问题
I trying to write some files on the internal storage.
I saw theFileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE); on Data Storage and I understood that the file will be private to my application.
but the problem is it can only open a file without a path, so first I opened a new directory file with file.mkdir(), but now, how do I write the file as private ?
回答1:
I saw theFileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE); on Data Storage and I understood that the file will be private to my application.
Correct. They will be private by default.
but the problem is it can only open a file without a path, so first I opened a new directory file with file.mkdir(), but now, how do I write the file as private ?
Your files that you create in subdirectories off of in getFilesDir() are private by default -- you do not have to do anything special to make them be private.
回答2:
If you call Context.openFileOutput() the file will always be written into your application's data directory (i.e. "/data/data/appname/filename"). You cannot use sub folders here! The documentation for this function says
nameThe name of the file to open; can not contain path separators.
来源：https://stackoverflow.com/questions/6773497/write-private-file-to-internal-storage