Question

我想使用GridView布局，以便Gridlayout的每个项目都有自己的ListView。我一直在寻找代码示例，但我还没找到。我应该为GridView和ListView使用不同的适配器类吗？提前谢谢！

编辑：我创建了一个显示所有部分图块的GridView，我希望每个网格项都包含一个列表，所以我在GridView项目的布局中添加了一个ListView。不幸的是，我在将listview连接到适配器时遇到了问题。

这是gridView的适配器：

public class MainViewAdapter extends ArrayAdapter<Category> {
private Context mContext;
private int layoutResourceId;
private ArrayList<Category> mGridData = new ArrayList<Category>();
ArrayAdapter adapter;

public MainViewAdapter(Context mContext, int layoutResourceId, ArrayList<Category> mGridData) {
    super(mContext, layoutResourceId, mGridData);
    this.layoutResourceId = layoutResourceId;
    this.mContext = mContext;
    this.mGridData = mGridData;
}

public void setGridData(ArrayList<Category> mGridData) {
    this.mGridData = mGridData;
    notifyDataSetChanged();
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View row = convertView;
    ViewHolder holder;
    String imageUrl;

    if (row == null) {
        LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);
        holder = new ViewHolder();
        holder.SubListView = (ListView) row.findViewById(R.id.SubList);
        holder.titleTextView = (TextView) row.findViewById(R.id.category_title);
        holder.simpleDraweeView = (SimpleDraweeView) row.findViewById(R.id.category_image);
        row.setTag(holder);
    } else {
        holder = (ViewHolder) row.getTag();
    }

    Category category = mGridData.get(position);
    Log.i("position", "" + position);
    holder.titleTextView.setText(Html.fromHtml(category.getTitle()));
    imageUrl = category.getImage();
    Log.i("image url",imageUrl );
    Uri imageUri = Uri.parse(imageUrl);
    holder.simpleDraweeView.setImageURI(imageUri);

    List SubCategories = category.getSubCateg();
    Log.i("@MainViewAdapter - SubCategories", category.getSubCateg().toString());

    //list SubCategories to ArrayList
    ArrayList<SubCategory> listOfSub = new ArrayList<>(SubCategories.size());
    listOfSub.addAll(SubCategories);
    Log.i("listOfSub",listOfSub.toString());

    //ArrayList to ListView
    holder.SubListView.setAdapter(adapter);

    return row;
}

static class ViewHolder {
    TextView titleTextView;
    SimpleDraweeView simpleDraweeView;
    ListView SubListView;
}}

这是listview的适配器：

public class SubListAdapter extends ArrayAdapter<SubCategory> {
private int layoutResourceId;
private ArrayList<SubCategory> mSubGridData = new ArrayList<SubCategory>();
ArrayAdapter adapter;

private final Context mContext;

public SubListAdapter(Context mContext, int layoutResourceId, ArrayList<SubCategory> mSubGridData) {
    super(mContext, R.layout.subcategory_item, mSubGridData);

    this.layoutResourceId = layoutResourceId;
    this.mContext = mContext;
    this.mSubGridData = mSubGridData;
}

public void setSubGridData(ArrayList<SubCategory> mSubGridData) {
    this.mSubGridData = mSubGridData;
    notifyDataSetChanged();
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    View row = convertView;
    SubListAdapter.ViewHolder holder;
    String imageUrl;

    if (row == null) {
        LayoutInflater inflater = ((Activity) mContext).getLayoutInflater();
        row = inflater.inflate(layoutResourceId, parent, false);
        holder = new ViewHolder();
        holder.SubTitleTextView = (TextView) row.findViewById(R.id.subCatItemTitle);
        row.setTag(holder);
    } else {
        holder = (SubListAdapter.ViewHolder) row.getTag();

    return rowView;
}

static class ViewHolder {
    TextView SubTitleTextView;
    ListView SubListView;
}}

我遇到第二个适配器的问题。

Answer 1

答案是肯定的。还有另一个解决方案。

将相对/线性布局添加为GridView的项目。
在GridView的适配器类中，将子项添加到@getView（）中动态。但由于性能的原因，我不推荐它。加载此类型视图需要很长时间。

写下你需要什么然后我会更新我的答案以获得另一种解决方案（如果可能的话）祝你好运

Answer 2

你只需为它创建一个GridView android setAdapter。在这个适配器中，创建一个layout.xml，里面有一个listView。然后像往常一样。

ps：如果你使用layout_width =＆＃34; warp_content＆＃34;你将无法获得嵌套listView的真实高度。因为嵌套的listView无法通过＆＃34; warp_content

获得真正的高度

测量它会没事的。

GridView中的ListView

2 个答案: