public void ShowStep(int?stepId)
{
if (stepId == null)
{
//display alert dialog
return;
}
//if the answer's next screen Id is not null, find it's definition and load the fragment
try
{
var ticketStepDefinition = TicketQuestionList.Find(q => q.ScreenId == stepId);
if (ticketStepDefinition != null)
{
//_ticketFragment = new FragmentTicket(ticketStepDefinition);
_ticketFragment = new FragmentTicket();
_ticketFragment.SetArgument(TicketFragment, ticketStepDefinition);
ShowFragment(_ticketFragment);
}
else
{
//display alertdialog stating step definition could not be found
}
}
catch (Exception ex)
{
Logger.Verbose(ex.Message);
return;
}
}
private void ShowFragment(FragmentTicket newfragment)
{
try
{
GetFragmentManager().BeginTransaction().Replace(Resource.Id.ticket_placeholder, newfragment, TicketFragmentTag).Show(newfragment).CommitAllowingStateLoss();
}
catch (Exception ex)
{
Logger.Verbose(ex.Message);
return;
}
}
public override void UpdateScreen()
{
try
{
if (TicketQuestionListDefintion == null)
{
using (var sr = new StreamReader(Assets.Open("ticketscreens.json")))
{
//load the screen definitions from the json file located in the Assets folder
TicketQuestionListDefintion = sr.ReadToEnd();
}
}
if (TicketQuestionListDefintion != null)
{
//deserialize the json structure
TicketQuestionList = JsonConvert.DeserializeObject <List <TicketQuestion> >(TicketQuestionListDefintion);
Logger.Verbose("Deserialized Screen List Count : " + TicketQuestionList.Count());
//if we have list of questions
if (TicketQuestionList.Any())
{
TicketQuestion startTicketQuestion = null;
if (StepAnswersListDefintion != null)
{
StepAnswersList = JsonConvert.DeserializeObject <List <StepAnswer> >(StepAnswersListDefintion);
}
//determine the starting screen based on whether we have an existing list of step answers
if (StepAnswersList == null)
{
//startTicketQuestion = TicketQuestionList.ElementAt(0);
startTicketQuestion = TicketQuestionList.Find(q => q.ScreenId == _startScreenId);
}
else
{
//if there is persisted list, get the last one and use that as the starting point
if (StepAnswersList.Any())
{
var lastStepAnswer = StepAnswersList.ElementAt(StepAnswersList.Count() - 1);
Logger.Verbose("Last Step to be reloaded : " + lastStepAnswer.StepId);
startTicketQuestion = TicketQuestionList.Find(q => q.ScreenId == lastStepAnswer.StepId);
}
else
{
//startTicketQuestion = TicketQuestionList.ElementAt(0);
startTicketQuestion = TicketQuestionList.Find(q => q.ScreenId == _startScreenId);
}
}
if (startTicketQuestion != null)
{
if (StepAnswersList == null)
{
StepAnswersList = new List <StepAnswer>();
}
_ticketFragment = new FragmentTicket();
_ticketFragment.SetArgument(TicketFragment, startTicketQuestion);
ShowFragment(_ticketFragment);
}
}
}
}
catch (Exception ex)
{
Logger.Verbose(ex.Message);
return;
}
}