When you want the app to store data, for instance the players name, the score etc and have it available the next time the player goes on you have to store things in the app’s sandbox.
Somehow, this is a bit complicated.
I have divided the FILEIO files in two stages: The Filio for basics like
- clearCache (clears all files)
- getDirectory (give the names of the existing files)
- get an file
then I have a header and source file for converting this stuff into properties of my objects and the other way around, getting my properties in a format which is acceptable for fileio.
You have to realize that for instances arrays written to the cache can contain only objects like NSSTring, and NSNumber. More complex, homemade objects cannot be stored in an NSArray for writing to file.Actually you write a NSString to memory, and what you get out, also is a NSString. These NSStrings are then converted to arrays of NSNumbers (if needed).
This is an example where you can see the directory and have a few buttons for writing and reading two files to the sandbox of an app. The image in the background is from Grungegolf!
write a file
