Xamarin-Theme-Script

A simple script to add multiple themes to your xamarin forms app.

Steps

1. Add the ThemeManager.cs to your code with your corresponding namespace .

2. Initialize the the ThemeManager Class with the keys of your choice.

    var keys = new List<string>() { "Primary", "Secondary", "Tertiary" };
    var manager = ThemeManager.Init(keys);
   

   The Keys are the strings you put in your XAML code:

    Button Margin="0,10,0,0" Text="NextTheme"
            Command="{Binding OpenWebCommand}"
            BackgroundColor="{DynamicResource Primary}"/>
   

   Warning: Keys are case sensitive

3. Add a Theme by giving it a name and passing colors.

    var manager = ThemeManager.Instance();
    manager.AddTheme("Theme1", new List<Color>() { Color.Blue, Color.Chartreuse, Color.Green });
   

   Note: Colors count must match keys count.

   Note: The first key is matched to the first color, if you'd like another mapping, create another data structure with the appropriate iterator.

4. Use the SetTheme method to change the theme.

    var manager = ThemeManager.Instance();
    manager.SetTheme("Theme1");
   

5. Results: