java - 获取ListView中所选项目的标题文本

Question

有没有办法在点击时获取所选项目的标题文本(来自该部分)？

使用此代码，我可以获取所选项目的文本，但我也想知道在哪个标题中单击了该项目。

@Override
public void onListItemClick(ListView lv, View v, int position, long id) {
    System.out.println( "CLICKED LOCATION: " + 
        ((TextView) v.findViewById(R.id.list_content1)).getText().toString() );
}

我根据下载并保存在包含一个键的 TreeMap 和另一个包含键和字符串的 TreeMap 中的数据动态创建标题和行 ( TreeMap<String, TreeMap<String, String>> ) 。

然后我循环两个 map 以获取标题和行:

public void setLocationsCompanyHashMap(TreeMap<String, TreeMap<String, Object>> map)
    {
        companyMap = map;

        List<Item> items = new ArrayList<Item>();

        Iterator<?> it = companyMap.entrySet().iterator();
        while (it.hasNext()) {


            Map.Entry pairs = (Map.Entry)it.next();
            items.add(new Header(null, (String) pairs.getKey()));

            Iterator<?> ite = ((Map<String, Object>) pairs.getValue()).entrySet().iterator();
            while (ite.hasNext()) {
                Map.Entry in_pairs = (Map.Entry)ite.next();
                items.add(new ListItem(null, (String) in_pairs.getKey()));
            }

        }

        LocationsArrayAdapter adapter = new LocationsArrayAdapter(getActivity(), items);
        setListAdapter(adapter);
    }

这是我的 xml

<ListView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:cacheColorHint="@android:color/transparent" 
    android:choiceMode="singleChoice"/>

标题.java:

import android.view.LayoutInflater;

public class Header implements Item {

    private final String         name;

    public Header(LayoutInflater inflater, String name) {
        this.name = name;
    }

    @Override
    public int getViewType() {
        return RowType.HEADER_ITEM.ordinal();
    }

    @Override
    public View getView(LayoutInflater inflater, View convertView) {
        View view;
        if (convertView == null) {
            view = (View) inflater.inflate(R.layout.header, null);
            // Do some initialization
        } else {
            view = convertView;
        }

        TextView text = (TextView) view.findViewById(R.id.separator);
        text.setText(name);

        return view;
    }

}

location_header.xml:

<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center" android:scrollbars="none"
    style="?android:attr/listSeparatorTextViewStyle" />

Listitem.java

import android.view.LayoutInflater;

public class ListItem implements Item {
    private final String         str1;
    private final LayoutInflater inflater;

    public ListItem(LayoutInflater inflater, String text1) {
        this.str1 = text1;
        this.inflater = inflater;
    }

    @Override
    public int getViewType() {
        return RowType.LIST_ITEM.ordinal();
    }

    @Override
    public View getView(LayoutInflater inflater, View convertView) {
        View view;
        if (convertView == null) {
            view = (View) inflater.inflate(R.layout.locations_list_item, null);
            // Do some initialization
        } else {
            view = convertView;
        }

        TextView text1 = (TextView) view.findViewById(R.id.list_content1);
        text1.setText(str1);

        return view;
    }

}

location_item.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:background="@drawable/listitem_background">

    <TextView
        android:id="@+id/list_content1"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_margin="5dip"
        android:clickable="false"
        android:gravity="center"
        android:longClickable="false"
        android:paddingBottom="1dip"
        android:paddingTop="1dip"
        android:textColor="#28465a"
        android:textSize="17sp"
        android:textStyle="bold" 
        />


</LinearLayout>

界面项目:

导入 android.view.LayoutInflater;

public interface Item {
    public int getViewType();
    public View getView(LayoutInflater inflater, View convertView);
}

LocationsArrayAdapter.java:

import java.util.List;

public class LocationsArrayAdapter extends ArrayAdapter<Item> {

    private LayoutInflater mInflater;

    public enum RowType {
        LIST_ITEM, HEADER_ITEM
    }

    private List<Item> items;

    public LocationsArrayAdapter(Context context, List<Item> items) {
        super(context, 0, items);
        this.items = items;
        mInflater = LayoutInflater.from(context);
    }

    @Override
    public int getViewTypeCount() {
        return RowType.values().length;

    }

    @Override
    public int getItemViewType(int position) {
        return items.get(position).getViewType();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        return items.get(position).getView(mInflater, convertView);
    }

}

在我的 Activity 中，我只是添加一个新 fragment (LocationViewFragment.java)

getSupportFragmentManager()
        .beginTransaction()
        .replace(R.id.viewLayout, fragment)
        .commit();

Answer 1

好的，我能想到的最简单的解决方案就是将 Item 对象标记到与其相关的 TextView 对象。代码如下:

text1.setText(str1);
text1.setTag(this);

以及onListItemClick:

Header header = (Header) v.getTag();

但我强烈建议您在适配器本身内部设置 getView 方法，而不是从 subview 中调用它。并将数组中的所有项目保存在其中，这样您就可以使用onListItemClick位置值直接访问您想要的Header