我已经尝试了一段时间,但似乎无法做到。我将适配器应用于对象,但是当我在视图中输入字符时,仍然没有任何反应。

public View getView(int position, View view, ViewGroup parent) {
    ViewHolder holder;
    if (view == null) {
        holder = new ViewHolder();

        view = mInflater.inflate(R.layout.list_item, parent, false);

        holder.nameTxt = (AutoCompleteTextView) view.findViewById(R.id.name_txt);

        String[] drinkArray = activity.getResources().getStringArray(R.array.drink_array);
        holder.adapter = new ArrayAdapter<>(activity, android.R.layout.simple_list_item_1, drinkArray);
        holder.nameTxt.setAdapter(holder.adapter);

        view.setTag(holder);
    } else {
        holder = (ViewHolder) view.getTag();
    }

    if (!itemExists(position)) return view;

    ListItem item = getItem(position);
    holder.nameTxt.setText(item.name);

    holder.nameTxt.setAdapter(holder.adapter);

    holder.nameTxt.setTag(position);

    holder.nameTxt.setOnFocusChangeListener(this);

    return view;
}

@Override
public void onFocusChange(View v, boolean hasFocus) {
    if (hasFocus) return;
    int position;
    ListItem item;
    switch (v.getId()) {
        case R.id.name_txt:
            position = (int) v.getTag();
            if (!itemExists(position)) return;
            item = getItem(position);
            AutoCompleteTextView txtView = (AutoCompleteTextView) v;
            item.name = txtView.getText().toString();
            break;
        default:
            Log.e(TAG, "Unknown onFocusChange View ID: " + v.getId());
            break;
    }
}

public class ViewHolder {
    public AutoCompleteTextView nameTxt;
    public ArrayAdapter<String> adapter;
}

public class ListItem {
    public String name;

    public ListItem() {
        name = "";
    }
}


好了,上面的代码是我到目前为止所拥有的,可以完美地保存和加载来自textview的数据。

最佳答案

我认为您的方法getView else中存在错误。您可以尝试以下
更改

holder=(viewHolder) View.getTag();


通过

holder = view;


然后别的这种类型

ViewHolder item = (ViewHolder) holder.getTag();
...

10-04 22:26