Скачать или смотреть Resolving Proguard Issues with JavaFX Custom Controls

Discover how to effectively configure Proguard for your JavaFX application to handle custom controls and avoid property-related errors.
---
This video is based on the question https://stackoverflow.com/q/69985061/ asked by the user 'Jawad El Fou' ( https://stackoverflow.com/u/9078219/ ) and on the answer https://stackoverflow.com/a/70010930/ provided by the user 'Jawad El Fou' ( https://stackoverflow.com/u/9078219/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Proguard with custom control and custom StringProperty

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Resolving Proguard Issues with JavaFX Custom Controls: A Step-by-Step Guide

If you're developing a JavaFX application and are using custom controls, you may encounter some challenges when using Proguard for obfuscation and optimization. A common issue arises when Proguard misinterprets or omits certain properties, leading to runtime errors such as Property "text" does not exist or is read-only. In this guide, we'll walk you through the problem and provide a detailed solution to ensure that your custom controls function properly after using Proguard.

Understanding the Problem

Your custom JavaFX control likely includes a StringProperty for managing text. Here's a simplified version of such a control class:

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

When you use this custom control in an FXML file:

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

Proguard can sometimes strip necessary properties from your control, causing an exception when loading the FXML file:

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

The Root of the Issue

The root of the problem lies in the Proguard configuration. When Proguard processes your classes, it may not recognize certain properties if they are not explicitly kept in the configuration. The original Proguard setting you used may look something like this:

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

This configuration was insufficient to retain the properties fully, thereby leading to the error.

The Solution

To resolve the issue, you need to adjust the Proguard configuration to ensure that it correctly keeps all properties and methods related to your custom controls. Here’s the modified configuration:

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

Explanation of the New Configuration

*javafx.beans.property. *;**: This line ensures that all properties belonging to the javafx.beans.property package are retained.

**void set*(***);**: This keeps all setter methods.

**boolean is*();**: This retains any methods that check properties (e.g., boolean properties).

*** get*();: This ensures all getter methods are retained.

By expanding the wildcard to include all potential property methods, you can avoid omissions that lead to runtime exceptions in your JavaFX application.

Conclusion

Incorporating Proguard into your JavaFX build process can enhance the security and performance of your application. However, it is crucial to ensure that all necessary properties and methods are retained in your custom controls. By updating your Proguard configuration as illustrated above, you will eliminate the common pitfalls that arise during the FXML loading process.

Now that you have a better understanding of how to configure Proguard for JavaFX applications with custom controls, you're ready to move forward with confidence, eliminating errors and ensuring smooth application functionality. Happy coding!