArrayList<Integer> image,ArrayList<String> list1,ArrayList<String> list2) {
      this.activity = a;         
      this.image = image;
      this.list1 = list1;
      this.list2 = list2;
      ListAdapter.inflater = (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);      
  }

  public int getCount() {
    return image.size();        
  }

  public Object getItem(int position) {
      return position;
  }

  public long getItemId(int position) {
      return position;
  }

  public static class ViewHolder{
      public TextView text1;
      public TextView text2;
      public ImageView image;
  }

  public View getView(int position,View convertView,ViewGroup parent) {
      View vi=convertView;
      ViewHolder holder;
      if(convertView==null){

          vi = inflater.inflate(R.layout.grid_list_layout,null);

          holder=new ViewHolder();
          holder.text1=(TextView)vi.findViewById(R.id.item1);
          holder.text2=(TextView)vi.findViewById(R.id.item2);
          holder.image = (ImageView)vi.findViewById(R.id.icon);

          vi.setTag(holder);
      }
      else
          holder=(ViewHolder)vi.getTag();

          holder.text1.setText(this.list1.get(position));
          holder.text2.setText(this.list2.get(position));
          holder.image.setImageResource(this.image.get(position));

          return vi;
  }

}

我已经修改了上面的内容,在原始文章中使用ArrayList而不是Array.它工作正常.我想要做的是检测长按并提示用户删除.

main.xml具有此部分代码,即列表视图

<ListView
    android:id="@+id/lvResult"
    android:layout_width="fill_parent"
    android:layout_height="296dp"
    android:paddingLeft="10px"
    android:paddingRight="10px" >
</ListView>

还有另一个grid_list_layout.xml文件,其中包含

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >

<ImageView
    android:id="@+id/icon"
    android:layout_width="72px"
    android:layout_height="wrap_content"
    android:layout_marginTop="5px" />

<TwoLineListItem
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/twolinelist"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:onClick="onClick"
    android:orientation="vertical"
    android:paddingBottom="5px"
    android:paddingTop="5px" >

    <TextView
        android:id="@+id/item1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/item2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingTop="30px"
        android:textAppearance="?android:attr/textAppearanceSmall" />
</TwoLineListItem>

在主要活动中,它被实例化(？)

ListView lv = (ListView) findViewById(R.id.lvResult);
//listAdapter is declared further up
listAdapter = new ListAdapter(HomesterActivity.this,arrIcon,arRSSID,arrMAC);
    lv.setAdapter(listAdapter);

那么,我想知道的是如何拦截长按？我在哪里放各种各样的东西？即XML文件中必定存在某些内容,但哪一个？我试过了

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        public void onListItemClick(ListView l,View v,int position,long id)
        {
            //super.onListItemClick( l,v,position,id);
            Toast.makeText(this,Toast.LENGTH_LONG).show();
        }
    }

和各种版本,但似乎没有什么可以取悦编译器！

如果你有时间并且感到如此倾向,我会感激一些教育,所以我可以全神贯注.