ListView实现的列表，如果是可编辑，可删除的，一般都要提供批量删除功能，否则的话，一项一项的删除体验很不好，也给用户带来了很大的麻烦。
实现效果图
具体实现代码
select.xml
主布局文件包含一个ListView还有一个隐藏的布局，包含了两个Button一个TextView,默认布局为gone，当监听到长按响应事件时候显示。
<?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="vertical" > <ListView android:id="@+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:cacheColorHint="#FFF" > </ListView> <RelativeLayout android:id="@+id/relative"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:gravity="bottom"
android:background="@color/lemonchiffon"
android:visibility="gone"
>
<Button android:id="@+id/cancle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="撤销 |"
android:textSize="20sp"
android:background="@null"
android:layout_centerVertical="true" />
<TextView android:id="@+id/txtcount"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="共计"
android:textSize="15sp"
android:layout_centerInParent="true" /> <Button android:id="@+id/delete"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="| 删除"
android:textSize="20sp"
android:background="@null"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
/> </RelativeLayout>
</LinearLayout>
item.xml
包含一个TextView 一个CheckBox
<?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" > <TextView
android:id="@+id/txtName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:layout_gravity="center_vertical"
android:layout_marginLeft="5dp"
android:layout_weight="1"
android:text="444444444444"
android:textSize="17sp"
android:textColor="#333" /> <CheckBox
android:id="@+id/check"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
android:clickable="false"
/>
</LinearLayout>
通过自定义Adapter绑定ListView数据源，实现长按监听，在长按监听时候，切记将监听事件返回ture。
/**
* @author ieasy360_1
* 自定义Adapter
*/
class Adapter extends BaseAdapter{
private Context context;
private LayoutInflater inflater=null;
private HashMap<Integer, View> mView ;
public HashMap<Integer, Integer> visiblecheck ;//用来记录是否显示checkBox
public HashMap<Integer, Boolean> ischeck;
private TextView txtcount;
public Adapter(Context context,TextView txtcount)
{
this.context = context;
this.txtcount = txtcount;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mView = new HashMap<Integer, View>();
visiblecheck = new HashMap<Integer, Integer>();
ischeck = new HashMap<Integer, Boolean>();
if(isMulChoice){
for(int i=0;i<array.size();i++){
ischeck.put(i, false);
visiblecheck.put(i, CheckBox.VISIBLE);
}
}else{
for(int i=0;i<array.size();i++)
{
ischeck.put(i, false);
visiblecheck.put(i, CheckBox.INVISIBLE);
}
}
} public int getCount() {
// TODO Auto-generated method stub
return array.size();
} public Object getItem(int position) {
// TODO Auto-generated method stub
return array.get(position);
} public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
} public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View view = mView.get(position);
if(view==null)
{
view = inflater.inflate(R.layout.item, null);
TextView txt = (TextView)view.findViewById(R.id.txtName);
final CheckBox ceb = (CheckBox)view.findViewById(R.id.check); txt.setText(array.get(position)); ceb.setChecked(ischeck.get(position));
ceb.setVisibility(visiblecheck.get(position)); view.setOnLongClickListener(new Onlongclick()); view.setOnClickListener(new OnClickListener() { public void onClick(View v) {
// TODO Auto-generated method stub
if(isMulChoice){
if(ceb.isChecked()){
ceb.setChecked(false);
selectid.remove(array.get(position));
}else{
ceb.setChecked(true);
selectid.add(array.get(position));
}
txtcount.setText("共选择了"+selectid.size()+"项");
}else {
Toast.makeText(context, "点击了"+array.get(position), Toast.LENGTH_LONG).show();
}
}
}); mView.put(position, view);
}
return view;
} class Onlongclick implements OnLongClickListener{ public boolean onLongClick(View v) {
// TODO Auto-generated method stub isMulChoice = true;
selectid.clear();
layout.setVisibility(View.VISIBLE);
for(int i=0;i<array.size();i++)
{
adapter.visiblecheck.put(i, CheckBox.VISIBLE);
}
adapter = new Adapter(context,txtcount);
listview.setAdapter(adapter);
return true;
}
}
}
全部实现代码
package com.example.test;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnLongClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast; /**
* @author ieasy360_1
*
*/
public class MulSelect extends Activity implements OnClickListener { private ListView listview;
private Context context;
private List<String> array = new ArrayList<String>();
private List<String> selectid = new ArrayList<String>();
private boolean isMulChoice = false; //是否多选
private Adapter adapter;
private RelativeLayout layout;
private Button cancle,delete;
private TextView txtcount; @Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.select);
context = this;
listview = (ListView)findViewById(R.id.list);
layout = (RelativeLayout)findViewById(R.id.relative);
txtcount = (TextView)findViewById(R.id.txtcount);
cancle = (Button)findViewById(R.id.cancle);
delete = (Button)findViewById(R.id.delete);
cancle.setOnClickListener(this);
delete.setOnClickListener(this);
init();
adapter = new Adapter(context,txtcount);
listview.setAdapter(adapter); } void init()
{
for(int i=0;i<20;i++)
{
array.add("小明"+i);
}
} public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.cancle:
isMulChoice = false;
selectid.clear();
adapter = new Adapter(context,txtcount);
listview.setAdapter(adapter);
layout.setVisibility(View.INVISIBLE);
break;
case R.id.delete:
isMulChoice =false;
for(int i=0;i<selectid.size();i++){
for(int j=0;j<array.size();j++){
if(selectid.get(i).equals(array.get(j))){
array.remove(j);
}
}
}
selectid.clear();
adapter = new Adapter(context,txtcount);
listview.setAdapter(adapter);
layout.setVisibility(View.INVISIBLE);
break;
default:
break;
} } @Override
public void onCreateContextMenu(ContextMenu menu, View v,
ContextMenuInfo menuInfo) {
// TODO Auto-generated method stub
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("操作");
} /**
* @author ieasy360_1
* 自定义Adapter
*/
class Adapter extends BaseAdapter{
private Context context;
private LayoutInflater inflater=null;
private HashMap<Integer, View> mView ;
public HashMap<Integer, Integer> visiblecheck ;//用来记录是否显示checkBox
public HashMap<Integer, Boolean> ischeck;
private TextView txtcount;
public Adapter(Context context,TextView txtcount)
{
this.context = context;
this.txtcount = txtcount;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mView = new HashMap<Integer, View>();
visiblecheck = new HashMap<Integer, Integer>();
ischeck = new HashMap<Integer, Boolean>();
if(isMulChoice){
for(int i=0;i<array.size();i++){
ischeck.put(i, false);
visiblecheck.put(i, CheckBox.VISIBLE);
}
}else{
for(int i=0;i<array.size();i++)
{
ischeck.put(i, false);
visiblecheck.put(i, CheckBox.INVISIBLE);
}
}
} public int getCount() {
// TODO Auto-generated method stub
return array.size();
} public Object getItem(int position) {
// TODO Auto-generated method stub
return array.get(position);
} public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
} public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View view = mView.get(position);
if(view==null)
{
view = inflater.inflate(R.layout.item, null);
TextView txt = (TextView)view.findViewById(R.id.txtName);
final CheckBox ceb = (CheckBox)view.findViewById(R.id.check); txt.setText(array.get(position)); ceb.setChecked(ischeck.get(position));
ceb.setVisibility(visiblecheck.get(position)); view.setOnLongClickListener(new Onlongclick()); view.setOnClickListener(new OnClickListener() { public void onClick(View v) {
// TODO Auto-generated method stub
if(isMulChoice){
if(ceb.isChecked()){
ceb.setChecked(false);
selectid.remove(array.get(position));
}else{
ceb.setChecked(true);
selectid.add(array.get(position));
}
txtcount.setText("共选择了"+selectid.size()+"项");
}else {
Toast.makeText(context, "点击了"+array.get(position), Toast.LENGTH_LONG).show();
}
}
}); mView.put(position, view);
}
return view;
} class Onlongclick implements OnLongClickListener{ public boolean onLongClick(View v) {
// TODO Auto-generated method stub isMulChoice = true;
selectid.clear();
layout.setVisibility(View.VISIBLE);
for(int i=0;i<array.size();i++)
{
adapter.visiblecheck.put(i, CheckBox.VISIBLE);
}
adapter = new Adapter(context,txtcount);
listview.setAdapter(adapter);
return true;
}
}
}
}