flower-story/App/MainPage.xaml.cs

using Blahblah.FlowerStory.Data;
using Microsoft.Extensions.Logging;

namespace Blahblah.FlowerStory
{
    public partial class MainPage : ContentPage
    {
        int count = 0;
        readonly FlowerDatabase database;

        private readonly ILogger logger;
        public MainPage(FlowerDatabase database, ILogger<MainPage> logger)
        {
            this.logger = logger;

            this.database = database;
            InitializeComponent();
        }

        private void OnCounterClicked(object sender, EventArgs e)
        {
            count++;

            if (count == 1)
                CounterBtn.Text = $"Clicked {count} time";
            else
                CounterBtn.Text = $"Clicked {count} times";

            SemanticScreenReader.Announce(CounterBtn.Text);
        }

        protected override void OnAppearing()
        {
            base.OnAppearing();

            Task.Run(async () =>
            {
                try
                {
                    var list = await database.GetFlowers();
                    logger.LogInformation("got {count} flowers.", list.Count);
                }
                catch (Exception ex)
                {
                    logger.LogError("error occurs, {exception}", ex);
                }
            });
        }

        private void canvasView_PaintSurface(object sender, SkiaSharp.Views.Maui.SKPaintSurfaceEventArgs e)
        {

        }
    }
}