I am reaching out to seek your assistance regarding a persistent issue I am experiencing with my Android application (using Android Studio). In my application, I am using a HashMap to store groups and their contents, which I then serialize to JSON for storage. However, the data is not persisting between sessions, and the structure of the JSON output appears to be incorrect. This is causing problems when I attempt to load the data back into the app.
Somebody has maybe a solution to save the last changes on the App.
Below are the relevant code snippets from my project: