Android 列表之分组ListView

运行效果:


main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="horizontal" android:layout_width="fill_parent"
	android:layout_height="fill_parent">
	<ListView android:layout_width="fill_parent"
		android:layout_height="wrap_content" android:id="@+id/MyListView">
	</ListView>
</LinearLayout>

list_items.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical" android:layout_width="fill_parent"
	android:layout_height="wrap_content" android:id="@+id/myListItem"
	android:paddingBottom="4dip" android:paddingLeft="12dip"
	android:paddingRight="12dip">
	<TextView android:layout_height="wrap_content"
		android:layout_width="fill_parent" android:id="@+id/itemTitle"
		android:textSize="20dip" />
</LinearLayout>

list_items_tag.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent" android:layout_height="wrap_content"
	android:background="#555555" android:paddingLeft="10dip">
	<TextView android:id="@+id/itemTitle" android:layout_width="wrap_content"
		android:layout_height="20dip" android:textColor="#ffffff"
		android:gravity="center_vertical" />
</LinearLayout>

MyAdapter.java

package com.iaiai;

import java.util.List;
import java.util.Map;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

/**
 * 
 * <p>
 * Title: MyAdapter.java
 * </p>
 * <p>
 * E-Mail: [e-mail]
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-10-10
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class MyAdapter extends BaseAdapter {

	private LayoutInflater mInflater;

	private List<Map<String, String>> listData;

	private List<Map<String, String>> splitData;

	public MyAdapter(Context context,
			List<Map<String, String>> listData,
			List<Map<String, String>> splitData) {
		this.mInflater = LayoutInflater.from(context);
		this.listData = listData;
		this.splitData = splitData;
	}

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

	@Override
	public Object getItem(int position) {
		return listData.get(position);
	}

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

	@Override
	public boolean isEnabled(int position) {
		if (splitData.contains(listData.get(position))) {
			return false;
		}
		return super.isEnabled(position);
	}

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {
		if (splitData.contains(listData.get(position))) {
			convertView = mInflater.inflate(R.layout.list_items_tag, null);
		} else {
			convertView = mInflater.inflate(R.layout.list_items, null);
		}

		TextView textView = (TextView) convertView.findViewById(R.id.itemTitle);
		textView.setText(listData.get(position).get("itemTitle"));

		return convertView;
	}

}

MainActivity.java

package com.iaiai;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;

/**
 * 
 * <p>
 * Title: MainActivity.java
 * </p>
 * <p>
 * E-Mail: [e-mail]
 * </p>
 * <p>
 * QQ: 176291935
 * </p>
 * <p>
 * Http: iaiai.iteye.com
 * </p>
 * <p>
 * Create time: 2011-10-10
 * </p>
 * 
 * @author 丸子
 * @version 0.0.1
 */
public class MainActivity extends Activity {

	private List<Map<String, String>> mylist = new ArrayList<Map<String, String>>();
	private List<Map<String, String>> splitList = new ArrayList<Map<String, String>>();

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);

		ListView list = (ListView) findViewById(R.id.MyListView);

		setData(); // 设置数据

		// 配置适配器
		MyAdapter adapter = new MyAdapter(this, mylist, splitList); // 布局里的控件id
		// 添加并且显示
		list.setAdapter(adapter);
	}

	private void setData() {
		// 组织数据源
		Map<String, String> mp = new HashMap<String, String>();
		mp.put("itemTitle", "A");
		mylist.add(mp);
		splitList.add(mp);

		for (int i = 0; i < 3; i++) {
			Map<String, String> map = new HashMap<String, String>();
			map.put("itemTitle", "文章1-" + i);
			mylist.add(map);
		}

		mp = new HashMap<String, String>();
		mp.put("itemTitle", "B");
		mylist.add(mp);
		splitList.add(mp);

		for (int i = 0; i < 6; i++) {
			Map<String, String> map = new HashMap<String, String>();
			map.put("itemTitle", "文章2-" + i);
			mylist.add(map);
		}
	}

}

========================================================================
以上为示例所有代码，以下为说明

禁止标签项的响应事件，父类BaseAdapter中提供了isEnable的()方法，我们看看这个方法：

//默认情况，如果这个方法不是分割符，返回true
//分隔符是无选中和无点击事件的
//说白了，你想不想把改position项当做分隔符，想的话就返回false，否则返回true
public boolean isEnabled (int position)

这个方法刚好用来禁用标签项的响应事件。

@Override
public boolean isEnabled(int position) {
	if (splitData.contains(listData.get(position))) {
		return false;
	}
	return super.isEnabled(position);
}

现在标签项不会再有任何触控效果了，犹如一块死木板。