Check out the AtomicFile class. It was introduced in API 17. Seems like prior to the write, it copies the file to a backup file name, and then if the write fails, it copies the backup back over the original file.
There are other implementations of "safe" file writing in AOSP. See frameworks/base/com/android/internal/os/AtomicFile.java and frameworks/base/core/java/com/android/internal/util/JournaledFile.java. You won't be able to import these directly, but you can probably just copy the code because it's Apache licensed. IIRC, JournaledFile will write to a backup file until the write completes, then moves the backup over the original file. On Tue, Nov 27, 2012 at 4:41 PM, Toby <t...@tobiah.org> wrote: > I am opening a file for append using BufferedWriter. Each time the app > is run, more data is added to the file. At first a made a little class > representing the file and gave it a write() method that would take a string > and send it out, then flush() the Writer. I was wondering when I should > close the file, or whether I really needed to. Will java close the file > for me when the app goes away? Right now, since the writes are few and > far between, I'm just opening and closing the file each time I write > a line to it, but that seems really awkward. > > Thanks, > > Toby > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to > android-developers@**googlegroups.com<android-developers@googlegroups.com> > To unsubscribe from this group, send email to > android-developers+**unsubscr...@googlegroups.com<android-developers%2bunsubscr...@googlegroups.com> > For more options, visit this group at > http://groups.google.com/**group/android-developers?hl=en<http://groups.google.com/group/android-developers?hl=en> > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
