我的Android进阶之旅------>Android二级ListView列表的实现

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实现例如以下图所看到的的二级列表效果

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首先是在布局文件里，布局两个ListView,代码例如以下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="horizontal" >
    <ListView
        android:id="@+id/listView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="#e4e3de"
        android:choiceMode="singleChoice"
        android:divider="@drawable/listitem_divide"
        android:listSelector="#00000000"
        android:scrollbars="none" >
    </ListView>

    <ListView
        android:id="@+id/subListView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="5dp"
        android:layout_weight="1"
        android:background="#e4e3de"
        android:divider="@drawable/listitem_divide" >
    </ListView>
</LinearLayout>

接着给两个ListView分别写适配器，父类ListView适配器为MyListAdapter，子类ListView适配器为MySubListAdapter。代码例如以下：

/src/com/oyp/multilistview/MyListAdapter.java

package com.oyp.multilistview;

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

public class MyListAdapter extends BaseAdapter {
	Context context;
	LayoutInflater inflater;
	String[] categories;
	int last_item;
	private int selectedPosition = -1;

	public MyListAdapter(Context context, String[] categories) {
		this.context = context;
		this.categories = categories;
		inflater = LayoutInflater.from(context);
	}

	@Override
	public int getCount() {
		return categories.length;
	}

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

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

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder holder = null;
		if (convertView == null) {
			convertView = inflater.inflate(R.layout.mylist_item, null);
			holder = new ViewHolder();
			holder.textView = (TextView) convertView
					.findViewById(R.id.textView);
			holder.layout = (LinearLayout) convertView
					.findViewById(R.id.colorlayout);
			convertView.setTag(holder);
		} else {
			holder = (ViewHolder) convertView.getTag();
		}
		if (selectedPosition == position) {
			holder.textView.setTextColor(Color.WHITE);
			holder.layout.setBackgroundColor(Color.TRANSPARENT);
		} else {
			holder.textView.setTextColor(Color.BLUE);
			holder.layout.setBackgroundColor(Color.LTGRAY);
		}
		holder.textView.setText(categories[position]);
		holder.textView.setTextColor(Color.BLACK);
		return convertView;
	}

	public static class ViewHolder {
		public TextView textView;
		public LinearLayout layout;
	}

	public void setSelectedPosition(int position) {
		selectedPosition = position;
	}

}

相应的item布局文件为：/res/layout/mylist_item.xml

<?
xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/colorlayout"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >
    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dip"
        android:layout_marginLeft="8dip"
        android:layout_marginTop="8dip"
        android:textSize="16dip" />
</LinearLayout>

/src/com/oyp/multilistview/MySubListAdapter.java

package com.oyp.multilistview;

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

public class MySubListAdapter extends BaseAdapter {
	Context context;
	LayoutInflater layoutInflater;
	String[][] sub_categories;
	public int categoryPoition;

	public MySubListAdapter(Context context, String[][] sub_categories, int position) {
		this.context = context;
		this.sub_categories = sub_categories;
		layoutInflater = (LayoutInflater) context
				.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
		this.categoryPoition = position;
	}

	@Override
	public int getCount() {
		return sub_categories.length;
	}

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

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

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder viewHolder = null;
		if (convertView == null) {
			convertView = layoutInflater.inflate(R.layout.mysublist_item, null);
			viewHolder = new ViewHolder();
			viewHolder.textView = (TextView) convertView
					.findViewById(R.id.subTextView);
			convertView.setTag(viewHolder);
		} else {
			viewHolder = (ViewHolder) convertView.getTag();
		}
		viewHolder.textView.setText(sub_categories[categoryPoition][position]);
		viewHolder.textView.setTextColor(Color.BLACK);
		return convertView;
	}

	public static class ViewHolder {
		public TextView textView;
	}

}

相应的item布局文件为：/res/layout/mysublist_item.xml

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

    <TextView
        android:id="@+id/subTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="8dip"
        android:layout_marginLeft="8dip"
        android:layout_marginTop="8dip"
        android:textSize="16dip" />
</LinearLayout>

最后是Activity的实现，代码例如以下：

/src/com/oyp/multilistview/MainActivity.java

package com.oyp.multilistview;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;

public class MainActivity extends Activity {

	private ListView listView;
	private ListView subListView;
	private MyListAdapter myAdapter;
	private MySubListAdapter subAdapter;
	String sub_categories[][] = new String[][] {
			new String[] { "所有美食", "本帮江浙菜", "川菜", "粤菜", "湘菜", "东北菜", "台湾菜",
					"新疆/清真", "素菜", "火锅", "自助餐", "小吃快餐", "日本", "韩国料理", "东南亚菜",
					"西餐", "面包甜点", "其它" },
			new String[] { "所有休闲娱乐", "咖啡厅", "酒吧", "茶馆", "KTV", "电影院", "游乐游艺",
					"公园", "景点/郊游", "洗浴", "足浴按摩", "文化艺术", "DIY手工坊", "桌球馆",
					"桌面游戏", "很多其它休闲娱乐" },
			new String[] { "所有购物", "综合商场", "服饰鞋包", "运动户外", "珠宝饰品", "化妆品",
					"数码家电", "亲子购物", "家居建材", "书店", "书店", "眼镜店", "特色集市",
					"很多其它购物场所", "食品茶酒", "超市/便利店", "药店" },
			new String[] { "所有酒店", "经济型酒店", "豪华酒店", "度假酒店", "公寓式酒店",
					"客栈/青旅/民宿", "主题精品酒店", " 温泉酒店", "亲子酒店" },
			new String[] { "所有丽人", "美发", "美容/SPA", "美甲", "瘦身纤体", "个性写真",
					"瑜伽/舞蹈", "其它" },
			new String[] { "所有亲子", "亲子游乐", "亲子摄影", "幼儿教育", "主题公园/游乐场",
					"展览/演出/赛事", "景点郊游", "DIY手工", "农家乐" },
			new String[] { "所有生活", "商场购物劵", "汽车服务", "鲜花婚庆", "体检保健", "宠物服务",
					"家政服务", "照片冲印", "配眼镜" },

	};
	String categories[] = new String[] { "美食", "休闲娱乐", "购物", "酒店", "丽人", "亲子",
			"生活服务" };

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		listView = (ListView) findViewById(R.id.listView);
		subListView = (ListView) findViewById(R.id.subListView);
		myAdapter = new MyListAdapter(getApplicationContext(), categories);
		listView.setAdapter(myAdapter);
		setSubList(0);
		listView.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1,
					int position, long arg3) {
				setSubList(position);
			}
		});
	}
	public void setSubList(int position) {
		final int location = position;
		myAdapter.setSelectedPosition(position);
		myAdapter.notifyDataSetInvalidated();
		subAdapter = new MySubListAdapter(getApplicationContext(), sub_categories,
				position);
		subListView.setAdapter(subAdapter);
		subListView.setOnItemClickListener(new OnItemClickListener() {
			@Override
			public void onItemClick(AdapterView<?
> arg0, View arg1,
					int position, long arg3) {
				// TODO Auto-generated method stub
				Toast.makeText(getApplicationContext(),
						sub_categories[location][position], Toast.LENGTH_SHORT)
						.show();
			}
		});
	}	
	
}


执行效果例如以下所看到的：

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                            ====================================================================================

  作者：欧阳鹏  欢迎转载，与人分享是进步的源泉！

  转载请保留原文地址：http://blog.csdn.net/ouyang_peng

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