Store does not deletes automatically when app uninstalled by the user only for some android devices not for all.

[abdullatifHH]

Updated Description:

Explaining the scenario: (where I had identified a bug using this mmkv library)

• Replaced the Async-storage with mmkv for utilizing the more size beyond what Async-storage library provides.
• Now If user tries to uninstall the App, the cache data still persists and there is no way to identify the uninstall callback to clear the mmkv storage. Still we need to relay on the Async-storage keys to indentify the fresh app install instance and clear the mmkv storage. But opened an issues to find a better way without relaying on the Async-storage library.

This issue was reproduced in only some devices of Android model, not reproducible in iOS though.

[maintenance-hans[bot]]

Guten Tag, Hans here! 🍻

Thanks for bringing this issue up. It seems you’ve encountered a potential bug with mmkv, which is indeed important to address. However, it would help us a lot if you could provide logs from the specific Android devices where this issue occurs.

To gather logs, you can use adb logcat while reproducing the issue on the device. This way, mrousavy can better understand the situation.

Also, if you’d like to ensure more timely support, consider sponsoring the project here. It really helps keep the development going!

Let us know if you can provide the logs!

Note: If you think I made a mistake, please ping @mrousavy to take a look.

[radko93]

Do you have allowBackup set to false in Android manifest?

[abdullatifHH]

Do you have allowBackup set to false in Android manifest?

yes allowBackup is false, still issue persist.

[brunofurmon]

Using version 2.latest, I've just found a similar behavior. We've also put a tools:replace="android:allowBackup" together so it would replace any lib that could interfere.

<application android:allowBackup="false" tools:replace="android:allowBackup" ... />

[mrousavy]

I think this has been fixed in react-native-mmkv 4.x.x-beta.