P268 Saving to External Storage (SD Card)
Just a note if you're having difficulties with description in the book at the foot of P270 which tells you that the file you've just created gets stored in the emulator's /mnt/sdcard/MyFiles/ directory.
Well it may do. I tried it on an emulator running API 18 first and couldn't find the file and later discovered it had been put into the /storage/sdcard/MyFiles/ directory. I then tried it on an API 10 emulator and the file got stored where the author had said so, be aware that there may be variances depending upon which emulator you're running.