列表视图上的搜索过滤器在项目单击时返回错误结果

Question

我进行了相当多的研究，发现了三个与我的问题相关的案例。

Solution 1

Solution 2

Solution 3

我并不是说我的情况是独一无二的，只是我不能用我的绳索让他们的答案对我有用。

问题：我有一个listview 被顶部的edit text 过滤。但是，当我点击搜索的项目时，我得到另一个图像被选中的结果。文本工作正常但图片是问题。

例如：列表中包含图像 A、B、C、D 的行

在搜索 C 时，您会得到过滤为 C 的结果。但是单击它会导致显示来自 A 的图像。就像图像的位置没有改变，而是使用原始的 ArrayList 适配器位置。

任何帮助将不胜感激。

我的适配器：

public class SearchListAdapter extends BaseAdapter implements Filterable {
    List<Model> mStringFilterList;
    ValueFilter valueFilter;
    ImageLoader imageLoader = AppController.getInstance().getImageLoader();
    private Activity activity;
    private LayoutInflater inflater;
    private List<Model> modelItems;
    private int mDefaultImageId;

    public SearchListAdapter(Activity activity, List<Model> modelItems) {
        this.activity = activity;
        this.modelItems = modelItems;
        mStringFilterList = modelItems;
    }


    public void setDefaultImageResId(int defaultImage) {
        mDefaultImageId = defaultImage;
    }

    @Override
    public int getCount() {
        return modelItems.size();
    }

    @Override
    public Object getItem(int location) {
        return modelItems.get(location);
    }

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

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

        if (inflater == null)
            inflater = (LayoutInflater) activity
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if (convertView == null)
            convertView = inflater.inflate(R.layout.search_list_row, null);

        if (imageLoader == null)
            imageLoader = AppController.getInstance().getImageLoader();
        NetworkImageView thumbNail = (NetworkImageView) convertView
                .findViewById(R.id.thumbnail);
        TextView title = (TextView) convertView.findViewById(R.id.title);
        TextView rating = (TextView) convertView.findViewById(R.id.rating);
        TextView genre = (TextView) convertView.findViewById(R.id.genre);

        Model m = modelItems.get(position);

        // thumbnail image
        thumbNail.setImageUrl(m.getThumbnailUrl(), imageLoader);
        thumbNail.setTag(position);
        // title
        title.setText(m.getTitle());

        // amount
        rating.setText(String.valueOf(m.getRating()));

        // description
        String genreStr = "";
        for (String str : m.getGenre()) {
            genreStr += str + ", ";
        }
        genreStr = genreStr.length() > 0 ? genreStr.substring(0,
                genreStr.length() - 2) : genreStr;
        genre.setText(genreStr);

        return convertView;
    }

    @Override
    public Filter getFilter() {
        if (valueFilter == null) {
            valueFilter = new ValueFilter();
        }
        return valueFilter;
    }

    private class ValueFilter extends Filter {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults results = new FilterResults();
            if (constraint != null && constraint.length() > 0) {
                ArrayList<Model> filterList = new ArrayList<Model>();
                for (int i = 0; i < mStringFilterList.size(); i++)
                    if ((mStringFilterList.get(i).getTitle().toUpperCase())
                            .contains(constraint.toString().toUpperCase())) {


                        Model m = new Model(mStringFilterList.get(i)
                                .getTitle(), mStringFilterList.get(i)
                                .getThumbnailUrl(), mStringFilterList.get(i)
                                .getRating(), mStringFilterList.get(i)
                                .getGenre());

                        filterList.add(m);
                    }
                results.count = filterList.size();
                results.values = filterList;
            } else {
                results.count = mStringFilterList.size();
                results.values = mStringFilterList;
            }
            return results;

        }

        @Override
        protected void publishResults(CharSequence constraint,
                                      FilterResults results) {
            modelItems = (List<Model>) results.values;
            notifyDataSetChanged();
        }

    }

}

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                String name = ((TextView) view.findViewById(R.id.title))
                        .getText().toString();
                bitmap = ((Model) modelList.get(position)).getThumbnailUrl();
                String rate = ((TextView) view.findViewById(R.id.rating))
                        .getText().toString();
                String genres = ((TextView) view.findViewById(R.id.genre))
                        .getText().toString();

                Intent intent = new Intent(SearchActivity.this, Details.class);
                intent.putExtra(Title, name);
                intent.putExtra("images", bitmap);
                intent.putExtra(Rate, rate);
                intent.putExtra(Genre, genres);

                startActivity(intent);
            }
        });
    }

OnItemclickListener：

Answer 1

您可以更改代码

String name = ((TextView) view.findViewById(R.id.title)).getText().toString();
bitmap = ((Model) modelList.get(position)).getThumbnailUrl();
String rate = ((TextView) view.findViewById(R.id.rating)).getText().toString();
String genres = ((TextView) view.findViewById(R.id.genre)).getText().toString();

到

Model model=(Model)adapter.getItem(position);

它将获取您单击的位置的模型，并将此模型作为序列化或您要执行的操作传递。

希望这能解决问题。

Answer 2

使用

 Model model = (Model) parent.getItemAtPosition(position);

从您的数据集中检索项目，并使用此引用填充Intent 对象。在您过滤适配器中的项目后，您将覆盖 modelItems = (List<Model>) results.values; 的当前引用 modelItems。

编辑

lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

             Model model = (Model) parent.getItemAtPosition(position);
            Intent intent = new Intent(SearchActivity.this, Details.class);
            intent.putExtra(Title, model.getTitle());
            intent.putExtra("images", model.getThumbnailUrl());
            intent.putExtra(Rate, String.valueOf(model.getRating()));
            intent.putExtra(Genre, model.getGenre());

            startActivity(intent);
        }
    });
}

Answer 3

您似乎正在过滤您的适配器，但随后从原始未过滤列表中获取了一个项目。您应该直接从适配器获取该项目。将以下方法添加到您的 BaseAdapter：

public Model getItemAtPosition(int position)
{
    return model.get(position);
}

并从您的 OnItemClickListener 实现中调用它：

bitmap = adapter.getItemAtPosition(position).getThumbnailUrl();

Answer 4

问题是onClickListener返回position=0，当onClick时，因为在您过滤的ListView中它只有一项Cindex=0，其中第0个索引指的是image A，这就是它显示的原因A image 请参阅此解决方案：Get Original Index from Filtered list view