如何在自定义适配器Android Studio Java中为行设置标记

Question

我正在尝试为该行设置一个标记（或者至少是该行中的某个内容，最好是该行）。然后，当我点击该行时，我可以得到标签。我以为这是我必须做的，但不管我点击什么，标签总是空的

我的代码示例显示了我试图将标记设置为textview，因为我不知道如何将其设置为行

这是customAdapter类中的getView代码

int counter = 0;

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

    LayoutInflater layoutInflater = LayoutInflater.from(getContext());

    View customView = layoutInflater.inflate(R.layout.my_row, parent, false);

    ViewHolder holder = new ViewHolder();

    holder.name = (TextView)customView.findViewById(R.id.nameTextView);
    holder.picture = (ImageView)customView.findViewById(R.id.pictureImageView);

    holder.name.setText(allNames.get(position));
    holder.picture.setImageResource(allPictures.get(position));

    //This does not work ---> holder.name.setTag(counter);

    counter ++;
    return customView;
}

这是我的另一个班级的听众

listVIew.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> adapterView, View view, final int position, long l) {

           Toast.makeText(getApplicationContext(), "tag is " + view.getTag(), Toast.LENGTH_SHORT).show();

        }
    });

任何帮助都将不胜感激。谢谢

Answer 1

试试这个：

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

    ViewHolder holder;

    if(convertView == null) {

        // inflate the layout
        LayoutInflater layoutInflater = LayoutInflater.from(getContext());
        convertView = layoutInflater.inflate(R.layout.my_row, parent, false);

        // set up the ViewHolder
        holder = new ViewHolder();

        holder.name = (TextView) convertView.findViewById(R.id.nameTextView);
        holder.picture = (ImageView) convertView.findViewById(R.id.pictureImageView);

        // store the holder with the view.
        convertView.setTag(holder);

    } else {
        // we've just avoided calling findViewById() on resource everytime
        // just use the viewHolder
        holder = (ViewHolder) convertView.getTag();
    }

    holder.name.setText(allNames.get(position));
    holder.picture.setImageResource(allPictures.get(position));
    holder.name.setTag(counter);

    counter++;

    return convertView;
}