open-maui/OpenMaui Samples
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todo app fixes

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This commit is contained in:
David H. Friedel Jr.
2026-01-17 15:06:30 +00:00
parent 26b39a403a
commit ca48355f8a
6 changed files with 97 additions and 33 deletions
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82
TodoApp/Pages/TodoListPage.xaml.cs
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@@ -9,6 +9,7 @@ namespace TodoApp;
public partial class TodoListPage : ContentPage
{
private readonly TodoService _service = TodoService.Instance;
private bool _isNavigating; // Guard against double navigation
public TodoListPage()
{
@@ -18,22 +19,33 @@ public partial class TodoListPage : ContentPage
TodoCollectionView.ItemsSource = _service.Todos;
UpdateStats();
// Subscribe to theme changes to verify event is firing
if (Application.Current != null)
{
Application.Current.RequestedThemeChanged += (s, e) =>
{
Console.WriteLine($"[TodoListPage] RequestedThemeChanged event received! NewTheme={e.RequestedTheme}");
};
}
Console.WriteLine("[TodoListPage] Constructor finished");
}
protected override void OnAppearing()
{
Console.WriteLine("[TodoListPage] OnAppearing called - refreshing CollectionView");
base.OnAppearing();
// Reset navigation guard when page reappears
_isNavigating = false;
// Refresh indexes for alternating row colors
_service.RefreshIndexes();
// Refresh the collection view
TodoCollectionView.ItemsSource = null;
TodoCollectionView.ItemsSource = _service.Todos;
Console.WriteLine($"[TodoListPage] ItemsSource set with {_service.Todos.Count} items");
UpdateStats();
UpdateThemeIcon();
}
private async void OnAddClicked(object sender, EventArgs e)
@@ -43,23 +55,18 @@ public partial class TodoListPage : ContentPage
private async void OnSelectionChanged(object? sender, SelectionChangedEventArgs e)
{
try
// Guard against double navigation
if (_isNavigating)
{
Console.WriteLine($"[TodoListPage] OnSelectionChanged: {e.CurrentSelection.Count} items selected");
if (e.CurrentSelection.FirstOrDefault() is TodoItem todo)
{
Console.WriteLine($"[TodoListPage] Navigating to TodoDetailPage for: {todo.Title}");
TodoCollectionView.SelectedItem = null; // Deselect
var detailPage = new TodoDetailPage(todo);
Console.WriteLine($"[TodoListPage] Created TodoDetailPage, pushing...");
await Navigation.PushAsync(detailPage);
Console.WriteLine($"[TodoListPage] Navigation complete");
}
return;
}
catch (Exception ex)
if (e.CurrentSelection.FirstOrDefault() is TodoItem todo)
{
Console.WriteLine($"[TodoListPage] EXCEPTION in OnSelectionChanged: {ex.GetType().Name}: {ex.Message}");
Console.WriteLine($"[TodoListPage] Stack trace: {ex.StackTrace}");
_isNavigating = true;
TodoCollectionView.SelectedItem = null; // Deselect immediately
await Navigation.PushAsync(new TodoDetailPage(todo));
// Note: _isNavigating is reset in OnAppearing when we return
}
}
@@ -70,13 +77,42 @@ public partial class TodoListPage : ContentPage
if (total == 0)
{
StatsLabel.Text = "";
StatsLabel.Text = "No tasks";
}
else
{
StatsLabel.Text = $"{completed} of {total} completed";
StatsLabel.Text = $"Tasks: {completed} of {total} completed";
}
}
private void UpdateThemeIcon()
{
// Check UserAppTheme first, fall back to RequestedTheme
var userTheme = Application.Current?.UserAppTheme ?? AppTheme.Unspecified;
var effectiveTheme = userTheme != AppTheme.Unspecified ? userTheme : Application.Current?.RequestedTheme ?? AppTheme.Light;
var isDarkMode = effectiveTheme == AppTheme.Dark;
// Show sun icon in dark mode (to switch to light), moon icon in light mode (to switch to dark)
ThemeToggleButton.Source = isDarkMode ? "light_mode_white.svg" : "dark_mode_white.svg";
Console.WriteLine($"[TodoListPage] UpdateThemeIcon: UserAppTheme={userTheme}, RequestedTheme={Application.Current?.RequestedTheme}, isDarkMode={isDarkMode}");
}
private void OnThemeToggleClicked(object? sender, EventArgs e)
{
if (Application.Current == null) return;
// Check current effective theme
var userTheme = Application.Current.UserAppTheme;
var effectiveTheme = userTheme != AppTheme.Unspecified ? userTheme : Application.Current.RequestedTheme;
var isDarkMode = effectiveTheme == AppTheme.Dark;
// Toggle to the opposite theme
var newTheme = isDarkMode ? AppTheme.Light : AppTheme.Dark;
Application.Current.UserAppTheme = newTheme;
Console.WriteLine($"[TodoListPage] Theme toggled from {effectiveTheme} to {newTheme}");
UpdateThemeIcon();
}
}
/// <summary>
@@ -111,7 +147,8 @@ public class AlternatingRowColorConverter : IValueConverter
public class CompletedToColorConverter : IValueConverter
{
// Light theme colors
private static readonly Color AccentColor = Color.FromArgb("#26A69A");
private static readonly Color AccentColorLight = Color.FromArgb("#26A69A");
private static readonly Color AccentColorDark = Color.FromArgb("#4DB6AC");
private static readonly Color CompletedColor = Color.FromArgb("#9E9E9E");
private static readonly Color TextPrimaryLight = Color.FromArgb("#212121");
private static readonly Color TextSecondaryLight = Color.FromArgb("#757575");
@@ -126,10 +163,12 @@ public class CompletedToColorConverter : IValueConverter
string param = parameter as string ?? "";
bool isDarkMode = Application.Current?.RequestedTheme == AppTheme.Dark;
// Indicator bar color
// Indicator bar color - theme-aware accent color
if (param == "indicator")
{
return isCompleted ? CompletedColor : AccentColor;
var color = isCompleted ? CompletedColor : (isDarkMode ? AccentColorDark : AccentColorLight);
Console.WriteLine($"[CompletedToColorConverter] indicator: isCompleted={isCompleted}, isDarkMode={isDarkMode}, color={color}");
return color;
}
// Text colors with theme support
@@ -186,3 +225,4 @@ public class CompletedToOpacityConverter : IValueConverter
throw new NotImplementedException();
}
}