public FlashCardCarousel(List <Sign> listOfSigns)
{
InitializeComponent();
// Randomize the list of signs
Random rnd = new Random();
for (int i = 0; i < listOfSigns.Count; i++)
{
// Get random index for swapping with 'i'
int randomIndex = rnd.Next(0, listOfSigns.Count);
// Do the swap
Sign randomSign = listOfSigns[randomIndex];
listOfSigns[randomIndex] = listOfSigns[i];
listOfSigns[i] = randomSign;
}
// Create a flash card page for each sign and add it to the carousel
int numOfCards = listOfSigns.Count;
for (int i = 0; i < numOfCards; i++)
{
FlashCard flashCardPage = new FlashCard(listOfSigns[i], i + 1, numOfCards);
Children.Add(flashCardPage);
}
}
/// <summary>
/// This will pause the video of a card if the user navigates away from
/// the flash cards by selecting another tab while a video is playing.
/// </summary>
protected override void OnDisappearing()
{
base.OnDisappearing();
FlashCard currentPage = (FlashCard)CurrentPage;
// VideoPlayer was having a problem with this function if the back button
// had been pressed and we were popping the navigation stack. I believe
// The underlying problem is when the video player is trying to assign
// itself a new source. So skipping this function call when popping the
// navigation stack avoids the issue.
if (!backButtonPressed)
{
currentPage.HideVideoAfterSwipe();
}
}
