How to add Content Provider manner in SimpleAdapter query multimedia files? ?

listview Content Provider

How about in
package com.widget.demo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.app.ListActivity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class CompactListDemo extends ListActivity {

@ Override
public void onCreate (Bundle savedInstanceState) {

super.onCreate (savedInstanceState);

SimpleAdapter adapter = new SimpleAdapter (this,
getData (), / / ​​put the data
ListViewR.layout.listitem, / / ​​put the data layout
new String [] {"title", "info", "img"} key
, / / ​​Map collectionnew int [] {R.id.title, R.id.info, R.id.img}) ;/ / with the first four parameters correspond
setListAdapter (adapter);
}

private List