Question

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

我如何实现这一目标？您可以指点我的任何样本或教程？

谢谢。

Answer 1

使用自定义适配器列出并编辑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，如answer

Answer 2

制作自己的适配器：

BaseAdapter已经提供了使用不同View类型（列表项单元格的不同布局）和有效回收视图的方法：

getViewTypeCount（）：存在多少个不同视图（布局）的计数。

getItemViewType（）：返回一个整数，以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，此处返回的值必须为0到n。您不能跳过索引。

公共类MyAdapter扩展了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 3

您可以在适配器中进行更改...这样的事情。 @position 1：“空白”视图将被显示 @rest职位：“triplistrow”将显示

   @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;
  }

列表视图：只有一个包含多个文本视图的列表项

3 个答案: