Android Custom BaseAdapter

Question

我有一个BaseAdapter来显示带有部分的列表视图。对于每一行，我都有一个文本视图，现在我想为每一行添加另一个文本视图。在 Item 类和 getView() 方法中，我添加了一个新的字符串text_id，但现在当我调用适配器时，出现此错误：Item(String, String) in item cannot be applied 。

public class AlphabetListAdapter extends BaseAdapter {
public static abstract class Row {}
public static final class Section extends Row {
    public final String text;
    public Section(String text) {
        this.text = text;
    }
}
public static final class Item extends Row {
    public final String text;
    public final String text_id;
    public Item(String text, String text_id ) {
        this.text = text;
        this.text_id = text_id;
    }
}
private List<Row> rows;
public void setRows(List<Row> rows) {
    this.rows = rows;
}
@Override
public int getCount() {
    return rows.size();
}
@Override
public Row getItem(int position) {
    return rows.get(position);
}
@Override
public long getItemId(int position) {
    return position;
}
@Override
public int getViewTypeCount() {
    return 2;
}
@Override
public int getItemViewType(int position) {
    if (getItem(position) instanceof Section) {
        return 1;
    } else {
        return 0;
    }
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    View view = convertView;
    if (getItemViewType(position) == 0) { // Item
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = (LinearLayout) inflater.inflate(R.layout.row_item, parent, false);
        }
        Item item = (Item) getItem(position);
        TextView textView = (TextView) view.findViewById(R.id.textView1);
        TextView textView_id = (TextView) view.findViewById(R.id.id_cl);
        textView.setText(item.text);
        textView_id.setText(item.text_id);
    } else { // Section
        if (view == null) {
            LayoutInflater inflater = (LayoutInflater) parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = (LinearLayout) inflater.inflate(R.layout.row_section, parent, false);
        }
        Section section = (Section) getItem(position);
        TextView textView = (TextView) view.findViewById(R.id.textView1);
        textView.setText(section.text);
    }
    return view;
}
}

in OnCreateView（）

List<String> clienti = populateclienti();
    Collections.sort(clienti);
    List<AlphabetListAdapter.Row> rows = new ArrayList<AlphabetListAdapter.Row>();
    int start = 0;
    int end = 0;
    String previousLetter = null;
    Object[] tmpIndexItem = null;
     for (String country : clienti) {
        String firstLetter = country.substring(0, 1);
        // If we've changed to a new letter, add the previous letter to the alphabet scroller
        if (previousLetter != null && !firstLetter.equals(previousLetter)) {
            end = rows.size() - 1;
            tmpIndexItem = new Object[3];
            tmpIndexItem[0] = previousLetter.toUpperCase(Locale.ITALIAN);
            tmpIndexItem[1] = start;
            tmpIndexItem[2] = end;
            alphabet.add(tmpIndexItem);
            start = end + 1;
        }
        // Check if we need to add a header row
        if (!firstLetter.equals(previousLetter)) {
            rows.add(new AlphabetListAdapter.Section(firstLetter));
            sections.put(firstLetter, start);
        }
        // Add the country to the list
        rows.add(new AlphabetListAdapter.Item(country));
        previousLetter = firstLetter;
    }
    if (previousLetter != null) {
        // Save the last letter
        tmpIndexItem = new Object[3];
        tmpIndexItem[0] = previousLetter.toUpperCase(Locale.ITALY);
        tmpIndexItem[1] = start;
        tmpIndexItem[2] = rows.size() - 1;
        alphabet.add(tmpIndexItem);
    }
    adapter.setRows(rows);
    lista.setAdapter(adapter);
    lista.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
            TextView temp = (TextView) view.findViewById(R.id.textView1);
            String str = temp.getText().toString();
            Toast.makeText(getActivity(),str + " is pressed " + position, Toast.LENGTH_SHORT).show();
        }
    });
    updateList();
    return rootView;
    }

row_item.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal"
android:padding="10dp" >
<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="TextView"
    android:textColor="#000000"
    android:textSize="20sp" />
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:textAppearance="?android:attr/textAppearanceSmall"
    android:text="Small Text"
    android:id="@+id/id_cl" />

Answer 1

实现

此目的的最简单方法是在 XML 布局文件中添加另一个TextView R.layout.row_section