使用自定义的BaseAdapter实现LIstView的展示

http://stephen830.iteye.com/blog/1141394

使用自定义的BaseAdapter实现LIstView的展示

 

实现以下功能点：

 

1.通过自定义的BaseAdapter展示ListView；

2.动态修改、刷新ListView内容；

3.在自定义的BaseAdapter中实现ListView内容的点击和长按点击事件；

4.在BaseAdapter的getView方法中动态增加新组件；

 

 

 

效果图如下：

 

 

 

xml配置文件1（list_view01.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"
    >
    <LinearLayout
        android:orientation="horizontal"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        >
        <EditText
            android:id="@+id/editText01Edit"
            android:layout_width="110sp"
            android:layout_height="wrap_content"
            android:text=""
            />
        <Button
            android:id="@+id/button01Edit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="动态修改第1行第2列数据"
            android:onClick="editPersonAndRefreshListView01"
            />
    </LinearLayout>
    <ListView
        android:id="@+id/listView01"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        />
</LinearLayout>

 

 

xml配置文件2（list_view01_item.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"
    >
<TextView
    android:id="@+id/listView01Item01"
    android:layout_width="50sp"
    android:layout_height="wrap_content"
    />
<TextView
    android:id="@+id/listView01Item02"
    android:layout_width="90sp"
    android:layout_height="wrap_content"
    />
<TextView
    android:id="@+id/listView01Item03"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />
</LinearLayout>

 

Activity类代码:

package com.zhouzijing.android;

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

import com.zhouzijing.android.util.MenuEntity;

import android.app.Activity;
import android.os.Bundle;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnCreateContextMenuListener;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemLongClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class ListViewDemo extends Activity {

    //定义Person
    List<Person> persons ;
    ListAdapter adapter = null;
    ListView listView01 = null;
    EditText editTextPersonName = null;

    //定义上下文菜单
    final private static int CONTEXT_MENU_EDIT = 0;//菜单[编辑]的编号
    final private static int CONTEXT_MENU_SHARE = 1;//菜单[分享]的编号
    final private static int CONTEXT_MENU_DELETE = 2;//菜单[删除]的编号
    final private static int CONTEXT_MENU_CANCEL = 3;//菜单[取消]的编号
    private MenuEntity[] contextMenus = {
            new MenuEntity(0, CONTEXT_MENU_EDIT, 0, "编辑"),
            new MenuEntity(0, CONTEXT_MENU_SHARE, 1, "分享"),
            new MenuEntity(0, CONTEXT_MENU_DELETE, 2, "删除"),
            new MenuEntity(0, CONTEXT_MENU_CANCEL, 3, "取消"),
            };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.list_view01);
        //获取组件
        listView01 = (ListView)findViewById(R.id.listView01);
        editTextPersonName = (EditText)findViewById(R.id.editText01Edit);

        //显示ListView
        initListAllPersons();
        showByMyBaseAdapter();

        //初始化ListView的事件
        //initListView01Event();
    }

    public void initListAllPersons(){
        persons = new ArrayList<Person>();
        persons.add(new Person(100,"李小龙","香港",android.R.drawable.ic_delete));
        persons.add(new Person(101,"施瓦辛格","美国",android.R.drawable.ic_dialog_alert));
        persons.add(new Person(102,"戴安娜王妃","英国",android.R.drawable.ic_dialog_dialer));
        persons.add(new Person(103,"成龙","香港",android.R.drawable.ic_dialog_map));
        persons.add(new Person(104,"史泰龙","美国",android.R.drawable.ic_lock_idle_alarm));
        persons.add(new Person(105,"圣女贞德","法国",android.R.drawable.ic_media_next));
        persons.add(new Person(106,"列宁","苏联",android.R.drawable.ic_media_play));
        persons.add(new Person(107,"爱迪生","美国",android.R.drawable.ic_menu_add));
        persons.add(new Person(108,"孔子","中国",android.R.drawable.ic_media_rew));
        persons.add(new Person(109,"杨七郎","宋朝",android.R.drawable.ic_menu_zoom));
        persons.add(new Person(110,"秦始皇","秦国",android.R.drawable.ic_menu_agenda));
        persons.add(new Person(111,"岳飞","宋朝",android.R.drawable.ic_lock_lock));
    }

    public void showByMyBaseAdapter(){
        adapter = new MyBaseAdapter(this, persons);
        listView01.setAdapter(adapter);
    }

    /**
     * 按钮button01Edit的onClick事件.
     * @param view
     */
    public void editPersonAndRefreshListView01(View view){
        //获取TextEdit数据
        String value = editTextPersonName.getText().toString();
        //更新ListView的内容，并且动态刷新.
        persons.get(0).name=value;
        ((BaseAdapter) adapter).notifyDataSetChanged();
    }




    /**
     * 初始化listView01的事件.
     */
    public void initListView01Event(){

        //ListView的item点击事件
        listView01.setOnItemClickListener(new OnItemClickListener(){

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                Toast.makeText(getApplicationContext(),
                        "[OnItemClickListener]点击了："+persons.get(position).name,
                        Toast.LENGTH_SHORT).show();
            }
        });

        //ListView的item长按点击事件
        listView01.setOnItemLongClickListener(new OnItemLongClickListener(){

            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view,
                    int position, long id) {
                Toast.makeText(getApplicationContext(),
                        "[OnItemLongClickListener]点击了："+persons.get(position).name,
                        Toast.LENGTH_SHORT).show();
                return false;
            }

        });

        //ListView的键盘选中事件(直接触摸屏幕选中不会激发)
        listView01.setOnItemSelectedListener(new OnItemSelectedListener(){

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int position, long id) {
                Toast.makeText(getApplicationContext(),
                        "[OnItemSelectedListener:onItemSelected]点击了："
+persons.get(position).name,
                        Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                Toast.makeText(getApplicationContext(),
                        "[OnItemSelectedListener:onNothingSelected]点击了",
                        Toast.LENGTH_SHORT).show();
            }

        });

        //ListView组件:创建上下文菜单
        listView01.setOnCreateContextMenuListener(new OnCreateContextMenuListener(){
            @Override
            public void onCreateContextMenu(ContextMenu menu, View v,
                    ContextMenuInfo menuInfo) {
                //获取上下文菜单点击的ListView的位置(position)属性
                AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
                int position = info.position;

                //设置上下文菜单标题
                menu.setHeaderTitle(persons.get(position).name);

                //设置上下文菜单栏目
                MenuEntity menuEntity = null;
                for(int i=0;i<contextMenus.length;i++){
                    menuEntity = contextMenus[i];
                    menu.add(menuEntity.getGroupId(),menuEntity.getItemId()
,menuEntity.getOrder(),menuEntity.getTitle());
                }
            }
        });
    }

    //监听选择上下文菜单的选择事件
    @Override
    public boolean onContextItemSelected(MenuItem item) {
        //选中的上下文菜单的itemId
        int itemId = item.getItemId();
        //获取上下文菜单点击的ListView的位置(position)属性
        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
        int position = info.position;
        //Toast
        Toast.makeText(getApplicationContext(),
                "[onContextItemSelected]点击了"+persons.get(position).name+"" +
                        ",菜单="+contextMenus[itemId].getTitle(),
                Toast.LENGTH_SHORT).show();
        return true;
    }

}

 

Person类代码

package com.zhouzijing.android;

public class Person {

    public int id;
    public String name;
    public String address;
    public int photo;

    public Person(int id, String name, String address,int photo) {
        super();
        this.id = id;
        this.name = name;
        this.address = address;
        this.photo = photo;
    }
}

 

自定义的BaseAdapter类代码

package com.zhouzijing.android;

import java.util.List;

import android.content.Context;
import android.util.Log;
import android.view.Gravity;
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.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

public class MyBaseAdapter extends BaseAdapter {
    private List<Person> persons;
    Context context;

    public MyBaseAdapter(Context context,List<Person> persons){
        this.persons = persons;
        this.context = context;
    }

    @Override
    public int getCount() {
        return (persons==null)?0:persons.size();
    }

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

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


    public class ViewHolder{
        TextView textViewItem01;
        TextView textViewItem02;
        TextView textViewItem03;
        ImageView imageView;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        final Person person = (Person)getItem(position);
        ViewHolder viewHolder = null;
        if(convertView==null){
            Log.d("MyBaseAdapter", "新建convertView,position="+position);
            convertView = LayoutInflater.from(context).inflate(
                    R.layout.list_view01_item, null);

            viewHolder = new ViewHolder();
            viewHolder.textViewItem01 = (TextView)convertView.findViewById(
                    R.id.listView01Item01);
            viewHolder.textViewItem02 = (TextView)convertView.findViewById(
                    R.id.listView01Item02);
            viewHolder.textViewItem03 = (TextView)convertView.findViewById(
                    R.id.listView01Item03);

            //动态增加1个ImageView
            viewHolder.imageView = new ImageView(context);
            LinearLayout.LayoutParams mParams = new LinearLayout.LayoutParams(
                    LinearLayout.LayoutParams.WRAP_CONTENT,
                    LinearLayout.LayoutParams.WRAP_CONTENT);
            mParams.gravity = Gravity.CENTER;
            mParams.width=50;
            viewHolder.imageView.setLayoutParams(mParams);
            //这个ImageView放到ListView的第2列之后
            ((LinearLayout)convertView).addView(viewHolder.imageView,2);

            convertView.setTag(viewHolder);
        }else{
            viewHolder = (ViewHolder)convertView.getTag();
            Log.d("MyBaseAdapter", "旧的convertView,position="+position);
        }

        viewHolder.textViewItem01.setText(String.valueOf(person.id));
        viewHolder.textViewItem02.setText(person.name);
        viewHolder.textViewItem03.setText(person.address);
        viewHolder.imageView.setImageResource(person.photo);

        //对ListView中第1个TextView配置OnClick事件
        viewHolder.textViewItem01.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v) {
                Toast.makeText(context,
                        "[textViewItem01.setOnClickListener]点击了"+person.name,
                        Toast.LENGTH_SHORT).show();
            }
        });

        //对ListView中的每一行信息配置OnClick事件
        convertView.setOnClickListener(new OnClickListener(){

            @Override
            public void onClick(View v) {
                Toast.makeText(context,
                        "[convertView.setOnClickListener]点击了"+person.name,
                        Toast.LENGTH_SHORT).show();
            }

        });

        //对ListView中的每一行信息配置OnLongClick事件
        convertView.setOnLongClickListener(new OnLongClickListener(){
            @Override
            public boolean onLongClick(View v) {
                Toast.makeText(context,
                        "[convertView.setOnLongClickListener]点击了"+person.name,
                        Toast.LENGTH_SHORT).show();
                return true;
            }
        });

        return convertView;
    }

}

 

MenuEntity类代码：

 

package com.zhouzijing.android.util;


/**
 * 定义菜单实体结构.
 * @author stephen
 *
 */
public class MenuEntity{


    /**
     * 生成菜单.
     * @param groupId
     * @param itemId
     * @param order
     * @param title
     */
    public MenuEntity(int groupId, int itemId, int order, CharSequence title) {
        super();
        this.groupId = groupId;
        this.itemId = itemId;
        this.order = order;
        this.title = title;
    }

    /**
     * 组.
     */
    private int groupId;
    /**
     * 菜单编号.
     */
    private int itemId;
    /**
     * 显示顺序号.
     */
    private int order;
    /**
     * 菜单显示名称.
     */
    private CharSequence title;
    /**
     * @return the groupId
     */
    public int getGroupId() {
        return groupId;
    }
    /**
     * @param groupId the groupId to set
     */
    public void setGroupId(int groupId) {
        this.groupId = groupId;
    }
    /**
     * @return the itemId
     */
    public int getItemId() {
        return itemId;
    }
    /**
     * @param itemId the itemId to set
     */
    public void setItemId(int itemId) {
        this.itemId = itemId;
    }
    /**
     * @return the order
     */
    public int getOrder() {
        return order;
    }
    /**
     * @param order the order to set
     */
    public void setOrder(int order) {
        this.order = order;
    }
    /**
     * @return the title
     */
    public CharSequence getTitle() {
        return title;
    }
    /**
     * @param title the title to set
     */
    public void setTitle(CharSequence title) {
        this.title = title;
    }



}