Android : add image to list view

i want to add image to my list view and this is my list view activity code:

package com.example.dssdfsd; 
import android.widget.ListView;

public class MainActivity extends Activity {

private ListView lv;
ArrayAdapter<String> adapter;

EditText inputSearch;

ArrayList<HashMap<String, String>> productList;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    String products[] = {"Dell Inspiron"};

    lv = (ListView) findViewById(R.id.list_view);
    inputSearch = (EditText) findViewById(R.id.inputSearch);

    adapter = new ArrayAdapter<String>(this, R.layout.list_item,            R.id.product_name,       products);
    lv.setAdapter(adapter);

    inputSearch.addTextChangedListener(new TextWatcher() {

        @Override
        public void onTextChanged(CharSequence cs, int arg1, int arg2, int arg3) {
            MainActivity.this.adapter.getFilter().filter(cs);  
        }

        @Override
        public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,
                int arg3) {
        }

        @Override
        public void afterTextChanged(Editable arg0) {                       
        }
    });
}   
}

i want to add image to my list view. how can i do it? can any one help me to add image on my list view?