ArrayList动态删除 自定义Adapter (附源码)

ArrayList动态删除 自定义Adapter
上网收集了一些资料，都是从别人的代码中修改过来，一起分享。
1.先把所要的xml文件贴出来
a)listview.xml

<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="vertical" >

    <ListView
        android:id="@+id/listview_list"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

b)base_adapter_item.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="fill_parent"
    android:orientation="horizontal" >

    <ImageView 
	    android:id="@+id/base_item.image"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"
	    android:layout_marginRight="20dp"
	    />
    <TextView 
	    android:id="@+id/base_item_text"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"
	    />

</LinearLayout>

c)activity: DeleteListView.java

package com.fx;

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

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

import com.fx.adapter.ListAdapter;

/**
 * @author liucanwen
 * @since 2012-08-10
 * 联系qq 124597202
 */
public class DeleteListView extends Activity
{
	private ArrayList<String> conList = new ArrayList<String>();
	private ListView listView = null;
	private List<Map<String, String>> list = new ArrayList<Map<String, String>>();
	ListAdapter listAdapter;

	@Override
	public void onCreate(Bundle savedInstanceState)
	{
		super.onCreate(savedInstanceState);
		setContentView(R.layout.listview);

		initsView();// 调用初始化方法

		listView.setOnItemClickListener(new OnItemClickListener()
		{
			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int position,
					long arg3)
			{
				Toast.makeText(DeleteListView.this, arg1.getId()+"", Toast.LENGTH_LONG)
						.show();

				listAdapter.removeItem(position);
			}
		});
	}

	// 初始化方法
	public void initsView()
	{
		conList.add("图片1");
		conList.add("图片2");
		conList.add("图片3");
		conList.add("图片4");
		conList.add("图片5");
		conList.add("图片6");

		listView = (ListView) findViewById(R.id.listview_list);// 初始化ListView组件

		// 通过BaseAdapter方法获取ListView组件内容
		 listAdapter = new ListAdapter(this,R.drawable.icon,conList);
		 listView.setAdapter(listAdapter);
	}
}

d)自定义适配器：ListAdapter.java

package com.fx.adapter;

import java.util.ArrayList;
import java.util.HashMap;
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.ImageView;
import android.widget.TextView;

import com.fx.R;

/**
 * 自定义适配器
 * @author liucanwen
 * @since 2012-08-10
 * 联系qq 124597202
 */
public class ListAdapter extends BaseAdapter
{
	private Context context;
	int a;
	ArrayList<String> list;
	LayoutInflater lay;

	private Map<Integer, View> map = new HashMap<Integer, View>();

	public ListAdapter(Context context, int a, ArrayList<String> list)
	{
		this.context = context;
		this.a = a;
		this.list = list;
		lay = LayoutInflater.from(this.context);
	}

	@Override
	public int getCount()
	{
		// TODO Auto-generated method stub
		return list.size();
	}

	@Override
	public Object getItem(int position)
	{
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public long getItemId(int position)
	{
		// TODO Auto-generated method stub
		return position;
	}

	//删除
	public void removeItem(int id)
	{
		list.remove(id);
		notifyDataSetInvalidated();
		notifyDataSetChanged();
	}


	@Override
	public View getView(int position, View convertView, ViewGroup parent)
	{
		// TODO Auto-generated method stub
		convertView = map.get(position);
		ViewHolder viewHolder;
		if (convertView == null)
		{
			convertView = lay.inflate(R.layout.base_adapter_item, null);
			viewHolder = new ViewHolder();
			viewHolder.textView = (TextView) convertView
					.findViewById(R.id.base_item_text);
			viewHolder.imageView = (ImageView) convertView
					.findViewById(R.id.base_item_image);

			map.put(position, convertView);
			convertView.setTag(viewHolder);
			convertView.setId(position + 21);
		} else
		{
			viewHolder = (ViewHolder) convertView.getTag();
		}
		viewHolder.imageView.setImageResource(a);
		viewHolder.textView.setText(list.get(position));

		return convertView;
	}

	public class ViewHolder
	{
		TextView textView;
		ImageView imageView;

	}

}