/// <summary>
/// Display results for selected food item.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnDetails_Clicked(System.Object sender, System.EventArgs e)
{
//Validate user has selected a picker option.
if (PckFood.SelectedIndex > -1)
{
//Adds a new instance of a food item.
FoodItems selectedFood = new FoodItems();
//Looks at each individual item within the foodList.
foreach (FoodItems food in foodList)
{
//Check if the food item equals the selected item from the picker.
if (food.FoodName == PckFood.SelectedItem.ToString())
{
//The new instance of the food (selectedFood) equals the one found in the list.
selectedFood = food;
}
}
//Show users results for selected food item with items calegory, measurement, and calories information in a display alert.
DisplayAlert(selectedFood.FoodName, $"Category: {selectedFood.Category}\n\n" +
$"Measurement: {selectedFood.Measurement}\n\n" +
$"Calories: {selectedFood.Calories.ToString("n0")}", "Close");
}
else
{
//User hasn't selected an item, show alert to telling them to select one.
DisplayAlert("Invalid Input", "Please select a food item first.", "Close");
}
}
/// <summary>
/// Processes the data file and add food items to picker.
/// </summary>
private void LoadFoodFile()
{
//Allows access to the saved imbedded text file in the solution explorer assembly.
var assembly = IntrospectionExtensions.GetTypeInfo(typeof(FoodDetailsPage)).Assembly;
//Use stream to open up and find text file within the solution explorer.
Stream stream = assembly.GetManifestResourceStream("MMFitnessApp.food.txt");
//String array to store each of the food items from the text file.
string[] foodItem;
//List of string to hold food names to populate picker.
List <string> foodNames = new List <string>();
//Process the food text file. Allows to read each line in the text file.
using (var reader = new StreamReader(stream))
{
//Skips the headers in the food text file.
reader.ReadLine();
//To loop through each line and store it in the string array. Read until not at the end of the stream.
while (!reader.EndOfStream)
{
//Read file line for line. Array after each tab.
foodItem = reader.ReadLine().Split('\t');
//Create a new food with each loop.
FoodItems food = new FoodItems(foodItem);
//Adding a food name from the foodItems.
foodNames.Add(food.FoodName);
//Provides a food for the list.
foodList.Add(food);
}
;
}
//Adds the names to the picker
PckFood.ItemsSource = foodNames;
}
