Can't display data in list view after json deserialization. How do i need to set it up in order to see it?
I'm data binding my reponse from http client using binding context so i can use it in my list view.
MainPage.xaml
<ContentPage
Title="Home"
>
<Grid>
<ListView ItemsSource="{Binding .}">
<ListView.ItemTemplate>
<DataTemplate>
<StackLayout>
<Label Text="{Binding Description}"/>
<Label Text="{Binding Value}"/>
</StackLayout>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
</ContentPage>
MainPage.cs
public MainPage()
{
DataService ds = new DataService();
BindingContext = ds.GetBillsAsync();
InitializeComponent();
Chart1.Chart = new BarChart { Entries = entries, LabelTextSize = (float)Convert.ToDouble(Device.GetNamedSize(NamedSize.Large, typeof(Label))), BackgroundColor = SKColors.Transparent };
}
DataService.cs
public class DataService
{
HttpClient client = new HttpClient();
public async Task<List<Bill>> GetBillsAsync()
{
try
{
string url = "my url";
var response = await client.GetStringAsync(url).ConfigureAwait(continueOnCapturedContext: false); ;
var bills = JsonConvert.DeserializeObject<List<Bill>>(response);
return bills;
}
catch (Exception e)
{
throw e;
}
}
}
I'm not getting any error messages, except for this output message "Binding: System.Threading.Tasks.Task`1[System.Collections.Generic.List`1[Test.Models.Bill]] can not be converted to type 'System.Collections.IEnumerable'"
which i don't think it is the problem since i can see my list being populated correctly when i'm debugging.
Can you help me please?
Thank you in advance
Nikhil's method is one way ,if you only want to set the List which request from http client to the listview,you could binding to the ListView's ItemsSource property.
in the MainPage.xaml.cs :
public partial class MainPage: ContentPage
{
DataService ds = new DataService();
public MainPage()
{
InitializeComponent();
Chart1.Chart = new BarChart { Entries = entries, LabelTextSize = (float)Convert.ToDouble(Device.GetNamedSize(NamedSize.Large, typeof(Label))), BackgroundColor = SKColors.Transparent };
}
protected override async void OnAppearing()
{
base.OnAppearing();
listview.ItemsSource = await ds.GetBillsAsync();
}
}
in MianPage.xaml:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
Title="Home"
x:Class="App18.MainPage">
<ContentPage.Content>
<StackLayout>
<ListView x:Name="listview">
<ListView.ItemTemplate>
<DataTemplate>
<StackLayout>
<Label Text="{Binding Description}"/>
<Label Text="{Binding Value}"/>
</StackLayout>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</ContentPage.Content>
</ContentPage>