android ListView控件操作绑定数据、单击事件

1、主界面main.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="vertical">

   
     <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >
    
        <TextView
            android:layout_width="150dp"
            android:layout_height="wrap_content"
            android:text="姓名"
            />
        
          <TextView
            android:layout_width="150dp"
            android:layout_height="wrap_content"
            android:text="备注"   
            />
    </LinearLayout>  
    <ListView 
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/listView"
        />
             
</LinearLayout>

 

 2、ListView中项界面设计

 
  <? 
  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:layout_width 
  ="150dp" 
  
        android:layout_height 
  ="wrap_content" 
  
        android:id 
  ="@+id/testname" 
  
         
  /> 
  
     
  
       
  < 
  TextView
         
  android:layout_width 
  ="150dp" 
  
        android:layout_height 
  ="wrap_content" 
  
        android:id 
  ="@+id/testmemo" 
          
         
  /> 
  
</ 
  LinearLayout 
  >  
 

 

 3、使用SimpleCursorAdapter绑定数据

      /*

     * 使用SimpleCursorAdapter适配器绑定数据
     */
    private void bindData()
    {
        Cursor cursor=tService.findCursorSplitPage(0, 20,"");
        SimpleCursorAdapter adapter = new SimpleCursorAdapter(this,R.layout.item, cursor,
                new String[]{"name","memo"},new int[]{R.id.testname,R.id.testmemo});
        listView.setAdapter(adapter);
    }
    

 

 

4、使用SimpleAdapter绑定数据

        
  
     
  /* 
  
     * 使用SimpleAdapter适配器绑定数据
      
  */ 
  
     
  private  
  void bindData1() 
  
    { 
  
        List<testTable> list=tService.findSplitPage(0, 20, ""); 
  
        List<HashMap<String,Object>> data =  
  new ArrayList<HashMap<String,Object>>(); 
  
         
  for(testTable t: list) 
  
        { 
  
            HashMap<String,Object> h= 
  new HashMap<String, Object>(); 
  
            h.put("name", t.getName()); 
  
            h.put("memo", t.getMemo()); 
  
            h.put("id", t.getId()); 
  
            data.add(h); 
  
        } 
  
        SimpleAdapter adapter= 
  new SimpleAdapter( 
  this, data, R.layout.item,  
  
                 
  new String[]{"name","memo"}, 
  new  
  int[]{R.id.testname,R.id.testmemo}); 
  
        listView.setAdapter(adapter); 
  
    } 
 

    

5、使用自定义适配器绑定数据

    5.1、自定义适配器

 
  package 
   org.jgw.adapter; 
  
import java.util.List; 
  

import org.jgw.entity.testTable; 
  
import org.jgw.hello.R; 
  

import android.content.Context; 
  
import android.view.LayoutInflater; 
  
import android.view.View; 
  
import android.view.ViewGroup; 
  
import android.widget.BaseAdapter; 
  
import android.widget.TextView; 
  

public  
  class testTableAdapter  
  extends BaseAdapter { 
  

     
  private List<testTable> list; 
  
     
  private Context context; 
  
     
  private  
  int layout; 
  
     
  
     
  private LayoutInflater inflater; 
  
     
  
     
  public testTableAdapter(List<testTable> list, Context context, 
  int layout)  
  
    {         
  
         
  this.list = list; 
  
         
  this.context = context; 
  
         
  this.layout = layout; 
  
         
  
        inflater =(LayoutInflater)context.getSystemService(context.LAYOUT_INFLATER_SERVICE); 
  
    } 
  

     
  /* 
  
     * 获取总行数
     * @see android.widget.Adapter#getCount()
      
  */ 
  
     
  public  
  int getCount() { 
  
         
  return list.size(); 
  
    } 
  

     
  /* 
  
     * 根据索引获取数据
     * @see android.widget.Adapter#getItem(int)
      
  */ 
  
     
  public Object getItem( 
  int position) {         
  
         
  return list.get(position); 
  
    } 
  

     
  /* 
  
     * item的id，很少使用到
     * @see android.widget.Adapter#getItemId(int)
      
  */ 
  
     
  public  
  long getItemId( 
  int position) {         
  
         
  return position; 
  
    } 
  

     
  public View getView( 
  int position, View convertView, ViewGroup parent) { 
  
         
  
        ViewCache cache; 
  
         
  if(convertView== 
  null) 
  
        { 
  
            convertView = inflater.inflate(layout,  
  null); 
  
            cache= 
  new ViewCache(); 
  
            cache.testname=(TextView)convertView.findViewById(R.id.testname); 
  
            cache.testmemo=(TextView)convertView.findViewById(R.id.testmemo); 
  
            convertView.setTag(cache); 
  
             
  
        } 
  
         
  else 
  
        { 
  
            cache=(ViewCache)convertView.getTag();         
  
        } 
  
         
  
        testTable t=list.get(position); 
  
        cache.testname.setText(t.getName()); 
  
        cache.testmemo.setText(t.getMemo()); 
  
         
  
         
  
         
  return convertView; 
  
    } 
  
     
  
     
  public  
  final  
  class ViewCache 
  
    { 
  
         
  public TextView testname; 
  
         
  public TextView testmemo; 
  
    } 
  

} 
 

     5.2、应用自定义适配器绑定ListView 

     

      /*

     * 使用自定义适配器绑定数据

 
        
  */ 
  
     
  private  
  void bindData2() 
  
    { 
  
        List<testTable> list=tService.findSplitPage(0, 20, ""); 
  
        testTableAdapter adapter= 
  new testTableAdapter(list, getApplicationContext(), R.layout.item); 
  
        listView.setAdapter(adapter); 
  
    } 
  
     
  
     
 

 

 6、给ListView的item添加OnClick事件

 
    
  package 
   org.jgw.hello; 
  
import java.util.ArrayList; 
  
import java.util.HashMap; 
  
import java.util.List; 
  

import org.jgw.adapter.testTableAdapter; 
  
import org.jgw.entity.testTable; 
  
import org.jgw.service.testTableService; 
  

import android.app.Activity; 
  
import android.content.Intent; 
  
import android.database.Cursor; 
  
import android.net.Uri; 
  
import android.os.Bundle; 
  
import android.widget.AdapterView; 
  
import android.widget.Button; 
  
import android.widget.EditText; 
  
import android.widget.ListView; 
  
import android.widget.SimpleAdapter; 
  
import android.widget.SimpleCursorAdapter; 
  
import android.widget.Toast; 
  
import android.widget.AdapterView.OnItemClickListener; 
  
import android.telephony.SmsManager; 
  
import android.util.Log; 
  
import android.view.*; 
  

public  
  class HellowordActivity  
  extends Activity { 
  
     
  /** 
   Called when the activity is first created.  
  */ 
  
    ListView listView; 
  
    testTableService tService; 
  
     
  
    @Override 
  
     
  public  
  void onCreate(Bundle savedInstanceState) { 
  
         
  super.onCreate(savedInstanceState); 
  
        setContentView(R.layout.main); 
  
         
  
        tService= 
  new testTableService(getApplicationContext()); 
  
          
  
         
  
        listView=(ListView) 
  this.findViewById(R.id.listView); 
  
         
  // 
  bindData();
         
  // 
  bindData1(); 
  
        bindData2(); 
  
         
  
        listView.setOnItemClickListener( 
  new ItemClick()); 
  
         
  
         
  
    } 
  
     
  
     
  /* 
  
     * item上的OnClick事件
      
  */ 
  
     
  public  
  final  
  class ItemClick  
  implements OnItemClickListener { 
  

         
  public  
  void onItemClick(AdapterView<?> parent, View arg1,  
  int position,  
  long id) { 
  
             
  
             
  
            ListView lview=(ListView)parent; 
  
            testTable t=(testTable)lview.getItemAtPosition(position);             
  
            Toast.makeText(getApplicationContext(), t.getId()+"", 1).show(); 
  
        } 
  

    }