/*When the main page loads, it calls the GetJsonData() method which is defined.
* This method uses the HttpClient.getAsync method to the web API specified in the
* URL link to send a GET request. In response, the web API sends a HttpResponseMessage
* object. This response contains content which is then de-serialized into a list to get the actual
* question and options set which is used to load into the Page1.xaml
*/
public async void GetJsonData()
{
// If device is connected to the Internet
if (NetworkCheck.IsInternet())
{
try
{
HttpClient client = new System.Net.Http.HttpClient();
HttpResponseMessage response = await client.GetAsync(jsonURI);
// If HTTP response is succesful, seraialize the HTTP content to the the string - JsonString
if (response.IsSuccessStatusCode)
{
string JsonString = await response.Content.ReadAsStringAsync();
//Converting JSON array objects into generic list
quizQuestionList = JsonConvert.DeserializeObject <QuizQuestionList>(JsonString);
}
}
catch (Exception ex)
{
Debug.WriteLine("\tERROR {0}", ex.Message);
}
}
else
{
//Device is not connected to the internet.
await DisplayAlert("JSONParsing", "No Network is available.", "Ok");
}
QuizPageViewModel.PopulateQuestionSet(quizQuestionList);
}
public Page1()
{
InitializeComponent();
quizPageViewModel = new QuizPageViewModel();
BindingContext = quizPageViewModel;
}
