Answer 1

Here is an advice gleaned from the android developers forum:

There are two fairly common and well defined situations:

Situation: You need a temp file to do some processing that won't necessarily fit into memory.

Solution: Create the file, use it, delete it when you're done* Caveat: The file may be exceptionally large: demand an SDCard. The file contains sensitive information: use app storage.

Situation: You are operating a cache.

Solution: maintain the files in the supplied cache directory (Context.getCacheDir()), the system knows these can be deleted** Caveat: Big ticket items (like songs and videos) go to the sdcard (the user can treat these types as useful files anyway)

Answered by: Brooke891 | Posted: 21-02-2022

Answer 2

For future reference, now there are published guidelines: http://developer.android.com/guide/topics/data/data-storage.html

Answered by: Wilson669 | Posted: 21-02-2022

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