Скачать или смотреть How to Change FontAwesome Text and Font Family in C# Xamarin.Forms

Learn how to effectively modify FontAwesome text and font family in your C# Xamarin.Forms application. Follow our simple guide to ensure successful implementation.
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This video is based on the question https://stackoverflow.com/q/62212343/ asked by the user 'G.Mich' ( https://stackoverflow.com/u/5350526/ ) and on the answer https://stackoverflow.com/a/62212929/ provided by the user 'Dennis Schröer' ( https://stackoverflow.com/u/4825351/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Changing FontAwesome Text and Font Family in C# Xamarin.Forms

Have you ever faced the challenge of changing the FontAwesome text and font family dynamically in your Xamarin.Forms application? If you’ve added FontAwesome fonts to your Android and iOS solutions and used XAML without any hassle, you might find that modifying this dynamically isn’t as straightforward as it seems. In this guide, we’ll delve into the solution to this problem step by step, ensuring you can easily implement the changes you wish for in your application.

The Problem Breakdown

In your Xamarin.Forms app, you might have defined your FontAwesome fonts in the App.xaml for both Android and iOS platforms.
Here's a part of your setup:

[[See Video to Reveal this Text or Code Snippet]]

You initially attempted to change the font family and text value of a label in the following way:

[[See Video to Reveal this Text or Code Snippet]]

However, instead of receiving the expected string, you got an unexpected output:

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Understanding the Solution

The issue arises from the way OnPlatform works in Xamarin.Forms. When you try to fetch the resource, it does not correctly cast the value to a string, hence the unexpected output. To resolve this issue, you will need to explicitly cast the OnPlatform<string> resource to a string type.

Step-by-Step Solution

Modify the FontFamily Assignment
Instead of directly assigning the font family value, use the correct cast. Modify your code as follows:

[[See Video to Reveal this Text or Code Snippet]]

Change the Text Value
The text value assignment is fine as is, so when the tap gesture is recognized, it will update the text correctly.

Final Code Implementation

Here's the full implementation for changing the FontAwesome font family and text value on tap:

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Now, when you tap on the label, it should correctly update the font family and text as expected.

Conclusion

Changing FontAwesome text and font family in your Xamarin.Forms application is quite manageable once you understand how to correctly cast the OnPlatform resources. By meticulously following the steps outlined above, you should be able to implement dynamic changes in your UI without any issues. Happy coding!