利用ListView批量删除item

本次代码是利用ListView+CheckBox批量删除item

利用CheckBox选中一个或多个item，最后一起删除它们...... OK

下面是程序运行效果图：

程序刚打开时是左图的效果 打开菜单点击“批量删除”，CheckBox出现出现的是右图效果,然后你可以点选要删除的项,最后单击菜单“确定删除” 就删除你所选中的所有item

下面开始上码：

package com.test.adapter;

import java.util.ArrayList;
import java.util.Iterator;

import android.app.ListActivity;
import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class ArrayAdapterActivity extends ListActivity {
    /** Called when the activity is first created. */
	
	private ArrayList<String> strList = new ArrayList<String>();
	private ArrayList<Integer> idList = new ArrayList<Integer>();
	private ListVIewAdapter ladapter;
	boolean visflag = false;
	ListView lv;
	static String str[] ={"苹果","香蕉","桔子","猕猴桃","李子","甘蔗","荔枝","桃子","香瓜","葡萄","哈密瓜","桂圆","龙眼"};
	CheckBox cb;
	{
		for(int i=0;i<str.length;i++)
		{
			strList.add(i,str[i]);
		}
	}

	
	@Override
	protected void onCreate(Bundle savedInstanceState)
	{
		
		super.onCreate(savedInstanceState);
	        
	        ladapter = new ListVIewAdapter(this);
		
		lv = this.getListView();
		lv.setAdapter(ladapter);
		lv.setScrollBarStyle(1);

		lv.setOnItemClickListener(new OnItemClickListener()
		{

			@Override
			public void onItemClick(AdapterView<?> parent,
					View view, int position, long id)
			{
					         
				Toast.makeText(ArrayAdapterActivity.this, "位置："+position, Toast.LENGTH_SHORT).show();
				
			}
		});
		
	}
	
	class ListVIewAdapter extends BaseAdapter
	{
		
		Context c;
		LayoutInflater mInflater ;
		ListVIewAdapter(Context context)
		{
			c = context;
			mInflater = getLayoutInflater();
		}
		@Override
		public int getCount()
		{
			return strList.size();
		}

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

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

		@Override
		public View getView(int position, View convertView,
				ViewGroup parent)
		{
			ViewHolder holder = new ViewHolder();
			final int pos = position;
			if(convertView==null)
			{
				System.out.println("convertView==null");
				convertView  = mInflater.inflate(R.layout.list_item, null);
			}
			holder.tv = (TextView)convertView.findViewById(R.id.textView);
			holder.cb = (CheckBox)convertView.findViewById(R.id.checkBox);
			holder.tv.setText(strList.get(position));
			holder.cb.setChecked(false);
			System.out.println("setText："+position);

			holder.cb.setOnCheckedChangeListener(new OnCheckedChangeListener()
			{
				
				@Override
				public void onCheckedChanged(CompoundButton buttonView,
						boolean isChecked)
				{
					if(isChecked&&(!idList.contains(pos)))
					{
						idList.add(pos);
					}
					else
					{
						if(idList.contains(pos))
						{
							idList.remove(Integer.valueOf(pos));
						}
					}
						
					System.out.println(idList.toString());
					Toast.makeText(ArrayAdapterActivity.this, "id："+pos, Toast.LENGTH_SHORT).show();
				}
			});
			
			if(visflag)
			{
				holder.cb.setVisibility(View.VISIBLE);
			}
			else
			{
				holder.cb.setVisibility(View.INVISIBLE);
			}
		
			return convertView;
		}
		class ViewHolder
		{
			TextView tv;
			CheckBox cb;
		}
		
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu)
	{
		
		menu.add(0, 0, 0, "批量处理");
		menu.add(0, 1, 0, "确定删除");
		return super.onCreateOptionsMenu(menu);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item)
	{
		switch(item.getItemId())
		{
			case 0:  // 批量处理
				{
					if(visflag==true)
					{
						visflag = false;
						idList.clear();
					}
					else
					{
						visflag = true;
					}
					this.ladapter.notifyDataSetInvalidated();
					break;
				}
			case 1: //确定删除
				{
					if(idList.size()>0)
					{
						for(Integer in:idList)
						{
							System.out.println("下面确定删除 in·····"+in);
							strList.set(in, "-1");
						}
						Iterator it = strList.iterator();
						while(it.hasNext())
						{
							String ss = (String)it.next();
							if(ss.trim().equals("-1"))
							{
								it.remove();
							}
						}
						
						idList.clear();
						this.ladapter.notifyDataSetChanged();
					}					
					break;
				}
		}
		return super.onOptionsItemSelected(item);
	}
	
	
}

还有list_item.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="fill_parent"
    >
    <RelativeLayout 
    	android:layout_width="fill_parent" 
	    android:layout_height="wrap_content">
		<TextView  
		    android:id="@+id/textView"
		    android:layout_width="wrap_content" 
		    android:layout_height="wrap_content"
		    android:text="@string/hello"
		    android:layout_alignParentLeft="true"
		    android:layout_centerVertical="true"
		    
		    />
		<CheckBox 
		    android:id="@+id/checkBox"
			android:layout_width="wrap_content" 
		    android:layout_height="wrap_content"
		    android:layout_alignParentRight="true"
		    android:visibility="gone"
		    android:focusable="false"
		   />
	</RelativeLayout>
</LinearLayout>

原创代码,仅供参考.....有什么意见请多指教！