[APP] ListView mit Update-Funktion

import java.util.ArrayList;
import java.util.HashMap;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class ListViewZweiSpaltigActivity extends ListActivity {
	
	private ArrayList<HashMap<String, String>> myListContent = 
			new ArrayList<HashMap<String, String>>();
	private SimpleAdapter adapter;
	private int i;
	
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        adapter = new SimpleAdapter(
        		this,
        		myListContent,
        		R.layout.list_item_zweispaltig,
        		new String[] {"Spalte_1", "Spalte_2"},
        		new int[] {R.id.text1, R.id.text2});
        
        setListAdapter(adapter);
        
        for(i = 0; i < 5; i++){
        	HashMap<String, String> item = new HashMap<String, String>();
        	item.put("Spalte_1", "Zeile Nr. " + String.valueOf(i));
        	item.put("Spalte_2", "Position Nr. : " + String.valueOf(i));
        	myListContent.add(item);
        }
        
        ListView lv = getListView();
        
        lv.setOnItemClickListener(new OnItemClickListener(){
        	public void onItemClick(AdapterView<?> parent, View view, int position, long id){
        		HashMap<String, String> item;
        		item = myListContent.get(position);
        		item.get("Spalte_1");
        		item.put("Spalte_1", "Position " + position + " gelöscht!");
        		myListContent.set(position, item);
        		adapter.notifyDataSetChanged();
        	}
        });
        	
        for(i *= 1; i < 21; i++){
			HashMap<String, String> item = new HashMap<String, String>();
			item.put("Spalte_1", "Zeile Nr. " + String.valueOf(i));
			item.put("Spalte_2", "Position Nr. " + String.valueOf(i));
			myListContent.add(item);
        }
    }
}