Listview：只有一个具有多个文本视图的列表项

Question

我只需要在一个列表项中显示多个文本视图，其余的列表视图项将只有一个文本视图。

我如何实现这一目标？您可以指出我的任何示例或教程吗？

谢谢。

Answer 1

制作你自己的适配器：

BaseAdapter 已经提供了处理不同视图类型（列表项单元格的不同布局）和有效回收视图的方法：

• getViewTypeCount()：存在多少不同视图（布局）的计数。

• getItemViewType()：返回一个整数来标识单元格中项目的视图类型。请注意，内部 BaseAdapter 实现使用数组。因此，您在此处返回的值必须是从 0 到 n。您不能跳过索引。

  公共类 MyAdapter 扩展 BaseAdapter {

  private final int VIEW_TYPE_NORMAL = 0;
  private final int VIEW_TYPE_4_TEXTS = 1;
  
  /**
   * The inflater for
   */
  protected LayoutInflater inflater;
  protected Context context;
  
  public MyAdapter(Context context) {
      this.context = context;
      this.inflater = (LayoutInflater) context
              .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  }
  
  @Override
  public int getViewTypeCount() {
      // There are two view types
      return 2;
  }
  
  @Override
  public int getItemViewType(int position) {
      if (position == 0)
          return VIEW_TYPE_4_TEXTS;
      else
          return VIEW_TYPE_NORMAL;
  }
  
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
      int type = getItemViewType(position);
      if (convertView == null) {
          convertView = newView(type, parent);
      }
      bindView(position, type, convertView);
      return convertView;
  }
  
  @Override
  public long getItemId(int position) {
      return 0; // replace it with your id, if you have stable ids in your
                  // adapter
  }
  
  /** Inflates the correct view accorind the view type **/
  public View newView(int type, ViewGroup parent) {
  
      if (VIEW_TYPE_4_TEXTS == type) {
          View view = inflater.inflate(R.layout.your_layout_with_4_textviews,
                  parent, false);
          view.setTag(new ViewHolder4TextViews(view)); // ViewHolder pattern
  
          return view;
      }
  
      // Otherwise its a normal item with VIEW_TYPE_NORMAL
      View view = inflater
              .inflate(R.layout.your_normal_layout, parent, false);
      view.setTag(new NormalViewHolder(view)); // ViewHolder pattern
  
      return view;
  
  }
  
  /** Bind the data for the specified {@code position} to the {@code view}. */
  public void bindView(int position, int type, View view) {
  
      if (VIEW_TYPE_4_TEXTS == type) {
          // set the 4 text view values
          ViewHolder4TextViews holder = (ViewHolder4TextViews) view.getTag();
  
          holder.textview1.setText("...");
          holder.textview2.setText("...");
          holder.textview3.setText("...");
          holder.textview4.setText("...");
  
      } else {
          // VIEW_TYPE_NORMAL
          NormalViewHolder holder = (NormalViewHolder) view.getTag();
  
          holder.textview.setText("...");
      }
  
  }
  

  }

Answer 2

使用自定义适配器为您列出并编辑 getView 函数：

public class MyListAdapter extends BaseAdapter {

    [...]

    @Override
    public View getView(int position, View view, ViewGroup parentView) {
            LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

            if(position < 1) {
                /* Inflate a layout with 4 textview */
                view = inflater.inflate(R.layout.your_4_textview_layout, parentView, false);

            } else {
                /* Inflate a layout with 1 textview */
                view = inflater.inflate(R.layout.your_1_textview_layout, parentView, false);

            }

            return view;

    }

    [...]

}

注意在构造函数中将 Context 上下文传递给 MyListAdapter，例如 answer

Answer 3

您可以在适配器中进行更改...类似这样的事情。 @position 1：将显示“空白”视图 @rest 位置：“triplistrow”将 bw 显示

   @Override
  public View getView(final int position, View convertView, final ViewGroup parent) 
  {         
      View rowView = convertView;
      if(position !=1)
      {
      if (rowView == null) 
      {
          LayoutInflater inflater = context.getLayoutInflater();
          rowView = inflater.inflate(R.layout.triplistrow, null);
          ViewHolder viewHolder = new ViewHolder();

          viewHolder.no = (TextView) rowView.findViewById(R.id.TVTripNo);
          viewHolder.name = (TextView) rowView.findViewById(R.id.TVTripName);
          viewHolder.date = (TextView) rowView.findViewById(R.id.TVTripDate);

          rowView.setTag(viewHolder);
       }
      }
      else
      {
          LayoutInflater inflater = context.getLayoutInflater();
          rowView = inflater.inflate(R.layout.triplistrow, null);
          ViewHolder viewHolder = new ViewHolder();

          rowView.setTag(viewHolder);
      }

      if(position!=1)
      {
      final ViewHolder holder = (ViewHolder) rowView.getTag();  

      holder.no.setText(String.valueOf(position+1));
      holder.name.setText(values.get(position).name);
      holder.date.setText(values.get(position).fromdate + " to " + values.get(position).tilldate);

      }else
      {



      }


    return rowView;
  }