نمایش محتویات دیتابیس در لیست همراه با جستجو(شبیه عکس)

public class MainActivity extends ListActivity {
String[] str = {"علی", "مجید", "حامد"};
ArrayAdapter<String> adapter;

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

adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, str);
setListAdapter(adapter);

EditText ed = (EditText) findViewById(R.id.editText1);
ListView lv = (ListView) findViewById(android.R.id.list);

lv.setTextFilterEnabled(true);
ed.addTextChangedListener(new TextWatcher() {

@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3) {
// TODO Auto-generated method stub

}

@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub

}

@Override
public void afterTextChanged(Editable arg0) {
// vaghti kar bar harfi vared kard josteju mikone :
MainActivity.this.adapter.getFilter().filter(arg0);
            }
        });
    }

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
super.onListItemClick(l, v, position, id);

if (adapter.getItem(position).equals("حامد")) {
startActivity(new Intent(MainActivity.this, Hamed.class));
        } else if (adapter.getItem(position).equals("مجید")) {
startActivity(new Intent(MainActivity.this, Majid.class));
        }
    }
}