I have a list of icons that need to be dynamically bound to a Xamarin page.
The Xaml is:
<Label
Grid.Row="2"
Grid.ColumnSpan="4"
HorizontalOptions="Start"
Style="{StaticResource IconLabelStyle}"
Text="{Binding Features}"/>
where Features is a comma separated list of Fontawesome icons. Hardcoded hex values work
 
Unicode values just render as
"\uf236 \uf1eb"
How can I get the list of icons to render as a complete list?
Based on your statement
where Features is a comma separated list of Fontawesome icons. Hardcoded hex values work
I will assume the below code interpretation of Features
, you will need to:
List<string>
property, in order to bind to the UI.string Features = ", , , ";
public List<string> IconsList { get; set; }
public MainPage()
{
BindingContext = this;
IconsList = Features.Trim().Split(',').Select(x => x.Trim()).ToList();
InitializeComponent();
}
In your UI you can use bind IconsList
property using BindableLayout
, CollectionView
or ListView
:
<StackLayout BindableLayout.ItemsSource="{Binding IconsList}" Orientation="Horizontal">
<BindableLayout.ItemTemplate>
<DataTemplate>
<Label Text="{Binding .}"/>
</DataTemplate>
</BindableLayout.ItemTemplate>
</StackLayout>
Note
If you are adding/removing (not only during first appearing of the page), then you may need to change the type List<string>
to ObservableCollection<string>
.
You can also use a single Label
to implement it .
public class MyLabel : Label
{
public static readonly BindableProperty MyTextProperty =
BindableProperty.Create("MyText", typeof(string), typeof(MyLabel), null, propertyChanged: BindingPropertyChangedDelegate);
public string MyText
{
get { return (string)GetValue(MyTextProperty); }
set { SetValue(MyTextProperty, value); }
}
static void BindingPropertyChangedDelegate(BindableObject bindable, object oldValue, object newValue)
{
if (newValue == null) return;
var IconsList = ((string)newValue).Trim().Split(',').Select(x => x.Trim()).ToList();
if (IconsList == null || IconsList.Count == 0) return;
FormattedString text = new FormattedString();
foreach(var str in IconsList)
{
text.Spans.Add(new Span { Text = " " });
text.Spans.Add(new Span { Text = str, FontFamily = "FontAwesomeSolid"});
}
((Label)bindable).FormattedText = text;
}
}
xmlns:local="clr-namespace:MyForms.View"
<local:MyLabel MyText="{Binding Features}"/>
Features = "\uf164,\uf140,\uf236,\uf1eb,\uf5e1,\uf14a,\uf14b,\uf520,\uf14d,\uf14e,\uf578,\uf15c";
this.BindingContext = this;
Refer to
https://devblogs.microsoft.com/xamarin/embedded-fonts-xamarin-forms/
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