使用自定义的BaseAdapter实现LIstView的展示

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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代码  
<?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代码  
<?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:

Java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

Java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

Java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：

Java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;  
    }  
      
      
      
}  

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