public async Task DownloadLesson(List <Lesson> ListLesson, string idLesson)
{
string nameLesson = null; //lưu tên Lesson để thông báo
// Download Lesson
foreach (var myLesson in ListLesson)
{
if (myLesson.Id.Equals(idLesson))
{
nameLesson = myLesson.Name.Trim();
lessonDb = new LessonDatabaseAccess();
lessonDb.AddLesson(myLesson);
break;
}
}
RestQuestionService resQuestionService = new RestQuestionService();
List <Question> myLstQuestion = await resQuestionService.GetDataWithIDAsync(idLesson); // Lấy các câu hỏi có trong Lesson
questionDb = new QuestionDatabaseAccess();
answerDb = new AnswerDatabaseAccess();
foreach (var myQuestion in myLstQuestion)
{
questionDb.AddQuestion(myQuestion); // Download Question
RestAnswerService resAnswerService = new RestAnswerService();
List <Answer> myLstAnswer = await resAnswerService.GetDataWithIDAsync(myQuestion.QuestionID); // Lấy các câu trả lời có trong cầu hỏi
foreach (var myAnswer in myLstAnswer)
{
answerDb.AddAnswer(myAnswer); //Download Answer
}
}
DependencyService.Get <IMessage>().LongToast("Download " + nameLesson + " Completed");
}
//public List<Question> ListQuestion
//{
// get
// {
// return _listQuestion;
// }
// set
// {
// _listQuestion = value;
// OnPropertyChanged();
// }
//}
//public List<Answer> ListAnswer
//{
// get
// {
// return _listAnswer;
// }
// set
// {
// _listAnswer = value;
// OnPropertyChanged();
// }
//}
#endregion
#region Methods
private async Task GetDataQuestion(string idLesson)
{
//ListQuestion = new List<Question>();
lstQuestion = new List <Question>();
resQuestionService = new RestQuestionService();
Task <List <Question> > ahihi = resQuestionService.GetDataWithIDAsync(idLesson);
//Task.WhenAll(ahihi);
//ListQuestion = await ahihi;
lstQuestion = await ahihi;
// lstQuestion = ahihi.Result;
} // Không dùng
} // Không dùng
public async void GetData(StackLayout myLayout, string idLesson)
{
// Offline = true;
// Lấy danh sách các câu hỏi.
if (myOffline) // Đang Offline
{
//questionDb = new QuestionDatabaseAccess();
//lstQuestion = questionDb.GetQuestionDb(idLesson);
lstQuestion = GetDataOffline.getQuetsionOffline(idLesson);
}
else // Đang Online
{
resQuestionService = new RestQuestionService();
Task <List <Question> > questionAsync = resQuestionService.GetDataWithIDAsync(idLesson);
lstQuestion = await questionAsync;
}
foreach (var question in lstQuestion)
{
var myLableQuestion = new Label
{
Text = "" + question.Content,
FontAttributes = FontAttributes.Bold
};
myLayout.Children.Add(myLableQuestion);
// Lay cac cau tra loi trong cau hoi
if (myOffline)
{
//answerDb = new AnswerDatabaseAccess();
//lstAnswer = answerDb.GetAnswerDb(question.QuestionID);
lstAnswer = GetDataOffline.getAnswerOffline(question.QuestionID);
}
else
{
resAnswerService = new RestAnswerService();
Task <List <Answer> > answerAsync = resAnswerService.GetDataWithIDAsync(question.QuestionID);
lstAnswer = new List <Answer>();
lstAnswer = await answerAsync;
}
if (question.TypeQuestion == 1 || question.TypeQuestion == 3) // Trac Nghiem
{
foreach (var answer in lstAnswer)
{
lstAnswerLesson.Add(answer);
Xamarin.Forms.Button myAnswer = new Xamarin.Forms.Button
{
Text = "" + answer.Content,
Margin = 10
,
// Command = CheckAnswerCommand(answer.AnswerID)
Command = CheckAnswerCommand(answer)
};
dicButton.Add(answer.AnswerID, myAnswer); // Danh sách lưu các button trắc nghiệm
myLayout.Children.Add(myAnswer);
}
}
else // Tu luan
{
foreach (var answer in lstAnswer)
{
lstAnswerLesson.Add(answer);
var myEntryAnswer = new Entry
{
Placeholder = "" + answer.Content
};
//dicTuLuan.Add(ans[k].IDAnswer, myEntryAnswer);
dicTuLuan.Add(answer.AnswerID, myEntryAnswer);
myLayout.Children.Add(myEntryAnswer);
}
}
}
Xamarin.Forms.Button myFinishButton = new Xamarin.Forms.Button
{
Text = "Finish"
,
Command = FinishCommand()
};
myLayout.Children.Add(myFinishButton);
}