实现下图，图片来自SD卡、数据库、网络图片

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定义一个ListView的xml（res/layout/list_view.xml）

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<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
  	  android:id="@+id/h_list_view"
	  android:layout_width="fill_parent"
	  android:layout_height="fill_parent"
	/>

Activity代码

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public class MessageListActivity extends Activity {
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.home);

		setViews();
	}
	private void setViews() {		
		ListView lv = (ListView)findViewById(R.id.h_list_view);
		SimpleAdapter adapter = new ImageSimpleAdapter(this, getDatas() ,R.layout.message_list
				, new String[]{"icon","title","shortContent"}, new int[]{R.id.ml_icon,R.id.ml_title,R.id.ml_short_content});
		lv.setAdapter(adapter);
		lv.setOnItemClickListener(new OnItemClickListener(){
			@Override
			public void onItemClick(AdapterView<?> av, View v, int position, long id) {
				//处理列表项的点击事件
			}
		});
	}
	private List<Map<String,Object>> getDatas() {
		List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();
		for (int i=1; i<=12; i++) {
			Map<String,Object> map = new HashMap<String,Object>();
			String imagePath = "/sdcard/image_0"+i+".jpg";
			if (i >= 10) imagePath = "/sdcard/image_"+i+".jpg";
			map.put("icon", BitmapFactory.decodeFile(imagePath));
			map.put("title", "My Title "+i);
			map.put("shortContent", "my short content "+i);
			list.add(map);
		}
		return list;
	}
}

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SimpleAdapter中能放置drawable中的图片，如果想放置其它来源的图片（如：SD卡、数据库、网络图片），那么需要重写它的bindView方法，这是个private方法，因此还需要重写所以调用它的方法。

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package com.example.adapter;

import java.util.List;
import java.util.Map;

import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Checkable;
import android.widget.ImageView;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class ImageSimpleAdapter extends SimpleAdapter {
	private int[] mTo;
    private String[] mFrom;
    private ViewBinder mViewBinder;
    private List<? extends Map<String, ?>> mData;
    private int mResource;
    private int mDropDownResource;
    private LayoutInflater mInflater;
	public ImageSimpleAdapter(Context context, List<? extends Map<String, ?>> data, int resource, String[] from, int[] to) {
		super(context, data, resource, from, to);
		mTo = to;
		mFrom = from;
		mData = data;
		mResource = mDropDownResource = resource;
		mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
	}
	public View getView(int position, View convertView, ViewGroup parent) {
        return createViewFromResource(position, convertView, parent, mResource);
    }
    @Override
    public View getDropDownView(int position, View convertView, ViewGroup parent) {
        return createViewFromResource(position, convertView, parent, mDropDownResource);
    }
	private View createViewFromResource(int position, View convertView,
            ViewGroup parent, int resource) {
        View v;
        if (convertView == null) {
            v = mInflater.inflate(resource, parent, false);
        } else {
            v = convertView;
        }

        bindView(position, v);

        return v;
    }
	private void bindView(int position, View view) {
		final Map dataSet = mData.get(position);
        if (dataSet == null) {
            return;
        }

        final ViewBinder binder = mViewBinder;
        final String[] from = mFrom;
        final int[] to = mTo;
        final int count = to.length