ListView的Adapter使用(绑定数据)之自定义每一项的布局去绑定数据

/**  *  
 */ package com.cz.list.demo; 
 import java.util.ArrayList; 
import java.util.HashMap;  
import android.app.Activity; import android.os.Bundle; 
import android.widget.ListView; import android.widget.SimpleAdapter; 
 /** 
 * @author CZ  *  
 */ public class SimpleAdapterListDemo extends Activity { 
    private ListView listView;  
    /*      * (non-Javadoc) 
     *       * @see android.app.Activity#onCreate(android.os.Bundle) 
     */     @Override 
    protected void onCreate(Bundle savedInstanceState) {         // TODO Auto-generated method stub 
        super.onCreate(savedInstanceState);         setContentView(R.layout.array_list_layout); 
        listView = (ListView) findViewById(R.id.array_list);  
        SimpleAdapter simpleAdapter = new SimpleAdapter(                 SimpleAdapterListDemo.this, getHashMapData(), 
                android.R.layout.simple_list_item_2, new String[] { "id",                         "name" }, new int[] { android.R.id.text1, 
                        android.R.id.text2 });         listView.setAdapter(simpleAdapter); 
    }  
    /**      *  
     * @return Year:2011 Date:2011-10-23 Time:下午05:45:38 Author:CZ TODO      *         写一个方法去绑定十条数据 
     */     private ArrayList> getHashMapData() { 
        ArrayList> hashData = new ArrayList>();         for (int i = 0; i <10; i++) { 
            HashMap mItem = new HashMap();             mItem.put("id", "当前的id是" + i); 
            mItem.put("name", "名字是美女" + i);             hashData.add(mItem); 
        }         return hashData; 
     } 
}

android:layout_ android:layout_> android:layout_ android:scaleType="fitCenter" android:adjustViewBounds="true" android:layout_alignParentLeft="true"
android:layout_margin="5dip"> android:layout_ android:textSize="14dip" android:layout_toRightOf="@+id/imageView" android:layout_alignTop="@+id/imageView">
android:layout_toRightOf="@+id/imageView" android:layout_below="@+id/number">

/** *
*/ package com.cz.list.demo;
import java.util.ArrayList;
import java.util.HashMap;
import android.app.Activity; import android.content.Context;
import android.os.Bundle; import android.util.Log;
import android.view.LayoutInflater; import android.view.View;
import android.view.ViewGroup; import android.widget.ImageView;
import android.widget.ListView; import android.widget.SimpleAdapter;
import android.widget.TextView;
/** * @author CZ
* */
public class CustomSimpleAdapterDemo extends Activity { private ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub
super.onCreate(savedInstanceState); setContentView(R.layout.array_list_layout);
listView = (ListView) findViewById(R.id.array_list);
CustomSimpleAdapter customSimpleAdapter = new CustomSimpleAdapter( CustomSimpleAdapterDemo.this, getHashMapData(),
R.layout.custom_list_layout);
listView.setAdapter(customSimpleAdapter); }
/**
* * @author CZ
* 自定义的类去继承SimpleAdapter */
private class CustomSimpleAdapter extends SimpleAdapter { private Context context;
private ArrayList> data; private int layoutResource;
/**
* @param context * @param data
* @param resource * @param from
* @param to 构造函数 */
public CustomSimpleAdapter(Context context, ArrayList> data, int resource) {
super(context, data, resource, null, null); this.cOntext= context;
this.data = data; this.layoutResource = resource;
}
class ViewHolder { ImageView picture;
TextView number; TextView name;
}
/* * (non-Javadoc)
* * @see android.widget.SimpleAdapter#getView(int, android.view.View,
* android.view.ViewGroup) */
@Override public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater layoutInflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE); View layoutView = layoutInflater.inflate(layoutResource, null);
ViewHolder viewHolder = new ViewHolder(); viewHolder.picture = (ImageView) layoutView
.findViewById(R.id.imageView); viewHolder.number = (TextView) layoutView.findViewById(R.id.number);
viewHolder.name = (TextView) layoutView.findViewById(R.id.name);
viewHolder.picture.setImageResource(Integer.parseInt(data.get( position).get("imageView").toString()));
viewHolder.number.setText(data.get(position).get("id").toString()); Log.e("id", data.get(position).get("name").toString());
viewHolder.name.setText(data.get(position).get("name").toString()); return layoutView;
} }
/**
* * @return
* Year:2011 Date:2011-10-23 Time:下午05:46:45 * Author:CZ
* TODO 自定义的方法绑定数据，为了避免图片全部都一样，我们让三张图片循环绑定。 */
private ArrayList> getHashMapData() { ArrayList> hashData = new ArrayList>();
for (int i = 0; i <10; i++) { HashMap mItem = new HashMap();
mItem.put("id", "当前的编号是：" + i); mItem.put("name", "名字是美女" + i);
switch (i % 3) { case 0:
mItem.put("imageView", R.drawable.test1); break;
case 1: mItem.put("imageView", R.drawable.test2);
break; case 2:
mItem.put("imageView", R.drawable.test3); break;
default: mItem.put("imageView", R.drawable.test4);
break; }
hashData.add(mItem); }
return hashData;
}
}