In my Xamarin XAML I use this many times:
<Label Text="{x:Static local:FontAwesome.FACheck}" FontFamily="FontAwesome" XAlign="Center" FontSize="13" TextColor="#1E90FF" /> Is there a way using C# that I can create a custom version of Label and use that so I don't have to keep specifying the Font and other things?
3 Answers
Answers 1
Maybe, you can use a Style in your App.xaml.
<Application xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="YourAPp.App"> <Application.Resources> <ResourceDictionary> <Style x:Key="FACheck" TargetType="Label"> <Setter Property="Text" Value="{x:Static local:FontAwesome.FACheck}"/> <Setter Property="FontFamily" Value="FontAwesome"/> <Setter Property="XAlign" Value="Center"/> <Setter Property="FontSize" Value="13"/> <Setter Property="TextColor" Value="#1E90FF"/> </Style> <ResourceDictionary> </Application.Resources> </Application> And then in your pages, you just need to use it wherever you need to place this label.
<Label Style="{StaticResource FACheck}"/> In case you want to define your resources in C#
public class App : Application { public App () { //Begin - Style code var faCheckStyle = new Style(typeof(Label)) { Setters = { new Setter { Property = Label.TextProperty, Value = FontAwesome.FAChcek }, new Setter { Property = Label.FontFamilyProperty, Value = "FontAwesome" }, new Setter { Property = Label.XAlignProperty, Value = "FontAwesome" }, new Setter { Property = Label.FontSizeProperty, Value = 13 }, new Setter { Property = Label.TextColorProperty, Value = Color.FromHex("#1E90FF") } } }; Resources = new ResourceDictionary(); Resources.Add("FACheck", faCheckStyle); //End Style code } ... } Answers 2
Create your class and use it everywhere
public class MyAwesomeLabel : Xamarin.Forms.Label { public MyAwesomeLabel() { FontFamily = "FontAwesome"; XAlign = Xamarin.Forms.TextAlignment.Center; //deprecated BTW FontSize = 13; TextColor = Color.FromHex(0x1E90FF); //etc } } Answers 3
To create a style in C# please see this link to a xamarin developer guide for global styles.
Example of the C# code: (sets up a resource dictionary in your App class)
public class App : Application { public App () { var buttonStyle = new Style (typeof(Button)) { Setters = { ... new Setter { Property = Button.TextColorProperty, Value = Color.Teal } new Setter { Property = Button.BackgroundColor, Value = Color.White } // add more setters for the properties that you want to set here } }; // add this style into your resource dictionary. Resources = new ResourceDictionary (); Resources.Add ("buttonStyle", buttonStyle); ... } ... } You can create controls with these styles in your C# classes:
public class ApplicationStylesPageCS : ContentPage { public ApplicationStylesPageCS () { ... Content = new StackLayout { Children = { new Button { Text = "These buttons", Style = (Style)Application.Current.Resources ["buttonStyle"] }, new Button { Text = "are demonstrating", Style = (Style)Application.Current.Resources ["buttonStyle"] }, new Button { Text = "application styles", Style = (Style)Application.Current.Resources ["buttonStyle"] } } }; } } Or alternatively access it in the xaml as a static resource:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" x:Class="Styles.ApplicationStylesPage" Title="Application" Icon="xaml.png"> <ContentPage.Content> <StackLayout Padding="0,20,0,0"> <Button Text="These buttons" Style="{StaticResource buttonStyle}" /> <Button Text="are demonstrating" Style="{StaticResource buttonStyle}" /> <Button Text="application style overrides" Style="{StaticResource buttonStyle}" /> </StackLayout> </ContentPage.Content> </ContentPage> 
0 comments:
Post a Comment