listview实现点赞收藏功能

要实现ListView的点赞和收藏功能，你需要在ListView的每个item中添加两个按钮，一个是点赞按钮，一个是收藏按钮。

1. 首先，在ListView的item布局文件中添加点赞和收藏按钮：

<LinearLayout
    ...
    android:orientation="horizontal">

    <!-- 左侧图标 -->
    <ImageView
        ...
        android:id="@+id/icon" />

    <!-- 中间布局 -->
    <LinearLayout
        ...
        android:orientation="vertical">

        <TextView
            ...
            android:id="@+id/title" />

        <TextView
            ...
            android:id="@+id/content" />

    </LinearLayout>

    <!-- 右侧操作按钮 -->
    <LinearLayout
        ...
        android:orientation="horizontal">

        <!-- 点赞按钮 -->
        <Button
            ...
            android:id="@+id/like_btn"
            android:text="赞" />

        <!-- 收藏按钮 -->
        <Button
            ...
            android:id="@+id/favorite_btn"
            android:text="收藏" />

    </LinearLayout>

</LinearLayout>

2. 在ListView的Adapter中，为点赞和收藏按钮添加点击事件，并更新数据源：

public class MyAdapter extends BaseAdapter {

    private List<Item> mDataList;

    public MyAdapter(List<Item> dataList) {
        mDataList = dataList;
    }

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

    @Override
    public Item getItem(int position) {
        return mDataList.get(position);
    }

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

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            convertView = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_item, parent, false);
            viewHolder = new ViewHolder(convertView);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        final Item item = mDataList.get(position);
        viewHolder.icon.setImageResource(item.getIcon());
        viewHolder.title.setText(item.getTitle());
        viewHolder.content.setText(item.getContent());

        viewHolder.likeBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                item.setLiked(!item.isLiked());
                notifyDataSetChanged();
            }
        });

        viewHolder.favoriteBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                item.setFavorite(!item.isFavorite());
                notifyDataSetChanged();
            }
        });

        return convertView;
    }

    public static class ViewHolder {
        ImageView icon;
        TextView title;
        TextView content;
        Button likeBtn;
        Button favoriteBtn;

        public ViewHolder(View itemView) {
            icon = itemView.findViewById(R.id.icon);
            title = itemView.findViewById(R.id.title);
            content = itemView.findViewById(R.id.content);
            likeBtn = itemView.findViewById(R.id.like_btn);
            favoriteBtn = itemView.findViewById(R.id.favorite_btn);
        }
    }

}

3. 在Item类中添加isLiked和isFavorite属性，以及相关的getter和setter方法：

public class Item {

    private int icon;
    private String title;
    private String content;
    private boolean isLiked;
    private boolean isFavorite;

    public Item(int icon, String title, String content) {
        this.icon = icon;
        this.title = title;
        this.content = content;
        this.isLiked = false;
        this.isFavorite = false;
    }

    public int getIcon() {
        return icon;
    }

    public void setIcon(int icon) {
        this.icon = icon;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }

    public boolean isLiked() {
        return isLiked;
    }

    public void setLiked(boolean liked) {
        isLiked = liked;
    }

    public boolean isFavorite() {
        return isFavorite;
    }

    public void setFavorite(boolean favorite) {
        isFavorite = favorite;
    }

}

这样，就可以实现ListView的点赞和收藏功能了。