Android之BaseAdapter

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.test16.MainActivity" >

   <ListView 
       android:id="@+id/listView	"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content">
       
   </ListView>
	

</RelativeLayout>

package com.example.test16;

import java.util.zip.Inflater;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends ActionBarActivity {
	private ListView listView;
	
	private int[] imgResIds={
			R.drawable.a,
			R.drawable.b,
			R.drawable.c,
			R.drawable.d,
			R.drawable.e
	};
	
	private String[] names={
			"name1","name2","name3","name4","name5"
	};
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		listView=(ListView) findViewById(R.id.listView);
		listView.setAdapter(new MyAdapter());
	}

	class MyAdapter extends BaseAdapter{

		@Override
		public int getCount() {
			// TODO Auto-generated method stub
			return imgResIds.length;
		}

		@Override
		public Object getItem(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public long getItemId(int position) {
			// TODO Auto-generated method stub
			return position;
		}

		@Override
		public View getView(int position, View convertView, ViewGroup parent) {
			ViewHolder holder=null;
			View view;
			if(convertView==null){
				// 解析布局文件
				LayoutInflater inflater=LayoutInflater.from(MainActivity.this);
				view=inflater.inflate(R.layout.list_item, null);
				holder=new ViewHolder(view);
				view.setTag(holder);
			}else{
				view=convertView;
				holder=(ViewHolder) view.getTag();
			}
			
			ImageView image=(ImageView) view.findViewById(R.id.im_img);
			image.setImageResource(imgResIds[position]);
			TextView tvName=(TextView) view.findViewById(R.id.tv_name);
			tvName.setText(names[position]);
			return view;
		}
		
	}
	
	class ViewHolder{
		private View view;
		private ImageView image;
		private TextView tvName;
		public ViewHolder(View view) {
			this.view = view;
		}
		public ImageView getImage() {
			if(image==null){
				//查找
				image=(ImageView) findViewById(R.id.im_img);
			}
			return image;
		}
		public TextView getTvName() {
			if(tvName==null){
				//查找
				tvName=(TextView) findViewById(R.id.tv_name);
			}
			return tvName;
		}
	}
}

<?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" 
    android:gravity="center_vertical">
    
	<ImageView 
	    android:id="@+id/im_img"
	    android:layout_width="100dp"
	    android:layout_height="100dp"
	    android:src="@drawable/ic_launcher"/>

	<TextView
	    android:id="@+id/tv_name"
	    android:layout_width="wrap_content"
	    android:layout_height="wrap_content"
	    android:text="name"
	    android:textSize="20sp" 
	    />

</LinearLayout>