Android fetches data from the database and puts it in EditText in another Activity

The files MainActivity.java and XiuGaiActivity.java
MainActivity.java
lv.setAdapter (adapter);
lv.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Intent intent = new Intent(MainActivity.this, XiuGaiActivity.class);
intent.putExtra("id",id);
   startActivityForResult(intent, 20);

}
});








XiuGaiActivity.java


int id = (int)getIntent().getLongExtra("id", -1);

Book b = new BookDAO(this).find(id);
smet.setText(b.getName());
xset.setText(b.getExp());