Native Development

[lyon819]

Intend to find a way to save acceleration into a file, but I don't know how to do it.

Does anyone know the answer or useful website or reference.

Thank you,

[Innovatology]

This is not PlayBook NDK specific. Just use the standard C/C++ file I/O functions, e.g.:

http://www.cprogramming.com/tutorial/cfileio.html

[scraft]

The main thing I have to discover to get file IO working on PlayBook (on top of knowing how to use C file functions is):

If you wish to read a file from inside your BAR package, you should prepend the following to the path:

./app/native/

If you wish to read or write a file to the data storage for your application, you should prepend the following to the path:

./data/

So, for example:

// Load from BAR.

LoadTexture( "./app/native/mytexture.tex" );

// Save into data directory (where we have READ/WRITE access).

SaveGame( "./data/savegame.xml" );

I have this abstracted away into my PlayBook file system (which I imagine is quite a common thing to do).

I hope that is of some help.

Best regards,

Steve

[lyon819]

I still suffer how to write a data into Playbook storage spac.

char *outname = "file:///SDCard/documents/file.txt"; 

What is correct file path??

Just want to save a file into documents folder in Playbook.

[scraft]

It seems like my suggestion was not clear enough:

char *outname = "./data/file.txt";

I believe that should be correct.

Steve

[lyon819]

Try to use the path.

char *outname = "./data/file.txt";

No error, but cannot file the file.txt on playbook.

Does anyone know how to reach the data file path??

[lyon819 · Accepted solution]

This is the final solution.

char *outname = "./shared/documents/file.txt";

Check filesystem layout.

http://supportforums.blackberry.com/t5/Adobe-AIR-Development/BlackBerry-PlayBook-File-System-Layout/...

Thanks the reference page.

Go go drill the playbook NDK.