Raw 'UnsupportedOperationException' toast displayed when attempting to create file in JAR archive

[XYIheng]

Describe the bug
When attempting to create a file inside a JAR archive, the app displays a raw Java exception (java.lang.UnsupportedOperationException: Write) in a Toast message. This exposes internal implementation details and provides a poor user experience.

To Reproduce
Steps to reproduce the behavior:

1. Open a jar file
2. Click the Add (FAB) button to create a new file or folder.
3. see the error: a toast shows "java.lang.UnsupprotedOperationException:Write"

Expected behavior
The app should handle this operation gracefully.

• A user-friendly error message should be displayed (e.g., "Cannot write to read-only archive" or "Operation not supported").
• Or the "Add" button should be hidden or disabled if writing to JAR files is not supported.

Video

20251224_195729.mp4

Smartphone (please complete the following information):

• OS: [Android 11]
• Version: [1.7.4]