[Question]I want to save some data and release some resources before closing the software.

[molihuan]

Question

I tried to find the lifecycle of building software for Fleet, but I couldn't find it. I want to save some data and release some resources before closing the software. What should I do? Please help me, thank you very much.

Code sample

No response

Error message

No response

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• I have searched for answers to my question both in the issues and in previous discussions.

[ndonkoHenri]

• https://flet.dev/docs/controls/page#window_prevent_close
• https://flet.dev/docs/controls/page/#on_app_lifecycle_state_change

[jlindoso]

Do you use userControl?

try to use will_unmount event

https://flet.dev/docs/guides/python/user-controls/