Question

Anyone know of a possible reason why fprintf maynot work for me when using the android NDK?

FILE * f = fopen("/sdcard/newfile.txt", "w+");
fprintf(f, "testing\n");

I do have the write external storage permission in the android manifest. And this code creates a file newfile.txt but it’s empty.

Is there anything else that has to be done to let me write stuff to a file?

Answer 1

I think you have to close the stream with something like “fclose”:

FILE * f = fopen("/sdcard/newfile.txt", "w+");
fprintf(f, "testing\n");
fclose(f);