protected override void OnCreate(Bundle bundle)
{
base.OnCreate(bundle);
SetContentView(Resource.Layout.NewMessage);
preferences = PreferenceManager.GetDefaultSharedPreferences(ApplicationContext);
token = JsonConvert.DeserializeObject<AuthenticationToken>(preferences.GetString("token", null));
mTimeTextView = FindViewById<TextView>(Resource.Id.timeTextView);
mStartPlaceEditText = FindViewById<EditText>(Resource.Id.startPlaceEditText);
mEndPlaceEditText = FindViewById<EditText>(Resource.Id.endPlaceEditText);
mAddButton = FindViewById<Button>(Resource.Id.addButton);
mTime = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, DateTime.Now.Hour, DateTime.Now.Minute, 0);
mTimeTextView.Text = $"Czas: {mTime.ToString("HH:mm")}";
mTimeTextView.Click += (object sender, EventArgs e) =>
{
var timePickerFragment = new TimePickerDialogFragment(this, mTime, this);
timePickerFragment.Show(FragmentManager, null);
};
mAddButton.Click += async (object sender, EventArgs e) =>
{ //sprawdzenie poprawnoœci wprowadzonych przez u¿ytkownika danych
if (!mStartPlaceEditText.Text.Equals("") && !mEndPlaceEditText.Text.Equals(""))
{
mStartPlace = mStartPlaceEditText.Text;
mEndPlace = mEndPlaceEditText.Text;
var traveler = JsonConvert.DeserializeObject<Traveler>(preferences.GetString("traveler", null));
if (traveler == null || token == null)
{
Toast.MakeText(this, GetString(Resource.String.LoginTokenOrTravelerFailure), ToastLength.Long).Show();
Finish();
StartActivity(typeof(LoginActivity));
}
else
{
//utworzenie nowego obiektu - wiadomoœci
newMessage = new Information
{
TravelerId = traveler.Id,
StartPlace = mStartPlace,
EndPlace = mEndPlace,
Time = mTime
};
//sprawdzenie, czy œrodowisko jest po³¹czone z sieci¹ Internet
var connectivityManager = (ConnectivityManager) GetSystemService(ConnectivityService);
var activeNetworkInfo = connectivityManager.ActiveNetworkInfo;
if (activeNetworkInfo == null || !activeNetworkInfo.IsConnected)
{
Toast.MakeText(this, GetString(Resource.String.NoConnectionInfo), ToastLength.Long).Show();
return;
}
//wywo³anie okna dialogowego progresu
var loadingMessage = ProgressDialog.Show(this, GetString(Resource.String.SendingMessageTitle),
GetString(Resource.String.SendingMessageContent), true, false);
//wywo³anie metody obs³uguj¹cej ¿¹danie http i oczekiwanie na wiadomoœæ
var apiMessage = await SaveMyMessage(newMessage);
loadingMessage.Dismiss();
if (apiMessage.IsSuccessStatusCode)
{
//ustawienie pozytywnego rezultatu operacji i zakoñczenie aktywnoœci
SetResult(Result.Ok);
}
Finish();
}
}
else Toast.MakeText(this, GetString(Resource.String.NewMessageNoDataInfo), ToastLength.Long).Show();
};
}
//asynchroniczna metoda typu TASK (odrêbny w¹tek) wysy³aj¹ca ¿¹danie POST dodania wiadomoœci
private async Task<HttpResponseMessage> SaveMyMessage(Information message)
{ //utworzenie adresu aplikacji web api
var url = GetString(Resource.String.ApiLink) + "/api/information/postinformation";
client = new HttpClient();
//dodanie tokena autoryzacji zalogowanego klienta
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue(token.TokenType, token.AccessToken);
//przetworzenie obiektu na dane komunikacyjne JSON
var json = JsonConvert.SerializeObject(message);
var content = new StringContent(json, Encoding.UTF8, "application/json");
//wys³anie ¿¹dania i oczekiwanie na odpowiedŸ web api
var response = await client.PostAsync(new Uri(url), content);
return response;
}
