async void OnTripClicked(object sender, EventArgs e)
{
var tripsPage = new TripsPage();
// Disable back button on next page
NavigationPage.SetHasBackButton(tripsPage, false);
await Navigation.PushAsync(tripsPage);
}
// When user wants to save a trip
async void OnSaveButtonClicked(object sender, EventArgs e)
{
// Remove any attractions user chose to remove before navigating to next page
RemoveAttractions();
// Data for current trip
DataDisplay data = displayedData;
// Add data for trip to object that stores data for all trips
TripsPage.AllTripsDataDisplayed.Add(data);
var tripsPage = new TripsPage();
// Disable back button on next page
NavigationPage.SetHasBackButton(tripsPage, false);
await Navigation.PushAsync(tripsPage);
}