Exemple d'AsyncTask sous Android

Bonjour
Voici un exemple d'AsyncTask sous Android:

class LoginTask extends AsyncTask<LoginData,Void,String>
{
private Exception error;
protected String doInBackground(LoginData … data) {
try {
return login(data[0].getUserName(),data[0].getPassword());
} catch (Exception ex) {
Log.w("LOGINTASK","Failed to login",ex);
this.error = ex;
return null;
}
}

public void onPostExecute(String token) {
if (this.error == null) {
// authentication success !
} else {
// authentication failed ! (error in this.error)
}
}
}

III-C. Les thr