Question

我有一个自定义适配器，可以在列表视图中创建组。我现在想要改变它，因此组内的元素将不仅仅包含一行文本。这是我的适配器

类CustomAdapter扩展了BaseAdapter {

private static final int TYPE_ITEM = 0;
private static final int TYPE_SEPARATOR = 1;

private ArrayList<String> mData = new ArrayList<String>();
private TreeSet<Integer> sectionHeader = new TreeSet<Integer>();

private LayoutInflater mInflater;

public CustomAdapter(Context context) {
    mInflater = (LayoutInflater) context
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

public void addItem(final String item) {
    mData.add(item);
    notifyDataSetChanged();
}

public void addSectionHeaderItem(final String item) {
    mData.add(item);
    sectionHeader.add(mData.size() - 1);
    notifyDataSetChanged();
}

@Override
public int getItemViewType(int position) {
    return sectionHeader.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
}

@Override
public int getViewTypeCount() {
    return 2;
}

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

@Override
public String getItem(int position) {
    return mData.get(position);
}

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

public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder = null;
    int rowType = getItemViewType(position);

    if (convertView == null) {
        holder = new ViewHolder();
        switch (rowType) {
            case TYPE_ITEM:
                convertView = mInflater.inflate(R.layout.snippet_item1, null);
                holder.textView = (TextView) convertView.findViewById(R.id.text);
                break;
            case TYPE_SEPARATOR:
                convertView = mInflater.inflate(R.layout.snippet_item2, null);
                holder.textView = (TextView) convertView.findViewById(R.id.textSeparator);
                break;
        }
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }
    holder.textView.setText(mData.get(position));

    return convertView;
}

public static class ViewHolder {
    public TextView textView;
}

}

和列表项的

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center_vertical" >

    <TextView android:id="@id/text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:textAppearance="?attr/textAppearanceListItem" />

    <TextView android:id="@id/text2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/text"
        android:layout_alignStart="@id/text"
        android:textAppearance="?attr/textAppearanceListItemSmall" />

</RelativeLayout>

我将其更改为接受ArrayList＆gt;（）而不是ArrayList（），但我不确定如何设置两行文本。一旦我开始工作，我就会为标题执行类似的操作。

Answer 1

幸运的是，我想到了这一点。在交换机中添加此

case TYPE_ITEM:
convertView = mInflater.inflate(R.layout.snippet_item1, null);
holder.textView = (TextView) convertView.findViewById(R.id.text);
holder.textView2 = (TextView) convertView.findViewById(R.id.text2);
holder.textView2.setText("test");
break;

获取其他文本视图。然后将文本视图添加到viewholder，如此

public static class ViewHolder {
    public TextView textView;
    public TextView textView2;
}

我不得不移动holder.textView.setText（mData.get（position））;进入交换机，因为它不存在于标头上，从而导致致命错误。从这里我只需要更改它接受的项目并适当地解析它们。

修改适配器以在listview

1 个答案: