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();
        }

    }