Error when return to original code, after changes

[Marcio Ordoñez]

Hello,

The hot reload stops when I change my code for the second time and save again, using IReloadable interface. I'm invoking a HttpClient API to load data using ListView.

Example:
Change label color and save 1st time (OK)
Change label color (again) and save 2nd time (Stop reloading)

Tested with iphone 11 pro ios 13.4 simulator.

Thanks

[Andrei]

Does it work fine on a simple page? without IReloadable

[Marcio Ordoñez]

Does it work fine on a simple page? without IReloadable

Yes, it works!

[Marcio Ordoñez]

Maybe hot reload is being faster than API response

[Andrei]

Probably yes.
Can you build a small sample and attach it to this issue?

[Marcio Ordoñez]

.CS

[DesignTimeVisible(true)]
    public partial class MainPage : ContentPage, IReloadable
    {
        private bool _isRefreshing = false;
        public bool IsRefreshing
        {
            get { return _isRefreshing; }
            set
            {
                _isRefreshing = value;
                OnPropertyChanged(nameof(IsRefreshing));
            }
        }

        public ICommand RefreshCommand
        {
            get
            {
                return new Command(async () =>
                {
                    IsRefreshing = true;

                    await GetJsonDataAsync();

                    IsRefreshing = false;
                });
            }
        }

        public MainPage()
        {
            InitializeComponent();
        }

        public void OnLoaded()
        {
            BindingContext = this;

            _ = GetJsonDataAsync();
        }

        private async Task GetJsonDataAsync()
        {
            // Check network status  
            if (NetworkCheck.IsInternet())
            {
                var endpoint = "https://webapicbc.azurewebsites.net/api/getmydata";

                //Menu data
                var client = new System.Net.Http.HttpClient();
                var response = await client.GetAsync(endpoint);
                string jsonString = await response.Content.ReadAsStringAsync(); //Getting response 

                ContactList ObjContactList = new ContactList();

                try
                {
                    ObjContactList = JsonConvert.DeserializeObject<ContactList>(jsonString);
                    listviewConacts.ItemsSource = ObjContactList.contacts;
                }
                catch
                {
                    var msg = "No data to display.";
                    CreateAlertMessage(msg);
                    await DisplayAlert("CBC", msg, "OK");
                }
            }
            else
            {
                await DisplayAlert("CBC", "Connect to internet.", "OK");
            }

            //Hide loader after server response    
            ProgressLoader.IsVisible = false;
        }

[Marcio Ordoñez]

XAML

<Grid>
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="Auto"/>
                <RowDefinition Height="*"/>
            </Grid.RowDefinitions>
            <Image Source="h61cbc.jpg" Aspect="AspectFill" />

            <ListView IsPullToRefreshEnabled="True"
                      RefreshCommand="{Binding RefreshCommand}"
                      IsRefreshing="{Binding IsRefreshing}"
                      x:Name="listviewConacts"
                      Grid.Row="1"
                      HorizontalOptions="FillAndExpand"
                      Footer=""
                      HasUnevenRows="True"
                      ItemSelected="listviewContacts_ItemSelected">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <StackLayout BackgroundColor="#eee" Orientation="Vertical" Padding="10">
                                <StackLayout Orientation="Horizontal">

                                    <Label Text="{Binding Icon}" FontFamily="{Binding FontType, Converter={StaticResource fontConvert}}" FontSize="28" WidthRequest="35" />

                                    <Label Text="{Binding Name}"
                                           VerticalTextAlignment="Center"
                                           HorizontalOptions="FillAndExpand"
                                           FontFamily="{StaticResource AmerikaSans}"
                                           TextColor="#f35e20" />
                                    <Label Text="{x:Static fontawesome:FontAwesomeIcons.CaretRight}" FontFamily="{StaticResource FontAwesomeSolid}" VerticalOptions="Center" VerticalTextAlignment="Center" FontSize="16" />
                                </StackLayout>
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>
        </Grid>
        <ActivityIndicator x:Name="ProgressLoader" IsRunning="True"/>
    </Grid>

[Andrei]

Sorry, I cannot reproduce this issue. It works fine for me.
Build a sample project and attach it.

[Marcio Ordoñez]

Hello, thanks for help.

Follow my poc project.

Sometimes it looks like the change is shown by Hot Reload, but something makes the contents of the listview disappear.

XFMobileCBCBeta.zip