How can cached message information be cleared?

In Android, to clear cached message information, you can use methods related to data caching. For example, if you use SharedPreferences for storage, you can call edit().clear().apply() to clear all data. If the cache is stored in files, you can delete the corresponding files using the delete() method.

Example of clearing SharedPreferences:

SharedPreferences prefs = context.getSharedPreferences("message_cache", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = prefs.edit();
editor.clear();
editor.apply();

If you are using in-memory cache or a caching library (such as Glide, Picasso), they have their own cache clearing methods.

You can also clear the entire app cache via:

context.getCacheDir().delete();

but this will delete all cache, not just message information.